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serial4u.com

serial4u.com is SSL secured

Free website and domain report on serial4u.com

Last Updated: 29th November, 2022 Update Now
Overview

Snoop Summary for serial4u.com

This is a free and comprehensive report about serial4u.com. The domain serial4u.com is currently hosted on a server located in Columbus, Ohio in United States with the IP address 3.19.116.195, where USD is the local currency and the local language is English. Our records indicate that serial4u.com is owned/operated by HugeDomains.com. If serial4u.com was to be sold it would possibly be worth $181 USD (based on the daily revenue potential of the website over a 24 month period). Serial4u.com is slightly popular with an estimated 82 daily unique visitors. This report was last updated 29th November, 2022.

About serial4u.com

Site Preview: serial4u.com serial4u.com
Title: Serial4u.com is for sale | HugeDomains
Description: Great domain names provide SEO, branding, and a memorable experience for your users. Get a premium domain today.
Keywords and Tags: entertainment
Related Terms: serial4u, serial4u net
Fav Icon:
Age: Over 6 years old
Domain Created: 6th July, 2017
Domain Updated: 7th July, 2021
Domain Expires: 6th July, 2024
Review

Snoop Score

1/5

Valuation

$181 USD
Note: All valuation figures are estimates.

Popularity

Low
Note: Popularity is estimated.

Rank, Reach and Authority

Alexa Rank: 8,537,693
Alexa Reach:
SEMrush Rank (US):
SEMrush Authority Score:
Moz Domain Authority: 0
Moz Page Authority: 0

Organic vs Paid (Google Ads)

Traffic

Visitors

Daily Visitors: 82
Monthly Visitors: 2,496
Yearly Visitors: 29,930
Note: All visitors figures are estimates.

Visitors By Country

Revenue

Revenue

Daily Revenue: $0 USD
Monthly Revenue: $7 USD
Yearly Revenue: $85 USD
Note: All revenue figures are estimates.

Revenue By Country

SEO

Backlinks Analysis (SEMrush)

Top New Follow Links

Top Ranking Keywords (US)

Domain Analysis

Value Length
Domain: serial4u.com 12
Domain Name: serial4u 8
Extension (TLD): com 3
Expiry Check:

Page Speed Analysis

Average Load Time:
Load Time Comparison:

PageSpeed Insights

Avg. (All Categories) 71
Performance 88
Accessibility 95
Best Practices 58
SEO 92
PWA 22
0–49 (Fail) 50–89 (Average) 90–100 (Pass)
URL: https://www.hugedomains.com/domain_profile.cfm
Updated: 29th November, 2022

2.37 seconds
First Contentful Paint (FCP)
60%
24%
16%

0.00 seconds
First Input Delay (FID)
96%
2%
2%

Simulate loading on desktop
88

Performance

Indicates how well the page is performing and highlights opportunities where performance may be improved for serial4u.com. This includes details about optimizing page load times which can result in a better user experience.

Metrics

First Contentful Paint — 0.9 s
The time taken for the first image or text on the page to be rendered.
Time to Interactive — 2.4 s
The time taken for the page to become fully interactive.
Speed Index — 1.1 s
The time taken for the page contents to be visibly populated.
Largest Contentful Paint — 1.0 s
The timing of the largest text or image that is painted.
Cumulative Layout Shift — 0.005
Cumulative Layout Shift is the measurement of visible elements collective movement within the viewport.
View Data

Audits

Max Potential First Input Delay — 130 ms
Users could experience a delay when interacting with the page.
Network Requests
Below is a list of network requests that were made during page load.
URL Protocol Start Time (Ms) End Time (Ms) Transfer Size (Bytes) Resource Size (Bytes) Status Code MIME Type Resource Type
http://serial4u.com/
http/1.1
0
94.446000060998
205
0
302
text/plain
https://www.hugedomains.com/domain_profile.cfm?d=serial4u.com
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94.784999964759
236.34100006893
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43028
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text/html
Document
https://cdn.jsdelivr.net/gh/fancyapps/fancybox@3.5.7/dist/jquery.fancybox.min.css
h2
242.89200000931
260.26600005571
4282
12795
200
text/css
Stylesheet
https://static.hugedomains.com/css/hdv3-css/reboot.min.css
h2
243.05699998513
314.72500006203
2182
3976
200
text/css
Stylesheet
https://static.hugedomains.com/css/hdv3-css/style.css?aa=2021-06-09a
h2
243.23500005994
324.65700001922
27940
162500
200
text/css
Stylesheet
https://static.hugedomains.com/css/hdv3-css/responsive.css?aa=2021-06-09a
h2
243.43000003137
316.99800002389
13377
65093
200
text/css
Stylesheet
https://static.hugedomains.com/css/hdv3-css/hd-style.css
h2
243.64600004628
313.17400000989
6671
27999
200
text/css
Stylesheet
https://fonts.googleapis.com/css?family=Noto+Sans:400,700&display=swap
h2
244.00100007188
260.66000002902
1496
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text/css
Stylesheet
https://use.typekit.net/zyw6mds.css
h2
244.21500007156
316.63600006141
993
1231
200
text/css
Stylesheet
https://www.googletagmanager.com/gtag/js?id=UA-7117339-4
h2
386.48500002455
409.71300005913
44469
111645
200
application/javascript
Script
https://static.hugedomains.com/images/hdv3-img/hugedomains_logo.svg
h2
386.77500002086
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2965
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image/svg+xml
Image
https://static.hugedomains.com/images/hdv3-img/phone-icon.png
h2
386.91900006961
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1513
743
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image/png
Image
https://static.hugedomains.com/images/hdv3-img/search-icon.png
h2
387.18199997675
421.00700002629
1468
700
200
image/png
Image
https://static.hugedomains.com/images/hdv3-img/favorite-header.png
h2
387.28000002448
466.78100002464
1644
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200
image/png
Image
https://static.hugedomains.com/images/hdv3-img/cart.png
h2
387.67099997494
419.23700005282
1706
940
200
image/png
Image
https://static.hugedomains.com/images/hdv3-img/30daysmallico.png
h2
387.77000003029
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2540
1769
200
image/png
Image
https://static.hugedomains.com/images/hdv3-img/roket-side-ico.png
h2
387.97599996906
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1764
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Image
https://static.hugedomains.com/images/hdv3-img/safesmallico.png
h2
388.13800003845
465.88000003248
1963
1192
200
image/png
Image
https://static.hugedomains.com/images/hdv3-img/zero-side-ico.png
h2
388.28000007197
467.20700000878
2767
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200
image/png
Image
https://static.hugedomains.com/images/hdv3-img/mail-icon.png
h2
388.48600001074
422.66200005542
1586
817
200
image/png
Image
https://static.hugedomains.com/images/hdv3-img/footer-logo-1.png
h2
388.77600000706
421.36999999639
1507
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200
image/png
Image
https://static.hugedomains.com/images/hdv3-img/footer-logo-2.png
h2
388.94900004379
423.73999999836
2445
1673
200
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Image
https://static.hugedomains.com/images/hdv3-img/footer-logo-3.png
h2
389.12900001742
458.02899997216
2738
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200
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Image
https://static.hugedomains.com/images/hdv3-img/footer-logo-4.png
h2
389.35299997684
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1216
200
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Image
https://static.hugedomains.com/images/hdv3-img/footer-logo-5.png
h2
389.53899999615
426.19999998715
2240
1469
200
image/png
Image
https://static.hugedomains.com/js/hdv3-js/jquery.min.js
h2
326.03900006507
363.97199996281
31963
86659
200
application/javascript
Script
https://static.hugedomains.com/js/hdv3-js/intlTelInput.js
h2
371.2420000229
404.2850000551
13746
42142
200
application/javascript
Script
https://static.hugedomains.com/js/hdv3-js/script.js
h2
384.89600003231
414.5370000042
3321
9938
200
application/javascript
Script
https://static.hugedomains.com/js/hdv3-js/common.js
h2
385.98600006662
457.52499997616
3477
8681
200
application/javascript
Script
https://static.hugedomains.com/js/hdv3-js/hd-js.js?a=20220124a
h2
386.31400000304
468.60999998171
4073
23521
200
application/javascript
Script
https://p.typekit.net/p.css?s=1&k=zyw6mds&ht=tk&f=40411&a=11744788&app=typekit&e=css
h2
317.83299997915
383.72200005688
336
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200
text/css
Stylesheet
https://fonts.gstatic.com/s/notosans/v27/o-0IIpQlx3QUlC5A4PNr5TRASf6M7Q.woff2
h2
395.99700004328
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Font
https://use.typekit.net/af/a91117/00000000000000003b9b257c/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n5&v=3
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414.39399996307
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Font
https://fonts.gstatic.com/s/notosans/v27/o-0NIpQlx3QUlC5A4PNjXhFVZNyBx2pqPA.woff2
h2
414.88900000695
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Font
https://static.hugedomains.com/images/hdv3-img/test-content-img-left.png
h2
438.45300003886
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Image
https://static.hugedomains.com/images/hdv3-img/test-content-img-right.png
h2
438.5529999854
468.95999996923
1066
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200
image/png
Image
https://www.youtube.com/embed/bqLUp7GuUTg?rel=0&autoplay=0&showinfo=0&controls=0
h2
457.2010000702
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text/html
Document
https://static.hugedomains.com/images/hdv3-img/qs-item-bg.png
h2
478.14300004393
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200
image/png
Image
https://www.hugedomains.com/rjs/gen-hdc.cfm?s=https://www.hugedomains.com/domain_profile.cfm?d=serial4u.com&r=
h2
506.611000048
663.95299998112
1170
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200
text/html
XHR
https://www.hugedomains.com/rjs/favorite-domain.cfm
h2
523.31800002139
3272.803000058
1732
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500
text/html
XHR
https://www.hugedomains.com/rjs/hdv3-rjs/hurry-cart.cfm
h2
524.56499997061
669.58700004034
713
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200
text/html
XHR
https://www.hugedomains.com/rjs/favorite-domain.cfm
h2
525.30900004786
3633.2760000369
1728
1185
500
text/html
XHR
https://www.hugedomains.com/cdn-cgi/challenge-platform/h/b/scripts/alpha/invisible.js?ts=1669694400
h2
537.59399999399
607.35800000839
16397
40168
200
application/javascript
Script
https://www.google-analytics.com/analytics.js
h2
546.04599997401
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200
text/javascript
Script
https://www.youtube.com/s/player/4eb6b35d/www-player.css
h2
559.43200003821
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Stylesheet
https://www.youtube.com/s/player/4eb6b35d/www-embed-player.vflset/www-embed-player.js
h2
559.60300005972
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Script
https://www.youtube.com/s/player/4eb6b35d/player_ias.vflset/en_US/base.js
h2
559.79299999308
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Script
https://www.youtube.com/s/player/4eb6b35d/fetch-polyfill.vflset/fetch-polyfill.js
h2
560.79000001773
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Script
https://fonts.gstatic.com/s/roboto/v18/KFOmCnqEu92Fr1Mu4mxKKTU1Kg.woff2
h2
569.36099997256
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Font
https://fonts.gstatic.com/s/roboto/v18/KFOlCnqEu92Fr1MmEU9fBBc4AMP6lQ.woff2
h2
569.97399998363
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Font
https://www.google-analytics.com/plugins/ua/ec.js
h2
577.52799999435
583.68400007021
1948
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200
text/javascript
Script
https://www.google-analytics.com/j/collect?v=1&_v=j98&a=1180357162&t=pageview&_s=1&dl=https%3A%2F%2Fwww.hugedomains.com%2Fdomain_profile.cfm%3Fd%3Dserial4u.com&ul=en-us&de=UTF-8&dt=Serial4u.com%20is%20for%20sale%20%7C%20HugeDomains&sd=24-bit&sr=800x600&vp=1350x940&je=0&_u=4GBAAUALAAAAACAAI~&jid=2020299269&gjid=1223050989&cid=1790904729.1669697010&tid=UA-7117339-4&_gid=972719994.1669697010&_r=1&gtm=2oub90&z=76335739
h2
592.95199997723
604.7569999937
618
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200
text/plain
XHR
https://www.google-analytics.com/collect?v=1&_v=j98&a=1180357162&t=event&_s=2&dl=https%3A%2F%2Fwww.hugedomains.com%2Fdomain_profile.cfm%3Fd%3Dserial4u.com&ul=en-us&de=UTF-8&dt=Serial4u.com%20is%20for%20sale%20%7C%20HugeDomains&sd=24-bit&sr=800x600&vp=1350x940&je=0&ec=general&ea=pageLoad&_u=4GBAAUALAAAAACAAI~&jid=&gjid=&cid=1790904729.1669697010&tid=UA-7117339-4&_gid=972719994.1669697010&gtm=2oub90&cd3=HDv3&z=129881814
h2
596.17599996272
603.76199998427
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200
image/gif
Image
https://stats.g.doubleclick.net/j/collect?t=dc&aip=1&_r=3&v=1&_v=j98&tid=UA-7117339-4&cid=1790904729.1669697010&jid=2020299269&gjid=1223050989&_gid=972719994.1669697010&_u=4GBAAUAKAAAAACAAI~&z=750739000
h2
621.36099999771
632.68000003882
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XHR
https://www.google-analytics.com/collect?v=1&_v=j98&a=1180357162&t=event&ni=1&_s=3&dl=https%3A%2F%2Fwww.hugedomains.com%2Fdomain_profile.cfm%3Fd%3Dserial4u.com&ul=en-us&de=UTF-8&dt=Serial4u.com%20is%20for%20sale%20%7C%20HugeDomains&sd=24-bit&sr=800x600&vp=1350x940&je=0&ec=engagement&ea=view_item&_u=6GBAAUALAAAAACAMI~&jid=&gjid=&cid=1790904729.1669697010&tid=UA-7117339-4&_gid=972719994.1669697010&gtm=2oub90&pal=Product%20Page&pa=detail&pr1nm=Serial4u.com&pr1qt=1&pr1pr=1595&z=719308211
h2
627.8830000665
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Image
https://www.google.com/ads/ga-audiences?t=sr&aip=1&_r=4&slf_rd=1&v=1&_v=j98&tid=UA-7117339-4&cid=1790904729.1669697010&jid=2020299269&_u=4GBAAUAKAAAAACAAI~&z=281597673
h2
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https://www.hugedomains.com/cdn-cgi/challenge-platform/h/b/scripts/pica.js
h2
659.11600005347
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Other
https://googleads.g.doubleclick.net/pagead/id
http/1.1
863.1479999749
1004.7290000366
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https://static.doubleclick.net/instream/ad_status.js
h2
872.17900005635
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Script
https://jnn-pa.googleapis.com/$rpc/google.internal.waa.v1.Waa/Create
h2
912.07500000019
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Preflight
https://jnn-pa.googleapis.com/$rpc/google.internal.waa.v1.Waa/Create
h2
919.77300005965
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XHR
https://www.youtube.com/api/stats/qoe?cpn=9PruoPb31ewyMATP&el=embedded&ns=yt&fexp=23983296%2C24001373%2C24002022%2C24002025%2C24004644%2C24007246%2C24080738%2C24135310%2C24169501%2C24219381%2C24255163%2C24292955%2C24293803%2C24406605%2C24407200%2C24408610%2C24408753%2C24411032%2C24414162%2C24423039%2C24425861&cl=489849437&seq=1&event=streamingstats&docid=bqLUp7GuUTg&cbrand=apple&cbr=Chrome&cbrver=94.0.4590.2&c=WEB_EMBEDDED_PLAYER&cver=1.20221120.00.00&cplayer=UNIPLAYER&cos=Macintosh&cosver=10_15_7&cplatform=DESKTOP&vps=0.000:N,0.000:ER&cmt=0.000:0.000,0.000:0.000&error=0.000:html5.missingapi::0.000:nocodecs.1;a6s.0&vis=0.000:0&bh=0.000:0.000
h2
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XHR
https://www.google.com/js/th/YkfklCtf3s5-_1quWHAnTHHVaBZ-i7ToAeXFpu3i2Ro.js
h2
973.99900003802
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Script
https://www.youtube.com/s/player/4eb6b35d/player_ias.vflset/en_US/embed.js
h2
999.77600004058
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Script
https://googleads.g.doubleclick.net/pagead/id?slf_rd=1
h2
1005.1230000099
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993
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application/json
XHR
https://jnn-pa.googleapis.com/$rpc/google.internal.waa.v1.Waa/GenerateIT
h2
1200.697000022
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Preflight
https://jnn-pa.googleapis.com/$rpc/google.internal.waa.v1.Waa/GenerateIT
h2
1211.5459999768
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XHR
https://www.hugedomains.com/cdn-cgi/challenge-platform/h/b/cv/result/7718aec669296db9
h2
1457.435999997
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XHR
https://www.youtube.com/generate_204?OlVccQ
h2
1664.2650000285
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Image
https://www.youtube.com/youtubei/v1/log_event?alt=json&key=AIzaSyAO_FJ2SlqU8Q4STEHLGCilw_Y9_11qcW8
h2
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XHR
Network Round Trip Times — 0 ms
High Network RTT (Round Trip Times) can have a large impact on performance. Providing servers geographically closer to the user could improve performance.
Server Backend Latencies — 0 ms
High server latencies indicate the server is overloaded or has a poor backend performance.
Tasks
Below is a list of the top-level main thread tasks that executed during page load.
Start Time (Ms) End Time (Ms)
240.222
12.934
326.284
5.698
390.411
18.534
412.903
10.322
437.559
12.286
449.939
24.497
475.453
12.613
497.44
7.002
507.675
9.901
517.894
20.471
538.433
10.724
552.006
8.97
573.925
23.183
601.569
11.77
613.896
5.703
628.737
16.279
737.152
5.355
742.517
115.702
858.465
22.132
885.099
118.045
1010.057
193.196
1207.949
250.623
1467.651
6.11
1477.033
9.918
1486.959
5.04
1492.024
175.257
4343.05
8.654
Diagnostics
Below is a collection of useful page vitals.
View Data
Metrics
Below is a collection of metrics.
View Data
Script Treemap Data
Provide as required, for treemap app.

Other

Properly size images
Images can slow down the page's load time. Serial4u.com should consider serving more appropriate-sized images.
Defer offscreen images
Time to Interactive can be slowed down by resources on the page. Serial4u.com should consider lazy-loading offscreen and hidden images.
Minify CSS
Cascading Style Sheets (CSS) files can contribute to network payload sizes. Serial4u.com should consider minifying CSS files.
Minify JavaScript
JavaScript (JS) files can contribute to network payload sizes and increase script parse times. Serial4u.com should consider minifying JS files.
Reduce unused CSS — Potential savings of 86 KiB
Dead and/or unused rules in Style Sheets (CSS) can contribute to network payload sizes. Serial4u.com should consider removing dead rules from style sheets and deferring the loading of CSS not used for above-the-fold content.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://www.youtube.com/s/player/4eb6b35d/www-player.css
50582
48881
https://static.hugedomains.com/css/hdv3-css/style.css?aa=2021-06-09a
27940
25628
https://static.hugedomains.com/css/hdv3-css/responsive.css?aa=2021-06-09a
13377
13377
Efficiently encode images
Unoptimized images can consume more cellular data than what is necessary.
Serve images in next-gen formats
Consider JPEG 2000, JPEG XR or WebP image formats which provide better compression than PNG and JPEG.
Enable text compression
Text-based resources should be served with compression, such as gzip, deflate or brotli.
Preconnect to required origins
Resource hints, such as 'preconnect' or 'dns-prefetch', may assist in establishing early connections to important third-party origins.
Initial server response time was short — Root document took 140 ms
It is advised to keep the server response time short for the main document, because all other requests depend on it.
URL Time Spent (Ms)
https://www.hugedomains.com/domain_profile.cfm?d=serial4u.com
142.549
Avoid multiple page redirects — Potential savings of 190 ms
Redirects can cause additional delays before the page can begin loading. Serial4u.com should avoid multiple or unnecessary page redirects.
URL Time Spent (Ms)
http://serial4u.com/
190
https://www.hugedomains.com/domain_profile.cfm?d=serial4u.com
0
Preload key requests
Key requests can be preloaded by using '<link rel=preload>'. Serial4u.com should consider using '<link rel=preload>' to prioritize fetching resources that are currently requested later in page load.
Use video formats for animated content
Large GIFs are inefficient for delivering animated content. It is recommended to use MPEG4/WebM videos for animations and PNG/WebP for static images instead of GIF.
Remove duplicate modules in JavaScript bundles
Ensure that no duplicate JavaScript modules from bundles exist to reduce bytes consumed by network activity.
Avoid serving legacy JavaScript to modern browsers — Potential savings of 0 KiB
Polyfills and transforms enable legacy browsers to use new JavaScript features. For bundled JavaScript it is recommended to adopt a modern script deployment strategy using module/nomodule feature detection. This will reduce the amount of code shipped to modern browsers.
URL Potential Savings (Bytes)
https://static.hugedomains.com/js/hdv3-js/intlTelInput.js
55
Preload Largest Contentful Paint image
It is recommended to preload images used by LCP elements, to improve LCP time.
Avoids enormous network payloads — Total size was 1,141 KiB
Large network payloads can cost users money and are linked to long load times.
URL Transfer Size (Bytes)
https://www.youtube.com/s/player/4eb6b35d/player_ias.vflset/en_US/base.js
593291
https://www.youtube.com/s/player/4eb6b35d/www-embed-player.vflset/www-embed-player.js
99836
https://www.youtube.com/s/player/4eb6b35d/www-player.css
50582
https://www.googletagmanager.com/gtag/js?id=UA-7117339-4
44469
https://static.hugedomains.com/js/hdv3-js/jquery.min.js
31963
https://jnn-pa.googleapis.com/$rpc/google.internal.waa.v1.Waa/Create
31455
https://www.youtube.com/embed/bqLUp7GuUTg?rel=0&autoplay=0&showinfo=0&controls=0
28110
https://static.hugedomains.com/css/hdv3-css/style.css?aa=2021-06-09a
27940
https://www.google-analytics.com/analytics.js
20664
https://use.typekit.net/af/a91117/00000000000000003b9b257c/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n5&v=3
19926
Avoids an excessive DOM size — 487 elements
A large DOM (Document Object Model) will increase memory usage, cause longer system calculations as well as costly layout reflows.
Statistic Element Value
Total DOM Elements
487
Maximum DOM Depth
div.tablet-block-left > button#hdv3Billboard197BuyTabProceID > div#circularG > div#circularG_1
13
Maximum Child Elements
Serial4u.com This domain is for sale: $1,595 Favorite Hurry, 7 people have it…
14
Avoid chaining critical requests — 15 chains found
Below is a list of Critical Request Chains, which shows which resources are loaded with a high priority. Serial4u.com should consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.
User Timing marks and measures — 8 user timings
Make use of the User Timing API to measure an app's real-world performance during key user experiences.
Name Type Start Time (Ms) Duration (Ms)
mark_pe
Mark
830.838
mark_pot_isc
Mark
906.864
mark_pot_ist
Mark
909.511
mark_fs
Mark
926.932
mark_qoes
Mark
934.508
mark_pot_if
Mark
1463.294
mark_pot_cms
Mark
1463.928
mark_pot_cmf
Mark
1465.566
JavaScript execution time — 0.9 s
JavaScript (JS) execution time can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
URL Total CPU Time (Ms) Script Evaluation (Ms) Script Parse (Ms)
https://www.youtube.com/s/player/4eb6b35d/www-embed-player.vflset/www-embed-player.js
357.693
316.17
7.441
https://www.youtube.com/s/player/4eb6b35d/player_ias.vflset/en_US/base.js
305.666
247.463
42.571
https://www.hugedomains.com/cdn-cgi/challenge-platform/h/b/scripts/alpha/invisible.js?ts=1669694400
258.111
246.429
2.05
https://www.hugedomains.com/domain_profile.cfm?d=serial4u.com
117.887
17.81
4.037
Unattributable
70.629
1.865
0
Minimizes main-thread work — 1.3 s
Main-thread work timing can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
Category Time Spent (Ms)
Script Evaluation
936.58
Other
110.807
Script Parsing & Compilation
68.993
Style & Layout
67.95
Parse HTML & CSS
39.694
Garbage Collection
39.249
Rendering
18.652
Keep request counts low and transfer sizes small — 70 requests • 1,141 KiB
It is advised to add a budgets.json file in order to set budgets for the quantity and size of page resources.
Resource Type Requests Transfer Size (Bytes)
Total
70
1168631
Script
15
861944
Stylesheet
9
107859
Font
5
70710
Other
17
53307
Document
2
37944
Image
22
36867
Media
0
0
Third-party
35
985702
Largest Contentful Paint element — 1 element found
The element which was identified as the Largest Contentful Paint.
Element
The purchase of the domain was easy and straight forward. Then, after a year an…
Largest Contentful Paint image was not lazily loaded
Above-the-fold images that are lazily loaded render later in the page lifecycle, which can delay the largest contentful paint.
Avoid large layout shifts — 5 elements found
Below is a list of all DOM elements that contribute to the CLS of the page.
Element CLS Contribution
The purchase of the domain was easy and straight forward. Then, after a year an…
0.0011519539184559
I was very happy with the responsiveness and professionalism of the HugeDomains…
0.0011009825061348
Search
0.00050227431190254
Safe and secure shopping
0.00044048539640792
$1,595
0.00041413478095905
Avoids `document.write()`
Avoid or limit the use of external scripts that are dynamically injected via 'document.write()' as users on slow connections will be delayed by tens of seconds.
Avoid long main-thread tasks — 5 long tasks found
Below is a list of the longest tasks on the main thread, which is useful when identifying the worst input delay contributors.
URL Start Time (Ms) Duration (Ms)
https://www.hugedomains.com/cdn-cgi/challenge-platform/h/b/scripts/alpha/invisible.js?ts=1669694400
1386
125
https://www.youtube.com/s/player/4eb6b35d/player_ias.vflset/en_US/base.js
1970
116
https://www.youtube.com/s/player/4eb6b35d/player_ias.vflset/en_US/base.js
2335
97
https://www.youtube.com/s/player/4eb6b35d/player_ias.vflset/en_US/base.js
2247
88
https://www.youtube.com/s/player/4eb6b35d/www-embed-player.vflset/www-embed-player.js
2108
59
Avoid non-composited animations
It is recommended to avoid non-composited animations which are often janky and increase CLS.
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of serial4u.com on mobile screens.
Avoids `unload` event listeners
The 'unload' event does not fire reliably, causing issues with browser optimizations such as the Back-Forward Cache. It is recommended that 'pagehide' or 'visibilitychange' events are used instead.

Budgets

Performance budget
It is advised to keep the quantity and size of all network requests under the targets set by the provided performance budget.
Timing budget
It is advised to set a timing budget to monitor the performance of your site.

Metrics

Total Blocking Time — 240 ms
The total blocking time is the sum of all time periods between First Contentful Paint and Time to Interactive (when task length exceeded 50ms).

Audits

First Meaningful Paint — 0.9 s
The time taken for the primary content of the page to be rendered.

Other

Eliminate render-blocking resources — Potential savings of 490 ms
Resources, such as JavaScript and style sheets, can block the first paint of the page. Serial4u.com should consider delivering critical JavaScript/style sheets (JS/CSS) inline and deferring all non-critical JS/CSS.
URL Transfer Size (Bytes) Potential Savings (Ms)
https://cdn.jsdelivr.net/gh/fancyapps/fancybox@3.5.7/dist/jquery.fancybox.min.css
4282
230
https://static.hugedomains.com/css/hdv3-css/reboot.min.css
2182
230
https://static.hugedomains.com/css/hdv3-css/style.css?aa=2021-06-09a
27940
80
https://fonts.googleapis.com/css?family=Noto+Sans:400,700&display=swap
1496
230
https://use.typekit.net/zyw6mds.css
993
230
Reduce unused JavaScript — Potential savings of 461 KiB
It is advised to remove unused JavaScript in order to reduce bytes consumed by network activity.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://www.youtube.com/s/player/4eb6b35d/player_ias.vflset/en_US/base.js
593291
425849
https://www.youtube.com/s/player/4eb6b35d/www-embed-player.vflset/www-embed-player.js
99836
45844
Serve static assets with an efficient cache policy — 32 resources found
Serial4u.com can speed up repeat visits by increasing the cache lifetime, which is essentially how long before a cached copy expires.
URL Cache TTL (Ms) Transfer Size (Bytes)
https://static.doubleclick.net/instream/ad_status.js
900000
865
https://www.google-analytics.com/plugins/ua/ec.js
3600000
1948
https://www.google-analytics.com/analytics.js
7200000
20664
https://static.hugedomains.com/js/hdv3-js/jquery.min.js
14400000
31963
https://static.hugedomains.com/css/hdv3-css/style.css?aa=2021-06-09a
14400000
27940
https://www.hugedomains.com/cdn-cgi/challenge-platform/h/b/scripts/alpha/invisible.js?ts=1669694400
14400000
16397
https://static.hugedomains.com/js/hdv3-js/intlTelInput.js
14400000
13746
https://static.hugedomains.com/css/hdv3-css/responsive.css?aa=2021-06-09a
14400000
13377
https://static.hugedomains.com/css/hdv3-css/hd-style.css
14400000
6671
https://static.hugedomains.com/js/hdv3-js/hd-js.js?a=20220124a
14400000
4073
https://static.hugedomains.com/js/hdv3-js/common.js
14400000
3477
https://static.hugedomains.com/js/hdv3-js/script.js
14400000
3321
https://static.hugedomains.com/images/hdv3-img/hugedomains_logo.svg
14400000
2965
https://static.hugedomains.com/images/hdv3-img/zero-side-ico.png
14400000
2767
https://static.hugedomains.com/images/hdv3-img/footer-logo-3.png
14400000
2738
https://static.hugedomains.com/images/hdv3-img/roket-side-ico.png
14400000
2541
https://static.hugedomains.com/images/hdv3-img/30daysmallico.png
14400000
2540
https://static.hugedomains.com/images/hdv3-img/footer-logo-2.png
14400000
2445
https://static.hugedomains.com/images/hdv3-img/footer-logo-5.png
14400000
2240
https://static.hugedomains.com/css/hdv3-css/reboot.min.css
14400000
2182
https://static.hugedomains.com/images/hdv3-img/footer-logo-4.png
14400000
1982
https://static.hugedomains.com/images/hdv3-img/safesmallico.png
14400000
1963
https://static.hugedomains.com/images/hdv3-img/cart.png
14400000
1706
https://static.hugedomains.com/images/hdv3-img/favorite-header.png
14400000
1644
https://static.hugedomains.com/images/hdv3-img/mail-icon.png
14400000
1586
https://static.hugedomains.com/images/hdv3-img/phone-icon.png
14400000
1513
https://static.hugedomains.com/images/hdv3-img/footer-logo-1.png
14400000
1507
https://static.hugedomains.com/images/hdv3-img/search-icon.png
14400000
1468
https://static.hugedomains.com/images/hdv3-img/test-content-img-left.png
14400000
1096
https://static.hugedomains.com/images/hdv3-img/test-content-img-right.png
14400000
1066
https://static.hugedomains.com/images/hdv3-img/qs-item-bg.png
14400000
965
https://p.typekit.net/p.css?s=1&k=zyw6mds&ht=tk&f=40411&a=11744788&app=typekit&e=css
604800000
336

Other

Ensure text remains visible during webfont load
Make use of the font-display CSS feature, which will ensure text is user-visible while webfonts are loading.
URL Potential Savings (Ms)
https://use.typekit.net/af/a91117/00000000000000003b9b257c/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n5&v=3
72.122000041418
https://fonts.gstatic.com/s/roboto/v18/KFOmCnqEu92Fr1Mu4mxKKTU1Kg.woff2
6.0520000988618
https://fonts.gstatic.com/s/roboto/v18/KFOlCnqEu92Fr1MmEU9fBBc4AMP6lQ.woff2
5.9420000761747
Reduce the impact of third-party code — Third-party code blocked the main thread for 270 ms
It is advised to either limit, remove or delay the loading of redundant third-party code which may be significantly impacting load performance.
Third-Party Transfer Size (Bytes) Main-Thread Blocking Time (Ms)
SHOW DETAILS
785783
270.454
SHOW DETAILS
52280
0
SHOW DETAILS
44469
0
SHOW DETAILS
24424
0
SHOW DETAILS
21255
0
SHOW DETAILS
15948
0
SHOW DETAILS
4282
0
SHOW DETAILS
3462
0
Some third-party resources can be lazy loaded with a facade — 1 facade alternative available
Consider replacing third-party embeds with a facade until they are required (use lazy loading).
Product Transfer Size (Bytes) Main-Thread Blocking Time (Ms)
YouTube Embedded Player (Video)
785783
270.454
Does not use passive listeners to improve scrolling performance
Improve the page's scroll performance by marking touch and wheel event listeners as 'passive'.
Source
SHOW DETAILS
Image elements do not have explicit `width` and `height`
Reduce layout shifts and improve CLS by setting explicit width and height properties on image elements.
URL
https://static.hugedomains.com/images/hdv3-img/hugedomains_logo.svg
https://static.hugedomains.com/images/hdv3-img/footer-logo-3.png
https://static.hugedomains.com/images/hdv3-img/footer-logo-5.png
https://static.hugedomains.com/images/hdv3-img/footer-logo-2.png
https://static.hugedomains.com/images/hdv3-img/footer-logo-4.png
https://static.hugedomains.com/images/hdv3-img/footer-logo-1.png
https://static.hugedomains.com/images/hdv3-img/roket-side-ico.png
https://static.hugedomains.com/images/hdv3-img/30daysmallico.png
https://static.hugedomains.com/images/hdv3-img/safesmallico.png
https://static.hugedomains.com/images/hdv3-img/mail-icon.png
https://static.hugedomains.com/images/hdv3-img/favorite-header.png
https://static.hugedomains.com/images/hdv3-img/cart.png
95

Accessibility

Indicates how accessible the page is and highlights opportunities where the page can be made more accessible to users of serial4u.com. This includes details about various page attributes that can be optimized.

Navigation

`[accesskey]` values are unique
Access keys assist users with focusing on different parts of the page. Each access key should be unique for proper navigation.
The page contains a heading, skip link, or landmark region
It is advised to provide ways to bypass repetitive content, allowing users to navigate the page efficiently.
`[id]` attributes on active, focusable elements are unique
Ensure all focusable elements have a unique id value to allow them to be visible to users of assistive technologies, like a screen reader.
No element has a `[tabindex]` value greater than 0
Although technically valid, a tabindex value greater than 0 often creates frustrating experiences for users who rely on assistive technologies.

ARIA

`[aria-*]` attributes match their roles
Avoid mismatching 'aria-*' attributes and their 'role' value, as it invalidates the attribute.
`button`, `link`, and `menuitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[aria-hidden="true"]` is not present on the document `<body>`
If aria-hidden=true is set on the document body, assistive technologies, like a screen reader will work inconsistently.
`[aria-hidden="true"]` elements do not contain focusable descendents
Interactive elements within an aria-hidden=true element are unavailable to users of assistive technologies, like a screen reader.
ARIA input fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when an input field does not have an accessible name specified.
ARIA `meter` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
ARIA `progressbar` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[role]`s have all required `[aria-*]` attributes
Some ARIA roles have required 'aria-*' attributes, which provide essential information about state and functionality.
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
Some ARIA parent roles cannot perform their intended functions if specific child roles are not used.
`[role]`s are contained by their required parent element
Some ARIA child roles cannot perform their intended functions if specific parent roles are not used.
`[role]` values are valid
All ARIA roles require valid values to perform their intended functions.
ARIA toggle fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when a toggle field does not have an accessible name specified.
ARIA `tooltip` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
ARIA `treeitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[aria-*]` attributes have valid values
ARIA attributes cannot be interpreted with invalid values when used by screen readers and other assistive technologies.
`[aria-*]` attributes are valid and not misspelled
ARIA attributes cannot be interpreted with invalid names when used by screen readers and other assistive technologies.
ARIA IDs are unique
Ensure all ARIA ID values are unique to prevent elements from being overlooked by assistive technologies, like a screen reader.

Names and labels

Buttons have an accessible name
Buttons become unusable as they are announced simply as "button" when the button does not have an accessible name, when used by screen readers and other assistive technologies.
Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
No form fields have multiple labels
Having multiple labels for form fields can be confusing to assistive technologies, like a screen reader.
Image elements have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
`<input type="image">` elements have `[alt]` text
Input buttons with alternative text assist screen readers and other assistive technology users to understand its purpose.
Form elements have associated labels
Screen readers and other assistive technologies rely on labels to properly announce form controls.
Links have a discernible name
In order to improve the navigation for screen reader and other assistive technology users, use link text that is unique, focusable and discernible.
`<object>` elements have alternate text
It is advised that alt text is used on '<object>' elements in order to provide meaning to screen reader and other assistive technology users, as these technologies are unable to translate non-text content.

Tables and lists

`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Screen readers and other assistive technologies may produce poor and inaccurate output when definition lists are not properly marked up.
Definition list items are wrapped in `<dl>` elements
In order for screen readers and other assistive technologies to properly announce definition list items ('<dt>' and '<dd>'), they must be wrapped in parent a '<dl>' element.
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
Use proper list structure to aid screen readers and other assistive technologies.
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
In order for screen readers to announce list items, ensure that list items ('<li>') are contained within parent '<ul>' or '<ol>' tags.
Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that '<td>' cells using the headers attribute only refer to other cells in the same table, to improve screen reader user experience.
`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that table headers refer to some set of cells, to improve screen reader user experience.

Internationalization and localization

`<html>` element has a `[lang]` attribute
It is advised to provide a lang attribute so that screen readers and other assistive technologies are guaranteed to announce the page's text correctly. When not provided, the user's default language setting will be used which may cause inaccuracies.
`<html>` element has a valid value for its `[lang]` attribute
Specify a valid BCP 47 language in order to help screen readers and other assistive technologies announce text properly.
`[lang]` attributes have a valid value
Specify a valid BCP 47 language on elements in order to help screen readers and other assistive technologies announce text properly.

Best practices

The document does not use `<meta http-equiv="refresh">`
Pages that refresh automatically cause a poor user experience as focus is directed back to the top of the page unexpectedly.
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
For users with low vision who rely on screen magnification, ensure that zooming is not disabled.

Audio and video

`<video>` elements contain a `<track>` element with `[kind="captions"]`
Serial4u.com may provide assistance to deaf or hearing-impaired users with captions on videos.

Contrast

Background and foreground colors do not have a sufficient contrast ratio.
Many (if not most) users find low-contrast text difficult or impossible to read.
Failing Elements
Search
Serial4u.com
$1,595
▸ Buy now
▸ Start payment plan
See details
1‑303‑893‑0552
- Jose Delacruz, July 19, 2022
- Steve Foose, July 18, 2022
- Dorian Dickinson, July 14, 2022
- Kajsa Fredriksson, July 13, 2022
- Christopher Vanderhorst, July 11, 2022
See more testimonials
See more FAQs
How do I transfer to another registrar such as GoDaddy?
How do I get the domain after the purchase?
What comes with the domain name?
Do you offer payment plans?
How do I keep my personal information private?
SerialEtv.com
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SerialNer.com
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SerialId.com
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Serial
4u

Names and labels

`<frame>` or `<iframe>` elements do not have a title
Screen reader users and other assistive technology users rely on frame titles to describe the contents of frames.
Failing Elements
div.testimonails-wrap > div.single-product-block > div.video-block > iframe

Navigation

Heading elements are not in a sequentially-descending order
Properly order all headers and do not skip heading levels to better the navigation and readability for users of assistive technologies, like a screen reader.
Failing Elements
Shop

Manual Checks

The page has a logical tab order
The visual layout should be logical in its tab order and users cannot focus elements that are offscreen.
Interactive controls are keyboard focusable
Ensure that custom interactive controls are keyboard focusable and that a focus indicator is displayed.
Interactive elements indicate their purpose and state
Ensure that interactive elements (such as links and buttons) are distinguishable from non-interactive elements and that they indicate their state.
The user's focus is directed to new content added to the page
When new content (such as a dialogue) is added to the page, the user's focus should be directed to it.
User focus is not accidentally trapped in a region
Avoid focus being accidentally trapped when a user tabs in and out of controls or regions on page.
Custom controls have associated labels
Ensure that custom interactive controls have associated labels, which are provided by aria-label and aria-labelledby attributes.
Custom controls have ARIA roles
Ensure that all custom interactive controls have appropriate ARIA roles.
Visual order on the page follows DOM order
Ensure that the DOM order matches with the page's visual order, in order to improve navigation for screen readers and other assistive technologies.
Offscreen content is hidden from assistive technology
Ensure that offscreen content is hidden through the use of "display:none" styling or the aria-hidden attribute.
HTML5 landmark elements are used to improve navigation
Elements such as <main> and <nav> are recommended as they are used by screen readers and other assistive technologies to improve keyboard navigation.
58

Best Practices

Indicates the recommended, best practices currently in place on the page and highlights the best practices that serial4u.com should incorporate. This includes practices such as protecting pages with HTTPS.

Audits

Avoids requesting the geolocation permission on page load
When requesting a user's location, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Avoids requesting the notification permission on page load
When requesting permission to send notifications, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Ensure CSP is effective against XSS attacks
Significantly reduce the risk of cross-site scripting attacks (XSS) by ensuring you have a strong Content Security Policy (CSP).
Description Directive Severity
No CSP found in enforcement mode
High

Audits

Allows users to paste into password fields
Ensure that password inputs may be pasted into to aid in the user's ability to use password managers and improve security.
Displays images with correct aspect ratio
Ensure that image display dimensions match their natural aspect ratio.
Serves images with appropriate resolution
For maximum image clarity, ensure images have natural dimensions and are proportional to the display size and pixel ratio.
Fonts with `font-display: optional` are preloaded
It is recommended that optional fonts are preloaded.

Audits

Page has the HTML doctype
Ensure a doctype is specified to prevent the browser from switching to quirks-mode.
Properly defines charset
It is advised to declare a character encoding, optionally via a <meta> tag in the first 1024 bytes of the HTML or in the Content-Type HTTP response header.

Audits

Detected JavaScript libraries
Below is a list of all front-end JavaScript libraries that were detected on the page.
Name Version
jQuery
3.2.1
Page has valid source maps
Consider deploying source maps for added benefits such as the ability to debug while in production.
URL Map URL
https://www.google.com/js/th/YkfklCtf3s5-_1quWHAnTHHVaBZ-i7ToAeXFpu3i2Ro.js

Audits

Does not use HTTPS — 1 insecure request found
Ensure that all pages are protected with HTTPS (including those that do not handle sensitive data) as HTTPS prevents tampering and passive listening on communications between the app and its users. Additionally, HTTPS is a prerequisite for HTTP/2 and many new web platform APIs.
Insecure URL Request Resolution
http://serial4u.com/
Allowed
Includes front-end JavaScript libraries with known security vulnerabilities — 3 vulnerabilities detected
Ensure that the use of third-party scripts is minimal and that only trusted third-party scripts are used as some may contain known security vulnerabilities which may be exploited by attackers.
Library Version Vulnerability Count Highest Severity
SHOW DETAILS
3
Medium

Audits

Uses deprecated APIs — 2 warnings found
Avoid deprecated APIs which will eventually be removed the browser.
Deprecation / Warning Source
`window.webkitStorageInfo` is deprecated. Please use `navigator.webkitTemporaryStorage` or `navigator.webkitPersistentStorage` instead.
SHOW DETAILS
...
SHOW DETAILS
Browser errors were logged to the console
Below is a list of all errors logged to the console, which indicate unresolved problems on the site.
Source Description
SHOW DETAILS
Failed to load resource: the server responded with a status of 500 (Internal Server Error)
SHOW DETAILS
Failed to load resource: the server responded with a status of 500 (Internal Server Error)
Issues were logged in the `Issues` panel in Chrome Devtools
There may be unresolved issues logged to Chrome Devtools.
Issue type
Cookie
92

SEO

Indicates how well the page is optimized for ranking in search engines and highlights Search Engine Optimization (SEO) opportunities for serial4u.com. This includes optimizations such as providing meta data.

Mobile Friendly

Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of serial4u.com on mobile screens.
Document uses legible font sizes
Font sizes of 12px or less are too small to most mobile users without user gestures and further action. Aim for more than 60% of page text to use font sizes greater than 12px.
Tap targets are sized appropriately
Interactive elements (such as buttons and links) should be appropriately spaced, sized and easy enough to select or tap with regard to their surrounding elements.

Content Best Practices

Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
Document has a meta description
Meta descriptions may be used by search engines when displaying a link to the page and should concisely summarize the page's content.
Image elements have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
Document has a valid `hreflang`
Search engines can be instructed to list specific versions of a page for a given language or region through the use of hreflang links.
Document has a valid `rel=canonical`
Search engines can be suggested which URL should be shown in search results through the use of canonical links.
Document avoids plugins
The content of plugins cannot be indexed by search engines and many devices either restrict or do not support them.

Crawling and Indexing

Page has successful HTTP status code
Avoid pages with unsuccessful HTTP status codes as they may not be indexed by search engines.
Links are crawlable
Ensure that the 'href' attribute of anchor elements links to the appropriate destination. This allows for more pages of the site to be discovered by search engines.
Page isn’t blocked from indexing
Pages that cannot be crawled by search engines cannot be indexed or included in their search results. Ensure that search engines have permission to crawl all pages that should be indexed.
robots.txt is valid
Malformed robots.txt files prevent crawlers from understanding how a site wants to be crawled or indexed, which can be devastating to SEO.

Content Best Practices

Links do not have descriptive text — 1 link found
Make use of descriptive link text to assist search engines in understanding the content.

Manual Checks

Structured data is valid
Structured data can be validated through the use of the Structured Data Testing Tool and the Structured Data Linter.
22

PWA

Indicates how valid the aspects of a Progressive Web App (PWA) are for the page and highlights opportunities to enable/improve the PWA of serial4u.com. This includes details about web app manifests.

PWA Optimized

Content is sized correctly for the viewport
Ensure that the width of the app's content matches the width of the viewport, otherwise the app might not be optimized for mobile screens.
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of serial4u.com on mobile screens.

Installable

Web app manifest or service worker do not meet the installability requirements — 1 reason
User engagement may be increased by leveraging the browsers ability to proactively prompt users to add the app to their homescreen.
Failure reason
No manifest was fetched

PWA Optimized

Does not register a service worker that controls page and `start_url`
A service worker is used to provide Progressive Web Apps the use of features such as working offline, the ability for the app to be added to the homescreen as well as push notifications.
Is not configured for a custom splash screen
Themed splash screens ensure a high-quality user experience at launch for app users.
View Data
Does not set a theme color for the address bar.
A theme may be applied to the browser address bar, which ideally can be made to match the site.
View Data
Does not provide a valid `apple-touch-icon`
iOS users of Progressive Web Apps will benefit from an apple touch icon, which can be defined with 'apple-touch-icon', which must point to a non-transparent 192px (or 180px) square PNG.
Manifest doesn't have a maskable icon
Maskable icons are great to ensure that images fill the entire shape when installing the app on a device.

Manual Checks

Site works cross-browser
Ensure that the Progressive Web App works correctly across every major browser.
Page transitions don't feel like they block on the network
Users perceive apps with responsive, snappy transitions as higher peforming and ensures a great user experience, even on a slow network.
Each page has a URL
Ensure that all pages are deep linkable via URL. They should also be unique for the purpose of shareability on social media.
Avg. (All Categories) 63
Performance 41
Accessibility 93
Best Practices 58
SEO 93
PWA 30
0–49 (Fail) 50–89 (Average) 90–100 (Pass)
URL: https://www.hugedomains.com/domain_profile.cfm
Updated: 29th November, 2022

3.22 seconds
First Contentful Paint (FCP)
42%
30%
28%

0.03 seconds
First Input Delay (FID)
83%
10%
7%

Simulate loading on mobile
41

Performance

Indicates how well the page is performing and highlights opportunities where performance may be improved for serial4u.com. This includes details about optimizing page load times which can result in a better user experience.

Metrics

Cumulative Layout Shift — 0.046
Cumulative Layout Shift is the measurement of visible elements collective movement within the viewport.
View Data

Other

Properly size images
Images can slow down the page's load time. Serial4u.com should consider serving more appropriate-sized images.
Defer offscreen images
Time to Interactive can be slowed down by resources on the page. Serial4u.com should consider lazy-loading offscreen and hidden images.
Minify CSS
Cascading Style Sheets (CSS) files can contribute to network payload sizes. Serial4u.com should consider minifying CSS files.
Minify JavaScript
JavaScript (JS) files can contribute to network payload sizes and increase script parse times. Serial4u.com should consider minifying JS files.
Efficiently encode images
Unoptimized images can consume more cellular data than what is necessary.
Serve images in next-gen formats
Consider JPEG 2000, JPEG XR or WebP image formats which provide better compression than PNG and JPEG.
Enable text compression
Text-based resources should be served with compression, such as gzip, deflate or brotli.
Preconnect to required origins
Resource hints, such as 'preconnect' or 'dns-prefetch', may assist in establishing early connections to important third-party origins.
Initial server response time was short — Root document took 130 ms
It is advised to keep the server response time short for the main document, because all other requests depend on it.
URL Time Spent (Ms)
https://www.hugedomains.com/domain_profile.cfm?d=serial4u.com
125.039
Avoid multiple page redirects — Potential savings of 630 ms
Redirects can cause additional delays before the page can begin loading. Serial4u.com should avoid multiple or unnecessary page redirects.
URL Time Spent (Ms)
http://serial4u.com/
630
https://www.hugedomains.com/domain_profile.cfm?d=serial4u.com
0
Preload key requests
Key requests can be preloaded by using '<link rel=preload>'. Serial4u.com should consider using '<link rel=preload>' to prioritize fetching resources that are currently requested later in page load.
Use video formats for animated content
Large GIFs are inefficient for delivering animated content. It is recommended to use MPEG4/WebM videos for animations and PNG/WebP for static images instead of GIF.
Remove duplicate modules in JavaScript bundles
Ensure that no duplicate JavaScript modules from bundles exist to reduce bytes consumed by network activity.
Avoid serving legacy JavaScript to modern browsers — Potential savings of 0 KiB
Polyfills and transforms enable legacy browsers to use new JavaScript features. For bundled JavaScript it is recommended to adopt a modern script deployment strategy using module/nomodule feature detection. This will reduce the amount of code shipped to modern browsers.
URL Potential Savings (Bytes)
https://static.hugedomains.com/js/hdv3-js/intlTelInput.js
55
Preload Largest Contentful Paint image
It is recommended to preload images used by LCP elements, to improve LCP time.
Avoids enormous network payloads — Total size was 1,124 KiB
Large network payloads can cost users money and are linked to long load times.
URL Transfer Size (Bytes)
https://www.youtube.com/s/player/4eb6b35d/player_ias.vflset/en_US/base.js
593291
https://www.youtube.com/s/player/4eb6b35d/www-embed-player.vflset/www-embed-player.js
99836
https://www.youtube.com/s/player/4eb6b35d/www-player.css
50582
https://www.googletagmanager.com/gtag/js?id=UA-7117339-4
44464
https://static.hugedomains.com/js/hdv3-js/jquery.min.js
31969
https://jnn-pa.googleapis.com/$rpc/google.internal.waa.v1.Waa/Create
31523
https://static.hugedomains.com/css/hdv3-css/style.css?aa=2021-06-09a
27938
https://www.youtube.com/embed/bqLUp7GuUTg?rel=0&autoplay=0&showinfo=0&controls=0
27795
https://www.google-analytics.com/analytics.js
20663
https://use.typekit.net/af/a91117/00000000000000003b9b257c/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n5&v=3
19926
Avoids an excessive DOM size — 487 elements
A large DOM (Document Object Model) will increase memory usage, cause longer system calculations as well as costly layout reflows.
Statistic Element Value
Total DOM Elements
487
Maximum DOM Depth
div.tablet-block-left > button#hdv3Billboard197BuyTabProceID > div#circularG > div#circularG_1
13
Maximum Child Elements
Serial4u.com This domain is for sale: $1,595 ▸ Buy now or ▸ Start payment pla…
14
Avoid chaining critical requests — 14 chains found
Below is a list of Critical Request Chains, which shows which resources are loaded with a high priority. Serial4u.com should consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.
User Timing marks and measures — 8 user timings
Make use of the User Timing API to measure an app's real-world performance during key user experiences.
Name Type Start Time (Ms) Duration (Ms)
mark_pe
Mark
1729.343
mark_pot_isc
Mark
2008.501
mark_pot_ist
Mark
2011.883
mark_fs
Mark
2033.791
mark_qoes
Mark
2108.25
mark_pot_if
Mark
3541.324
mark_pot_cms
Mark
3601.59
mark_pot_cmf
Mark
3604.961
Keep request counts low and transfer sizes small — 69 requests • 1,124 KiB
It is advised to add a budgets.json file in order to set budgets for the quantity and size of page resources.
Resource Type Requests Transfer Size (Bytes)
Total
69
1151006
Script
15
860736
Stylesheet
9
107855
Font
4
57095
Other
17
50792
Document
2
37687
Image
22
36841
Media
0
0
Third-party
34
971850
Largest Contentful Paint element — 1 element found
The element which was identified as the Largest Contentful Paint.
Element
Questions? Talk to a domain expert: 1‑303‑893‑0552
Largest Contentful Paint image was not lazily loaded
Above-the-fold images that are lazily loaded render later in the page lifecycle, which can delay the largest contentful paint.
Avoid large layout shifts — 5 elements found
Below is a list of all DOM elements that contribute to the CLS of the page.
Element CLS Contribution
Questions? Talk to a domain expert: 1‑303‑893‑0552
0.02568067286036
Favorite Hurry, 7 people have it in their carts
0.011655074605856
Enjoy zero percent financing Quick delivery of the domain Safe and secure shopp…
0.0080005173141892
Search
0.00036971028645833
section.buy-now > div.container > div.single-product-block > div.leftRightMargin20Mobile560
0.00034570136542793
Avoids `document.write()`
Avoid or limit the use of external scripts that are dynamically injected via 'document.write()' as users on slow connections will be delayed by tens of seconds.
Avoid long main-thread tasks — 20 long tasks found
Below is a list of the longest tasks on the main thread, which is useful when identifying the worst input delay contributors.
URL Start Time (Ms) Duration (Ms)
https://www.hugedomains.com/cdn-cgi/challenge-platform/h/b/scripts/alpha/invisible.js?ts=1669694400
6006
1449
https://www.youtube.com/s/player/4eb6b35d/player_ias.vflset/en_US/base.js
10140
1288
https://www.youtube.com/s/player/4eb6b35d/player_ias.vflset/en_US/base.js
13839
1008
https://www.youtube.com/s/player/4eb6b35d/player_ias.vflset/en_US/base.js
12864
975
https://www.youtube.com/s/player/4eb6b35d/www-embed-player.vflset/www-embed-player.js
11767
646
https://www.google-analytics.com/analytics.js
5161
361
https://www.youtube.com/s/player/4eb6b35d/fetch-polyfill.vflset/fetch-polyfill.js
11428
339
https://www.hugedomains.com/domain_profile.cfm?d=serial4u.com
1574
295
Unattributable
1942
295
Unattributable
1039
291
https://www.youtube.com/embed/bqLUp7GuUTg?rel=0&autoplay=0&showinfo=0&controls=0
3395
287
https://www.google-analytics.com/analytics.js
5725
281
Unattributable
2474
276
Unattributable
630
269
https://www.youtube.com/s/player/4eb6b35d/player_ias.vflset/en_US/base.js
14847
267
https://static.hugedomains.com/js/hdv3-js/jquery.min.js
4902
259
Unattributable
1330
244
Unattributable
2244
230
https://static.hugedomains.com/js/hdv3-js/intlTelInput.js
5522
203
https://www.hugedomains.com/domain_profile.cfm?d=serial4u.com
3240
155
Avoid non-composited animations
It is recommended to avoid non-composited animations which are often janky and increase CLS.
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of serial4u.com on mobile screens.
Avoids `unload` event listeners
The 'unload' event does not fire reliably, causing issues with browser optimizations such as the Back-Forward Cache. It is recommended that 'pagehide' or 'visibilitychange' events are used instead.

Budgets

Performance budget
It is advised to keep the quantity and size of all network requests under the targets set by the provided performance budget.
Timing budget
It is advised to set a timing budget to monitor the performance of your site.

Audits

Network Requests
Below is a list of network requests that were made during page load.
URL Protocol Start Time (Ms) End Time (Ms) Transfer Size (Bytes) Resource Size (Bytes) Status Code MIME Type Resource Type
http://serial4u.com/
http/1.1
0
99.646999995457
220
0
302
text/plain
https://www.hugedomains.com/domain_profile.cfm?d=serial4u.com
h2
99.965999994311
224.00999999081
9892
43028
200
text/html
Document
https://cdn.jsdelivr.net/gh/fancyapps/fancybox@3.5.7/dist/jquery.fancybox.min.css
h2
235.60799998813
300.65999999351
4282
12795
200
text/css
Stylesheet
https://static.hugedomains.com/css/hdv3-css/reboot.min.css
h2
235.89299999003
299.34199999843
2178
3976
200
text/css
Stylesheet
https://static.hugedomains.com/css/hdv3-css/style.css?aa=2021-06-09a
h2
236.08899999817
303.73799998779
27938
162500
200
text/css
Stylesheet
https://static.hugedomains.com/css/hdv3-css/responsive.css?aa=2021-06-09a
h2
236.4430000016
301.10099999001
13381
65093
200
text/css
Stylesheet
https://static.hugedomains.com/css/hdv3-css/hd-style.css
h2
236.82499999995
299.80799999612
6669
27999
200
text/css
Stylesheet
https://fonts.googleapis.com/css?family=Noto+Sans:400,700&display=swap
h2
237.01799999981
251.67199999851
1496
5230
200
text/css
Stylesheet
https://use.typekit.net/zyw6mds.css
h2
237.18699999154
312.65699998767
993
1231
200
text/css
Stylesheet
https://www.googletagmanager.com/gtag/js?id=UA-7117339-4
h2
401.73299999151
418.73499999929
44464
111645
200
application/javascript
Script
https://static.hugedomains.com/images/hdv3-img/hugedomains_logo.svg
h2
401.84900000168
501.12599998829
2955
5353
200
image/svg+xml
Image
https://static.hugedomains.com/images/hdv3-img/phone-icon.png
h2
402.03099999053
500.84799999604
1515
743
200
image/png
Image
https://static.hugedomains.com/images/hdv3-img/search-icon.png
h2
402.22299999732
428.08199999854
1468
700
200
image/png
Image
https://static.hugedomains.com/images/hdv3-img/favorite-header.png
h2
402.35699999903
500.24599999597
1644
874
200
image/png
Image
https://static.hugedomains.com/images/hdv3-img/cart.png
h2
402.5549999933
426.69599999499
1705
940
200
image/png
Image
https://static.hugedomains.com/images/hdv3-img/30daysmallico.png
h2
402.79399999417
427.36599998898
2536
1769
200
image/png
Image
https://static.hugedomains.com/images/hdv3-img/roket-side-ico.png
h2
402.94899999571
428.82999998983
2540
1764
200
image/png
Image
https://static.hugedomains.com/images/hdv3-img/safesmallico.png
h2
403.06399999827
501.37299999187
1959
1192
200
image/png
Image
https://static.hugedomains.com/images/hdv3-img/zero-side-ico.png
h2
403.25199998915
501.61199999275
2765
1994
200
image/png
Image
https://static.hugedomains.com/images/hdv3-img/mail-icon.png
h2
403.40999999898
427.16700000165
1589
817
200
image/png
Image
https://static.hugedomains.com/images/hdv3-img/footer-logo-1.png
h2
403.67099999276
499.22899999365
1505
738
200
image/png
Image
https://static.hugedomains.com/images/hdv3-img/footer-logo-2.png
h2
403.9449999982
428.49700000079
2443
1673
200
image/png
Image
https://static.hugedomains.com/images/hdv3-img/footer-logo-3.png
h2
404.16399999231
499.67299999844
2736
1967
200
image/png
Image
https://static.hugedomains.com/images/hdv3-img/footer-logo-4.png
h2
404.33499999926
500.59599999804
1988
1216
200
image/png
Image
https://static.hugedomains.com/images/hdv3-img/footer-logo-5.png
h2
404.46499999962
499.96399998781
2244
1469
200
image/png
Image
https://static.hugedomains.com/js/hdv3-js/jquery.min.js
h2
311.69999999111
399.18999999645
31969
86659
200
application/javascript
Script
https://static.hugedomains.com/js/hdv3-js/intlTelInput.js
h2
317.46299999941
400.21500000148
13754
42142
200
application/javascript
Script
https://static.hugedomains.com/js/hdv3-js/script.js
h2
401.12699999008
426.39399999462
3326
9938
200
application/javascript
Script
https://static.hugedomains.com/js/hdv3-js/common.js
h2
401.39299999282
430.91899999126
3473
8681
200
application/javascript
Script
https://static.hugedomains.com/js/hdv3-js/hd-js.js?a=20220124a
h2
401.54099999927
502.15000000026
4066
23521
200
application/javascript
Script
https://p.typekit.net/p.css?s=1&k=zyw6mds&ht=tk&f=40411&a=11744788&app=typekit&e=css
h2
317.8259999986
340.60999999929
336
5
200
text/css
Stylesheet
https://fonts.gstatic.com/s/notosans/v27/o-0IIpQlx3QUlC5A4PNr5TRASf6M7Q.woff2
h2
411.50599998946
414.93299999274
13778
12852
200
font/woff2
Font
https://use.typekit.net/af/a91117/00000000000000003b9b257c/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n5&v=3
h2
425.61999999452
525.33699999913
19926
19608
200
application/font-woff2
Font
https://static.hugedomains.com/images/hdv3-img/test-content-img-left.png
h2
507.24700000137
530.74699999706
1088
322
200
image/png
Image
https://static.hugedomains.com/images/hdv3-img/test-content-img-right.png
h2
507.37999999546
532.90299999935
1064
292
200
image/png
Image
https://www.youtube.com/embed/bqLUp7GuUTg?rel=0&autoplay=0&showinfo=0&controls=0
h2
607.97199999797
699.28000000073
27795
68918
200
text/html
Document
https://static.hugedomains.com/images/hdv3-img/qs-item-bg.png
h2
628.80599999335
698.72499999474
963
198
200
image/png
Image
https://www.hugedomains.com/rjs/gen-hdc.cfm?s=https://www.hugedomains.com/domain_profile.cfm?d=serial4u.com&r=
h2
729.32600000058
847.48699999182
1178
0
200
text/html
XHR
https://www.hugedomains.com/rjs/favorite-domain.cfm
h2
808.61300000106
899.37099999224
674
1
200
text/html
XHR
https://www.hugedomains.com/rjs/hdv3-rjs/hurry-cart.cfm
h2
808.96399999619
1000.2269999968
717
38
200
text/html
XHR
https://www.hugedomains.com/rjs/favorite-domain.cfm
h2
809.11399998877
903.16499999608
668
1
200
text/html
XHR
https://www.youtube.com/s/player/4eb6b35d/www-player.css
h2
899.25299999595
927.84499999834
50582
367775
200
text/css
Stylesheet
https://www.youtube.com/s/player/4eb6b35d/www-embed-player.vflset/www-embed-player.js
h2
899.94899999874
909.72099998908
99836
319338
200
text/javascript
Script
https://www.youtube.com/s/player/4eb6b35d/player_ias.vflset/en_US/base.js
h2
900.2130000008
1010.8349999937
593291
2133807
200
text/javascript
Script
https://www.youtube.com/s/player/4eb6b35d/fetch-polyfill.vflset/fetch-polyfill.js
h2
900.54499999678
905.31099999498
3587
9615
200
text/javascript
Script
https://www.google-analytics.com/analytics.js
h2
913.56899999664
917.51499999373
20663
50230
200
text/javascript
Script
https://www.hugedomains.com/cdn-cgi/challenge-platform/h/b/scripts/alpha/invisible.js?ts=1669694400
h2
922.94199999014
999.44899999537
15185
34908
200
application/javascript
Script
https://fonts.gstatic.com/s/roboto/v18/KFOmCnqEu92Fr1Mu4mxKKTU1Kg.woff2
h2
929.6319999994
933.14100000134
11676
10748
200
font/woff2
Font
https://fonts.gstatic.com/s/roboto/v18/KFOlCnqEu92Fr1MmEU9fBBc4AMP6lQ.woff2
h2
931.35400000028
999.8409999971
11715
10788
200
font/woff2
Font
https://www.google-analytics.com/plugins/ua/ec.js
h2
1118.175999989
1122.2169999965
1949
2779
200
text/javascript
Script
https://www.google-analytics.com/j/collect?v=1&_v=j98&a=1674716134&t=pageview&_s=1&dl=https%3A%2F%2Fwww.hugedomains.com%2Fdomain_profile.cfm%3Fd%3Dserial4u.com&ul=en-us&de=UTF-8&dt=Serial4u.com%20is%20for%20sale%20%7C%20HugeDomains&sd=24-bit&sr=360x640&vp=360x640&je=0&_u=4GBAAUALAAAAACAAI~&jid=1569623109&gjid=745844516&cid=212077061.1669697039&tid=UA-7117339-4&_gid=470387794.1669697039&_r=1&gtm=2oub90&z=878234349
h2
1133.67499999
1198.6839999881
618
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200
text/plain
XHR
https://www.google-analytics.com/collect?v=1&_v=j98&a=1674716134&t=event&_s=2&dl=https%3A%2F%2Fwww.hugedomains.com%2Fdomain_profile.cfm%3Fd%3Dserial4u.com&ul=en-us&de=UTF-8&dt=Serial4u.com%20is%20for%20sale%20%7C%20HugeDomains&sd=24-bit&sr=360x640&vp=360x640&je=0&ec=general&ea=pageLoad&_u=4GBAAUALAAAAACAAI~&jid=&gjid=&cid=212077061.1669697039&tid=UA-7117339-4&_gid=470387794.1669697039&gtm=2oub90&cd3=HDv3&z=1041030165
h2
1200.3049999912
1203.9850000001
597
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200
image/gif
Image
https://stats.g.doubleclick.net/j/collect?t=dc&aip=1&_r=3&v=1&_v=j98&tid=UA-7117339-4&cid=212077061.1669697039&jid=1569623109&gjid=745844516&_gid=470387794.1669697039&_u=4GBAAUAKAAAAACAAI~&z=1284780410
h2
1300.4019999935
1304.7459999943
691
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200
text/plain
XHR
https://www.google-analytics.com/collect?v=1&_v=j98&a=1674716134&t=event&ni=1&_s=3&dl=https%3A%2F%2Fwww.hugedomains.com%2Fdomain_profile.cfm%3Fd%3Dserial4u.com&ul=en-us&de=UTF-8&dt=Serial4u.com%20is%20for%20sale%20%7C%20HugeDomains&sd=24-bit&sr=360x640&vp=360x640&je=0&ec=engagement&ea=view_item&_u=6GBAAUALAAAAACAMI~&jid=&gjid=&cid=212077061.1669697039&tid=UA-7117339-4&_gid=470387794.1669697039&gtm=2oub90&pal=Product%20Page&pa=detail&pr1nm=Serial4u.com&pr1qt=1&pr1pr=1595&z=219836536
h2
1308.17199999
1311.5549999929
596
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200
image/gif
Image
https://www.google.com/ads/ga-audiences?t=sr&aip=1&_r=4&slf_rd=1&v=1&_v=j98&tid=UA-7117339-4&cid=212077061.1669697039&jid=1569623109&_u=4GBAAUAKAAAAACAAI~&z=2147045949
h2
1313.9699999883
1321.4279999956
673
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200
image/gif
Image
https://www.hugedomains.com/cdn-cgi/challenge-platform/h/b/scripts/pica.js
h2
1314.3229999987
1364.1700000007
8554
19632
200
application/javascript
Other
https://googleads.g.doubleclick.net/pagead/id
http/1.1
1829.3469999917
1912.5609999901
913
0
302
text/html
https://static.doubleclick.net/instream/ad_status.js
h2
1900.564999989
1904.1649999999
865
29
200
text/javascript
Script
https://googleads.g.doubleclick.net/pagead/id?slf_rd=1
h2
1912.9489999905
1918.765999988
993
100
200
application/json
XHR
https://jnn-pa.googleapis.com/$rpc/google.internal.waa.v1.Waa/Create
h2
2015.2119999984
2019.8640000017
675
0
200
text/html
Preflight
https://jnn-pa.googleapis.com/$rpc/google.internal.waa.v1.Waa/Create
h2
2020.3529999999
2099.0079999901
31523
66969
200
application/json+protobuf
XHR
https://www.youtube.com/api/stats/qoe?cpn=Da8TL1GTv8DH6NpR&el=embedded&ns=yt&fexp=23983296%2C24001373%2C24002022%2C24002025%2C24004644%2C24007246%2C24080738%2C24135310%2C24169501%2C24255165%2C24292955%2C24293803%2C24406605%2C24407200%2C24408610%2C24414162%2C24415864%2C24423785%2C24425860&cl=489849437&seq=1&event=streamingstats&docid=bqLUp7GuUTg&cbrand=motorola&cbr=Chrome%20Mobile&cbrver=94.0.4590.2&c=WEB_EMBEDDED_PLAYER&cver=1.20221120.00.00&cplayer=UNIPLAYER&cmodel=moto%20g%20(4)&cos=Android&cosver=7.0&cplatform=MOBILE&vps=0.000:N,0.000:ER&cmt=0.000:0.000,0.000:0.000&error=0.000:html5.missingapi::0.000:nocodecs.1;a6s.0&vis=0.000:0&bh=0.000:0.000
h2
2119.6829999972
2125.1379999885
569
0
204
text/html
XHR
https://www.google.com/js/th/YkfklCtf3s5-_1quWHAnTHHVaBZ-i7ToAeXFpu3i2Ro.js
h2
2204.0429999906
2208.8379999914
15275
37144
200
text/javascript
Script
https://www.youtube.com/s/player/4eb6b35d/player_ias.vflset/en_US/embed.js
h2
2233.5019999882
2237.2879999893
9033
26300
200
text/javascript
Script
https://jnn-pa.googleapis.com/$rpc/google.internal.waa.v1.Waa/GenerateIT
h2
2804.7589999915
2813.7389999902
675
0
200
text/html
Preflight
https://jnn-pa.googleapis.com/$rpc/google.internal.waa.v1.Waa/GenerateIT
h2
2815.6239999953
2823.0039999908
789
94
200
application/json+protobuf
XHR
https://www.hugedomains.com/cdn-cgi/challenge-platform/h/b/cv/result/7718af753bcd81ca
h2
3533.8530000008
3575.5659999995
827
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200
text/plain
XHR
https://www.youtube.com/generate_204?RNg7bQ
h2
4126.3159999944
4199.4159999886
268
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204
text/plain
Image
https://www.youtube.com/youtubei/v1/log_event?alt=json&key=AIzaSyAO_FJ2SlqU8Q4STEHLGCilw_Y9_11qcW8
h2
5806.734999991
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application/json
XHR
Network Round Trip Times — 0 ms
High Network RTT (Round Trip Times) can have a large impact on performance. Providing servers geographically closer to the user could improve performance.
Server Backend Latencies — 0 ms
High server latencies indicate the server is overloaded or has a poor backend performance.
Tasks
Below is a list of the top-level main thread tasks that executed during page load.
Start Time (Ms) End Time (Ms)
228.006
73.629
311.657
5.561
403.942
15.178
424.129
5.513
432.869
67.315
505.459
21.365
532.291
69.777
604.105
22.651
627.291
77.277
707.143
10.856
721.763
101.419
823.28
5.139
829.531
71.837
901.577
15.801
926.357
6.209
936.162
64.661
1003.08
13.823
1029.623
72.778
1105.004
5.872
1110.916
90.25
1201.317
24.422
1231.077
70.21
1301.345
7.291
1338.415
61.036
1427.842
73.635
1501.487
321.939
1823.699
84.73
1913.781
323.013
2242.266
57.47
2303.289
504.077
2810.385
724.567
3538.653
66.798
3606.344
7.57
3618.491
15.551
3634.056
7.133
3641.733
487.266
4130.831
68.885
5799.734
9.346
Diagnostics
Below is a collection of useful page vitals.
View Data
Metrics
Below is a collection of metrics.
View Data
Script Treemap Data
Provide as required, for treemap app.

Metrics

Largest Contentful Paint — 3.4 s
The timing of the largest text or image that is painted.

Audits

First Meaningful Paint — 3.1 s
The time taken for the primary content of the page to be rendered.

Other

Reduce unused CSS — Potential savings of 84 KiB
Dead and/or unused rules in Style Sheets (CSS) can contribute to network payload sizes. Serial4u.com should consider removing dead rules from style sheets and deferring the loading of CSS not used for above-the-fold content.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://www.youtube.com/s/player/4eb6b35d/www-player.css
50582
48855
https://static.hugedomains.com/css/hdv3-css/style.css?aa=2021-06-09a
27938
25779
https://static.hugedomains.com/css/hdv3-css/responsive.css?aa=2021-06-09a
13381
11330
Serve static assets with an efficient cache policy — 32 resources found
Serial4u.com can speed up repeat visits by increasing the cache lifetime, which is essentially how long before a cached copy expires.
URL Cache TTL (Ms) Transfer Size (Bytes)
https://static.doubleclick.net/instream/ad_status.js
900000
865
https://www.google-analytics.com/plugins/ua/ec.js
3600000
1949
https://www.google-analytics.com/analytics.js
7200000
20663
https://static.hugedomains.com/js/hdv3-js/jquery.min.js
14400000
31969
https://static.hugedomains.com/css/hdv3-css/style.css?aa=2021-06-09a
14400000
27938
https://www.hugedomains.com/cdn-cgi/challenge-platform/h/b/scripts/alpha/invisible.js?ts=1669694400
14400000
15185
https://static.hugedomains.com/js/hdv3-js/intlTelInput.js
14400000
13754
https://static.hugedomains.com/css/hdv3-css/responsive.css?aa=2021-06-09a
14400000
13381
https://static.hugedomains.com/css/hdv3-css/hd-style.css
14400000
6669
https://static.hugedomains.com/js/hdv3-js/hd-js.js?a=20220124a
14400000
4066
https://static.hugedomains.com/js/hdv3-js/common.js
14400000
3473
https://static.hugedomains.com/js/hdv3-js/script.js
14400000
3326
https://static.hugedomains.com/images/hdv3-img/hugedomains_logo.svg
14400000
2955
https://static.hugedomains.com/images/hdv3-img/zero-side-ico.png
14400000
2765
https://static.hugedomains.com/images/hdv3-img/footer-logo-3.png
14400000
2736
https://static.hugedomains.com/images/hdv3-img/roket-side-ico.png
14400000
2540
https://static.hugedomains.com/images/hdv3-img/30daysmallico.png
14400000
2536
https://static.hugedomains.com/images/hdv3-img/footer-logo-2.png
14400000
2443
https://static.hugedomains.com/images/hdv3-img/footer-logo-5.png
14400000
2244
https://static.hugedomains.com/css/hdv3-css/reboot.min.css
14400000
2178
https://static.hugedomains.com/images/hdv3-img/footer-logo-4.png
14400000
1988
https://static.hugedomains.com/images/hdv3-img/safesmallico.png
14400000
1959
https://static.hugedomains.com/images/hdv3-img/cart.png
14400000
1705
https://static.hugedomains.com/images/hdv3-img/favorite-header.png
14400000
1644
https://static.hugedomains.com/images/hdv3-img/mail-icon.png
14400000
1589
https://static.hugedomains.com/images/hdv3-img/phone-icon.png
14400000
1515
https://static.hugedomains.com/images/hdv3-img/footer-logo-1.png
14400000
1505
https://static.hugedomains.com/images/hdv3-img/search-icon.png
14400000
1468
https://static.hugedomains.com/images/hdv3-img/test-content-img-left.png
14400000
1088
https://static.hugedomains.com/images/hdv3-img/test-content-img-right.png
14400000
1064
https://static.hugedomains.com/images/hdv3-img/qs-item-bg.png
14400000
963
https://p.typekit.net/p.css?s=1&k=zyw6mds&ht=tk&f=40411&a=11744788&app=typekit&e=css
604800000
336

Metrics

First Contentful Paint — 3.1 s
The time taken for the first image or text on the page to be rendered.
Time to Interactive — 15.0 s
The time taken for the page to become fully interactive.
Speed Index — 6.3 s
The time taken for the page contents to be visibly populated.
Total Blocking Time — 6,900 ms
The total blocking time is the sum of all time periods between First Contentful Paint and Time to Interactive (when task length exceeded 50ms).

Audits

Max Potential First Input Delay — 1,450 ms
Users could experience a delay when interacting with the page.

Other

Eliminate render-blocking resources — Potential savings of 1,680 ms
Resources, such as JavaScript and style sheets, can block the first paint of the page. Serial4u.com should consider delivering critical JavaScript/style sheets (JS/CSS) inline and deferring all non-critical JS/CSS.
URL Transfer Size (Bytes) Potential Savings (Ms)
https://cdn.jsdelivr.net/gh/fancyapps/fancybox@3.5.7/dist/jquery.fancybox.min.css
4282
780
https://static.hugedomains.com/css/hdv3-css/reboot.min.css
2178
780
https://static.hugedomains.com/css/hdv3-css/style.css?aa=2021-06-09a
27938
600
https://static.hugedomains.com/css/hdv3-css/responsive.css?aa=2021-06-09a
13381
150
https://fonts.googleapis.com/css?family=Noto+Sans:400,700&display=swap
1496
780
https://use.typekit.net/zyw6mds.css
993
780
Reduce unused JavaScript — Potential savings of 461 KiB
It is advised to remove unused JavaScript in order to reduce bytes consumed by network activity.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://www.youtube.com/s/player/4eb6b35d/player_ias.vflset/en_US/base.js
593291
426010
https://www.youtube.com/s/player/4eb6b35d/www-embed-player.vflset/www-embed-player.js
99836
45974
Reduce JavaScript execution time — 11.6 s
JavaScript (JS) execution time can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
URL Total CPU Time (Ms) Script Evaluation (Ms) Script Parse (Ms)
https://www.youtube.com/s/player/4eb6b35d/www-embed-player.vflset/www-embed-player.js
3781.188
3639.328
46.436
https://www.youtube.com/s/player/4eb6b35d/player_ias.vflset/en_US/base.js
3320.588
2834.62
435.308
https://www.hugedomains.com/cdn-cgi/challenge-platform/h/b/scripts/alpha/invisible.js?ts=1669694400
2930.624
2867.136
7.556
Unattributable
2145.024
9.992
0
https://www.hugedomains.com/domain_profile.cfm?d=serial4u.com
1270.092
558.716
20.804
https://www.youtube.com/embed/bqLUp7GuUTg?rel=0&autoplay=0&showinfo=0&controls=0
721.468
368.424
19.228
https://www.google-analytics.com/analytics.js
648
363.54
4.388
https://static.hugedomains.com/js/hdv3-js/jquery.min.js
358.628
333.04
7.064
https://www.googletagmanager.com/gtag/js?id=UA-7117339-4
116.564
101.32
12.932
https://www.youtube.com/s/player/4eb6b35d/www-player.css
55.292
0
0
Minimize main-thread work — 15.5 s
Main-thread work timing can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
Category Time Spent (Ms)
Script Evaluation
11162.164
Other
2841.836
Script Parsing & Compilation
571.36
Rendering
333.944
Style & Layout
300.232
Parse HTML & CSS
186.076
Garbage Collection
112.676
Ensure text remains visible during webfont load
Make use of the font-display CSS feature, which will ensure text is user-visible while webfonts are loading.
URL Potential Savings (Ms)
https://use.typekit.net/af/a91117/00000000000000003b9b257c/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n5&v=3
99.717000004603
https://fonts.gstatic.com/s/roboto/v18/KFOmCnqEu92Fr1Mu4mxKKTU1Kg.woff2
3.5090000019409
https://fonts.gstatic.com/s/roboto/v18/KFOlCnqEu92Fr1MmEU9fBBc4AMP6lQ.woff2
68.486999996821
Reduce the impact of third-party code — Third-party code blocked the main thread for 7,120 ms
It is advised to either limit, remove or delay the loading of redundant third-party code which may be significantly impacting load performance.
Third-Party Transfer Size (Bytes) Main-Thread Blocking Time (Ms)
SHOW DETAILS
785469
6585.976
SHOW DETAILS
24423
524.644
SHOW DETAILS
44464
11.508
SHOW DETAILS
38665
0
SHOW DETAILS
21255
0
SHOW DETAILS
15948
0
SHOW DETAILS
4282
0
SHOW DETAILS
3462
0
Some third-party resources can be lazy loaded with a facade — 1 facade alternative available
Consider replacing third-party embeds with a facade until they are required (use lazy loading).
Product Transfer Size (Bytes) Main-Thread Blocking Time (Ms)
YouTube Embedded Player (Video)
785469
6585.976
Does not use passive listeners to improve scrolling performance
Improve the page's scroll performance by marking touch and wheel event listeners as 'passive'.
Source
SHOW DETAILS
Image elements do not have explicit `width` and `height`
Reduce layout shifts and improve CLS by setting explicit width and height properties on image elements.
URL
https://static.hugedomains.com/images/hdv3-img/hugedomains_logo.svg
https://static.hugedomains.com/images/hdv3-img/footer-logo-3.png
https://static.hugedomains.com/images/hdv3-img/footer-logo-5.png
https://static.hugedomains.com/images/hdv3-img/footer-logo-2.png
https://static.hugedomains.com/images/hdv3-img/footer-logo-4.png
https://static.hugedomains.com/images/hdv3-img/footer-logo-1.png
https://static.hugedomains.com/images/hdv3-img/roket-side-ico.png
https://static.hugedomains.com/images/hdv3-img/zero-side-ico.png
https://static.hugedomains.com/images/hdv3-img/safesmallico.png
https://static.hugedomains.com/images/hdv3-img/mail-icon.png
https://static.hugedomains.com/images/hdv3-img/phone-icon.png
First Contentful Paint (3G) — 6390 ms
The time taken for the first image or text on the page to be rendered while on a 3G network.
93

Accessibility

Indicates how accessible the page is and highlights opportunities where the page can be made more accessible to users of serial4u.com. This includes details about various page attributes that can be optimized.

Navigation

`[accesskey]` values are unique
Access keys assist users with focusing on different parts of the page. Each access key should be unique for proper navigation.
The page contains a heading, skip link, or landmark region
It is advised to provide ways to bypass repetitive content, allowing users to navigate the page efficiently.
`[id]` attributes on active, focusable elements are unique
Ensure all focusable elements have a unique id value to allow them to be visible to users of assistive technologies, like a screen reader.
No element has a `[tabindex]` value greater than 0
Although technically valid, a tabindex value greater than 0 often creates frustrating experiences for users who rely on assistive technologies.

ARIA

`[aria-*]` attributes match their roles
Avoid mismatching 'aria-*' attributes and their 'role' value, as it invalidates the attribute.
`button`, `link`, and `menuitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[aria-hidden="true"]` is not present on the document `<body>`
If aria-hidden=true is set on the document body, assistive technologies, like a screen reader will work inconsistently.
`[aria-hidden="true"]` elements do not contain focusable descendents
Interactive elements within an aria-hidden=true element are unavailable to users of assistive technologies, like a screen reader.
ARIA input fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when an input field does not have an accessible name specified.
ARIA `meter` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
ARIA `progressbar` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[role]`s have all required `[aria-*]` attributes
Some ARIA roles have required 'aria-*' attributes, which provide essential information about state and functionality.
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
Some ARIA parent roles cannot perform their intended functions if specific child roles are not used.
`[role]`s are contained by their required parent element
Some ARIA child roles cannot perform their intended functions if specific parent roles are not used.
`[role]` values are valid
All ARIA roles require valid values to perform their intended functions.
ARIA toggle fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when a toggle field does not have an accessible name specified.
ARIA `tooltip` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
ARIA `treeitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[aria-*]` attributes have valid values
ARIA attributes cannot be interpreted with invalid values when used by screen readers and other assistive technologies.
`[aria-*]` attributes are valid and not misspelled
ARIA attributes cannot be interpreted with invalid names when used by screen readers and other assistive technologies.
ARIA IDs are unique
Ensure all ARIA ID values are unique to prevent elements from being overlooked by assistive technologies, like a screen reader.

Names and labels

Buttons have an accessible name
Buttons become unusable as they are announced simply as "button" when the button does not have an accessible name, when used by screen readers and other assistive technologies.
Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
No form fields have multiple labels
Having multiple labels for form fields can be confusing to assistive technologies, like a screen reader.
Image elements have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
`<input type="image">` elements have `[alt]` text
Input buttons with alternative text assist screen readers and other assistive technology users to understand its purpose.
Form elements have associated labels
Screen readers and other assistive technologies rely on labels to properly announce form controls.
`<object>` elements have alternate text
It is advised that alt text is used on '<object>' elements in order to provide meaning to screen reader and other assistive technology users, as these technologies are unable to translate non-text content.

Tables and lists

`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Screen readers and other assistive technologies may produce poor and inaccurate output when definition lists are not properly marked up.
Definition list items are wrapped in `<dl>` elements
In order for screen readers and other assistive technologies to properly announce definition list items ('<dt>' and '<dd>'), they must be wrapped in parent a '<dl>' element.
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
Use proper list structure to aid screen readers and other assistive technologies.
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
In order for screen readers to announce list items, ensure that list items ('<li>') are contained within parent '<ul>' or '<ol>' tags.
Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that '<td>' cells using the headers attribute only refer to other cells in the same table, to improve screen reader user experience.
`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that table headers refer to some set of cells, to improve screen reader user experience.

Internationalization and localization

`<html>` element has a `[lang]` attribute
It is advised to provide a lang attribute so that screen readers and other assistive technologies are guaranteed to announce the page's text correctly. When not provided, the user's default language setting will be used which may cause inaccuracies.
`<html>` element has a valid value for its `[lang]` attribute
Specify a valid BCP 47 language in order to help screen readers and other assistive technologies announce text properly.
`[lang]` attributes have a valid value
Specify a valid BCP 47 language on elements in order to help screen readers and other assistive technologies announce text properly.

Best practices

The document does not use `<meta http-equiv="refresh">`
Pages that refresh automatically cause a poor user experience as focus is directed back to the top of the page unexpectedly.
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
For users with low vision who rely on screen magnification, ensure that zooming is not disabled.

Audio and video

`<video>` elements contain a `<track>` element with `[kind="captions"]`
Serial4u.com may provide assistance to deaf or hearing-impaired users with captions on videos.

Contrast

Background and foreground colors do not have a sufficient contrast ratio.
Many (if not most) users find low-contrast text difficult or impossible to read.
Failing Elements
$1,595
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1‑303‑893‑0552
- Jose Delacruz, July 19, 2022
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- Kajsa Fredriksson, July 13, 2022
- Christopher Vanderhorst, July 11, 2022
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How do I get the domain after the purchase?
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Serial
4u

Names and labels

`<frame>` or `<iframe>` elements do not have a title
Screen reader users and other assistive technology users rely on frame titles to describe the contents of frames.
Failing Elements
div.testimonails-wrap > div.single-product-block > div.video-block > iframe
Links do not have a discernible name
In order to improve the navigation for screen reader and other assistive technology users, use link text that is unique, focusable and discernible.

Navigation

Heading elements are not in a sequentially-descending order
Properly order all headers and do not skip heading levels to better the navigation and readability for users of assistive technologies, like a screen reader.
Failing Elements
Shop

Manual Checks

The page has a logical tab order
The visual layout should be logical in its tab order and users cannot focus elements that are offscreen.
Interactive controls are keyboard focusable
Ensure that custom interactive controls are keyboard focusable and that a focus indicator is displayed.
Interactive elements indicate their purpose and state
Ensure that interactive elements (such as links and buttons) are distinguishable from non-interactive elements and that they indicate their state.
The user's focus is directed to new content added to the page
When new content (such as a dialogue) is added to the page, the user's focus should be directed to it.
User focus is not accidentally trapped in a region
Avoid focus being accidentally trapped when a user tabs in and out of controls or regions on page.
Custom controls have associated labels
Ensure that custom interactive controls have associated labels, which are provided by aria-label and aria-labelledby attributes.
Custom controls have ARIA roles
Ensure that all custom interactive controls have appropriate ARIA roles.
Visual order on the page follows DOM order
Ensure that the DOM order matches with the page's visual order, in order to improve navigation for screen readers and other assistive technologies.
Offscreen content is hidden from assistive technology
Ensure that offscreen content is hidden through the use of "display:none" styling or the aria-hidden attribute.
HTML5 landmark elements are used to improve navigation
Elements such as <main> and <nav> are recommended as they are used by screen readers and other assistive technologies to improve keyboard navigation.
58

Best Practices

Indicates the recommended, best practices currently in place on the page and highlights the best practices that serial4u.com should incorporate. This includes practices such as protecting pages with HTTPS.

Audits

Avoids requesting the geolocation permission on page load
When requesting a user's location, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Avoids requesting the notification permission on page load
When requesting permission to send notifications, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Ensure CSP is effective against XSS attacks
Significantly reduce the risk of cross-site scripting attacks (XSS) by ensuring you have a strong Content Security Policy (CSP).
Description Directive Severity
No CSP found in enforcement mode
High

Audits

Allows users to paste into password fields
Ensure that password inputs may be pasted into to aid in the user's ability to use password managers and improve security.
Displays images with correct aspect ratio
Ensure that image display dimensions match their natural aspect ratio.
Fonts with `font-display: optional` are preloaded
It is recommended that optional fonts are preloaded.

Audits

Page has the HTML doctype
Ensure a doctype is specified to prevent the browser from switching to quirks-mode.
Properly defines charset
It is advised to declare a character encoding, optionally via a <meta> tag in the first 1024 bytes of the HTML or in the Content-Type HTTP response header.

Audits

Detected JavaScript libraries
Below is a list of all front-end JavaScript libraries that were detected on the page.
Name Version
jQuery
3.2.1
No browser errors logged to the console
Below is a list of all errors logged to the console, which indicate unresolved problems on the site.
Page has valid source maps
Consider deploying source maps for added benefits such as the ability to debug while in production.
URL Map URL
https://www.google.com/js/th/YkfklCtf3s5-_1quWHAnTHHVaBZ-i7ToAeXFpu3i2Ro.js

Audits

Does not use HTTPS — 1 insecure request found
Ensure that all pages are protected with HTTPS (including those that do not handle sensitive data) as HTTPS prevents tampering and passive listening on communications between the app and its users. Additionally, HTTPS is a prerequisite for HTTP/2 and many new web platform APIs.
Insecure URL Request Resolution
http://serial4u.com/
Allowed
Includes front-end JavaScript libraries with known security vulnerabilities — 3 vulnerabilities detected
Ensure that the use of third-party scripts is minimal and that only trusted third-party scripts are used as some may contain known security vulnerabilities which may be exploited by attackers.
Library Version Vulnerability Count Highest Severity
SHOW DETAILS
3
Medium

Audits

Serves images with low resolution
For maximum image clarity, ensure images have natural dimensions and are proportional to the display size and pixel ratio.
URL Displayed size Actual size Expected size
https://static.hugedomains.com/images/hdv3-img/mail-icon.png
38 x 26
38 x 26
76 x 52
https://static.hugedomains.com/images/hdv3-img/phone-icon.png
22 x 22
22 x 22
44 x 44

Audits

Uses deprecated APIs — 2 warnings found
Avoid deprecated APIs which will eventually be removed the browser.
Deprecation / Warning Source
`window.webkitStorageInfo` is deprecated. Please use `navigator.webkitTemporaryStorage` or `navigator.webkitPersistentStorage` instead.
SHOW DETAILS
...
SHOW DETAILS
Issues were logged in the `Issues` panel in Chrome Devtools
There may be unresolved issues logged to Chrome Devtools.
Issue type
Cookie
93

SEO

Indicates how well the page is optimized for ranking in search engines and highlights Search Engine Optimization (SEO) opportunities for serial4u.com. This includes optimizations such as providing meta data.

Mobile Friendly

Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of serial4u.com on mobile screens.
Document uses legible font sizes — 100% legible text
Font sizes of 12px or less are too small to most mobile users without user gestures and further action. Aim for more than 60% of page text to use font sizes greater than 12px.
Source Selector % of Page Text Font Size
SHOW DETAILS
100.00%
≥ 12px
Tap targets are sized appropriately — 100% appropriately sized tap targets
Interactive elements (such as buttons and links) should be appropriately spaced, sized and easy enough to select or tap with regard to their surrounding elements.

Content Best Practices

Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
Document has a meta description
Meta descriptions may be used by search engines when displaying a link to the page and should concisely summarize the page's content.
Image elements have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
Document has a valid `hreflang`
Search engines can be instructed to list specific versions of a page for a given language or region through the use of hreflang links.
Document has a valid `rel=canonical`
Search engines can be suggested which URL should be shown in search results through the use of canonical links.
Document avoids plugins
The content of plugins cannot be indexed by search engines and many devices either restrict or do not support them.

Crawling and Indexing

Page has successful HTTP status code
Avoid pages with unsuccessful HTTP status codes as they may not be indexed by search engines.
Links are crawlable
Ensure that the 'href' attribute of anchor elements links to the appropriate destination. This allows for more pages of the site to be discovered by search engines.
Page isn’t blocked from indexing
Pages that cannot be crawled by search engines cannot be indexed or included in their search results. Ensure that search engines have permission to crawl all pages that should be indexed.
robots.txt is valid
Malformed robots.txt files prevent crawlers from understanding how a site wants to be crawled or indexed, which can be devastating to SEO.

Content Best Practices

Links do not have descriptive text — 1 link found
Make use of descriptive link text to assist search engines in understanding the content.

Manual Checks

Structured data is valid
Structured data can be validated through the use of the Structured Data Testing Tool and the Structured Data Linter.
30

PWA

Indicates how valid the aspects of a Progressive Web App (PWA) are for the page and highlights opportunities to enable/improve the PWA of serial4u.com. This includes details about web app manifests.

PWA Optimized

Content is sized correctly for the viewport
Ensure that the width of the app's content matches the width of the viewport, otherwise the app might not be optimized for mobile screens.
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of serial4u.com on mobile screens.

Installable

Web app manifest or service worker do not meet the installability requirements — 1 reason
User engagement may be increased by leveraging the browsers ability to proactively prompt users to add the app to their homescreen.
Failure reason
No manifest was fetched

PWA Optimized

Does not register a service worker that controls page and `start_url`
A service worker is used to provide Progressive Web Apps the use of features such as working offline, the ability for the app to be added to the homescreen as well as push notifications.
Is not configured for a custom splash screen
Themed splash screens ensure a high-quality user experience at launch for app users.
View Data
Does not set a theme color for the address bar.
A theme may be applied to the browser address bar, which ideally can be made to match the site.
View Data
Does not provide a valid `apple-touch-icon`
iOS users of Progressive Web Apps will benefit from an apple touch icon, which can be defined with 'apple-touch-icon', which must point to a non-transparent 192px (or 180px) square PNG.
Manifest doesn't have a maskable icon
Maskable icons are great to ensure that images fill the entire shape when installing the app on a device.

Manual Checks

Site works cross-browser
Ensure that the Progressive Web App works correctly across every major browser.
Page transitions don't feel like they block on the network
Users perceive apps with responsive, snappy transitions as higher peforming and ensures a great user experience, even on a slow network.
Each page has a URL
Ensure that all pages are deep linkable via URL. They should also be unique for the purpose of shareability on social media.
Hosting

Server Location

Server IP Address: 3.19.116.195
Continent: North America
Country: United States
United States Flag
Region: Ohio
City: Columbus
Longitude: -83.0235
Latitude: 39.9653
Currencies: USD
USN
USS
Languages: English

Web Hosting Provider

Name IP Address
Amazon Technologies Inc.
Registration

Domain Registrant

Private Registration: No
Name: Domain Admin / This Domain is For Sale
Organization: HugeDomains.com
Country: US
City: Denver
State: CO
Post Code: 80205
Email: domains@hugedomains.com
Phone: +1.3038930552
Note: Registration information is derived from various sources and may be inaccurate.

Domain Registrar

Security

Visitor Safety

Mature Content: Not Likely
McAfee WebAdvisor Rating: Safe
WOT Rating:
WOT Trustworthiness:
WOT Child Safety:
Note: Safety information is not guaranteed.

SSL/TLS Certificate

Issued To: sni.cloudflaressl.com
Issued By: Cloudflare Inc ECC CA-3
Valid From: 17th June, 2021
Valid To: 16th June, 2022
Subject: CN = sni.cloudflaressl.com
O = Cloudflare, Inc.
L = San Francisco
S = US
Hash: c959965e
Issuer: CN = Cloudflare Inc ECC CA-3
O = Cloudflare, Inc.
S = US
Version: 2
Serial Number: 2787151340683322791925946393542536021
Serial Number (Hex): 0218C92BAC706C5B777C393D72642B55
Valid From: 17th June, 2024
Valid To: 16th June, 2024
Signature Algorithm (Short Name): ecdsa-with-SHA256
Signature Algorithm (Long Name): ecdsa-with-SHA256
Authority Key Identifier: keyid:A5:CE:37:EA:EB:B0:75:0E:94:67:88:B4:45:FA:D9:24:10:87:96:1F
Extended Key Usage: TLS Web Server Authentication, TLS Web Client Authentication
CRL Distribution Points:
Full Name:
URI:http://crl3.digicert.com/CloudflareIncECCCA-3.crl

Full Name:
URI:http://crl4.digicert.com/CloudflareIncECCCA-3.crl
Certificate Policies: Policy: 2.23.140.1.2.2
CPS: http://www.digicert.com/CPS
Authority Information Access: OCSP - URI:http://ocsp.digicert.com
CA Issuers - URI:http://cacerts.digicert.com/CloudflareIncECCCA-3.crt
SCT List: Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : 46:A5:55:EB:75:FA:91:20:30:B5:A2:89:69:F4:F3:7D:
11:2C:41:74:BE:FD:49:B8:85:AB:F2:FC:70:FE:6D:47
Timestamp : Jun 17 18:07:22.404 2021 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:45:02:21:00:CC:58:21:82:B9:90:13:56:FE:90:EE:
E3:25:44:8B:3E:14:B1:02:6F:F6:7A:2D:5B:5F:EC:A5:
49:D7:99:42:48:02:20:1B:EA:6A:01:B1:6B:31:B5:2B:
71:70:73:B9:7C:D6:A3:EE:19:76:57:82:C4:D8:AD:99:
7F:40:58:7B:01:F5:6E
Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : 22:45:45:07:59:55:24:56:96:3F:A1:2F:F1:F7:6D:86:
E0:23:26:63:AD:C0:4B:7F:5D:C6:83:5C:6E:E2:0F:02
Timestamp : Jun 17 18:07:22.389 2021 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:45:02:21:00:A7:93:0D:87:8B:C6:41:6D:35:C0:69:
92:71:9E:CB:28:EE:B7:A2:92:C2:D6:B4:9E:A2:D3:05:
8B:B1:B9:38:86:02:20:35:4C:8A:10:EE:E8:A8:3B:73:
E1:C9:F2:73:74:07:99:B5:50:A5:A5:38:72:A8:FA:C9:
2E:EB:4A:41:42:AD:32
Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : 51:A3:B0:F5:FD:01:79:9C:56:6D:B8:37:78:8F:0C:A4:
7A:CC:1B:27:CB:F7:9E:88:42:9A:0D:FE:D4:8B:05:E5
Timestamp : Jun 17 18:07:22.457 2021 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:45:02:21:00:AD:F1:FF:02:48:40:63:9A:84:94:03:
70:BE:08:FA:01:4C:C6:A5:93:EA:6D:86:F5:FB:7F:E4:
BF:7B:4B:08:25:02:20:04:52:0A:E5:24:09:C3:B0:79:
CF:9A:00:2B:BE:F2:8E:91:E9:DD:DE:E4:F3:43:92:C1:
28:26:4A:42:30:2C:0B
Key Usage: Digital Signature
Basic Constraints: CA:FALSE
Subject Alternative Name: DNS:*.hugedomains.com
DNS:sni.cloudflaressl.com
DNS:hugedomains.com
Technical

DNS Lookup

HTTP Response Headers

HTTP-Code: HTTP/1.0 404 Not Found
cache-control: no-cache
content-type: text/html
x-reason: UnsupportedMethod

Whois Lookup

Created: 6th July, 2017
Changed: 7th July, 2021
Expires: 6th July, 2024
Registrar: TurnCommerce, Inc. DBA NameBright.com
Status: clientTransferProhibited
Nameservers: nsg1.namebrightdns.com
nsg2.namebrightdns.com
Owner Name: Domain Admin / This Domain is For Sale
Owner Organization: HugeDomains.com
Owner Street: 2635 Walnut Street
Owner Post Code: 80205
Owner City: Denver
Owner State: CO
Owner Country: US
Owner Phone: +1.3038930552
Owner Email: domains@hugedomains.com
Admin Name: Domain Admin / This Domain is For Sale
Admin Organization: HugeDomains.com
Admin Street: 2635 Walnut Street
Admin Post Code: 80205
Admin City: Denver
Admin State: CO
Admin Country: US
Admin Phone: +1.3038930552
Admin Email: domains@hugedomains.com
Tech Name: Domain Admin / This Domain is For Sale
Tech Organization: HugeDomains.com
Tech Street: 2635 Walnut Street
Tech Post Code: 80205
Tech City: Denver
Tech State: CO
Tech Country: US
Tech Phone: +1.3038930552
Tech Email: domains@hugedomains.com
Full Whois: Domain Name: Serial4u.com
Registry Domain ID: 2140485679_DOMAIN_COM-VRSN
Registrar WHOIS server: whois.NameBright.com
Registrar URL: http://www.NameBright.com
Updated Date: 2021-07-07T00:00:00.000Z
Creation Date: 2017-07-06T18:10:28.000Z
Registrar Registration Expiration Date: 2024-07-06T00:00:00.000Z
Registrar: TurnCommerce, Inc. DBA NameBright.com
Registrar IANA ID: 1441
Registrar Abuse Contact Email: abuse@NameBright.com
Registrar Abuse Contact Phone: +1.7204960020
Domain Status: clientTransferProhibited https://www.icann.org/epp#clientTransferProhibited
Registry Registrant ID: Not Available From Registry
Registrant Name: Domain Admin / This Domain is For Sale
Registrant Organization: HugeDomains.com
Registrant Street: 2635 Walnut Street
Registrant City: Denver
Registrant State/Province: CO
Registrant Postal Code: 80205
Registrant Country: US
Registrant Phone: +1.3038930552
Registrant Phone Ext:
Registrant Fax:
Registrant Fax Ext:
Registrant Email: domains@hugedomains.com
Registry Admin ID: Not Available From Registry
Admin Name: Domain Admin / This Domain is For Sale
Admin Organization: HugeDomains.com
Admin Street: 2635 Walnut Street
Admin City: Denver
Admin State/Province: CO
Admin Postal Code: 80205
Admin Country: US
Admin Phone: +1.3038930552
Admin Phone Ext:
Admin Fax:
Admin Fax Ext:
Admin Email: domains@hugedomains.com
Registry Tech ID: Not Available From Registry
Tech Name: Domain Admin / This Domain is For Sale
Tech Organization: HugeDomains.com
Tech Street: 2635 Walnut Street
Tech City: Denver
Tech State/Province: CO
Tech Postal Code: 80205
Tech Country: US
Tech Phone: +1.3038930552
Tech Phone Ext:
Tech Fax:
Tech Fax Ext:
Tech Email: domains@hugedomains.com
Name Server: nsg1.namebrightdns.com
Name Server: nsg2.namebrightdns.com
DNSSEC: unsigned
URL of the ICANN WHOIS Data Problem Reporting System:
http://wdprs.internic.net
>>> Last update of WHOIS database: 2022-11-17T10:40:45.082Z <<<

For more information on Whois status codes, please visit https://icann.org/epp
View Raw Whois

Nameservers

Name IP Address
nsg1.namebrightdns.com 34.229.221.27
nsg2.namebrightdns.com 18.215.230.85
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