The following diagnostics did not complete: pagespeed.
The SSL certificate is due to expire on 21 Sep 2026.
Screenshot captured after 24.66 s.
- YouTube
See the website health and performance test results for https://www.youtube.com/shorts/iI7kyVaNudI, including status code, load speed, SSL, WHOIS, DNS, console logs, Chrome UX Report, resource sizes, and Pagespeed findings.
Tested on 21 Jul 2026 17:47:28.
- HTTP status 200
- Response time 1.19 s
- Document load time 24.49 s
- Full page load time 24.66 s
- Document size 1.51 MB
- Full page size 3.3 MB
- Current score N/A
Observer's Performance Suggestions
Priority actions Observer identified from this test to improve speed, reliability, and user experience.
|
Real-user Largest Contentful Paint is poor
Warning
High
75th-percentile users see 4872 ms, above the 4000 ms threshold for a good experience. Read more |
|
Real-user Cumulative Layout Shift is poor
Warning
High
75th-percentile users see 0.320, above the 0.250 threshold for a good experience. Read more |
|
LCP image resource load is slow
Warning
High
The p75 LCP image resource load delay is 4213 ms. Optimize image delivery with a CDN, caching, or smaller formats to reduce load time. Read more |
|
2 slow third-party resources
Warning
High
2 third-party resources took longer than 1 second to load. Slowest: https://accounts.google.com/ServiceLogin?service=youtube&uilel=3&passive=true&continue=https%3A%2F%2Fwww.youtube.com%2Fsignin%3Faction_handle_signin%3Dtrue%26app%3Ddesktop%26hl%3Den%26next%3D%252Fsignin_passive%26feature%3Dpassive&hl=en at 10502 ms. Consider self-hosting critical assets or lazy-loading non-essential ones. Read more |
|
HTML document is 1545 KB
Warning
High
The HTML response exceeds 1 MB. Reduce inline scripts/styles, remove unused markup, and consider server-side pagination or lazy loading. Read more |
|
Missing viewport meta tag
Warning
High
Without a <meta name="viewport"> tag, mobile browsers render the page at desktop width and scale it down. Add a viewport meta tag to ensure proper responsive behavior. Read more |
|
Slow server response (1185 ms)
Warning
Medium
Server took 1.185 seconds to respond. Investigate backend latency or upstream timeouts. Read more |
|
Fewer than 75% of users have a good Interaction to Next Paint
Warning
Medium
Only 71% of real-user samples fall in the "good" bucket for Interaction to Next Paint. Read more |
|
Fewer than 75% of users have a good First Contentful Paint
Warning
Medium
Only 39% of real-user samples fall in the "good" bucket for First Contentful Paint. Read more |
|
Slow full page load (24665 ms)
Warning
Medium
Browser took longer than 5 seconds to reach DOM complete. Audit blocking resources and backend latency. Read more |
Only the top 10 of 17 suggestions are shown in the public test. To see all recommendations and track every change on your website, register now.
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163 days left
16 days left
Whois
- Registrar
- MarkMonitor, Inc.
- Created
- 15 Feb 2005
- Updated
- 14 Jan 2026
- Expires
- 15 Feb 2027
- Country
- US
- DNSSEC
- unsigned
SSL
- SSL available
- Yes
- SSL status
- valid
- Issuer
- C=US,O=Google Trust Services,CN=WE2
- Subject
- CN=*.google.com
- TLS version
- TLSv1.3
- Self-signed
- No
- Valid until
- 21 Sep 2026
DNS Records
Current DNS records returned for this domain at the time of the test.
- DNS status
- resolved
- 142.251.150.4
- 142.251.151.4
- 142.251.152.4
- 142.251.153.4
- 142.251.154.4
- 142.251.155.4
- 142.251.156.4
- 142.251.157.4
- 2001:4860:4826:400::
- 2001:4860:4827:400::
- 2001:4860:4828:400::
- 2001:4860:4829:400::
- 2001:4860:482a:400::
- 2001:4860:482b:400::
- 2001:4860:482c:400::
- 2001:4860:482d:400::
No records returned.
- smtp.google.com
- ns1.google.com
- ns2.google.com
- ns3.google.com
- ns4.google.com
- facebook-domain-verification=64jdes7le4h7e7lfpi22rijygx58j1
- google-site-verification=QtQWEwHWM8tHiJ4s-jJWzEQrD_fF3luPnpzNDH-Nw-w
- v=spf1 include:google.com mx -all
Browser Console Logs
Messages captured from the browser console during the real page test.
LegacyDataMixin will be applied to all legacy elements.
Set `_legacyUndefinedCheck: true` on element class to enable.
Failed to load resource: net::ERR_NAME_NOT_RESOLVED
Failed to load resource: net::ERR_NAME_NOT_RESOLVED
Failed to load resource: net::ERR_NAME_NOT_RESOLVED
Failed to load resource: net::ERR_NAME_NOT_RESOLVED
Failed to load resource: net::ERR_NAME_NOT_RESOLVED
Failed to load resource: net::ERR_NAME_NOT_RESOLVED
The resource https://rr3---sn-q5u5oxufvg3nn3-cunl.googlevideo.com/generate_204 was preloaded using link preload but not used within a few seconds from the window's load event. Please make sure it has an appropriate `as` value and it is preloaded intentionally.
The resource https://rr3---sn-nv47lnsy.c.youtube.com/generate_204 was preloaded using link preload but not used within a few seconds from the window's load event. Please make sure it has an appropriate `as` value and it is preloaded intentionally.
The resource https://i.ytimg.com/generate_204 was preloaded using link preload but not used within a few seconds from the window's load event. Please make sure it has an appropriate `as` value and it is preloaded intentionally.
Chrome UX Report
Real-user experience shares from recent Chrome visits to this website.
Origin: https://www.youtube.com
| Metric | User experience share | 75th percentile |
|---|---|---|
| LCP |
Good 30.1%
Needs improvement 35.6%
Poor 34.4%
|
4.87 s |
| INP |
Good 70.9%
Needs improvement 18.8%
Poor 10.3%
|
233 ms |
| CLS |
Good 51.0%
Needs improvement 19.5%
Poor 29.5%
|
0.32 |
| FCP |
Good 39.1%
Needs improvement 38.7%
Poor 22.2%
|
2.87 s |
| TTFB |
Good 83.9%
Needs improvement 9.5%
Poor 6.6%
|
549 ms |
Resources by Transfer Size
Largest transferred resources captured during the browser test, sorted from heaviest to lightest.
| Resource | Type | Status | Duration | Transfer size | Decoded size | Blocking |
|---|---|---|---|---|---|---|
| link | 200 | 1.22 s | 2.01 MB | 10.17 MB | non-blocking | |
|
www.youtube.com
|
script | 200 | 474 ms | 670.18 KB | 2.43 MB | blocking |
| link | 200 | 297 ms | 276.29 KB | 2.7 MB | blocking | |
|
www.youtube.com
|
link | 200 | 183 ms | 56.29 KB | 513.06 KB | blocking |
|
i.ytimg.com
|
css | 0 | 183 ms | 39.05 KB | 38.76 KB | non-blocking |
|
i.ytimg.com
|
css | 0 | 117 ms | 30.87 KB | 30.57 KB | non-blocking |
|
i.ytimg.com
|
css | 0 | 115 ms | 26.91 KB | 26.62 KB | non-blocking |
|
i.ytimg.com
|
css | 0 | 110 ms | 24.29 KB | 23.99 KB | non-blocking |
|
i.ytimg.com
|
css | 0 | 100 ms | 22.71 KB | 22.41 KB | non-blocking |
|
i.ytimg.com
|
css | 0 | 276 ms | 21.75 KB | 21.46 KB | non-blocking |
| script | 200 | 206 ms | 21.18 KB | 76.83 KB | blocking | |
|
i.ytimg.com
|
css | 0 | 108 ms | 19.59 KB | 19.3 KB | non-blocking |
| link | 0 | 480 ms | 15.12 KB | 84.12 KB | blocking | |
| script | 200 | 199 ms | 14.04 KB | 49.67 KB | blocking | |
|
i.ytimg.com
|
css | 0 | 102 ms | 12.25 KB | 11.95 KB | non-blocking |
|
www.youtube.com
|
script | 200 | 383 ms | 12.11 KB | 37.24 KB | blocking |
|
i.ytimg.com
|
css | 0 | 112 ms | 7.59 KB | 7.29 KB | non-blocking |
|
www.youtube.com
|
audio | 206 | 104 ms | 7.08 KB | 6.79 KB | non-blocking |
|
www.youtube.com
|
audio | 206 | 101 ms | 6.77 KB | 6.48 KB | non-blocking |
|
www.youtube.com
|
audio | 206 | 110 ms | 6.67 KB | 6.38 KB | non-blocking |
|
www.youtube.com
|
audio | 206 | 103 ms | 6.32 KB | 6.02 KB | non-blocking |
|
www.youtube.com
|
script | 200 | 384 ms | 5.14 KB | 13.81 KB | blocking |
|
www.youtube.com
|
script | 200 | 183 ms | 3.42 KB | 8.87 KB | blocking |
|
www.youtube.com
|
fetch | 200 | 114 ms | 3.14 KB | 12.21 KB | non-blocking |
| script | 200 | 197 ms | 2.19 KB | 5.43 KB | blocking | |
|
fonts.googleapis.com
|
link | 0 | 96 ms | 2 KB | 21.14 KB | non-blocking |
| script | 200 | 201 ms | 1.78 KB | 5.67 KB | blocking | |
| link | 200 | 91 ms | 1.64 KB | 8.34 KB | non-blocking | |
| script | 200 | 200 ms | 1021 B | 2 KB | blocking | |
|
www.youtube.com
|
other | 200 | 4 ms | 986 B | 13.62 KB | non-blocking |
|
fonts.googleapis.com
|
link | 0 | 96 ms | 905 B | 2.14 KB | non-blocking |
|
www.youtube.com
|
link | 200 | 109 ms | 889 B | 2.67 KB | blocking |
|
www.youtube.com
|
link | 200 | 184 ms | 565 B | 828 B | blocking |
|
googleads.g.doubleclick.net
|
xmlhttprequest | 200 | 2 s | 420 B | 100 B | non-blocking |
| img | 0 | 104 ms | 342 B | 42 B | non-blocking | |
| img | 0 | 304 ms | 342 B | 42 B | non-blocking | |
|
static.doubleclick.net
|
script | 0 | 798 ms | 329 B | 29 B | non-blocking |
|
rr3---sn-q5u5oxufvg3nn3-cunl.googlevideo.com
|
link | 204 | 277 ms | 300 B | 0 B | non-blocking |
|
rr3---sn-nv47lnsy.c.youtube.com
|
link | 204 | 173 ms | 300 B | 0 B | non-blocking |
|
www.youtube.com
|
img | 204 | 106 ms | 300 B | 0 B | non-blocking |
|
i.ytimg.com
|
link | 0 | 290 ms | 0 B | 0 B | non-blocking |
| iframe | 0 | 10.5 s | 0 B | 0 B | non-blocking | |
|
www.google.com
|
script | 0 | 104 ms | 0 B | 0 B | non-blocking |
| fetch | 0 | 292 ms | 0 B | 0 B | non-blocking | |
| fetch | 0 | 204 ms | 0 B | 0 B | non-blocking | |
| fetch | 0 | 113 ms | 0 B | 0 B | non-blocking | |
| fetch | 0 | 112 ms | 0 B | 0 B | non-blocking | |
| fetch | 0 | 96 ms | 0 B | 0 B | non-blocking | |
| fetch | 0 | 95 ms | 0 B | 0 B | non-blocking |
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