Skip to content
https://xvideos.com

Performance

· 27 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
81
GRADE
B
FIX
3
REVIEW
10
PASS
10
INFO
4

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

Mobile Desktop
69
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
68
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.
83
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.

4.05 s

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

5.39 s

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

129 ms

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

0.010

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

4.05 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.

8.28 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 10 REVIEW 3 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 (1.2 MiB of 1.2 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Bundles
Action
7 scripts, 538 KB unused
FIX
7 scripts, 538 KB unused
Warning::
https://assets-cdn77.xvideos-cdn.com/v-d6b4df882a4...: 415 KB unused (82%)
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-5df5af49fee...: 38 KB unused (43%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 538 KB
538 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 KB415 KB (82%)✓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-5df5af49fee/v3/js/skins/min/default.header.static.js88 KB38 KB (43%)✓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

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
1.2 MB transferred, 26 requests
REVIEW
1.2 MB transferred, 26 requests
Info::
Page weighs 5.1 MB (1.2 MB transferred)
Warning::
JavaScript is 748 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 748 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::
26 HTTP requests
Info::
Estimated 0.24 g CO2 per page load
1.2 MB / 2.4 MB budget
1.2 MB transferred
26 requests
0.24 g CO2 per page load
JavaScript 747.5 KiB 63%
CSS 218.5 KiB 18%
Images 113.2 KiB 10%
Other 40.1 KiB 3%
HTML 31.9 KiB 3%
Fonts 30.3 KiB 3%
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
10 images, 0 KB saveable
REVIEW
10 images, 0 KB saveable
Warning::
https://assets-cdn77.xvideos-cdn.com/v3/img/skins/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://thumb-cdn77.xvideos-cdn.com/b5714261-c47a-... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://thumb-cdn77.xvideos-cdn.com/45affdfe-7462-... 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://thumb-cdn77.xvideos-cdn.com/98915fa6-62ca-... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://thumb-cdn77.xvideos-cdn.com/e33821e4-bcc4-... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
10 images 113 KB
0 oversized -0 KB
9 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

C
JS Execution Cost
Action
1892ms total JS execution
REVIEW
1892ms total JS execution
Warning::
https://assets-cdn77.xvideos-cdn.com/v-d6b4df882a4...: 562ms CPU time
Warning::
https://assets-cdn77.xvideos-cdn.com/v-5df5af49fee...: 551ms CPU time
Warning::
https://www.xvideos.com/: 281ms CPU time
Info::
Unattributable: 207ms CPU time
Info::
https://assets-cdn77.xvideos-cdn.com/v-266b439e030...: 126ms CPU time
Warning::
Third-party scripts: 1685ms (89% of total)

Main Thread Breakdown

Script Evaluation 38% Style & Layout 18% Other 18% Script Parsing & Compilation 14% Parse HTML & CSS 8%
ScriptTotalScriptingParse/CompileParty
https://assets-cdn77.xvideos-cdn.com/v-d6b4df882a4/v3/js/skins/min/default.js562ms284ms175ms3rd
https://assets-cdn77.xvideos-cdn.com/v-5df5af49fee/v3/js/skins/min/default.header.static.js551ms223ms24ms3rd
https://www.xvideos.com/281ms83ms31ms3rd
Unattributable207ms6ms0ms1st
https://assets-cdn77.xvideos-cdn.com/v-266b439e030/v3/css/default/main.css126ms0ms0ms3rd
https://assets-cdn77.xvideos-cdn.com/v3/js/skins/min/require.static.js112ms108ms2ms3rd
https://assets-cdn77.xvideos-cdn.com/v3/js/libs/jquery.min.js53ms36ms9ms3rd
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
Page Weight Inventory
Action
26 resources · 1.2 MB · 538 KB savings available
REVIEW
26 resources · 1.2 MB · 538 KB savings available
Warning::
Page weight 1.2 MB exceeds 1 MB target by 166 KB
Got: 1.2 MB Expected: ≤ 1 MB
Info::
~538 KB of savings available
Warning::
25 third-party resources (100% of weight)
Info::
2 resources over 200KB
26 resources · 1.2 MiB · 25 third-party 166.2 KiB over 1MB target
JavaScript 63% · 747.5 KiB
CSS 18% · 218.5 KiB
Image 10% · 120.9 KiB
Other 3% · 40.6 KiB
Document 3% · 32.4 KiB
Font 3% · 30.3 KiB

~538.2 KiB of savings available

Remove unused JavaScript: 538.2 KiB
B
JavaScript Blocking
2 JS blocking issue(s) detected
REVIEW
2 JS blocking issue(s) detected
Warning::
5 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.
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 FCP 4.1 s LCP 5.4 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 — 19 ms — font-display: swap
iconfont.woff2 woff2 swap
Size 30 KB
Load time 19 ms
Start 478 ms
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
26 requests over 870ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s FCP 4.1 s LCP 5.4 shttps://xvideos.com// https://xvideos.com/ — 301 — 474 B — 87 ms — h2https://www.xvideos.com/www.xvideos.com/ https://www.xvideos.com/ — 200 — 31.9 KiB — 110 ms — h2https://assets-cdn77.xvideos-cdn.com/v-266b439e030/v3/css/default/main.cssassets-cdn77.xvideos-cdn.com/v-266b... https://assets-cdn77.xvideos-cdn.com/v-266b439e030/v3/css/default/main.css — 200 — 218.5 KiB — 159 ms — h2https://assets-cdn77.xvideos-cdn.com/v-5df5af49fee/v3/js/skins/min/default.header.static.jsassets-cdn77.xvideos-cdn.com/v-5df5... https://assets-cdn77.xvideos-cdn.com/v-5df5af49fee/v3/js/skins/min/default.header.static.js — 200 — 87.6 KiB — 140 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 — 467 B — 155 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 — 142 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 — 33.6 KiB — 19 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 — 18 ms — h2https://www.xvideos.com/manifest.jsonwww.xvideos.com/manifest.json https://www.xvideos.com/manifest.json — 200 — 424 B — 83 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 — 18 ms — h2https://assets-cdn77.xvideos-cdn.com/v-c28b33faeca/v3/js/i18n/front/english.jsonassets-cdn77.xvideos-cdn.com/v-c28b... https://assets-cdn77.xvideos-cdn.com/v-c28b33faeca/v3/js/i18n/front/english.json — 200 — 39.7 KiB — 20 ms — h2https://www.xvideos.com/metrics/disclaimer/show?_=959079179www.xvideos.com/metrics/disclaimer/... https://www.xvideos.com/metrics/disclaimer/show?_=959079179 — 200 — 469 B — 31 ms — h2https://assets-cdn77.xvideos-cdn.com/v3/img/skins/default/logo/xvideos.white.pngassets-cdn77.xvideos-cdn.com/v3/img... https://assets-cdn77.xvideos-cdn.com/v3/img/skins/default/logo/xvideos.white.png — 200 — 4.0 KiB — 18 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 — 19 ms — h2https://assets-cdn77.xvideos-cdn.com/v-266b439e030/v3/img/flags/flat/flags-16.pngassets-cdn77.xvideos-cdn.com/v-266b... https://assets-cdn77.xvideos-cdn.com/v-266b439e030/v3/img/flags/flat/flags-16.png — 200 — 36.5 KiB — 19 ms — h2https://thumb-cdn77.xvideos-cdn.com/98915fa6-62ca-4938-a985-f10a3abb0cd1/3/xv_2_t.jpgthumb-cdn77.xvideos-cdn.com/98915fa... https://thumb-cdn77.xvideos-cdn.com/98915fa6-62ca-4938-a985-f10a3abb0cd1/3/xv_2_t.jpg — 200 — 15.5 KiB — 190 ms — h2https://thumb-cdn77.xvideos-cdn.com/e33821e4-bcc4-4740-bc4b-4da3d02b86a9/3/xv_13_t.jpgthumb-cdn77.xvideos-cdn.com/e33821e... https://thumb-cdn77.xvideos-cdn.com/e33821e4-bcc4-4740-bc4b-4da3d02b86a9/3/xv_13_t.jpg — 200 — 22.2 KiB — 153 ms — h2https://thumb-cdn77.xvideos-cdn.com/b5714261-c47a-4d71-9f2a-7f133ff5521b/3/xv_4_t.jpgthumb-cdn77.xvideos-cdn.com/b571426... https://thumb-cdn77.xvideos-cdn.com/b5714261-c47a-4d71-9f2a-7f133ff5521b/3/xv_4_t.jpg — 200 — 17.8 KiB — 172 ms — h2https://thumb-cdn77.xvideos-cdn.com/45affdfe-7462-40f4-b60e-b852f52bc968/3/xv_16_t.jpgthumb-cdn77.xvideos-cdn.com/45affdf... https://thumb-cdn77.xvideos-cdn.com/45affdfe-7462-40f4-b60e-b852f52bc968/3/xv_16_t.jpg — 200 — 13.7 KiB — 157 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 — 510.4 KiB — 56 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 — 18 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 — 988 B — 19 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 — 29 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 — 519 B — 22 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-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 — 22 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
89% of JavaScript execution is third-party
First-party Third-party 1685ms · 889KB · £17/mo
assets-cdn77.xvideos-cdn.com
Other
Costly
Execution 562ms
Transfer 510 KB
Unused 82%
Monthly Cost £6/mo
assets-cdn77.xvideos-cdn.com
Other
Costly
Execution 551ms
Transfer 88 KB
Unused 43%
Monthly Cost £6/mo
www.xvideos.com
Other
Costly
Execution 281ms
Transfer 32 KB
Monthly Cost £3/mo
assets-cdn77.xvideos-cdn.com
Other
Optional
Execution 126ms
Transfer 219 KB
Monthly Cost £1/mo
assets-cdn77.xvideos-cdn.com
Other
Optional
Execution 112ms
Transfer 7 KB
Monthly Cost £1/mo
assets-cdn77.xvideos-cdn.com
Other
Optional
Execution 53ms
Transfer 34 KB
Monthly Cost £1/mo

These scripts may cost more than they're worth

  • assets-cdn77.xvideos-cdn.com adds 562ms and costs ~£6/month
  • assets-cdn77.xvideos-cdn.com adds 551ms and costs ~£6/month
  • www.xvideos.com adds 281ms and costs ~£3/month

89% 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

assets-cdn77.xvideos-cdn.com takes 562ms 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

82% 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 551ms 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

www.xvideos.com takes 281ms 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

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 (2026-04-26 — 2026-05-23)

LCP (p75)

6764 ms

26% good

INP (p75)

84 ms

92% good

CLS (p75)

0.130

67% good

FCP (p75)

5235 ms

TTFB (p75)

3359 ms

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

Image Optimization Audit

Total Images

46

Total Size

0 KB

Oversized

16

44 missing alt text 45 missing dimensions 36 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

Send Feedback