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Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
86
GRADE
B
FIX
2
REVIEW
3
PASS
8
INFO
2

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

Mobile Desktop
97
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
70
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
96
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
67
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.

882 ms

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

1.15 s

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

0 ms

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

0.012

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

882 ms

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

1.15 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
15
8 PASS 3 REVIEW 2 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 (769.3 KiB of 769.4 KiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
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.

C
Image Optimization
Action
26 images, 0 KB saveable
REVIEW
26 images, 0 KB saveable
Warning::
https://images.videolan.org/images/partners/mux.pn... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.videolan.org/images/partners/gemini... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.videolan.org/images/partners/videol... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.videolan.org/images/partners/kwu.pn... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.videolan.org/images/VLMC-IconSmall.... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.videolan.org/images/partners/youtub... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.videolan.org/images/VLC-IconSmall.p... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.videolan.org/images/x264-IconSmall.... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.videolan.org/images/cash.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.videolan.org/images/tools.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.videolan.org/images/logoGrey.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.videolan.org/images/DVBlast-IconSma... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.videolan.org/images/heart.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
26 images 268 KB
0 oversized -0 KB
26 legacy format
13 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

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

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
JS Bundles
7 scripts, 126 KB unused
REVIEW
7 scripts, 126 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=UA-388...: 63 KB unused (51%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-GZPM...: 63 KB unused (43%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 126 KB
126 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=UA-38853043-1125 KB63 KB (51%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-GZPMWXW7NJ&cx=c&gtm=4e64h1146 KB63 KB (43%)✓3rd
https://images.videolan.org/js/jquery.min.js37 KB—✓3rd
https://images.videolan.org/js/bootstrap.min.js3 KB—✓3rd
https://www.videolan.org/js/slick-init.js1 KB—✓3rd
https://www.videolan.org/js/slick.min.js12 KB—✓3rd
https://www.google-analytics.com/analytics.js21 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

C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A
Page Weight Budget
769 KB transferred, 42 requests
PASS
769 KB transferred, 42 requests
Info::
Page weighs 1.6 MB (769 KB transferred)
Info::
42 HTTP requests
Info::
Estimated 0.16 g CO2 per page load
769 KB / 2.4 MB budget
769 KB transferred
42 requests
0.16 g CO2 per page load
JavaScript 345.9 KiB 45%
Images 268.4 KiB 35%
Fonts 110.5 KiB 14%
CSS 27.5 KiB 4%
HTML 15.2 KiB 2%
Other 1.4 KiB 0%
Other 550 B 0%
0 2.4 MB 4.9 MB
Under budget
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+
JS Execution Cost
407ms total JS execution
PASS
407ms total JS execution
Info::
https://www.videolan.org/: 195ms CPU time
Info::
Unattributable: 154ms CPU time
Info::
https://images.videolan.org/js/jquery.min.js: 59ms CPU time
Warning::
Third-party scripts: 407ms (100% of total)

Main Thread Breakdown

Other 31% Script Evaluation 28% Style & Layout 17% Rendering 17% Script Parsing & Compilation 5%
ScriptTotalScriptingParse/CompileParty
https://www.videolan.org/195ms2ms1ms3rd
Unattributable154ms21ms0ms3rd
https://images.videolan.org/js/jquery.min.js59ms43ms2ms3rd
A+
Font Loading
2 fonts (111 KB)
PASS
2 fonts (111 KB)
Info::
2 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

2

111 KB total

Render-blocking

0

of 2

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s FCP 882 ms LCP 1.2 shttps://images.videolan.org/style/fonts/Raleway/Raleway-Thin.woff2Raleway-Thin.woff2 https://images.videolan.org/style/fonts/Raleway/Raleway-Thin.woff2 — 48.3 KiB — 89 ms — font-display: swaphttps://images.videolan.org/style/fonts/Raleway/Raleway-Regular.woff2Raleway-Regular.woff2 https://images.videolan.org/style/fonts/Raleway/Raleway-Regular.woff2 — 62.2 KiB — 106 ms — font-display: swap
Raleway-Thin.woff2 woff2 swap
Size 48 KB
Load time 89 ms
Start 234 ms
Risk FOUT — text flashes from fallback to web font
Raleway-Regular.woff2 woff2 swap
Size 62 KB
Load time 106 ms
Start 235 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
Page Weight Inventory
42 resources · 769 KB · 126 KB savings available
PASS
42 resources · 769 KB · 126 KB savings available
Info::
Within 1MB page-weight target
Got: 769 KB
Info::
~126 KB of savings available
Warning::
41 third-party resources (100% of weight)
42 resources · 769.4 KiB · 41 third-party Within 1MB page-weight target
JavaScript 45% · 345.9 KiB
Image 35% · 269.6 KiB
Font 14% · 110.5 KiB
CSS 4% · 27.5 KiB
Document 2% · 15.3 KiB
Other 0% · 550 B

~126.1 KiB of savings available

Remove unused JavaScript: 126.1 KiB
Network Waterfall
42 requests over 563ms
INFO
0 ms 500 ms 1.0 s FCP 882 ms LCP 1.2 shttps://videolan.org// https://videolan.org/ — 301 — 116 B — 57 ms — h2https://www.videolan.org/www.videolan.org/ https://www.videolan.org/ — 200 — 15.2 KiB — 41 ms — h2https://images.videolan.org/style/bootstrap.min.cssimages.videolan.org/style/bootstrap... https://images.videolan.org/style/bootstrap.min.css — 200 — 18.8 KiB — 40 ms — h2https://images.videolan.org/style/style.min.cssimages.videolan.org/style/style.min... https://images.videolan.org/style/style.min.css — 200 — 7.2 KiB — 23 ms — h2https://www.videolan.org/style/slick.min.csswww.videolan.org/style/slick.min.cs... https://www.videolan.org/style/slick.min.css — 200 — 1.5 KiB — 21 ms — h2https://images.videolan.org/js/jquery.min.jsimages.videolan.org/js/jquery.min.j... https://images.videolan.org/js/jquery.min.js — 200 — 37.4 KiB — 43 ms — h2https://images.videolan.org/images/logoBlue.pngimages.videolan.org/images/logoBlue... https://images.videolan.org/images/logoBlue.png — 200 — 2.0 KiB — 44 ms — h2https://images.videolan.org/images/partners/mux.pngimages.videolan.org/images/partners... https://images.videolan.org/images/partners/mux.png — 200 — 10.6 KiB — 23 ms — h2https://images.videolan.org/images/partners/geminiso.pngimages.videolan.org/images/partners... https://images.videolan.org/images/partners/geminiso.png — 200 — 20.3 KiB — 32 ms — h2https://images.videolan.org/images/partners/videolabs.pngimages.videolan.org/images/partners... https://images.videolan.org/images/partners/videolabs.png — 200 — 3.1 KiB — 19 ms — h2https://images.videolan.org/images/partners/kwu.pngimages.videolan.org/images/partners... https://images.videolan.org/images/partners/kwu.png — 200 — 18.5 KiB — 20 ms — h2https://images.videolan.org/js/bootstrap.min.jsimages.videolan.org/js/bootstrap.mi... https://images.videolan.org/js/bootstrap.min.js — 200 — 3.5 KiB — 26 ms — h2https://www.videolan.org/js/slick-init.jswww.videolan.org/js/slick-init.js https://www.videolan.org/js/slick-init.js — 200 — 750 B — 28 ms — h2https://www.videolan.org/js/slick.min.jswww.videolan.org/js/slick.min.js https://www.videolan.org/js/slick.min.js — 200 — 12.1 KiB — 30 ms — h2https://www.googletagmanager.com/gtag/js?id=UA-38853043-1www.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=UA-38853043-1 — 200 — 125.4 KiB — 137 ms — h2https://images.videolan.org/images/partners/youtube_logo.svgimages.videolan.org/images/partners... https://images.videolan.org/images/partners/youtube_logo.svg — 200 — 1.9 KiB — 22 ms — h2https://images.videolan.org/vlc/screenshots/3.0.0/3.0.17-windows11-fitted.jpgimages.videolan.org/vlc/screenshots... https://images.videolan.org/vlc/screenshots/3.0.0/3.0.17-windows11-fitted.jpg — 200 — 69.6 KiB — 31 ms — h2https://images.videolan.org/images/icons-VLC/vlc.mini.svgimages.videolan.org/images/icons-VL... https://images.videolan.org/images/icons-VLC/vlc.mini.svg — 200 — 55.7 KiB — 36 ms — h2https://www.videolan.org/style/images/downloadButtonGradientOrangeBright.pngwww.videolan.org/style/images/downl... https://www.videolan.org/style/images/downloadButtonGradientOrangeBright.png — 200 — 531 B — 37 ms — h2https://images.videolan.org/images/VLC-IconSmall.pngimages.videolan.org/images/VLC-Icon... https://images.videolan.org/images/VLC-IconSmall.png — 200 — 8.5 KiB — 33 ms — h2https://images.videolan.org/images/VLMC-IconSmall.pngimages.videolan.org/images/VLMC-Ico... https://images.videolan.org/images/VLMC-IconSmall.png — 200 — 14.9 KiB — 21 ms — h2https://images.videolan.org/images/DVBlast-IconSmall.pngimages.videolan.org/images/DVBlast-... https://images.videolan.org/images/DVBlast-IconSmall.png — 200 — 13.9 KiB — 29 ms — h2https://images.videolan.org/images/x264-IconSmall.pngimages.videolan.org/images/x264-Ico... https://images.videolan.org/images/x264-IconSmall.png — 200 — 14.3 KiB — 23 ms — h2https://images.videolan.org/images/cash.pngimages.videolan.org/images/cash.png https://images.videolan.org/images/cash.png — 200 — 3.8 KiB — 24 ms — h2https://images.videolan.org/images/tools.pngimages.videolan.org/images/tools.pn... https://images.videolan.org/images/tools.png — 200 — 5.6 KiB — 21 ms — h2https://images.videolan.org/images/heart.pngimages.videolan.org/images/heart.pn... https://images.videolan.org/images/heart.png — 200 — 5.8 KiB — 23 ms — h2https://images.videolan.org/images/logoGrey.pngimages.videolan.org/images/logoGrey... https://images.videolan.org/images/logoGrey.png — 200 — 2.0 KiB — 25 ms — h2https://images.videolan.org/images/euro.pngimages.videolan.org/images/euro.png https://images.videolan.org/images/euro.png — 200 — 546 B — 20 ms — h2https://images.videolan.org/images/dollar.pngimages.videolan.org/images/dollar.p... https://images.videolan.org/images/dollar.png — 200 — 577 B — 23 ms — h2https://images.videolan.org/images/icons/platform-sprite.pngimages.videolan.org/images/icons/pl... https://images.videolan.org/images/icons/platform-sprite.png — 200 — 11.6 KiB — 24 ms — h2
0 ms 500 ms 1.0 s FCP 882 ms LCP 1.2 shttps://videolan.org// https://videolan.org/ — 301 — 116 B — 57 ms — h2https://www.videolan.org/www.videolan.org/ https://www.videolan.org/ — 200 — 15.2 KiB — 41 ms — h2https://images.videolan.org/style/bootstrap.min.cssimages.videolan.org/style/bootstrap... https://images.videolan.org/style/bootstrap.min.css — 200 — 18.8 KiB — 40 ms — h2https://images.videolan.org/style/style.min.cssimages.videolan.org/style/style.min... https://images.videolan.org/style/style.min.css — 200 — 7.2 KiB — 23 ms — h2https://www.videolan.org/style/slick.min.csswww.videolan.org/style/slick.min.cs... https://www.videolan.org/style/slick.min.css — 200 — 1.5 KiB — 21 ms — h2https://images.videolan.org/js/jquery.min.jsimages.videolan.org/js/jquery.min.j... https://images.videolan.org/js/jquery.min.js — 200 — 37.4 KiB — 43 ms — h2https://images.videolan.org/images/logoBlue.pngimages.videolan.org/images/logoBlue... https://images.videolan.org/images/logoBlue.png — 200 — 2.0 KiB — 44 ms — h2https://images.videolan.org/images/partners/mux.pngimages.videolan.org/images/partners... https://images.videolan.org/images/partners/mux.png — 200 — 10.6 KiB — 23 ms — h2https://images.videolan.org/images/partners/geminiso.pngimages.videolan.org/images/partners... https://images.videolan.org/images/partners/geminiso.png — 200 — 20.3 KiB — 32 ms — h2https://images.videolan.org/images/partners/videolabs.pngimages.videolan.org/images/partners... https://images.videolan.org/images/partners/videolabs.png — 200 — 3.1 KiB — 19 ms — h2https://images.videolan.org/images/partners/kwu.pngimages.videolan.org/images/partners... https://images.videolan.org/images/partners/kwu.png — 200 — 18.5 KiB — 20 ms — h2https://images.videolan.org/js/bootstrap.min.jsimages.videolan.org/js/bootstrap.mi... https://images.videolan.org/js/bootstrap.min.js — 200 — 3.5 KiB — 26 ms — h2https://www.videolan.org/js/slick-init.jswww.videolan.org/js/slick-init.js https://www.videolan.org/js/slick-init.js — 200 — 750 B — 28 ms — h2https://www.videolan.org/js/slick.min.jswww.videolan.org/js/slick.min.js https://www.videolan.org/js/slick.min.js — 200 — 12.1 KiB — 30 ms — h2https://www.googletagmanager.com/gtag/js?id=UA-38853043-1www.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=UA-38853043-1 — 200 — 125.4 KiB — 137 ms — h2https://images.videolan.org/images/partners/youtube_logo.svgimages.videolan.org/images/partners... https://images.videolan.org/images/partners/youtube_logo.svg — 200 — 1.9 KiB — 22 ms — h2https://images.videolan.org/vlc/screenshots/3.0.0/3.0.17-windows11-fitted.jpgimages.videolan.org/vlc/screenshots... https://images.videolan.org/vlc/screenshots/3.0.0/3.0.17-windows11-fitted.jpg — 200 — 69.6 KiB — 31 ms — h2https://images.videolan.org/images/icons-VLC/vlc.mini.svgimages.videolan.org/images/icons-VL... https://images.videolan.org/images/icons-VLC/vlc.mini.svg — 200 — 55.7 KiB — 36 ms — h2https://www.videolan.org/style/images/downloadButtonGradientOrangeBright.pngwww.videolan.org/style/images/downl... https://www.videolan.org/style/images/downloadButtonGradientOrangeBright.png — 200 — 531 B — 37 ms — h2https://images.videolan.org/images/VLC-IconSmall.pngimages.videolan.org/images/VLC-Icon... https://images.videolan.org/images/VLC-IconSmall.png — 200 — 8.5 KiB — 33 ms — h2https://images.videolan.org/images/VLMC-IconSmall.pngimages.videolan.org/images/VLMC-Ico... https://images.videolan.org/images/VLMC-IconSmall.png — 200 — 14.9 KiB — 21 ms — h2https://images.videolan.org/images/DVBlast-IconSmall.pngimages.videolan.org/images/DVBlast-... https://images.videolan.org/images/DVBlast-IconSmall.png — 200 — 13.9 KiB — 29 ms — h2https://images.videolan.org/images/x264-IconSmall.pngimages.videolan.org/images/x264-Ico... https://images.videolan.org/images/x264-IconSmall.png — 200 — 14.3 KiB — 23 ms — h2https://images.videolan.org/images/cash.pngimages.videolan.org/images/cash.png https://images.videolan.org/images/cash.png — 200 — 3.8 KiB — 24 ms — h2https://images.videolan.org/images/tools.pngimages.videolan.org/images/tools.pn... https://images.videolan.org/images/tools.png — 200 — 5.6 KiB — 21 ms — h2https://images.videolan.org/images/heart.pngimages.videolan.org/images/heart.pn... https://images.videolan.org/images/heart.png — 200 — 5.8 KiB — 23 ms — h2https://images.videolan.org/images/logoGrey.pngimages.videolan.org/images/logoGrey... https://images.videolan.org/images/logoGrey.png — 200 — 2.0 KiB — 25 ms — h2https://images.videolan.org/images/euro.pngimages.videolan.org/images/euro.png https://images.videolan.org/images/euro.png — 200 — 546 B — 20 ms — h2https://images.videolan.org/images/dollar.pngimages.videolan.org/images/dollar.p... https://images.videolan.org/images/dollar.png — 200 — 577 B — 23 ms — h2https://images.videolan.org/images/icons/platform-sprite.pngimages.videolan.org/images/icons/pl... https://images.videolan.org/images/icons/platform-sprite.png — 200 — 11.6 KiB — 24 ms — h2https://images.videolan.org/images/icons/social/twitter.svgimages.videolan.org/images/icons/so... https://images.videolan.org/images/icons/social/twitter.svg — 200 — 502 B — 19 ms — h2https://images.videolan.org/images/icons/social/facebook.svgimages.videolan.org/images/icons/so... https://images.videolan.org/images/icons/social/facebook.svg — 200 — 655 B — 21 ms — h2https://images.videolan.org/images/icons/social/mastodon.svgimages.videolan.org/images/icons/so... https://images.videolan.org/images/icons/social/mastodon.svg — 200 — 2.0 KiB — 23 ms — h2https://images.videolan.org/style/fonts/Raleway/Raleway-Thin.woff2images.videolan.org/style/fonts/Ral... https://images.videolan.org/style/fonts/Raleway/Raleway-Thin.woff2 — 200 — 48.3 KiB — 89 ms — h2https://images.videolan.org/style/fonts/Raleway/Raleway-Regular.woff2images.videolan.org/style/fonts/Ral... https://images.videolan.org/style/fonts/Raleway/Raleway-Regular.woff2 — 200 — 62.2 KiB — 106 ms — h2https://www.videolan.org/images/icons/arrow-left.pngwww.videolan.org/images/icons/arrow... https://www.videolan.org/images/icons/arrow-left.png — 200 — 511 B — 21 ms — h2https://www.videolan.org/images/icons/ripple-loader.svgwww.videolan.org/images/icons/rippl... https://www.videolan.org/images/icons/ripple-loader.svg — 200 — 686 B — 22 ms — h2https://www.videolan.org/images/icons/arrow-right.pngwww.videolan.org/images/icons/arrow... https://www.videolan.org/images/icons/arrow-right.png — 200 — 512 B — 23 ms — h2https://www.googletagmanager.com/gtag/js?id=G-GZPMWXW7NJ&cx=c&gtm=4e64h1www.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-GZPMWXW7NJ&cx=c&gtm=4e64h1 — 200 — 145.9 KiB — 49 ms — h2https://www.google-analytics.com/analytics.jswww.google-analytics.com/analytics.... https://www.google-analytics.com/analytics.js — 200 — 20.9 KiB — 85 ms — h2https://images.videolan.org/images/favicon.icoimages.videolan.org/images/favicon.... https://images.videolan.org/images/favicon.ico — 200 — 1.3 KiB — 19 ms — h2https://region1.google-analytics.com/g/collect?v=2&tid=G-GZPMWXW7NJ&gtm=45je64h1v9116941577za20g&_p=1776801461041&gcd=13l3l3l2l1l1&npa=1&dma_cps=a&dma=1&_eu=EAAI&are=1&cid=99936081.1776801461&frm=0&ir=1&pscdl=noapi&rcb=2&sr=800x600&uaa=x86&uab=64&uafvl=Chromium%3B147.0.7727.101%7CNot.A%252FBrand%3B8.0.0.0&uam=&uamb=0&uap=macOS&uapv=10.15.7&uaw=0&ul=en-us&_s=1&tag_exp=0~115616985~115938466~115938468~117266401&sid=1776801461&sct=1&seg=0&dl=https%3A%2F%2Fwww.videolan.org%2F&dt=VLC%3A%20Official%20site%20-%20Free%20multimedia%20solutions%20for%20all%20OS!%20-%20VideoLAN&en=page_view&_fv=1&_nsi=1&_ss=1&ep.anonymize_ip=true&tfd=496region1.google-analytics.com/g/coll... https://region1.google-analytics.com/g/collect?v=2&tid=G-GZPMWXW7NJ&gtm=45je64h1v9116941577za20g&_p=1776801461041&gcd=13l3l3l2l1l1&npa=1&dma_cps=a&dma=1&_eu=EAAI&are=1&cid=99936081.1776801461&frm=0&ir=1&pscdl=noapi&rcb=2&sr=800x600&uaa=x86&uab=64&uafvl=Chromium%3B147.0.7727.101%7CNot.A%252FBrand%3B8.0.0.0&uam=&uamb=0&uap=macOS&uapv=10.15.7&uaw=0&ul=en-us&_s=1&tag_exp=0~115616985~115938466~115938468~117266401&sid=1776801461&sct=1&seg=0&dl=https%3A%2F%2Fwww.videolan.org%2F&dt=VLC%3A%20Official%20site%20-%20Free%20multimedia%20solutions%20for%20all%20OS!%20-%20VideoLAN&en=page_view&_fv=1&_nsi=1&_ss=1&ep.anonymize_ip=true&tfd=496 — 204 — 550 B — 67 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
100% of JavaScript execution is third-party
First-party Third-party 407ms · 53KB · $5/mo
www.videolan.org
Other
Optional
Execution 195ms
Transfer 15 KB
Monthly Cost $3/mo
Unattributable
Other
Optional
Execution 154ms
Transfer 0 KB
Monthly Cost $2/mo
images.videolan.org
Other
Optional
Execution 59ms
Transfer 37 KB
Monthly Cost $1/mo

100% 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

How third-party costs are calculated

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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