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https://france.tv

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
81
GRADE
B
FIX
4
REVIEW
3
PASS
8
INFO
2

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

Mobile Desktop
0
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
84
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.
100
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.

3.64 s

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

0 ms

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.

0.020

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

4.06 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.

0 ms

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
17
8 PASS 3 REVIEW 4 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 (1.8 MiB of 1.8 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Execution Cost
Action
9098ms total JS execution
FIX
9098ms total JS execution
Warning::
https://www.france.tv/: 3609ms CPU time
Warning::
https://www.france.tv/_next/static/chunks/0-kkveyz...: 1869ms CPU time
Warning::
Unattributable: 1525ms CPU time
Warning::
https://www.france.tv/_next/static/chunks/0j15lq9f...: 619ms CPU time
Warning::
https://sdk.privacy-center.org/sdk/22ecd6bfac93de6...: 470ms CPU time
Warning::
Third-party scripts: 9098ms (100% of total)

Main Thread Breakdown

Script Evaluation 40% Other 20% Style & Layout 20% Rendering 7% Script Parsing & Compilation 6% Parse HTML & CSS 5%
ScriptTotalScriptingParse/CompileParty
https://www.france.tv/3609ms154ms143ms3rd
https://www.france.tv/_next/static/chunks/0-kkveyz.tao8.js1869ms1537ms38ms3rd
Unattributable1525ms352ms0ms3rd
https://www.france.tv/_next/static/chunks/0j15lq9f6jk8_.js619ms617ms2ms3rd
https://sdk.privacy-center.org/sdk/22ecd6bfac93de604efec0b75b2c796ee1675f92/modern/sdk.22ecd6bfac93de604efec0b75b2c796ee1675f92.js470ms404ms64ms3rd
https://sdk.privacy-center.org/sdk/22ecd6bfac93de604efec0b75b2c796ee1675f92/modern/ui-web-fr-web.22ecd6bfac93de604efec0b75b2c796ee1675f92.js402ms223ms45ms3rd
https://utiq.france.tv/utiqLoader.js355ms268ms23ms3rd
https://www.france.tv/_next/static/chunks/02d395-i3s0zg.js151ms7ms22ms3rd
https://tag.aticdn.net/piano-analytics.js97ms81ms14ms3rd
D
Page Weight Inventory
Action
75 resources · 1.8 MB · 0 KB savings available
FIX
75 resources · 1.8 MB · 0 KB savings available
Warning::
Page weight 797 KB over 1MB target
Got: 1.8 MB Expected: ≤ 1 MB
Warning::
74 third-party resources (100% of weight)
Info::
1 resources over 200KB
75 resources · 1.8 MiB · 74 third-party 797.2 KiB over 1MB target
Image 44% · 794.1 KiB
JavaScript 36% · 651.8 KiB
Document 14% · 257.5 KiB
Font 4% · 72.7 KiB
CSS 2% · 42.7 KiB
Other 0% · 2.5 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.

C
Page Weight Budget
Action
1.8 MB transferred, 75 requests
REVIEW
1.8 MB transferred, 75 requests
Info::
Page weighs 5.2 MB (1.8 MB transferred)
Warning::
JavaScript is 652 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 652 KB
Info::
75 HTTP requests
Info::
Estimated 0.37 g CO2 per page load
1.8 MB / 2.4 MB budget
1.8 MB transferred
75 requests
0.37 g CO2 per page load
Images 735.5 KiB 40%
JavaScript 651.8 KiB 36%
HTML 257.5 KiB 14%
Fonts 72.7 KiB 4%
Other 58.8 KiB 3%
CSS 42.7 KiB 2%
Other 1.2 KiB 0%
Other 652 B 0%
Other 467 B 0%
0 2.4 MB 4.9 MB
Approaching limit

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

B
Image Optimization
23 images, 0 KB saveable
REVIEW
23 images, 0 KB saveable
Info::
All images are well-optimized
23 images 736 KB
0 oversized -0 KB
7 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
2 fonts (73 KB)
PASS
2 fonts (73 KB)
Info::
2 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

2

73 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 1.0 s 2.0 s 3.0 s FCP 3.6 shttps://www.france.tv/_next/static/media/FranceTVBrown-Bold.171e8j_kmufpu.woff2FranceTVBrown-Bold.171e... https://www.france.tv/_next/static/media/FranceTVBrown-Bold.171e8j_kmufpu.woff2 — 36.5 KiB — 28 ms — font-display: swaphttps://www.france.tv/_next/static/media/FranceTVBrown-Regular.186s_hwolcixm.woff2FranceTVBrown-Regular.1... https://www.france.tv/_next/static/media/FranceTVBrown-Regular.186s_hwolcixm.woff2 — 36.2 KiB — 40 ms — font-display: swap
FranceTVBrown-Bold.171e... woff2 swap
Size 37 KB
Load time 28 ms
Start 297 ms
Risk FOUT — text flashes from fallback to web font
FranceTVBrown-Regular.1... woff2 swap
Size 36 KB
Load time 40 ms
Start 299 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+
JS Bundles
35 scripts, 0 KB unused
PASS
35 scripts, 0 KB unused
0 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://utiq.france.tv/utiqLoader.js41 KB—✓3rd
https://www.france.tv/_next/static/chunks/0j15lq9f6jk8_.js3 KB—✓3rd
https://www.france.tv/_next/static/chunks/0y-1z9_8uwr1o.js9 KB—✓3rd
https://www.france.tv/_next/static/chunks/0chjs8n~o0qf9.js9 KB—✓3rd
https://www.france.tv/_next/static/chunks/0-kkveyz.tao8.js69 KB—✓3rd
https://www.france.tv/_next/static/chunks/13~l3v61a953~.js29 KB—✓3rd
https://www.france.tv/_next/static/chunks/10k4zy97geweu.js9 KB—✓3rd
https://www.france.tv/_next/static/chunks/turbopack-11bj44dfjrd91.js4 KB—✓3rd
https://www.france.tv/_next/static/chunks/0eqw72mh9jazy.js20 KB—✓3rd
https://www.france.tv/_next/static/chunks/0jl~-gmw0osqz.js6 KB—✓3rd
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
4 hints, 0 missing preconnects
PASS
4 hints, 0 missing preconnects
Info::
Page uses 4 resource hint(s)

Current Resource Hints

preconnect
1
preload
3
dns-prefetch
—
prefetch
—

4 resource hints configured

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
75 requests over 2435ms
INFO
0 ms 1.0 s 2.0 s 3.0 s FCP 3.6 shttps://france.tv// https://france.tv/ — 301 — 73 B — 16 ms — h2https://www.france.tv/www.france.tv/ https://www.france.tv/ — 200 — 257.5 KiB — 38 ms — h2https://www.france.tv/_next/static/chunks/0gb7-n17f5c2e.csswww.france.tv/_next/static/chunks/0... https://www.france.tv/_next/static/chunks/0gb7-n17f5c2e.css — 200 — 2.1 KiB — 21 ms — h2https://www.france.tv/_next/static/chunks/0c-wc7.t4byup.csswww.france.tv/_next/static/chunks/0... https://www.france.tv/_next/static/chunks/0c-wc7.t4byup.css — 200 — 39.7 KiB — 27 ms — h2https://www.france.tv/_next/static/chunks/08u.pijhxcm-0.csswww.france.tv/_next/static/chunks/0... https://www.france.tv/_next/static/chunks/08u.pijhxcm-0.css — 200 — 925 B — 25 ms — h2https://www.france.tv/images/fallback-16_9.svgwww.france.tv/images/fallback-16_9.... https://www.france.tv/images/fallback-16_9.svg — 200 — 798 B — 19 ms — h2https://utiq.france.tv/utiqLoader.jsutiq.france.tv/utiqLoader.js https://utiq.france.tv/utiqLoader.js — 200 — 40.8 KiB — 345 ms — http/1.1https://medias.france.tv/7rJ_N-XbvnTinlHy-WwTSW8grq0/970x0/filters:quality(85):format(webp)/h/1/m/php5mim1h.jpgmedias.france.tv/7rJ_N-XbvnTinlHy-W... https://medias.france.tv/7rJ_N-XbvnTinlHy-WwTSW8grq0/970x0/filters:quality(85):format(webp)/h/1/m/php5mim1h.jpg — 200 — 17.8 KiB — 22 ms — h2https://medias.france.tv/ph1tOq_02-YWpzf4XS9KHgJ9LLM/970x0/filters:quality(85):format(webp)/v/v/m/phpmeimvv.jpgmedias.france.tv/ph1tOq_02-YWpzf4XS... https://medias.france.tv/ph1tOq_02-YWpzf4XS9KHgJ9LLM/970x0/filters:quality(85):format(webp)/v/v/m/phpmeimvv.jpg — 200 — 152.6 KiB — 43 ms — h2https://medias.france.tv/C5zllAISJYRDsvWmaZGJAZTbsTo/970x0/filters:quality(85):format(webp)/i/7/9/phpodo97i.jpgmedias.france.tv/C5zllAISJYRDsvWmaZ... https://medias.france.tv/C5zllAISJYRDsvWmaZGJAZTbsTo/970x0/filters:quality(85):format(webp)/i/7/9/phpodo97i.jpg — 200 — 112.3 KiB — 44 ms — h2https://www.france.tv/_next/static/chunks/0j15lq9f6jk8_.jswww.france.tv/_next/static/chunks/0... https://www.france.tv/_next/static/chunks/0j15lq9f6jk8_.js — 200 — 2.5 KiB — 24 ms — h2https://www.france.tv/_next/static/chunks/0y-1z9_8uwr1o.jswww.france.tv/_next/static/chunks/0... https://www.france.tv/_next/static/chunks/0y-1z9_8uwr1o.js — 200 — 8.9 KiB — 44 ms — h2https://www.france.tv/_next/static/chunks/0chjs8n~o0qf9.jswww.france.tv/_next/static/chunks/0... https://www.france.tv/_next/static/chunks/0chjs8n~o0qf9.js — 200 — 9.1 KiB — 48 ms — h2https://www.france.tv/_next/static/chunks/0-kkveyz.tao8.jswww.france.tv/_next/static/chunks/0... https://www.france.tv/_next/static/chunks/0-kkveyz.tao8.js — 200 — 69.4 KiB — 63 ms — h2https://www.france.tv/_next/static/chunks/13~l3v61a953~.jswww.france.tv/_next/static/chunks/1... https://www.france.tv/_next/static/chunks/13~l3v61a953~.js — 200 — 28.6 KiB — 61 ms — h2https://www.france.tv/_next/static/chunks/10k4zy97geweu.jswww.france.tv/_next/static/chunks/1... https://www.france.tv/_next/static/chunks/10k4zy97geweu.js — 200 — 9.3 KiB — 60 ms — h2https://www.france.tv/_next/static/chunks/turbopack-11bj44dfjrd91.jswww.france.tv/_next/static/chunks/t... https://www.france.tv/_next/static/chunks/turbopack-11bj44dfjrd91.js — 200 — 4.4 KiB — 15 ms — h2https://www.france.tv/_next/static/chunks/0eqw72mh9jazy.jswww.france.tv/_next/static/chunks/0... https://www.france.tv/_next/static/chunks/0eqw72mh9jazy.js — 200 — 19.7 KiB — 18 ms — h2https://www.france.tv/_next/static/chunks/0jl~-gmw0osqz.jswww.france.tv/_next/static/chunks/0... https://www.france.tv/_next/static/chunks/0jl~-gmw0osqz.js — 200 — 6.4 KiB — 33 ms — h2https://www.france.tv/_next/static/chunks/0x3fl6s14yhet.jswww.france.tv/_next/static/chunks/0... https://www.france.tv/_next/static/chunks/0x3fl6s14yhet.js — 200 — 5.7 KiB — 36 ms — h2https://www.france.tv/_next/static/chunks/0sdnhwmcyo4po.jswww.france.tv/_next/static/chunks/0... https://www.france.tv/_next/static/chunks/0sdnhwmcyo4po.js — 200 — 10.2 KiB — 28 ms — h2https://www.france.tv/_next/static/chunks/0twkz4.ss700c.jswww.france.tv/_next/static/chunks/0... https://www.france.tv/_next/static/chunks/0twkz4.ss700c.js — 200 — 19.9 KiB — 15 ms — h2https://www.france.tv/_next/static/chunks/0tveo8az6nwr~.jswww.france.tv/_next/static/chunks/0... https://www.france.tv/_next/static/chunks/0tveo8az6nwr~.js — 200 — 13.4 KiB — 34 ms — h2https://www.france.tv/_next/static/chunks/05oatm~ix84r8.jswww.france.tv/_next/static/chunks/0... https://www.france.tv/_next/static/chunks/05oatm~ix84r8.js — 200 — 11.9 KiB — 25 ms — h2https://www.france.tv/_next/static/chunks/040bg66a0mnyl.jswww.france.tv/_next/static/chunks/0... https://www.france.tv/_next/static/chunks/040bg66a0mnyl.js — 200 — 8.8 KiB — 23 ms — h2https://www.france.tv/_next/static/chunks/0nk8pxu-ajzf~.jswww.france.tv/_next/static/chunks/0... https://www.france.tv/_next/static/chunks/0nk8pxu-ajzf~.js — 200 — 10.8 KiB — 18 ms — h2https://www.france.tv/_next/static/chunks/0~zq..7zd0otv.jswww.france.tv/_next/static/chunks/0... https://www.france.tv/_next/static/chunks/0~zq..7zd0otv.js — 200 — 12.9 KiB — 60 ms — h2https://www.france.tv/_next/static/chunks/0erot4v6n0w-y.jswww.france.tv/_next/static/chunks/0... https://www.france.tv/_next/static/chunks/0erot4v6n0w-y.js — 200 — 3.2 KiB — 63 ms — h2https://www.france.tv/_next/static/chunks/0q74wx7bg383g.jswww.france.tv/_next/static/chunks/0... https://www.france.tv/_next/static/chunks/0q74wx7bg383g.js — 200 — 8.3 KiB — 66 ms — h2https://www.france.tv/_next/static/chunks/0nbx.0b0w2edm.jswww.france.tv/_next/static/chunks/0... https://www.france.tv/_next/static/chunks/0nbx.0b0w2edm.js — 200 — 476 B — 65 ms — h2
0 ms 1.0 s 2.0 s 3.0 s FCP 3.6 shttps://france.tv// https://france.tv/ — 301 — 73 B — 16 ms — h2https://www.france.tv/www.france.tv/ https://www.france.tv/ — 200 — 257.5 KiB — 38 ms — h2https://www.france.tv/_next/static/chunks/0gb7-n17f5c2e.csswww.france.tv/_next/static/chunks/0... https://www.france.tv/_next/static/chunks/0gb7-n17f5c2e.css — 200 — 2.1 KiB — 21 ms — h2https://www.france.tv/_next/static/chunks/0c-wc7.t4byup.csswww.france.tv/_next/static/chunks/0... https://www.france.tv/_next/static/chunks/0c-wc7.t4byup.css — 200 — 39.7 KiB — 27 ms — h2https://www.france.tv/_next/static/chunks/08u.pijhxcm-0.csswww.france.tv/_next/static/chunks/0... https://www.france.tv/_next/static/chunks/08u.pijhxcm-0.css — 200 — 925 B — 25 ms — h2https://www.france.tv/images/fallback-16_9.svgwww.france.tv/images/fallback-16_9.... https://www.france.tv/images/fallback-16_9.svg — 200 — 798 B — 19 ms — h2https://utiq.france.tv/utiqLoader.jsutiq.france.tv/utiqLoader.js https://utiq.france.tv/utiqLoader.js — 200 — 40.8 KiB — 345 ms — http/1.1https://medias.france.tv/7rJ_N-XbvnTinlHy-WwTSW8grq0/970x0/filters:quality(85):format(webp)/h/1/m/php5mim1h.jpgmedias.france.tv/7rJ_N-XbvnTinlHy-W... https://medias.france.tv/7rJ_N-XbvnTinlHy-WwTSW8grq0/970x0/filters:quality(85):format(webp)/h/1/m/php5mim1h.jpg — 200 — 17.8 KiB — 22 ms — h2https://medias.france.tv/ph1tOq_02-YWpzf4XS9KHgJ9LLM/970x0/filters:quality(85):format(webp)/v/v/m/phpmeimvv.jpgmedias.france.tv/ph1tOq_02-YWpzf4XS... https://medias.france.tv/ph1tOq_02-YWpzf4XS9KHgJ9LLM/970x0/filters:quality(85):format(webp)/v/v/m/phpmeimvv.jpg — 200 — 152.6 KiB — 43 ms — h2https://medias.france.tv/C5zllAISJYRDsvWmaZGJAZTbsTo/970x0/filters:quality(85):format(webp)/i/7/9/phpodo97i.jpgmedias.france.tv/C5zllAISJYRDsvWmaZ... https://medias.france.tv/C5zllAISJYRDsvWmaZGJAZTbsTo/970x0/filters:quality(85):format(webp)/i/7/9/phpodo97i.jpg — 200 — 112.3 KiB — 44 ms — h2https://www.france.tv/_next/static/chunks/0j15lq9f6jk8_.jswww.france.tv/_next/static/chunks/0... https://www.france.tv/_next/static/chunks/0j15lq9f6jk8_.js — 200 — 2.5 KiB — 24 ms — h2https://www.france.tv/_next/static/chunks/0y-1z9_8uwr1o.jswww.france.tv/_next/static/chunks/0... https://www.france.tv/_next/static/chunks/0y-1z9_8uwr1o.js — 200 — 8.9 KiB — 44 ms — h2https://www.france.tv/_next/static/chunks/0chjs8n~o0qf9.jswww.france.tv/_next/static/chunks/0... https://www.france.tv/_next/static/chunks/0chjs8n~o0qf9.js — 200 — 9.1 KiB — 48 ms — h2https://www.france.tv/_next/static/chunks/0-kkveyz.tao8.jswww.france.tv/_next/static/chunks/0... https://www.france.tv/_next/static/chunks/0-kkveyz.tao8.js — 200 — 69.4 KiB — 63 ms — h2https://www.france.tv/_next/static/chunks/13~l3v61a953~.jswww.france.tv/_next/static/chunks/1... https://www.france.tv/_next/static/chunks/13~l3v61a953~.js — 200 — 28.6 KiB — 61 ms — h2https://www.france.tv/_next/static/chunks/10k4zy97geweu.jswww.france.tv/_next/static/chunks/1... https://www.france.tv/_next/static/chunks/10k4zy97geweu.js — 200 — 9.3 KiB — 60 ms — h2https://www.france.tv/_next/static/chunks/turbopack-11bj44dfjrd91.jswww.france.tv/_next/static/chunks/t... https://www.france.tv/_next/static/chunks/turbopack-11bj44dfjrd91.js — 200 — 4.4 KiB — 15 ms — h2https://www.france.tv/_next/static/chunks/0eqw72mh9jazy.jswww.france.tv/_next/static/chunks/0... https://www.france.tv/_next/static/chunks/0eqw72mh9jazy.js — 200 — 19.7 KiB — 18 ms — h2https://www.france.tv/_next/static/chunks/0jl~-gmw0osqz.jswww.france.tv/_next/static/chunks/0... https://www.france.tv/_next/static/chunks/0jl~-gmw0osqz.js — 200 — 6.4 KiB — 33 ms — h2https://www.france.tv/_next/static/chunks/0x3fl6s14yhet.jswww.france.tv/_next/static/chunks/0... https://www.france.tv/_next/static/chunks/0x3fl6s14yhet.js — 200 — 5.7 KiB — 36 ms — h2https://www.france.tv/_next/static/chunks/0sdnhwmcyo4po.jswww.france.tv/_next/static/chunks/0... https://www.france.tv/_next/static/chunks/0sdnhwmcyo4po.js — 200 — 10.2 KiB — 28 ms — h2https://www.france.tv/_next/static/chunks/0twkz4.ss700c.jswww.france.tv/_next/static/chunks/0... https://www.france.tv/_next/static/chunks/0twkz4.ss700c.js — 200 — 19.9 KiB — 15 ms — h2https://www.france.tv/_next/static/chunks/0tveo8az6nwr~.jswww.france.tv/_next/static/chunks/0... https://www.france.tv/_next/static/chunks/0tveo8az6nwr~.js — 200 — 13.4 KiB — 34 ms — h2https://www.france.tv/_next/static/chunks/05oatm~ix84r8.jswww.france.tv/_next/static/chunks/0... https://www.france.tv/_next/static/chunks/05oatm~ix84r8.js — 200 — 11.9 KiB — 25 ms — h2https://www.france.tv/_next/static/chunks/040bg66a0mnyl.jswww.france.tv/_next/static/chunks/0... https://www.france.tv/_next/static/chunks/040bg66a0mnyl.js — 200 — 8.8 KiB — 23 ms — 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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 9098ms · 601KB · €145/mo
www.france.tv
Other
Costly
Execution 3609ms
Transfer 257 KB
Monthly Cost €58/mo
www.france.tv
Other
Costly
Execution 1869ms
Transfer 69 KB
Monthly Cost €30/mo
Unattributable
Other
Costly
Execution 1525ms
Transfer 0 KB
Monthly Cost €24/mo
www.france.tv
Other
Costly
Execution 619ms
Transfer 3 KB
Monthly Cost €10/mo
sdk.privacy-center.org
Other
Costly
Execution 470ms
Transfer 101 KB
Monthly Cost €8/mo
sdk.privacy-center.org
Other
Costly
Execution 402ms
Transfer 54 KB
Monthly Cost €6/mo
utiq.france.tv
Other
Costly
Execution 355ms
Transfer 41 KB
Monthly Cost €6/mo
www.france.tv
Other
Optional
Execution 151ms
Transfer 49 KB
Monthly Cost €2/mo
tag.aticdn.net
Other
Optional
Execution 97ms
Transfer 27 KB
Monthly Cost €2/mo

These scripts may cost more than they're worth

  • www.france.tv adds 3609ms and costs ~€58/month
  • www.france.tv adds 1869ms and costs ~€30/month
  • Unattributable adds 1525ms and costs ~€24/month
  • www.france.tv adds 619ms and costs ~€10/month
  • sdk.privacy-center.org adds 470ms and costs ~€8/month
  • sdk.privacy-center.org adds 402ms and costs ~€6/month
  • utiq.france.tv adds 355ms and costs ~€6/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.france.tv takes 3609ms 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.france.tv takes 1869ms 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 1525ms 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.france.tv takes 619ms 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

sdk.privacy-center.org takes 470ms 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

sdk.privacy-center.org takes 402ms 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

utiq.france.tv takes 355ms 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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