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Performance

· 27 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
77
GRADE
C
FIX
5
REVIEW
8
PASS
10
INFO
4

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

Mobile Desktop
42
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
59
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
77
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

5.34 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

6.05 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

916 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.080

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

5.34 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

11.96 s

Page Load Progression

375 ms
750 ms
1.1 s
1.5 s
1.9 s
2.2 s
2.6 s
3.0 s
Checks
27
10 PASS 8 REVIEW 5 FIX
D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (1.4 MiB of 1.4 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Execution Cost
Action
4261ms total JS execution
FIX
4261ms total JS execution
Warning::
https://www.xvideos.com/: 1238ms CPU time
Warning::
https://assets-cdn77.xvideos-cdn.com/v-d6b4df882a4...: 856ms CPU time
Warning::
https://assets-cdn77.xvideos-cdn.com/v3/js/skins/m...: 854ms CPU time
Warning::
https://assets-cdn77.xvideos-cdn.com/v-5c725e8e246...: 647ms CPU time
Warning::
Unattributable: 392ms CPU time
Warning::
Third-party scripts: 3869ms (91% of total)

Main Thread Breakdown

Script Evaluation 34% Other 29% Style & Layout 15% Script Parsing & Compilation 10% Parse HTML & CSS 8%
ScriptTotalScriptingParse/CompileParty
https://www.xvideos.com/1238ms89ms41ms3rd
https://assets-cdn77.xvideos-cdn.com/v-d6b4df882a4/v3/js/skins/min/default.js856ms427ms285ms3rd
https://assets-cdn77.xvideos-cdn.com/v3/js/skins/min/require.static.js854ms659ms2ms3rd
https://assets-cdn77.xvideos-cdn.com/v-5c725e8e246/v3/js/skins/min/default.header.static.js647ms238ms43ms3rd
Unattributable392ms7ms0ms1st
https://assets-cdn77.xvideos-cdn.com/v-701ef23b943/v3/css/default/main.css160ms0ms0ms3rd
https://assets-cdn77.xvideos-cdn.com/v3/js/libs/jquery.min.js112ms49ms13ms3rd
F
JS Bundles
Action
8 scripts, 594 KB unused
FIX
8 scripts, 594 KB unused
Warning::
https://assets-cdn77.xvideos-cdn.com/v-d6b4df882a4...: 413 KB unused (81%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://assets-cdn77.xvideos-cdn.com/v-d6b4df882a4...: 85 KB unused (88%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://assets-cdn77.xvideos-cdn.com/v-5c725e8e246...: 49 KB unused (56%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://a.pemsrv.com/ad-provider.js: 46 KB unused (92%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 594 KB
594 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://assets-cdn77.xvideos-cdn.com/v-d6b4df882a4/v3/js/skins/min/default.js510 KB413 KB (81%)✓3rd
https://assets-cdn77.xvideos-cdn.com/v-d6b4df882a4/v3/js/libs/hls-1.2.5.min.js98 KB85 KB (88%)✓3rd
https://assets-cdn77.xvideos-cdn.com/v-5c725e8e246/v3/js/skins/min/default.header.static.js88 KB49 KB (56%)✓3rd
https://a.pemsrv.com/ad-provider.js51 KB46 KB (92%)✓3rd
https://assets-cdn77.xvideos-cdn.com/v-240a4f69694/v3/js/skins/min/default.footer.static.js11 KB—✓3rd
https://assets-cdn77.xvideos-cdn.com/v3/js/libs/jquery.min.js34 KB—✓3rd
https://assets-cdn77.xvideos-cdn.com/v3/js/skins/min/require.static.js7 KB—✓3rd
https://assets-cdn77.xvideos-cdn.com/v-d6b4df882a4/v3/js/jquery.js1 KB—✓3rd

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

F
Page Weight Inventory
Action
30 resources · 1.4 MB · 594 KB savings available
FIX
30 resources · 1.4 MB · 594 KB savings available
Warning::
Page weight 1.4 MB exceeds 1 MB target by 456 KB
Got: 1.4 MB Expected: ≤ 1 MB
Info::
~594 KB of savings available
Warning::
29 third-party resources (100% of weight)
Info::
3 resources over 200KB
30 resources · 1.4 MiB · 29 third-party 455.8 KiB over 1MB target
JavaScript 54% · 798.5 KiB
CSS 30% · 438.3 KiB
Image 9% · 136.9 KiB
Other 3% · 43.3 KiB
Document 2% · 32.5 KiB
Font 2% · 30.3 KiB

~593.6 KiB of savings available

Remove unused JavaScript: 593.6 KiB
F
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

B
Page Weight Budget
1.4 MB transferred, 30 requests
REVIEW
1.4 MB transferred, 30 requests
Info::
Page weighs 7.1 MB (1.4 MB transferred)
Warning::
JavaScript is 798 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 798 KB
Info::
CSS is 219 KB — consider purging unused styles
Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.
Got: 219 KB
Info::
30 HTTP requests
Info::
Estimated 0.30 g CO2 per page load
1.4 MB / 2.4 MB budget
1.4 MB transferred
30 requests
0.30 g CO2 per page load
JavaScript 798.5 KiB 54%
Other 262.6 KiB 18%
CSS 218.6 KiB 15%
Images 129.2 KiB 9%
HTML 32.0 KiB 2%
Fonts 30.3 KiB 2%
Other 8.2 KiB 1%
Other 424 B 0%
0 2.4 MB 4.9 MB
Under budget

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Why this matters

JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.

Source: web.dev

Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.

Why this matters

CSS bundle is large — purge unused styles (PurgeCSS, Tailwind JIT) to reduce CSS payload.

Source: web.dev

C
Image Optimization
Action
11 images, 0 KB saveable
REVIEW
11 images, 0 KB saveable
Warning::
https://thumb-cdn77.xvideos-cdn.com/c5a53a71-1be7-... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://thumb-cdn77.xvideos-cdn.com/0a61a860-653b-... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets-cdn77.xvideos-cdn.com/img/lightbox/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://thumbs-gcore.xvideos-cdn.com/f924d1ba-848c... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://thumb-cdn77.xvideos-cdn.com/2c6b1fd9-2f4c-... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://thumb-cdn77.xvideos-cdn.com/474ca075-4c93-... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
11 images 129 KB
0 oversized -0 KB
10 legacy format
6 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

B
HTTP/3 (QUIC)
HTTP/3 not advertised
REVIEW
HTTP/3 not advertised
Info::
HTTP/3 (QUIC) is not advertised
HTTP/3 isn't advertised via Alt-Svc and the worker didn't negotiate h3. HTTP/3 reduces handshake latency (1-RTT instead of 2-3 RTTs) and is more resilient on lossy connections. Most modern CDNs (Cloudflare, Fastly, AWS CloudFront, Google Cloud CDN) support HTTP/3 with a single config switch -- consider enabling for mobile-heavy workloads.
C
Compression Algorithm
Action
Main response served uncompressed
REVIEW
Main response served uncompressed
Info::
Main HTML response has no Content-Encoding (uncompressed)
The main HTML document is served without compression. The Text Compression section above lists the broader picture; for the main response specifically, even gzip would shave ~70-80% off most text payloads.
B
Main HTML Cache-Control
No Cache-Control header on main HTML response
REVIEW
No Cache-Control header on main HTML response
Info::
Main HTML response has no Cache-Control header
Without an explicit Cache-Control, browsers fall back to heuristic caching (~10% of Last-Modified age). Set `Cache-Control: no-cache` or `max-age=300` for HTML to control freshness explicitly -- prevents stale auth state and SPA shell drift.
B
Server-Timing Observability
No Server-Timing header found
REVIEW
No Server-Timing header found
Info::
No Server-Timing header found
Server-Timing exposes backend timing breakdowns to browser DevTools (e.g., `db: 45ms; render: 120ms; cache: 2ms`). Useful for diagnosing slow pages without backend log access. Most modern frameworks (Next.js, Cloudflare Workers, Fastly) emit it automatically; absence on a managed platform usually means telemetry headers are stripped at the edge.
C
JavaScript Blocking
Action
3 JS blocking issue(s) detected
REVIEW
3 JS blocking issue(s) detected
Warning::
6 render-blocking <script src> tag(s) without async/defer
Each `<script src=...>` without `async`, `defer`, or `type="module"` blocks HTML parsing while the browser fetches and executes it. The block lasts the entire round-trip + execution time -- on slow networks this translates directly into LCP delay. Add `defer` (executes after parse, in source order) for scripts that interact with the DOM, or `async` (executes whenever ready) for analytics / independent scripts. Module scripts (`type="module"`) are deferred by default.
Warning::
Page uses document.write() -- disables Chrome's preload scanner
`document.write()` blocks all parallel resource discovery while it executes. Chrome explicitly disables the preload scanner on connections it judges slow when document.write is detected, serializing the entire subtree load. Almost always third-party ad / analytics legacy code; replacing with createElement + appendChild (or refusing to integrate the offending vendor) recovers significant load-time on mobile.
Warning::
Total JS execution time is 4.3 s -- over the 3.5s budget
Total JavaScript execution (parse + compile + run) across all scripts exceeds 3.5 seconds. On low-end devices that becomes 7-15+ seconds and shows up directly in TBT and INP. Reduce by: tree-shaking unused dependencies, code-splitting (dynamic `import()`), removing or deferring third-party tracking, and replacing heavy frameworks where they're not needed.
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+
Font Loading
1 fonts (30 KB)
PASS
1 fonts (30 KB)
Info::
1 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

1

30 KB total

Render-blocking

0

of 1

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s FCP 5.3 s LCP 6.0 shttps://assets-cdn77.xvideos-cdn.com/v-02511061135/v3/fonts/skins/common/iconfont/iconfont.woff2iconfont.woff2 https://assets-cdn77.xvideos-cdn.com/v-02511061135/v3/fonts/skins/common/iconfont/iconfont.woff2 — 30.3 KiB — 6 ms — font-display: swap
iconfont.woff2 woff2 swap
Size 30 KB
Load time 6 ms
Start 1.0 s
Risk FOUT — text flashes from fallback to web font
Optimization checklist
  • Preload critical fonts (priority=high)
  • Use woff2 format for all fonts
  • Set font-display to swap, optional, or fallback
  • Subset large fonts (≤100 KB each)
A+
Resource Caching
All resources properly cached
PASS
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+
Critical Rendering Path
No render-blocking resources
PASS
No render-blocking resources
Info::
No render-blocking resources detected
A+
Resource Hints
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
A+
LCP Image Preload
LCP preload audit not available
PASS
LCP preload audit not available
Info::
LCP image preload audit not available for this scan
A+
Server Response Intelligence
2 server-response signal(s) detected
PASS
2 server-response signal(s) detected
Info::
`Vary` header declared: Accept-Encoding,User-Agent,Accept-Language,Cookie
The page declares a `Vary` header, telling downstream caches which request headers the response varies on. Critical for content-negotiated responses (compression, language, cookies, device class).
Info::
No `ETag` or `Last-Modified` -- conditional GET not supported
Without either header, browsers can't issue conditional GETs and refresh always re-downloads the full response body even when nothing changed. Add `ETag: "<hash>"` (or `Last-Modified: <date>`) on cacheable responses; the server returns 304 Not Modified when the client's cached copy is still valid, saving bandwidth.
A+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
A+
CSS Performance Depth
No CSS performance depth issues detected
PASS
No CSS performance depth issues detected
Info::
No CSS performance depth issues detected
Network Waterfall
30 requests over 1945ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s FCP 5.3 s LCP 6.0 shttps://xvideos.com// https://xvideos.com/ — 301 — 474 B — 510 ms — h2https://www.xvideos.com/www.xvideos.com/ https://www.xvideos.com/ — 200 — 32.0 KiB — 389 ms — h2https://assets-cdn77.xvideos-cdn.com/v-701ef23b943/v3/css/default/main.cssassets-cdn77.xvideos-cdn.com/v-701e... https://assets-cdn77.xvideos-cdn.com/v-701ef23b943/v3/css/default/main.css — 200 — 218.6 KiB — 28 ms — h2https://www.xvideos.com/manifest.jsonwww.xvideos.com/manifest.json https://www.xvideos.com/manifest.json — 200 — 424 B — 497 ms — h2https://assets-cdn77.xvideos-cdn.com/v-5c725e8e246/v3/js/skins/min/default.header.static.jsassets-cdn77.xvideos-cdn.com/v-5c72... https://assets-cdn77.xvideos-cdn.com/v-5c725e8e246/v3/js/skins/min/default.header.static.js — 200 — 87.9 KiB — 15 ms — h2https://assets-cdn77.xvideos-cdn.com/img/lightbox/lightbox-blank.gifassets-cdn77.xvideos-cdn.com/img/li... https://assets-cdn77.xvideos-cdn.com/img/lightbox/lightbox-blank.gif — 200 — 481 B — 4 ms — h2https://assets-cdn77.xvideos-cdn.com/v-240a4f69694/v3/js/skins/min/default.footer.static.jsassets-cdn77.xvideos-cdn.com/v-240a... https://assets-cdn77.xvideos-cdn.com/v-240a4f69694/v3/js/skins/min/default.footer.static.js — 200 — 10.6 KiB — 10 ms — h2https://assets-cdn77.xvideos-cdn.com/v3/js/libs/jquery.min.jsassets-cdn77.xvideos-cdn.com/v3/js/... https://assets-cdn77.xvideos-cdn.com/v3/js/libs/jquery.min.js — 200 — 33.7 KiB — 6 ms — h2https://assets-cdn77.xvideos-cdn.com/v-2b48e4080c7/v3/js/i18n/front/english.jsonassets-cdn77.xvideos-cdn.com/v-2b48... https://assets-cdn77.xvideos-cdn.com/v-2b48e4080c7/v3/js/i18n/front/english.json — 200 — 39.7 KiB — 6 ms — h2https://assets-cdn77.xvideos-cdn.com/v3/js/skins/min/require.static.jsassets-cdn77.xvideos-cdn.com/v3/js/... https://assets-cdn77.xvideos-cdn.com/v3/js/skins/min/require.static.js — 200 — 6.9 KiB — 3 ms — h2https://assets-cdn77.xvideos-cdn.com/v3/img/skins/default/logo/xvideos.black.svgassets-cdn77.xvideos-cdn.com/v3/img... https://assets-cdn77.xvideos-cdn.com/v3/img/skins/default/logo/xvideos.black.svg — 200 — 1.9 KiB — 3 ms — h2https://assets-cdn77.xvideos-cdn.com/v-701ef23b943/v3/img/flags/flat/flags-16.pngassets-cdn77.xvideos-cdn.com/v-701e... https://assets-cdn77.xvideos-cdn.com/v-701ef23b943/v3/img/flags/flat/flags-16.png — 200 — 36.5 KiB — 5 ms — h2https://thumb-cdn77.xvideos-cdn.com/474ca075-4c93-41e7-bd13-eb8de29b4a1d/0/xv_4_t.jpgthumb-cdn77.xvideos-cdn.com/474ca07... https://thumb-cdn77.xvideos-cdn.com/474ca075-4c93-41e7-bd13-eb8de29b4a1d/0/xv_4_t.jpg — 200 — 24.8 KiB — 8 ms — h2https://assets-cdn77.xvideos-cdn.com/v-02511061135/v3/fonts/skins/common/iconfont/iconfont.woff2assets-cdn77.xvideos-cdn.com/v-0251... https://assets-cdn77.xvideos-cdn.com/v-02511061135/v3/fonts/skins/common/iconfont/iconfont.woff2 — 200 — 30.3 KiB — 6 ms — h2https://thumbs-gcore.xvideos-cdn.com/f924d1ba-848c-4f28-8c3e-563cb28a6192/3/xv_23_t.jpgthumbs-gcore.xvideos-cdn.com/f924d1... https://thumbs-gcore.xvideos-cdn.com/f924d1ba-848c-4f28-8c3e-563cb28a6192/3/xv_23_t.jpg — 200 — 11.9 KiB — 20 ms — h2https://thumb-cdn77.xvideos-cdn.com/c5a53a71-1be7-4a7b-9ba4-fd878f93f05c/3/xv_28_t.jpgthumb-cdn77.xvideos-cdn.com/c5a53a7... https://thumb-cdn77.xvideos-cdn.com/c5a53a71-1be7-4a7b-9ba4-fd878f93f05c/3/xv_28_t.jpg — 200 — 15.2 KiB — 5 ms — h2https://thumb-cdn77.xvideos-cdn.com/0a61a860-653b-4cb8-b92c-70254cb741a0/3/xv_11_t.jpgthumb-cdn77.xvideos-cdn.com/0a61a86... https://thumb-cdn77.xvideos-cdn.com/0a61a860-653b-4cb8-b92c-70254cb741a0/3/xv_11_t.jpg — 200 — 17.4 KiB — 8 ms — h2https://thumb-cdn77.xvideos-cdn.com/2c6b1fd9-2f4c-40c1-8780-79402c9259f9/3/xv_30_t.jpgthumb-cdn77.xvideos-cdn.com/2c6b1fd... https://thumb-cdn77.xvideos-cdn.com/2c6b1fd9-2f4c-40c1-8780-79402c9259f9/3/xv_30_t.jpg — 200 — 17.9 KiB — 4 ms — h2https://a.pemsrv.com/ad-provider.jsa.pemsrv.com/ad-provider.js https://a.pemsrv.com/ad-provider.js — 200 — 50.6 KiB — 17 ms — h2https://assets-cdn77.xvideos-cdn.com/v-d6b4df882a4/v3/js/skins/min/default.jsassets-cdn77.xvideos-cdn.com/v-d6b4... https://assets-cdn77.xvideos-cdn.com/v-d6b4df882a4/v3/js/skins/min/default.js — 200 — 510.5 KiB — 45 ms — h2https://assets-cdn77.xvideos-cdn.com/v3/img/skins/default/xv-inline-loader.gifassets-cdn77.xvideos-cdn.com/v3/img... https://assets-cdn77.xvideos-cdn.com/v3/img/skins/default/xv-inline-loader.gif — 200 — 1.1 KiB — 6 ms — h2https://assets-cdn77.xvideos-cdn.com/v3/img/skins/default/logo/xv.white.svgassets-cdn77.xvideos-cdn.com/v3/img... https://assets-cdn77.xvideos-cdn.com/v3/img/skins/default/logo/xv.white.svg — 200 — 997 B — 6 ms — h2https://assets-cdn77.xvideos-cdn.com/v-d6b4df882a4/v3/js/jquery.jsassets-cdn77.xvideos-cdn.com/v-d6b4... https://assets-cdn77.xvideos-cdn.com/v-d6b4df882a4/v3/js/jquery.js — 200 — 518 B — 3 ms — h2https://www.xvideos.com/android-chrome-192x192.pngwww.xvideos.com/android-chrome-192x... https://www.xvideos.com/android-chrome-192x192.png — 200 — 6.7 KiB — 171 ms — h2data:image/avif;base64,AAAAIGZ0eXBhdmlmAAAAAGF2aWZtaWYxbWlhZk1BMUIAAADybWV0YQAAAAAAAAAoaGRscgAAAAAA…data:image/avif;base64,AAAAIGZ0eXBh... data:image/avif;base64,AAAAIGZ0eXBhdmlmAAAAAGF2aWZtaWYxbWlhZk1BMUIAAADybWV0YQAAAAAAAAAoaGRscgAAAAAA… — 200 — 0 B — 0 ms — datahttps://assets-cdn77.xvideos-cdn.com/v-a6c3e667c0a/v3/css/default/main-black-base.cssassets-cdn77.xvideos-cdn.com/v-a6c3... https://assets-cdn77.xvideos-cdn.com/v-a6c3e667c0a/v3/css/default/main-black-base.css — 200 — 13.0 KiB — 7 ms — h2https://assets-cdn77.xvideos-cdn.com/v-101a52c3bf9/v3/css/default/main-black-specific.cssassets-cdn77.xvideos-cdn.com/v-101a... https://assets-cdn77.xvideos-cdn.com/v-101a52c3bf9/v3/css/default/main-black-specific.css — 200 — 206.7 KiB — 18 ms — h2https://assets-cdn77.xvideos-cdn.com/v-d6b4df882a4/v3/js/libs/hls-1.2.5.min.jsassets-cdn77.xvideos-cdn.com/v-d6b4... https://assets-cdn77.xvideos-cdn.com/v-d6b4df882a4/v3/js/libs/hls-1.2.5.min.js — 200 — 97.8 KiB — 21 ms — h2https://www.xvideos.com/switch-theme/auto?no_redirect=1www.xvideos.com/switch-theme/auto?n... https://www.xvideos.com/switch-theme/auto?no_redirect=1 — 200 — 3.2 KiB — 175 ms — h2https://assets-cdn77.xvideos-cdn.com/v3/img/skins/default/logo/xvideos.white.svgassets-cdn77.xvideos-cdn.com/v3/img... https://assets-cdn77.xvideos-cdn.com/v3/img/skins/default/logo/xvideos.white.svg — 200 — 1.9 KiB — 4 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
91% of JavaScript execution is third-party
First-party Third-party 3869ms · 890KB · £40/mo
www.xvideos.com
Other
Costly
Execution 1238ms
Transfer 32 KB
Monthly Cost £13/mo
assets-cdn77.xvideos-cdn.com
Other
Costly
Execution 856ms
Transfer 510 KB
Unused 81%
Monthly Cost £9/mo
assets-cdn77.xvideos-cdn.com
Other
Costly
Execution 854ms
Transfer 7 KB
Monthly Cost £9/mo
assets-cdn77.xvideos-cdn.com
Other
Costly
Execution 647ms
Transfer 88 KB
Unused 56%
Monthly Cost £7/mo
assets-cdn77.xvideos-cdn.com
Other
Optional
Execution 160ms
Transfer 219 KB
Monthly Cost £2/mo
assets-cdn77.xvideos-cdn.com
Other
Optional
Execution 112ms
Transfer 34 KB
Monthly Cost £1/mo

These scripts may cost more than they're worth

  • www.xvideos.com adds 1238ms and costs ~£13/month
  • assets-cdn77.xvideos-cdn.com adds 856ms and costs ~£9/month
  • assets-cdn77.xvideos-cdn.com adds 854ms and costs ~£9/month
  • assets-cdn77.xvideos-cdn.com adds 647ms and costs ~£7/month

91% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

When third-party JS execution time exceeds your own, performance gains from frontend work are capped by code you don't own.

Learn more ▾

Every millisecond of third-party JS competes with your own for main-thread time. If their share is bigger than yours, optimization on your code base barely moves the needle. Audit, defer, or remove third-parties before further frontend optimization. Use Lighthouse's third-party audit to identify the worst offenders.

Source: web.dev

www.xvideos.com takes 1238ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

assets-cdn77.xvideos-cdn.com takes 856ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

81% of assets-cdn77.xvideos-cdn.com's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

assets-cdn77.xvideos-cdn.com takes 854ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

assets-cdn77.xvideos-cdn.com takes 647ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

56% of assets-cdn77.xvideos-cdn.com's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

How third-party costs are calculated

Real-User Performance (CrUX)
Field metrics from the Chrome User Experience Report
INFO

Chrome User Experience (CrUX)

Real-user metrics from the Chrome UX Report (2026-04-27 — 2026-05-24)

LCP (p75)

6699 ms

26% good

INP (p75)

85 ms

92% good

CLS (p75)

0.130

67% good

FCP (p75)

5160 ms

TTFB (p75)

3297 ms

Image Optimization
46 images, 0 KB total, 0 KB wasted
INFO

Image Optimization Audit

Total Images

46

Total Size

0 KB

Oversized

22

45 missing alt text 45 missing dimensions 37 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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