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https://allocine.fr

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
73
GRADE
C
FIX
4
REVIEW
3
PASS
6
INFO
2

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

Mobile Desktop
98
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
83
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
77
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
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.

552 ms

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

829 ms

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

74 ms

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

0.016

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

1.22 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.

2.90 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
6 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 (1.5 MiB of 1.5 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Bundles
Action
26 scripts, 543 KB unused
FIX
26 scripts, 543 KB unused
Warning::
https://securepubads.g.doubleclick.net/pagead/mana...: 141 KB unused (75%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.lib.getjad.io/prebid/120157152: 127 KB unused (80%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.lib.getjad.io/library/120157152/ALLOCI...: 106 KB unused (52%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.lib.getjad.io/library/120157152/ALLOCI...: unminified — 89 KB could be saved
Warning::
https://assets.allocine.fr/js/website/website-comm...: 78 KB unused (46%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://sdk.privacy-center.org/sdk/22ecd6bfac93de6...: 46 KB unused (45%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 543 KB
543 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js?cb=31097945188 KB141 KB (75%)✓3rd
https://cdn.lib.getjad.io/prebid/120157152159 KB127 KB (80%)✓3rd
https://cdn.lib.getjad.io/library/120157152/ALLOCINE_FR_WEB203 KB106 KB (52%)✗3rd
https://assets.allocine.fr/js/website/website-common.d3da14fd91803900262f.js173 KB78 KB (46%)✓3rd
https://sdk.privacy-center.org/sdk/22ecd6bfac93de604efec0b75b2c796ee1675f92/modern/sdk.22ecd6bfac93de604efec0b75b2c796ee1675f92.js101 KB46 KB (45%)✓3rd
https://client.aps.amazon-adsystem.com/publisher.js82 KB46 KB (56%)✓3rd
https://assets.allocine.fr/js/website/script-03.8a1fc93fdc6a41f47900.js5 KB—✓3rd
https://cdn.pbstck.com/user-sessions-a657a01.js17 KB—✓3rd
https://assets.allocine.fr/js/website/5038.611da82d3fb224bd2785.js14 KB—✓3rd
https://assets.allocine.fr/js/website/2326.c70bb3085d1439348f66.js6 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

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
65 resources · 1.5 MB · 543 KB savings available
FIX
65 resources · 1.5 MB · 543 KB savings available
Warning::
Page weight 514 KB over 1MB target
Got: 1.5 MB Expected: ≤ 1 MB
Info::
~543 KB of savings available
Warning::
64 third-party resources (100% of weight)
Info::
1 resources over 200KB
65 resources · 1.5 MiB · 64 third-party 514.0 KiB over 1MB target
JavaScript 81% · 1.2 MiB
Image 11% · 171.1 KiB
Document 4% · 57.8 KiB
Other 2% · 32.0 KiB
Font 1% · 17.8 KiB
CSS 1% · 9.0 KiB

~543.4 KiB of savings available

Remove unused JavaScript: 543.4 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
Page Weight Budget
1.5 MB transferred, 65 requests
REVIEW
1.5 MB transferred, 65 requests
Info::
Page weighs 5.3 MB (1.5 MB transferred)
Warning::
JavaScript is 1.2 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.2 MB
Info::
65 HTTP requests
Info::
Estimated 0.31 g CO2 per page load
1.5 MB / 2.4 MB budget
1.5 MB transferred
65 requests
0.31 g CO2 per page load
JavaScript 1.2 MiB 78%
Images 168.1 KiB 11%
Other 58.4 KiB 4%
HTML 56.5 KiB 4%
Other 25.1 KiB 2%
Fonts 17.8 KiB 1%
CSS 9.0 KiB 1%
Other 3.6 KiB 0%
Other 97 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

C
Image Optimization
Action
21 images, 0 KB saveable
REVIEW
21 images, 0 KB saveable
Warning::
data:image/gif;base64,R0lGODlhAgABAPAAAAAAAAAAACH5... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://fr.web.img6.acsta.net/commons/v9/allocine/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
21 images 168 KB
0 oversized -0 KB
10 legacy format
2 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

C
JS Execution Cost
Action
1224ms total JS execution
REVIEW
1224ms total JS execution
Warning::
https://www.allocine.fr/: 274ms CPU time
Info::
Unattributable: 203ms CPU time
Info::
https://cdn.lib.getjad.io/library/120157152/ALLOCI...: 193ms CPU time
Info::
https://securepubads.g.doubleclick.net/pagead/mana...: 104ms CPU time
Info::
https://sdk.privacy-center.org/sdk/22ecd6bfac93de6...: 89ms CPU time
Warning::
Third-party scripts: 1224ms (100% of total)

Main Thread Breakdown

Script Evaluation 55% Other 13% Script Parsing & Compilation 12% Style & Layout 10% Rendering 6%
ScriptTotalScriptingParse/CompileParty
https://www.allocine.fr/274ms33ms3ms3rd
Unattributable203ms70ms0ms3rd
https://cdn.lib.getjad.io/library/120157152/ALLOCINE_FR_WEB193ms139ms42ms3rd
https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js?cb=31097945104ms55ms20ms3rd
https://sdk.privacy-center.org/sdk/22ecd6bfac93de604efec0b75b2c796ee1675f92/modern/ui-web-fr-web.22ecd6bfac93de604efec0b75b2c796ee1675f92.js89ms68ms9ms3rd
https://sdk.privacy-center.org/sdk/22ecd6bfac93de604efec0b75b2c796ee1675f92/modern/sdk.22ecd6bfac93de604efec0b75b2c796ee1675f92.js83ms62ms13ms3rd
https://assets.allocine.fr/js/website/home.07ffba97132d723e791c.js82ms73ms3ms3rd
https://client.aps.amazon-adsystem.com/publisher.js73ms55ms14ms3rd
https://assets.allocine.fr/js/website/website-common.d3da14fd91803900262f.js63ms35ms18ms3rd
https://cdn.lib.getjad.io/prebid/12015715259ms43ms16ms3rd
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 (18 KB)
PASS
2 fonts (18 KB)
Info::
2 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

2

18 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 552 ms LCP 829 mshttps://assets.allocine.fr/skin/font/icon/font-icon.488231ae.woff2font-icon.488231ae.woff2 https://assets.allocine.fr/skin/font/icon/font-icon.488231ae.woff2 — 17.8 KiB — 20 ms — font-display: swaphttps://assets.allocine.fr/skin/font/icon/font-icon.488231ae.woff2font-icon.488231ae.woff2 https://assets.allocine.fr/skin/font/icon/font-icon.488231ae.woff2 — 0 B — 5 ms — font-display: swap
font-icon.488231ae.woff2 woff2 swap
Size 18 KB
Load time 20 ms
Start 46 ms
Risk FOUT — text flashes from fallback to web font
font-icon.488231ae.woff2 woff2 swap
Size 0 KB
Load time 5 ms
Start 144 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+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Cloudflare

Network Waterfall
65 requests over 1930ms
INFO
0 ms 500 ms 1.0 s 1.5 s 2.0 s FCP 552 ms LCP 829 mshttps://allocine.fr// https://allocine.fr/ — 301 — 375 B — 13 ms — h2https://www.allocine.fr/www.allocine.fr/ https://www.allocine.fr/ — 200 — 56.5 KiB — 26 ms — h2https://assets.allocine.fr/skin/font/icon/font-icon.488231ae.woff2assets.allocine.fr/skin/font/icon/f... https://assets.allocine.fr/skin/font/icon/font-icon.488231ae.woff2 — 200 — 17.8 KiB — 20 ms — h2https://assets.allocine.fr/skin/img/allocine/logo-main-grey.5de8867c.svgassets.allocine.fr/skin/img/allocin... https://assets.allocine.fr/skin/img/allocine/logo-main-grey.5de8867c.svg — 200 — 1.7 KiB — 22 ms — h2https://assets.allocine.fr/js/website/website-common.d3da14fd91803900262f.jsassets.allocine.fr/js/website/websi... https://assets.allocine.fr/js/website/website-common.d3da14fd91803900262f.js — 200 — 172.6 KiB — 48 ms — h2https://assets.allocine.fr/js/website/home.07ffba97132d723e791c.jsassets.allocine.fr/js/website/home.... https://assets.allocine.fr/js/website/home.07ffba97132d723e791c.js — 200 — 23.8 KiB — 38 ms — h2https://fr.web.img6.acsta.net/img/dc/4b/dc4b39b9f1590e39a8dab7672030047b.jpgfr.web.img6.acsta.net/img/dc/4b/dc4... https://fr.web.img6.acsta.net/img/dc/4b/dc4b39b9f1590e39a8dab7672030047b.jpg — 200 — 40.7 KiB — 66 ms — h2https://fr.web.img4.acsta.net/c_350_135/img/bc/16/bc161b70f72dc61a6b4ae4d640862c45.jpgfr.web.img4.acsta.net/c_350_135/img... https://fr.web.img4.acsta.net/c_350_135/img/bc/16/bc161b70f72dc61a6b4ae4d640862c45.jpg — 200 — 13.3 KiB — 56 ms — h2https://fr.web.img4.acsta.net/c_350_135/img/f4/04/f404df65e713d76389e53402366f2e0c.jpgfr.web.img4.acsta.net/c_350_135/img... https://fr.web.img4.acsta.net/c_350_135/img/f4/04/f404df65e713d76389e53402366f2e0c.jpg — 200 — 6.9 KiB — 40 ms — h2https://fr.web.img2.acsta.net/c_350_135/img/cf/0b/cf0bf8fb1aa0e665132c009cbde34129.jpgfr.web.img2.acsta.net/c_350_135/img... https://fr.web.img2.acsta.net/c_350_135/img/cf/0b/cf0bf8fb1aa0e665132c009cbde34129.jpg — 200 — 16.0 KiB — 70 ms — h2https://fr.web.img4.acsta.net/c_350_135/img/41/44/414431994d1d813605608eea6bb81c54.jpgfr.web.img4.acsta.net/c_350_135/img... https://fr.web.img4.acsta.net/c_350_135/img/41/44/414431994d1d813605608eea6bb81c54.jpg — 200 — 7.4 KiB — 41 ms — h2https://www.allocine.fr/_/js/routing?callback=AC.setRoutingwww.allocine.fr/_/js/routing?callba... https://www.allocine.fr/_/js/routing?callback=AC.setRouting — 200 — 3.4 KiB — 29 ms — h2https://assets.allocine.fr/js/website/translations-3e5f9a1ee288763011eec279f4f2a02d.fr_FR.jsassets.allocine.fr/js/website/trans... https://assets.allocine.fr/js/website/translations-3e5f9a1ee288763011eec279f4f2a02d.fr_FR.js — 200 — 13.2 KiB — 29 ms — h2https://assets.allocine.fr/skin/img/allocine/logo-main.ab1b33da.svgassets.allocine.fr/skin/img/allocin... https://assets.allocine.fr/skin/img/allocine/logo-main.ab1b33da.svg — 200 — 1.5 KiB — 24 ms — h2https://fr.web.img5.acsta.net/c_350_135/img/74/c7/74c711ce80eaa61e42b4ac9a291c84cf.jpgfr.web.img5.acsta.net/c_350_135/img... https://fr.web.img5.acsta.net/c_350_135/img/74/c7/74c711ce80eaa61e42b4ac9a291c84cf.jpg — 200 — 9.6 KiB — 69 ms — h2https://fr.web.img2.acsta.net/c_150_200/img/f2/01/f201af7e5a1b0119af9047725a3f2785.jpegfr.web.img2.acsta.net/c_150_200/img... https://fr.web.img2.acsta.net/c_150_200/img/f2/01/f201af7e5a1b0119af9047725a3f2785.jpeg — 200 — 6.9 KiB — 71 ms — h2https://fr.web.img2.acsta.net/c_150_200/img/70/d6/70d6f7006ed9b8dbaf991e6922ba60f7.jpgfr.web.img2.acsta.net/c_150_200/img... https://fr.web.img2.acsta.net/c_150_200/img/70/d6/70d6f7006ed9b8dbaf991e6922ba60f7.jpg — 200 — 10.4 KiB — 65 ms — h2https://fr.web.img2.acsta.net/c_150_200/img/0b/f9/0bf95ca0474a1781b921862fb273a9cb.jpgfr.web.img2.acsta.net/c_150_200/img... https://fr.web.img2.acsta.net/c_150_200/img/0b/f9/0bf95ca0474a1781b921862fb273a9cb.jpg — 200 — 12.4 KiB — 67 ms — h2https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da1771523124516static.cloudflareinsights.com/beaco... https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da1771523124516 — 200 — 10.7 KiB — 66 ms — h2data:image/gif;base64,R0lGODlhAQABAIAAAAAAAAAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==data:image/gif;base64,R0lGODlhAQABA... data:image/gif;base64,R0lGODlhAQABAIAAAAAAAAAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw== — 200 — 0 B — 0 ms — datadata:image/gif;base64,R0lGODlhAwAEAIAAAAAAAAAAACH5BAEAAAAALAAAAAADAAQAAAIDhI9WADs=data:image/gif;base64,R0lGODlhAwAEA... data:image/gif;base64,R0lGODlhAwAEAIAAAAAAAAAAACH5BAEAAAAALAAAAAADAAQAAAIDhI9WADs= — 200 — 0 B — 0 ms — datadata:image/gif;base64,R0lGODlhAgABAPAAAAAAAAAAACH5BAEAAAAAIf8LSW1hZ2VNYWdpY2sNZ2FtbWE9MC40NTQ1NQAsA…data:image/gif;base64,R0lGODlhAgABA... data:image/gif;base64,R0lGODlhAgABAPAAAAAAAAAAACH5BAEAAAAAIf8LSW1hZ2VNYWdpY2sNZ2FtbWE9MC40NTQ1NQAsA… — 200 — 0 B — 0 ms — datadata:image/gif;base64,R0lGODlhEAAJAIAAAAAAAAAAACH5BAEAAAAALAAAAAAQAAkAAAIKhI+py+0Po5yUFQA7data:image/gif;base64,R0lGODlhEAAJA... data:image/gif;base64,R0lGODlhEAAJAIAAAAAAAAAAACH5BAEAAAAALAAAAAAQAAkAAAIKhI+py+0Po5yUFQA7 — 200 — 0 B — 0 ms — datahttps://assets.allocine.fr/skin/img/logo-allocine.7e88ee87.svgassets.allocine.fr/skin/img/logo-al... https://assets.allocine.fr/skin/img/logo-allocine.7e88ee87.svg — 200 — 1.2 KiB — 19 ms — h3https://assets.allocine.fr/skin/font/icon/font-icon.488231ae.woff2assets.allocine.fr/skin/font/icon/f... https://assets.allocine.fr/skin/font/icon/font-icon.488231ae.woff2 — 200 — 0 B — 5 ms — h2https://sdk.privacy-center.org/e23a01f6-a508-4e71-8f50-c1a9cae7c0d0/loader.js?target_type=notice&target=6rDkyJmjsdk.privacy-center.org/e23a01f6-a50... https://sdk.privacy-center.org/e23a01f6-a508-4e71-8f50-c1a9cae7c0d0/loader.js?target_type=notice&target=6rDkyJmj — 200 — 33.9 KiB — 518 ms — h2https://assets.allocine.fr/skin/img/allocine/logo-main-white.536669e5.svgassets.allocine.fr/skin/img/allocin... https://assets.allocine.fr/skin/img/allocine/logo-main-white.536669e5.svg — 200 — 1.9 KiB — 16 ms — h3https://assets.allocine.fr/skin/img/logo-boxoffice-company.686f7e8e.svgassets.allocine.fr/skin/img/logo-bo... https://assets.allocine.fr/skin/img/logo-boxoffice-company.686f7e8e.svg — 200 — 4.2 KiB — 19 ms — h3https://assets.allocine.fr/skin/img/logo-webedia-white.1476b15c.svgassets.allocine.fr/skin/img/logo-we... https://assets.allocine.fr/skin/img/logo-webedia-white.1476b15c.svg — 200 — 1.8 KiB — 16 ms — h3https://assets.allocine.fr/js/website/script-03.8a1fc93fdc6a41f47900.jsassets.allocine.fr/js/website/scrip... https://assets.allocine.fr/js/website/script-03.8a1fc93fdc6a41f47900.js — 200 — 4.7 KiB — 17 ms — h3
0 ms 500 ms 1.0 s 1.5 s 2.0 s FCP 552 ms LCP 829 mshttps://allocine.fr// https://allocine.fr/ — 301 — 375 B — 13 ms — h2https://www.allocine.fr/www.allocine.fr/ https://www.allocine.fr/ — 200 — 56.5 KiB — 26 ms — h2https://assets.allocine.fr/skin/font/icon/font-icon.488231ae.woff2assets.allocine.fr/skin/font/icon/f... https://assets.allocine.fr/skin/font/icon/font-icon.488231ae.woff2 — 200 — 17.8 KiB — 20 ms — h2https://assets.allocine.fr/skin/img/allocine/logo-main-grey.5de8867c.svgassets.allocine.fr/skin/img/allocin... https://assets.allocine.fr/skin/img/allocine/logo-main-grey.5de8867c.svg — 200 — 1.7 KiB — 22 ms — h2https://assets.allocine.fr/js/website/website-common.d3da14fd91803900262f.jsassets.allocine.fr/js/website/websi... https://assets.allocine.fr/js/website/website-common.d3da14fd91803900262f.js — 200 — 172.6 KiB — 48 ms — h2https://assets.allocine.fr/js/website/home.07ffba97132d723e791c.jsassets.allocine.fr/js/website/home.... https://assets.allocine.fr/js/website/home.07ffba97132d723e791c.js — 200 — 23.8 KiB — 38 ms — h2https://fr.web.img6.acsta.net/img/dc/4b/dc4b39b9f1590e39a8dab7672030047b.jpgfr.web.img6.acsta.net/img/dc/4b/dc4... https://fr.web.img6.acsta.net/img/dc/4b/dc4b39b9f1590e39a8dab7672030047b.jpg — 200 — 40.7 KiB — 66 ms — h2https://fr.web.img4.acsta.net/c_350_135/img/bc/16/bc161b70f72dc61a6b4ae4d640862c45.jpgfr.web.img4.acsta.net/c_350_135/img... https://fr.web.img4.acsta.net/c_350_135/img/bc/16/bc161b70f72dc61a6b4ae4d640862c45.jpg — 200 — 13.3 KiB — 56 ms — h2https://fr.web.img4.acsta.net/c_350_135/img/f4/04/f404df65e713d76389e53402366f2e0c.jpgfr.web.img4.acsta.net/c_350_135/img... https://fr.web.img4.acsta.net/c_350_135/img/f4/04/f404df65e713d76389e53402366f2e0c.jpg — 200 — 6.9 KiB — 40 ms — h2https://fr.web.img2.acsta.net/c_350_135/img/cf/0b/cf0bf8fb1aa0e665132c009cbde34129.jpgfr.web.img2.acsta.net/c_350_135/img... 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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 1224ms · 1040KB · €15/mo
www.allocine.fr
Other
Costly
Execution 274ms
Transfer 57 KB
Monthly Cost €3/mo
Unattributable
Other
Costly
Execution 203ms
Transfer 0 KB
Monthly Cost €3/mo
cdn.lib.getjad.io
Other
Optional
Execution 193ms
Transfer 203 KB
Unused 52%
Monthly Cost €2/mo
securepubads.g.doubleclick.net
Other
Optional
Execution 104ms
Transfer 188 KB
Unused 75%
Monthly Cost €1/mo
sdk.privacy-center.org
Other
Optional
Execution 89ms
Transfer 54 KB
Monthly Cost €1/mo
sdk.privacy-center.org
Other
Optional
Execution 83ms
Transfer 101 KB
Unused 45%
Monthly Cost €1/mo
assets.allocine.fr
Other
Optional
Execution 82ms
Transfer 24 KB
Monthly Cost €1/mo
client.aps.amazon-adsystem.com
Other
Optional
Execution 73ms
Transfer 82 KB
Unused 56%
Monthly Cost €1/mo
assets.allocine.fr
Other
Optional
Execution 63ms
Transfer 173 KB
Unused 46%
Monthly Cost €1/mo
cdn.lib.getjad.io
Other
Optional
Execution 59ms
Transfer 159 KB
Unused 80%
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • www.allocine.fr adds 274ms and costs ~€3/month
  • Unattributable adds 203ms 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

www.allocine.fr takes 274ms 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 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

52% of cdn.lib.getjad.io'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

75% of securepubads.g.doubleclick.net'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

56% of client.aps.amazon-adsystem.com's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

80% of cdn.lib.getjad.io'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

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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