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https://www.pole-emploi.fr

Performance

· 14 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
77
GRADE
C
FIX
4
REVIEW
3
PASS
5
INFO
2

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

Mobile Desktop
78
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
97
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
81
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.

1.21 s

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

2.95 s

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.

0.034

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

1.85 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.

2.99 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
14
5 PASS 3 REVIEW 4 FIX
D
Page Weight Budget
Action
2.3 MB transferred, 81 requests
FIX
2.3 MB transferred, 81 requests
Info::
Page weighs 4.7 MB (2.3 MB transferred)
Warning::
Images are 1.2 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 1.2 MB
Warning::
JavaScript is 724 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 724 KB
Info::
CSS is 213 KB — consider purging unused styles
Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.
Got: 213 KB
Info::
81 HTTP requests
Info::
Estimated 0.48 g CO2 per page load
2.3 MB / 2.4 MB budget
2.3 MB transferred
81 requests
0.48 g CO2 per page load
Images 1.2 MiB 52%
JavaScript 723.7 KiB 31%
CSS 212.7 KiB 9%
Fonts 145.1 KiB 6%
Other 14.4 KiB 1%
HTML 6.1 KiB 0%
Other 3.6 KiB 0%
Other 868 B 0%
Other 831 B 0%
0 2.4 MB 4.9 MB
Approaching limit

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

Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.

Why this matters

CSS bundle is large — purge unused styles (PurgeCSS, Tailwind JIT) to reduce CSS payload.

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 (2.3 MiB of 2.3 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Bundles
Action
18 scripts, 307 KB unused
FIX
18 scripts, 307 KB unused
Warning::
https://guidances-applicatives.francetravail.fr/kn...: 169 KB unused (58%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://guidances-applicatives.francetravail.fr/kn...: unminified — 109 KB could be saved
Warning::
https://www.francetravail.fr/accueil/ruxitagentjs_...: 75 KB unused (61%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.tagcommander.com/4340/tc_PoleEmploi_24...: 63 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.tagcommander.com/4340/tc_PoleEmploi_24...: unminified — 13 KB could be saved
Info::
Total unused JavaScript: 307 KB
307 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://guidances-applicatives.francetravail.fr/know/api/engine?pkgId=170&version=-1802123745294 KB169 KB (58%)✗3rd
https://www.francetravail.fr/accueil/ruxitagentjs_ICA15789NPRTUVXfqrux_10331260218130851.js124 KB75 KB (61%)✓3rd
https://cdn.tagcommander.com/4340/tc_PoleEmploi_24.js128 KB63 KB (49%)✗3rd
https://tag.aticdn.net/js-sdk/piano-analytics-6.8.3.js23 KB—✓3rd
https://cdn.francetravail.fr/webco/v1/ft-collapse.js3 KB—✓3rd
https://cdn.francetravail.fr/webco/v1/ft-footer.js6 KB—✓3rd
https://cdn.francetravail.fr/webco/v1/pe-cookies.js11 KB—✓3rd
https://guidances-applicatives.francetravail.fr/know/servlet/publicationList?applicationId=po0143 KB—✓3rd
https://www.francetravail.fr/accueil/assets/index-CacMFJSy.js58 KB—✓3rd
https://cdn.francetravail.fr/webco/v1/ft-alert.js3 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

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
Image Optimization
Action
41 images, 0 KB saveable
REVIEW
41 images, 0 KB saveable
Warning::
https://www.francetravail.fr/files/live/sites/PE/f... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdn.francetravail.fr/studio/design-system/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.francetravail.fr/files/live/sites/PE/f... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.francetravail.fr/files/live/sites/PE/f... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.francetravail.fr/files/live/sites/PE/f... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.francetravail.fr/files/live/sites/PE/f... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.francetravail.fr/files/live/sites/PE/f... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.francetravail.fr/files/live/sites/PE/f... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.francetravail.fr/files/live/sites/PE/f... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.francetravail.fr/files/live/sites/PE/f... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdn.francetravail.fr/studio/design-system/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.francetravail.fr/files/live/sites/PE/f... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.francetravail.fr/files/live/sites/PE/f... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdn.francetravail.fr/studio/design-system/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.francetravail.fr/files/live/sites/PE/f... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.francetravail.fr/files/live/sites/PE/f... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.francetravail.fr/files/live/sites/PE/f... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdn.francetravail.fr/studio/design-system/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
41 images 1.2 MB
0 oversized -0 KB
39 legacy format
18 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

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

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

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

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

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

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

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

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

B
JS Execution Cost
766ms total JS execution
REVIEW
766ms total JS execution
Warning::
https://www.francetravail.fr/accueil/: 274ms CPU time
Info::
Unattributable: 150ms CPU time
Info::
https://www.francetravail.fr/accueil/ruxitagentjs_...: 89ms CPU time
Info::
https://cdn.tagcommander.com/4340/tc_PoleEmploi_24...: 89ms CPU time
Info::
https://guidances-applicatives.francetravail.fr/kn...: 85ms CPU time
Warning::
Third-party scripts: 766ms (100% of total)

Main Thread Breakdown

Script Evaluation 33% Other 29% Style & Layout 18% Rendering 8% Script Parsing & Compilation 7% Parse HTML & CSS 5%
ScriptTotalScriptingParse/CompileParty
https://www.francetravail.fr/accueil/274ms4ms0ms3rd
Unattributable150ms12ms0ms3rd
https://www.francetravail.fr/accueil/ruxitagentjs_ICA15789NPRTUVXfqrux_10331260218130851.js89ms76ms8ms3rd
https://cdn.tagcommander.com/4340/tc_PoleEmploi_24.js89ms54ms16ms3rd
https://guidances-applicatives.francetravail.fr/know/api/engine?pkgId=170&version=-180212374585ms43ms30ms3rd
https://www.francetravail.fr/accueil/assets/index-CacMFJSy.js80ms52ms0ms3rd
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
3 fonts (145 KB)
PASS
3 fonts (145 KB)
Info::
3 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

3

145 KB total

Render-blocking

0

of 3

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 1.2 s LCP 3.0 shttps://cdn.francetravail.fr/studio/design-system/fonts/marianne/Marianne-Medium.woff2Marianne-Medium.woff2 https://cdn.francetravail.fr/studio/design-system/fonts/marianne/Marianne-Medium.woff2 — 41.4 KiB — 0 ms — font-display: swaphttps://cdn.francetravail.fr/studio/design-system/fonts/marianne/Marianne-Bold.woff2Marianne-Bold.woff2 https://cdn.francetravail.fr/studio/design-system/fonts/marianne/Marianne-Bold.woff2 — 41.6 KiB — 0 ms — font-display: swaphttps://cdn.francetravail.fr/studio/design-system/fonts/ft-icons.woff2?n9dtj2ft-icons.woff2 https://cdn.francetravail.fr/studio/design-system/fonts/ft-icons.woff2?n9dtj2 — 62.0 KiB — 0 ms — font-display: swap
Marianne-Medium.woff2 woff2 swap
Size 41 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Marianne-Bold.woff2 woff2 swap
Size 42 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
ft-icons.woff2 woff2 swap
Size 62 KB
Load time 0 ms
Start 0 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
Network Waterfall
81 requests over 0ms
INFO

Performance analysis not available for this result.

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 766ms · 611KB · €8/mo
www.francetravail.fr
Other
Costly
Execution 274ms
Transfer 6 KB
Monthly Cost €3/mo
Unattributable
Other
Optional
Execution 150ms
Transfer 0 KB
Monthly Cost €2/mo
www.francetravail.fr
Other
Optional
Execution 89ms
Transfer 124 KB
Unused 61%
Monthly Cost €1/mo
cdn.tagcommander.com
Other
Optional
Execution 89ms
Transfer 128 KB
Unused 49%
Monthly Cost €1/mo
guidances-applicatives.francetravail.fr
Other
Optional
Execution 85ms
Transfer 294 KB
Unused 58%
Monthly Cost €1/mo
www.francetravail.fr
Other
Optional
Execution 80ms
Transfer 58 KB
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • www.francetravail.fr adds 274ms 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.francetravail.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

61% of www.francetravail.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

58% of guidances-applicatives.francetravail.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

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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