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https://rtl.fr

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
70
GRADE
C
FIX
6
REVIEW
2
PASS
7
INFO
2

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

Mobile Desktop
30
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
69
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
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.

3.69 s

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

16.81 s

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

2.23 s

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

0.074

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

8.32 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.

19.30 s

Page Load Progression

759 ms
1.5 s
2.3 s
3.0 s
3.8 s
4.6 s
5.3 s
6.1 s
Checks
17
7 PASS 2 REVIEW 6 FIX
F
Page Weight Budget
Action
3.4 MB transferred, 48 requests
FIX
3.4 MB transferred, 48 requests
Warning::
Page weighs 8.6 MB (3.4 MB transferred)
Warning::
Images are 1.7 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 1.7 MB
Warning::
JavaScript is 1.3 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.3 MB
Info::
48 HTTP requests
Info::
Estimated 0.71 g CO2 per page load
3.4 MB / 2.4 MB budget
3.4 MB transferred
48 requests
0.71 g CO2 per page load
Images 1.7 MiB 52%
JavaScript 1.3 MiB 39%
HTML 223.8 KiB 6%
Fonts 92.7 KiB 3%
Other 1.4 KiB 0%
Other 740 B 0%
Other 649 B 0%
Other 573 B 0%
0 2.4 MB 4.9 MB
Over budget

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Why this matters

Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.

Source: web.dev

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

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 (3.4 MiB of 3.4 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Execution Cost
Action
8635ms total JS execution
FIX
8635ms total JS execution
Warning::
https://static.rtl.fr/versions/www/7.0.397/rtl.js: 3148ms CPU time
Warning::
https://www.rtl.fr/: 3067ms CPU time
Warning::
Unattributable: 922ms CPU time
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-KJD...: 763ms CPU time
Warning::
https://consent.rtl.fr/sdk/d4911c3d5b4b9a80b40e051...: 421ms CPU time
Warning::
Third-party scripts: 8635ms (100% of total)

Main Thread Breakdown

Script Evaluation 36% Other 27% Style & Layout 18% Script Parsing & Compilation 9% Rendering 6% Parse HTML & CSS 4%
ScriptTotalScriptingParse/CompileParty
https://static.rtl.fr/versions/www/7.0.397/rtl.js3148ms1820ms535ms3rd
https://www.rtl.fr/3067ms27ms4ms3rd
Unattributable922ms54ms0ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-KJDT3TM763ms639ms75ms3rd
https://consent.rtl.fr/sdk/d4911c3d5b4b9a80b40e05167f53d1b1e8da81f3/modern/sdk.d4911c3d5b4b9a80b40e05167f53d1b1e8da81f3.js421ms337ms59ms3rd
https://consent.rtl.fr/sdk/d4911c3d5b4b9a80b40e05167f53d1b1e8da81f3/modern/ui-web-fr-web.d4911c3d5b4b9a80b40e05167f53d1b1e8da81f3.js241ms144ms33ms3rd
https://tag.aticdn.net/piano-analytics.js73ms59ms12ms3rd
F
JS Bundles
Action
9 scripts, 693 KB unused
FIX
9 scripts, 693 KB unused
Warning::
https://static.rtl.fr/versions/www/7.0.397/rtl.js: 563 KB unused (59%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-KJD...: 65 KB unused (45%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://consent.rtl.fr/sdk/d4911c3d5b4b9a80b40e051...: 45 KB unused (44%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://static.gimii.fr/sdk-2.9.0.js: 20 KB unused (60%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 693 KB
693 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://static.rtl.fr/versions/www/7.0.397/rtl.js947 KB563 KB (59%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-KJDT3TM145 KB65 KB (45%)✓3rd
https://consent.rtl.fr/sdk/d4911c3d5b4b9a80b40e05167f53d1b1e8da81f3/modern/sdk.d4911c3d5b4b9a80b40e05167f53d1b1e8da81f3.js102 KB45 KB (44%)✓3rd
https://static.gimii.fr/sdk-2.9.0.js33 KB20 KB (60%)✓3rd
https://consent.rtl.fr/4801407c-7ff1-4aed-aa34-71b05434f911/loader.js?target_type=notice&target=Q292GtrV36 KB—✓3rd
https://tag.aticdn.net/piano-analytics.js27 KB—✓3rd
https://l.rtl.fr/sdk.js1 KB—✓3rd
https://static.gimii.fr/gimii.js2 KB—✓3rd
https://consent.rtl.fr/sdk/d4911c3d5b4b9a80b40e05167f53d1b1e8da81f3/modern/ui-web-fr-web.d4911c3d5b4b9a80b40e05167f53d1b1e8da81f3.js56 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
48 resources · 3.4 MB · 693 KB savings available
FIX
48 resources · 3.4 MB · 693 KB savings available
Warning::
Page weight 2.4 MB over 1MB target
Got: 3.4 MB Expected: ≤ 1 MB
Info::
~693 KB of savings available
Warning::
47 third-party resources (100% of weight)
Info::
3 resources over 200KB
48 resources · 3.4 MiB · 47 third-party 2.4 MiB over 1MB target
Image 52% · 1.7 MiB
JavaScript 39% · 1.3 MiB
Document 6% · 223.8 KiB
Font 3% · 92.7 KiB
Other 0% · 2.0 KiB

~692.7 KiB of savings available

Remove unused JavaScript: 692.7 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
Image Optimization
26 images, 0 KB saveable
REVIEW
26 images, 0 KB saveable
Info::
All images are well-optimized
26 images 1.7 MB
0 oversized -0 KB
25 legacy format
0 missing dimensions CLS risk
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
5 fonts (93 KB)
PASS
5 fonts (93 KB)
Info::
5 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

5

93 KB total

Render-blocking

0

of 5

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s FCP 3.7 s LCP 16.8 sdata:font/x-font-woff;charset=utf-8;base64,d09GRgABAAAAAC/wAAsAAAAAVXwAAQAAAAAAAAAAAAAAAAAAAAAAAAAA…wAAsAAAAAVXwAAQAAAAAAAA... data:font/x-font-woff;charset=utf-8;base64,d09GRgABAAAAAC/wAAsAAAAAVXwAAQAAAAAAAAAAAAAAAAAAAAAAAAAA… — 12.0 KiB — 91 ms — font-display: swaphttps://static.rtl.fr/versions/www/7.0.397/fonts/Roboto/roboto-v27-latin-regular.woffroboto-v27-latin-regula... https://static.rtl.fr/versions/www/7.0.397/fonts/Roboto/roboto-v27-latin-regular.woff — 20.1 KiB — 1.1 s — font-display: swaphttps://static.rtl.fr/versions/www/7.0.397/fonts/Roboto/roboto-v27-latin-700.woffroboto-v27-latin-700.woff https://static.rtl.fr/versions/www/7.0.397/fonts/Roboto/roboto-v27-latin-700.woff — 20.1 KiB — 886 ms — font-display: swaphttps://static.rtl.fr/versions/www/7.0.397/fonts/Roboto/roboto-v27-latin-500.woffroboto-v27-latin-500.woff https://static.rtl.fr/versions/www/7.0.397/fonts/Roboto/roboto-v27-latin-500.woff — 20.3 KiB — 1.3 s — font-display: swaphttps://static.rtl.fr/versions/www/7.0.397/fonts/Roboto/roboto-v27-latin-100.woffroboto-v27-latin-100.woff https://static.rtl.fr/versions/www/7.0.397/fonts/Roboto/roboto-v27-latin-100.woff — 20.2 KiB — 1.1 s — font-display: swap
wAAsAAAAAVXwAAQAAAAAAAA... woff swap
Size 12 KB
Load time 91 ms
Start 1.3 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
roboto-v27-latin-regula... woff swap
Size 20 KB
Load time 1.1 s
Start 1.4 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
roboto-v27-latin-700.woff woff swap
Size 20 KB
Load time 886 ms
Start 1.4 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
roboto-v27-latin-500.woff woff swap
Size 20 KB
Load time 1.3 s
Start 1.4 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
roboto-v27-latin-100.woff woff swap
Size 20 KB
Load time 1.1 s
Start 1.4 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
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)

Fixing the unchecked items could save ~28 KB and ~56 ms

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+
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
Network Waterfall
48 requests over 5934ms
INFO
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s FCP 3.7 s LCP 16.8 shttps://rtl.fr// https://rtl.fr/ — 301 — 39 B — 759 ms — h2https://www.rtl.fr/www.rtl.fr/ https://www.rtl.fr/ — 200 — 223.8 KiB — 443 ms — h2https://www.googletagmanager.com/gtm.js?id=GTM-KJDT3TMwww.googletagmanager.com/gtm.js?id=... https://www.googletagmanager.com/gtm.js?id=GTM-KJDT3TM — 200 — 145.1 KiB — 245 ms — h2https://images.rtl.fr/~c/600v790/rtl/www/1775931-le-grand-recit-andre-dussollier-et-isabelle-choquet.jpgimages.rtl.fr/~c/600v790/rtl/www/17... https://images.rtl.fr/~c/600v790/rtl/www/1775931-le-grand-recit-andre-dussollier-et-isabelle-choquet.jpg — 200 — 102.2 KiB — 2.7 s — h2https://images.rtl.fr/~c/790v790/rtl/www/1776662-le-grand-recit-andre-dussollier-et-isabelle-choquet.jpgimages.rtl.fr/~c/790v790/rtl/www/17... https://images.rtl.fr/~c/790v790/rtl/www/1776662-le-grand-recit-andre-dussollier-et-isabelle-choquet.jpg — 200 — 126.3 KiB — 2.9 s — h2https://images.rtl.fr/~c/600v790/rtl/www/1776173-jean-alphonse-richard-l-heure-du-crime.jpgimages.rtl.fr/~c/600v790/rtl/www/17... https://images.rtl.fr/~c/600v790/rtl/www/1776173-jean-alphonse-richard-l-heure-du-crime.jpg — 200 — 81.3 KiB — 2.5 s — h2https://images.rtl.fr/~c/790v790/rtl/www/1776655-jean-alphonse-richard-l-heure-du-crime.jpgimages.rtl.fr/~c/790v790/rtl/www/17... https://images.rtl.fr/~c/790v790/rtl/www/1776655-jean-alphonse-richard-l-heure-du-crime.jpg — 200 — 99.9 KiB — 2.7 s — h2data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8IQkAAa8A48opxD0AA…data:image/png;base64,iVBORw0KGgoAA... data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8IQkAAa8A48opxD0AA… — 200 — 0 B — 0 ms — datahttps://images.rtl.fr/~c/600v790/rtl/www/1776350-grosses-tetes-laurent-ruquier.jpgimages.rtl.fr/~c/600v790/rtl/www/17... https://images.rtl.fr/~c/600v790/rtl/www/1776350-grosses-tetes-laurent-ruquier.jpg — 200 — 97.9 KiB — 2.7 s — h2https://images.rtl.fr/~c/790v790/rtl/www/1776348-grosses-tetes-laurent-ruquier.jpgimages.rtl.fr/~c/790v790/rtl/www/17... https://images.rtl.fr/~c/790v790/rtl/www/1776348-grosses-tetes-laurent-ruquier.jpg — 200 — 121.7 KiB — 2.9 s — h2https://static.rtl.fr/versions/www/7.0.397/img/util/grille/grille_rtl.jpgstatic.rtl.fr/versions/www/7.0.397/... https://static.rtl.fr/versions/www/7.0.397/img/util/grille/grille_rtl.jpg — 200 — 30.8 KiB — 981 ms — h2data:font/x-font-woff;charset=utf-8;base64,d09GRgABAAAAAC/wAAsAAAAAVXwAAQAAAAAAAAAAAAAAAAAAAAAAAAAA…data:font/x-font-woff;charset=utf-8... data:font/x-font-woff;charset=utf-8;base64,d09GRgABAAAAAC/wAAsAAAAAVXwAAQAAAAAAAAAAAAAAAAAAAAAAAAAA… — 200 — 12.0 KiB — 91 ms — datahttps://static.rtl.fr/versions/www/7.0.397/fonts/Roboto/roboto-v27-latin-regular.woffstatic.rtl.fr/versions/www/7.0.397/... https://static.rtl.fr/versions/www/7.0.397/fonts/Roboto/roboto-v27-latin-regular.woff — 200 — 20.1 KiB — 1.1 s — h2https://static.rtl.fr/versions/www/7.0.397/fonts/Roboto/roboto-v27-latin-700.woffstatic.rtl.fr/versions/www/7.0.397/... https://static.rtl.fr/versions/www/7.0.397/fonts/Roboto/roboto-v27-latin-700.woff — 200 — 20.1 KiB — 886 ms — h2https://static.rtl.fr/versions/www/7.0.397/fonts/Roboto/roboto-v27-latin-500.woffstatic.rtl.fr/versions/www/7.0.397/... https://static.rtl.fr/versions/www/7.0.397/fonts/Roboto/roboto-v27-latin-500.woff — 200 — 20.3 KiB — 1.3 s — h2https://static.rtl.fr/versions/www/7.0.397/fonts/Roboto/roboto-v27-latin-100.woffstatic.rtl.fr/versions/www/7.0.397/... https://static.rtl.fr/versions/www/7.0.397/fonts/Roboto/roboto-v27-latin-100.woff — 200 — 20.2 KiB — 1.1 s — h2https://static.rtl.fr/versions/www/7.0.397/rtl.jsstatic.rtl.fr/versions/www/7.0.397/... https://static.rtl.fr/versions/www/7.0.397/rtl.js — 200 — 947.1 KiB — 2.4 s — h2https://consent.rtl.fr/4801407c-7ff1-4aed-aa34-71b05434f911/loader.js?target_type=notice&target=Q292GtrVconsent.rtl.fr/4801407c-7ff1-4aed-a... https://consent.rtl.fr/4801407c-7ff1-4aed-aa34-71b05434f911/loader.js?target_type=notice&target=Q292GtrV — 200 — 35.5 KiB — 725 ms — h2https://tag.aticdn.net/piano-analytics.jstag.aticdn.net/piano-analytics.js https://tag.aticdn.net/piano-analytics.js — 200 — 26.7 KiB — 147 ms — h2https://l.rtl.fr/sdk.jsl.rtl.fr/sdk.js https://l.rtl.fr/sdk.js — 200 — 1.2 KiB — 232 ms — h2https://static.gimii.fr/gimii.jsstatic.gimii.fr/gimii.js https://static.gimii.fr/gimii.js — 200 — 2.1 KiB — 159 ms — h2https://api.gimii.fr/servicesapi.gimii.fr/services https://api.gimii.fr/services — 200 — 740 B — 30 ms — h3https://static.gimii.fr/sdk-2.9.0.jsstatic.gimii.fr/sdk-2.9.0.js https://static.gimii.fr/sdk-2.9.0.js — 200 — 33.4 KiB — 26 ms — h2https://images.rtl.fr/~c/600v790/rtl/www/1769730-jerome-florin-1250x1800.jpgimages.rtl.fr/~c/600v790/rtl/www/17... https://images.rtl.fr/~c/600v790/rtl/www/1769730-jerome-florin-1250x1800.jpg — 200 — 100.7 KiB — 1.9 s — h2https://images.rtl.fr/~c/790v790/rtl/www/1769731-jerome-florin-1400x1400.jpgimages.rtl.fr/~c/790v790/rtl/www/17... https://images.rtl.fr/~c/790v790/rtl/www/1769731-jerome-florin-1400x1400.jpg — 200 — 127.4 KiB — 2.1 s — h2https://images.rtl.fr/~c/600v790/rtl/www/1771082-thomas-sotto.jpgimages.rtl.fr/~c/600v790/rtl/www/17... https://images.rtl.fr/~c/600v790/rtl/www/1771082-thomas-sotto.jpg — 200 — 91.4 KiB — 1.9 s — h2https://images.rtl.fr/~c/790v790/rtl/www/1776671-thomas-sotto.jpgimages.rtl.fr/~c/790v790/rtl/www/17... https://images.rtl.fr/~c/790v790/rtl/www/1776671-thomas-sotto.jpg — 200 — 113.1 KiB — 1.9 s — h2https://images.rtl.fr/~c/600v790/rtl/www/1776160-un-jour-une-vie-faustine-bollaert.jpgimages.rtl.fr/~c/600v790/rtl/www/17... https://images.rtl.fr/~c/600v790/rtl/www/1776160-un-jour-une-vie-faustine-bollaert.jpg — 200 — 121.8 KiB — 2.3 s — h2https://images.rtl.fr/~c/790v790/rtl/www/1776645-un-jour-une-vie-faustine-bollaert.jpgimages.rtl.fr/~c/790v790/rtl/www/17... https://images.rtl.fr/~c/790v790/rtl/www/1776645-un-jour-une-vie-faustine-bollaert.jpg — 200 — 146.2 KiB — 2.5 s — h2https://images.rtl.fr/rtl/www/1394504-ad-sumo.pngimages.rtl.fr/rtl/www/1394504-ad-su... https://images.rtl.fr/rtl/www/1394504-ad-sumo.png — 200 — 4.5 KiB — 1.9 s — h2
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s FCP 3.7 s LCP 16.8 shttps://rtl.fr// https://rtl.fr/ — 301 — 39 B — 759 ms — h2https://www.rtl.fr/www.rtl.fr/ https://www.rtl.fr/ — 200 — 223.8 KiB — 443 ms — h2https://www.googletagmanager.com/gtm.js?id=GTM-KJDT3TMwww.googletagmanager.com/gtm.js?id=... https://www.googletagmanager.com/gtm.js?id=GTM-KJDT3TM — 200 — 145.1 KiB — 245 ms — h2https://images.rtl.fr/~c/600v790/rtl/www/1775931-le-grand-recit-andre-dussollier-et-isabelle-choquet.jpgimages.rtl.fr/~c/600v790/rtl/www/17... https://images.rtl.fr/~c/600v790/rtl/www/1775931-le-grand-recit-andre-dussollier-et-isabelle-choquet.jpg — 200 — 102.2 KiB — 2.7 s — h2https://images.rtl.fr/~c/790v790/rtl/www/1776662-le-grand-recit-andre-dussollier-et-isabelle-choquet.jpgimages.rtl.fr/~c/790v790/rtl/www/17... https://images.rtl.fr/~c/790v790/rtl/www/1776662-le-grand-recit-andre-dussollier-et-isabelle-choquet.jpg — 200 — 126.3 KiB — 2.9 s — h2https://images.rtl.fr/~c/600v790/rtl/www/1776173-jean-alphonse-richard-l-heure-du-crime.jpgimages.rtl.fr/~c/600v790/rtl/www/17... https://images.rtl.fr/~c/600v790/rtl/www/1776173-jean-alphonse-richard-l-heure-du-crime.jpg — 200 — 81.3 KiB — 2.5 s — h2https://images.rtl.fr/~c/790v790/rtl/www/1776655-jean-alphonse-richard-l-heure-du-crime.jpgimages.rtl.fr/~c/790v790/rtl/www/17... https://images.rtl.fr/~c/790v790/rtl/www/1776655-jean-alphonse-richard-l-heure-du-crime.jpg — 200 — 99.9 KiB — 2.7 s — h2data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8IQkAAa8A48opxD0AA…data:image/png;base64,iVBORw0KGgoAA... data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8IQkAAa8A48opxD0AA… — 200 — 0 B — 0 ms — datahttps://images.rtl.fr/~c/600v790/rtl/www/1776350-grosses-tetes-laurent-ruquier.jpgimages.rtl.fr/~c/600v790/rtl/www/17... https://images.rtl.fr/~c/600v790/rtl/www/1776350-grosses-tetes-laurent-ruquier.jpg — 200 — 97.9 KiB — 2.7 s — 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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 8635ms · 1500KB · €94/mo
static.rtl.fr
Other
Costly
Execution 3148ms
Transfer 947 KB
Unused 59%
Monthly Cost €34/mo
www.rtl.fr
Other
Costly
Execution 3067ms
Transfer 224 KB
Monthly Cost €33/mo
Unattributable
Other
Costly
Execution 922ms
Transfer 0 KB
Monthly Cost €10/mo
Google Tag Manager
Tag Manager
Costly
Execution 763ms
Transfer 145 KB
Unused 45%
Monthly Cost €8/mo
consent.rtl.fr
Other
Costly
Execution 421ms
Transfer 102 KB
Unused 44%
Monthly Cost €5/mo
consent.rtl.fr
Other
Costly
Execution 241ms
Transfer 56 KB
Monthly Cost €3/mo
tag.aticdn.net
Other
Optional
Execution 73ms
Transfer 27 KB
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • static.rtl.fr adds 3148ms and costs ~€34/month
  • www.rtl.fr adds 3067ms and costs ~€33/month
  • Unattributable adds 922ms and costs ~€10/month
  • Google Tag Manager adds 763ms and costs ~€8/month
  • consent.rtl.fr adds 421ms and costs ~€5/month
  • consent.rtl.fr adds 241ms and costs ~€3/month

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

static.rtl.fr takes 3148ms 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

59% of static.rtl.fr'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

www.rtl.fr takes 3067ms 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

Unattributable takes 922ms 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

Google Tag Manager takes 763ms 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

consent.rtl.fr takes 421ms 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

consent.rtl.fr takes 241ms 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

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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