Performance
· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
2.08 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
13.79 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1.77 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.031
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
4.12 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.
13.99 s
Page Load Progression
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction5510ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.allocine.fr/ | 1052ms | 82ms | 11ms | 3rd |
| https://cdn.lib.getjad.io/library/120157152/ALLOCINE_FR_WEB | 825ms | 581ms | 175ms | 3rd |
| Unattributable | 814ms | 292ms | 0ms | 3rd |
| https://sdk.privacy-center.org/sdk/22ecd6bfac93de604efec0b75b2c796ee1675f92/modern/sdk.22ecd6bfac93de604efec0b75b2c796ee1675f92.js | 397ms | 286ms | 67ms | 3rd |
| https://sdk.privacy-center.org/sdk/22ecd6bfac93de604efec0b75b2c796ee1675f92/modern/ui-web-fr-web.22ecd6bfac93de604efec0b75b2c796ee1675f92.js | 332ms | 245ms | 34ms | 3rd |
| https://assets.allocine.fr/js/website/home.07ffba97132d723e791c.js | 322ms | 298ms | 10ms | 3rd |
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604210101/pubads_impl.js?cb=31098008 | 274ms | 182ms | 79ms | 3rd |
| https://assets.allocine.fr/js/website/website-common.d3da14fd91803900262f.js | 258ms | 145ms | 75ms | 3rd |
| https://client.aps.amazon-adsystem.com/publisher.js | 253ms | 189ms | 53ms | 3rd |
| https://cdn.lib.getjad.io/prebid/120157152 | 242ms | 176ms | 65ms | 3rd |
Showing top 10 of 17 scripts
FJS BundlesAction26 scripts, 547 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604210101/pubads_impl.js?cb=31098008 | 188 KB | 142 KB (76%) | ✓ | 3rd |
| https://cdn.lib.getjad.io/prebid/120157152 | 159 KB | 127 KB (80%) | ✓ | 3rd |
| https://cdn.lib.getjad.io/library/120157152/ALLOCINE_FR_WEB | 203 KB | 106 KB (52%) | ✗ | 3rd |
| https://assets.allocine.fr/js/website/website-common.d3da14fd91803900262f.js | 173 KB | 79 KB (46%) | ✓ | 3rd |
| https://client.aps.amazon-adsystem.com/publisher.js | 82 KB | 47 KB (57%) | ✓ | 3rd |
| https://sdk.privacy-center.org/sdk/22ecd6bfac93de604efec0b75b2c796ee1675f92/modern/sdk.22ecd6bfac93de604efec0b75b2c796ee1675f92.js | 101 KB | 46 KB (45%) | ✓ | 3rd |
| https://assets.allocine.fr/js/website/script-03.8a1fc93fdc6a41f47900.js | 5 KB | — | ✓ | 3rd |
| https://c.amazon-adsystem.com/bao-csm/aps-comm/aps_csm.js | 3 KB | — | ✓ | 3rd |
| https://assets.allocine.fr/js/website/5038.611da82d3fb224bd2785.js | 14 KB | — | ✓ | 3rd |
| https://assets.allocine.fr/js/website/2326.c70bb3085d1439348f66.js | 6 KB | — | ✓ | 3rd |
Consider code splitting or tree shaking to reduce unused code.
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.
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.
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.
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.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
FPage Weight InventoryAction63 resources · 1.5 MB · 547 KB savings availableFIX
~546.5 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 63 resources | 1.5 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BPage Weight Budget1.5 MB transferred, 63 requestsREVIEW
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.
Source: web.dev
CImage OptimizationAction21 images, 0 KB saveableREVIEW
Set explicit width and height to prevent CLS.
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.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
A+Text CompressionAll text resources are compressedPASS
A+Font Loading2 fonts (18 KB)PASS
Web fonts
2
18 KB total
Render-blocking
0
of 2
Dominant font-display
swap
Most common across fonts
Font loading timeline
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 CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource Hints7 hints, 0 missing preconnectsPASS
Current Resource Hints
7 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Network Waterfall63 requests over 1960msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.allocine.fr www.allocine.fr | Other | 1052ms | 57 KB | — | €13/mo | Costly |
cdn.lib.getjad.io cdn.lib.getjad.io | Other | 825ms | 203 KB | 52% | €10/mo | Costly |
Unattributable Unattributable | Other | 814ms | 0 KB | — | €10/mo | Costly |
sdk.privacy-center.org sdk.privacy-center.org | Other | 397ms | 101 KB | 45% | €5/mo | Costly |
sdk.privacy-center.org sdk.privacy-center.org | Other | 332ms | 54 KB | — | €4/mo | Costly |
assets.allocine.fr assets.allocine.fr | Other | 322ms | 24 KB | — | €4/mo | Costly |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 274ms | 188 KB | 76% | €3/mo | Costly |
assets.allocine.fr assets.allocine.fr | Other | 258ms | 173 KB | 46% | €3/mo | Costly |
client.aps.amazon-adsystem.com client.aps.amazon-adsystem.com | Other | 253ms | 82 KB | 57% | €3/mo | Costly |
cdn.lib.getjad.io cdn.lib.getjad.io | Other | 242ms | 159 KB | 80% | €3/mo | Costly |
boot.pbstck.com boot.pbstck.com | Other | 179ms | 1 KB | — | €2/mo | Optional |
cdn.lib.getjan.io cdn.lib.getjan.io | Other | 136ms | 22 KB | — | €2/mo | Optional |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 127ms | 34 KB | — | €2/mo | Optional |
config.aps.amazon-adsystem.com config.aps.amazon-adsystem.com | Other | 104ms | 2 KB | — | €1/mo | Optional |
secure.cdn.fastclick.net secure.cdn.fastclick.net | Other | 75ms | 22 KB | — | €1/mo | Optional |
sdk.privacy-center.org sdk.privacy-center.org | Other | 62ms | 1 KB | — | €1/mo | Optional |
static.cloudflareinsights.com static.cloudflareinsights.com | Other | 57ms | 11 KB | — | €1/mo | Optional |
These scripts may cost more than they're worth
- www.allocine.fr adds 1052ms and costs ~€13/month
- cdn.lib.getjad.io adds 825ms and costs ~€10/month
- Unattributable adds 814ms and costs ~€10/month
- sdk.privacy-center.org adds 397ms and costs ~€5/month
- sdk.privacy-center.org adds 332ms and costs ~€4/month
- assets.allocine.fr adds 322ms and costs ~€4/month
- securepubads.g.doubleclick.net adds 274ms and costs ~€3/month
- assets.allocine.fr adds 258ms and costs ~€3/month
- client.aps.amazon-adsystem.com adds 253ms and costs ~€3/month
- cdn.lib.getjad.io adds 242ms and costs ~€3/month
100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.
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 1052ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
cdn.lib.getjad.io takes 825ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
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.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
Unattributable takes 814ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
sdk.privacy-center.org takes 397ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
sdk.privacy-center.org takes 332ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
assets.allocine.fr takes 322ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
securepubads.g.doubleclick.net takes 274ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
76% of securepubads.g.doubleclick.net's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
assets.allocine.fr takes 258ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
client.aps.amazon-adsystem.com takes 253ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
57% of client.aps.amazon-adsystem.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
cdn.lib.getjad.io takes 242ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
80% of cdn.lib.getjad.io's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev