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https://rtl.fr

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
70
GRADE
C
FIX
6
REVIEW
2
PASS
5
INFO
2

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

Mobile Desktop
59
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.

1.37 s

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

3.39 s

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

253 ms

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

0.062

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

3.54 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.

5.13 s

Page Load Progression

1.0 s
2.1 s
3.1 s
4.2 s
5.2 s
6.2 s
7.3 s
8.3 s
Checks
15
5 PASS 2 REVIEW 6 FIX
D
Page Weight Budget
Action
2.5 MB transferred, 48 requests
FIX
2.5 MB transferred, 48 requests
Warning::
Page weighs 7.8 MB (2.5 MB transferred)
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 0.53 g CO2 per page load
2.5 MB / 2.4 MB budget
2.5 MB transferred
48 requests
0.53 g CO2 per page load
JavaScript 1.3 MiB 52%
Images 933.0 KiB 36%
HTML 223.8 KiB 9%
Fonts 92.7 KiB 4%
Other 1.4 KiB 0%
Other 740 B 0%
Other 646 B 0%
Other 589 B 0%
0 2.4 MB 4.9 MB
Over 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

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 (2.5 MiB of 2.5 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
JS Execution Cost
Action
2138ms total JS execution
FIX
2138ms total JS execution
Warning::
https://www.rtl.fr/: 793ms CPU time
Warning::
https://static.rtl.fr/versions/www/7.0.397/rtl.js: 763ms CPU time
Info::
Unattributable: 220ms CPU time
Info::
https://www.googletagmanager.com/gtm.js?id=GTM-KJD...: 203ms CPU time
Info::
https://consent.rtl.fr/sdk/d4911c3d5b4b9a80b40e051...: 94ms CPU time
Warning::
Third-party scripts: 2138ms (100% of total)

Main Thread Breakdown

Script Evaluation 36% Other 24% Style & Layout 19% Script Parsing & Compilation 9% Rendering 7% Parse HTML & CSS 4%
ScriptTotalScriptingParse/CompileParty
https://www.rtl.fr/793ms7ms1ms3rd
https://static.rtl.fr/versions/www/7.0.397/rtl.js763ms439ms137ms3rd
Unattributable220ms13ms0ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-KJDT3TM203ms173ms18ms3rd
https://consent.rtl.fr/sdk/d4911c3d5b4b9a80b40e05167f53d1b1e8da81f3/modern/sdk.d4911c3d5b4b9a80b40e05167f53d1b1e8da81f3.js94ms75ms13ms3rd
https://consent.rtl.fr/sdk/d4911c3d5b4b9a80b40e05167f53d1b1e8da81f3/modern/ui-web-fr-web.d4911c3d5b4b9a80b40e05167f53d1b1e8da81f3.js64ms40ms9ms3rd
F
JS Bundles
Action
9 scripts, 692 KB unused
FIX
9 scripts, 692 KB unused
Warning::
https://static.rtl.fr/versions/www/7.0.397/rtl.js: 562 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: 692 KB
692 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://static.rtl.fr/versions/www/7.0.397/rtl.js947 KB562 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 · 2.5 MB · 692 KB savings available
FIX
48 resources · 2.5 MB · 692 KB savings available
Warning::
Page weight 1.5 MB over 1MB target
Got: 2.5 MB Expected: ≤ 1 MB
Info::
~692 KB of savings available
Warning::
47 third-party resources (100% of weight)
Info::
3 resources over 200KB
48 resources · 2.5 MiB · 47 third-party 1.5 MiB over 1MB target
JavaScript 52% · 1.3 MiB
Image 36% · 934.3 KiB
Document 9% · 223.8 KiB
Font 4% · 92.7 KiB
Other 0% · 2.0 KiB

~691.6 KiB of savings available

Remove unused JavaScript: 691.6 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
Image Optimization
26 images, 0 KB saveable
REVIEW
26 images, 0 KB saveable
Info::
All images are well-optimized
26 images 933 KB
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 1.0 s 2.0 s 3.0 s FCP 1.4 s LCP 3.4 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 — 99 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 — 20.2 KiB — 1.3 s — 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 — 878 ms — 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 99 ms
Start 1.2 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 1.3 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 1.3 s
Start 1.3 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 878 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-100.woff woff swap
Size 20 KB
Load time 1.1 s
Start 1.3 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
Network Waterfall
48 requests over 6011ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s FCP 1.4 s LCP 3.4 shttps://rtl.fr// https://rtl.fr/ — 301 — 39 B — 835 ms — h2https://www.rtl.fr/www.rtl.fr/ https://www.rtl.fr/ — 200 — 223.8 KiB — 226 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 — 263 ms — h2https://images.rtl.fr/~c/300v395/rtl/www/1775931-le-grand-recit-andre-dussollier-et-isabelle-choquet.jpgimages.rtl.fr/~c/300v395/rtl/www/17... https://images.rtl.fr/~c/300v395/rtl/www/1775931-le-grand-recit-andre-dussollier-et-isabelle-choquet.jpg — 200 — 33.2 KiB — 1.4 s — h2https://images.rtl.fr/~c/395v395/rtl/www/1776662-le-grand-recit-andre-dussollier-et-isabelle-choquet.jpgimages.rtl.fr/~c/395v395/rtl/www/17... https://images.rtl.fr/~c/395v395/rtl/www/1776662-le-grand-recit-andre-dussollier-et-isabelle-choquet.jpg — 200 — 46.7 KiB — 1.4 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/300v395/rtl/www/1776173-jean-alphonse-richard-l-heure-du-crime.jpgimages.rtl.fr/~c/300v395/rtl/www/17... https://images.rtl.fr/~c/300v395/rtl/www/1776173-jean-alphonse-richard-l-heure-du-crime.jpg — 200 — 27.7 KiB — 1.4 s — h2https://images.rtl.fr/~c/395v395/rtl/www/1776655-jean-alphonse-richard-l-heure-du-crime.jpgimages.rtl.fr/~c/395v395/rtl/www/17... https://images.rtl.fr/~c/395v395/rtl/www/1776655-jean-alphonse-richard-l-heure-du-crime.jpg — 200 — 35.8 KiB — 1.4 s — h2https://images.rtl.fr/~c/300v395/rtl/www/1776350-grosses-tetes-laurent-ruquier.jpgimages.rtl.fr/~c/300v395/rtl/www/17... https://images.rtl.fr/~c/300v395/rtl/www/1776350-grosses-tetes-laurent-ruquier.jpg — 200 — 36.8 KiB — 1.4 s — h2https://images.rtl.fr/~c/395v395/rtl/www/1776348-grosses-tetes-laurent-ruquier.jpgimages.rtl.fr/~c/395v395/rtl/www/17... https://images.rtl.fr/~c/395v395/rtl/www/1776348-grosses-tetes-laurent-ruquier.jpg — 200 — 46.1 KiB — 1.6 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 — 982 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 — 99 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 — 20.2 KiB — 1.3 s — 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 — 878 ms — 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 — 2.6 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 — 621 ms — h2https://tag.aticdn.net/piano-analytics.jstag.aticdn.net/piano-analytics.js https://tag.aticdn.net/piano-analytics.js — 200 — 26.6 KiB — 19 ms — h2https://l.rtl.fr/sdk.jsl.rtl.fr/sdk.js https://l.rtl.fr/sdk.js — 200 — 1.2 KiB — 226 ms — h2https://static.gimii.fr/gimii.jsstatic.gimii.fr/gimii.js https://static.gimii.fr/gimii.js — 200 — 2.1 KiB — 33 ms — h2https://api.gimii.fr/servicesapi.gimii.fr/services https://api.gimii.fr/services — 200 — 740 B — 34 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 — 33.5 KiB — 22 ms — h2https://images.rtl.fr/~c/300v395/rtl/www/1769730-jerome-florin-1250x1800.jpgimages.rtl.fr/~c/300v395/rtl/www/17... https://images.rtl.fr/~c/300v395/rtl/www/1769730-jerome-florin-1250x1800.jpg — 200 — 34.6 KiB — 608 ms — h2https://images.rtl.fr/~c/395v395/rtl/www/1769731-jerome-florin-1400x1400.jpgimages.rtl.fr/~c/395v395/rtl/www/17... https://images.rtl.fr/~c/395v395/rtl/www/1769731-jerome-florin-1400x1400.jpg — 200 — 45.4 KiB — 609 ms — h2https://images.rtl.fr/~c/300v395/rtl/www/1771082-thomas-sotto.jpgimages.rtl.fr/~c/300v395/rtl/www/17... https://images.rtl.fr/~c/300v395/rtl/www/1771082-thomas-sotto.jpg — 200 — 32.6 KiB — 607 ms — h2https://images.rtl.fr/~c/395v395/rtl/www/1776671-thomas-sotto.jpgimages.rtl.fr/~c/395v395/rtl/www/17... https://images.rtl.fr/~c/395v395/rtl/www/1776671-thomas-sotto.jpg — 200 — 41.3 KiB — 609 ms — h2https://images.rtl.fr/~c/300v395/rtl/www/1776160-un-jour-une-vie-faustine-bollaert.jpgimages.rtl.fr/~c/300v395/rtl/www/17... https://images.rtl.fr/~c/300v395/rtl/www/1776160-un-jour-une-vie-faustine-bollaert.jpg — 200 — 43.5 KiB — 795 ms — h2https://images.rtl.fr/~c/395v395/rtl/www/1776645-un-jour-une-vie-faustine-bollaert.jpgimages.rtl.fr/~c/395v395/rtl/www/17... https://images.rtl.fr/~c/395v395/rtl/www/1776645-un-jour-une-vie-faustine-bollaert.jpg — 200 — 53.7 KiB — 800 ms — 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 — 798 ms — h2
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s FCP 1.4 s LCP 3.4 shttps://rtl.fr// https://rtl.fr/ — 301 — 39 B — 835 ms — h2https://www.rtl.fr/www.rtl.fr/ https://www.rtl.fr/ — 200 — 223.8 KiB — 226 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 — 263 ms — h2https://images.rtl.fr/~c/300v395/rtl/www/1775931-le-grand-recit-andre-dussollier-et-isabelle-choquet.jpgimages.rtl.fr/~c/300v395/rtl/www/17... https://images.rtl.fr/~c/300v395/rtl/www/1775931-le-grand-recit-andre-dussollier-et-isabelle-choquet.jpg — 200 — 33.2 KiB — 1.4 s — h2https://images.rtl.fr/~c/395v395/rtl/www/1776662-le-grand-recit-andre-dussollier-et-isabelle-choquet.jpgimages.rtl.fr/~c/395v395/rtl/www/17... https://images.rtl.fr/~c/395v395/rtl/www/1776662-le-grand-recit-andre-dussollier-et-isabelle-choquet.jpg — 200 — 46.7 KiB — 1.4 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/300v395/rtl/www/1776173-jean-alphonse-richard-l-heure-du-crime.jpgimages.rtl.fr/~c/300v395/rtl/www/17... https://images.rtl.fr/~c/300v395/rtl/www/1776173-jean-alphonse-richard-l-heure-du-crime.jpg — 200 — 27.7 KiB — 1.4 s — h2https://images.rtl.fr/~c/395v395/rtl/www/1776655-jean-alphonse-richard-l-heure-du-crime.jpgimages.rtl.fr/~c/395v395/rtl/www/17... https://images.rtl.fr/~c/395v395/rtl/www/1776655-jean-alphonse-richard-l-heure-du-crime.jpg — 200 — 35.8 KiB — 1.4 s — h2https://images.rtl.fr/~c/300v395/rtl/www/1776350-grosses-tetes-laurent-ruquier.jpgimages.rtl.fr/~c/300v395/rtl/www/17... https://images.rtl.fr/~c/300v395/rtl/www/1776350-grosses-tetes-laurent-ruquier.jpg — 200 — 36.8 KiB — 1.4 s — h2https://images.rtl.fr/~c/395v395/rtl/www/1776348-grosses-tetes-laurent-ruquier.jpgimages.rtl.fr/~c/395v395/rtl/www/17... https://images.rtl.fr/~c/395v395/rtl/www/1776348-grosses-tetes-laurent-ruquier.jpg — 200 — 46.1 KiB — 1.6 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 — 982 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 — 99 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 — 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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 2138ms · 1473KB · €23/mo
www.rtl.fr
Other
Costly
Execution 793ms
Transfer 224 KB
Monthly Cost €9/mo
static.rtl.fr
Other
Costly
Execution 763ms
Transfer 947 KB
Unused 59%
Monthly Cost €8/mo
Unattributable
Other
Costly
Execution 220ms
Transfer 0 KB
Monthly Cost €2/mo
Google Tag Manager
Tag Manager
Costly
Execution 203ms
Transfer 145 KB
Unused 45%
Monthly Cost €2/mo
consent.rtl.fr
Other
Optional
Execution 94ms
Transfer 102 KB
Unused 44%
Monthly Cost €1/mo
consent.rtl.fr
Other
Optional
Execution 64ms
Transfer 56 KB
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • www.rtl.fr adds 793ms and costs ~€9/month
  • static.rtl.fr adds 763ms and costs ~€8/month
  • Unattributable adds 220ms and costs ~€2/month
  • Google Tag Manager adds 203ms and costs ~€2/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

www.rtl.fr takes 793ms 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

static.rtl.fr 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

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

Unattributable takes 220ms 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 203ms 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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