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https://www.pole-emploi.fr

Performance

· 16 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
77
GRADE
C
FIX
4
REVIEW
3
PASS
7
INFO
2

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

Mobile Desktop
47
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.

6.42 s

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

13.16 s

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

436 ms

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

0.000

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

7.34 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.

13.42 s

Page Load Progression

431 ms
862 ms
1.3 s
1.7 s
2.2 s
2.6 s
3.0 s
3.4 s
Checks
16
7 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 (2.0 MiB of 2.0 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
JS Execution Cost
Action
3238ms total JS execution
FIX
3238ms total JS execution
Warning::
Unattributable: 668ms CPU time
Warning::
https://www.francetravail.fr/accueil/ruxitagentjs_...: 561ms CPU time
Warning::
https://cdn.tagcommander.com/4340/tc_PoleEmploi_24...: 482ms CPU time
Warning::
https://www.francetravail.fr/accueil/: 450ms CPU time
Warning::
https://www.francetravail.fr/accueil/assets/index-...: 378ms CPU time
Warning::
Third-party scripts: 3238ms (100% of total)

Main Thread Breakdown

Script Evaluation 39% Other 29% Style & Layout 16% Script Parsing & Compilation 7% Parse HTML & CSS 6% Rendering 3%
ScriptTotalScriptingParse/CompileParty
Unattributable668ms59ms0ms3rd
https://www.francetravail.fr/accueil/ruxitagentjs_ICA15789NPRTUVXfqrux_10331260218130851.js561ms431ms55ms3rd
https://cdn.tagcommander.com/4340/tc_PoleEmploi_24.js482ms265ms56ms3rd
https://www.francetravail.fr/accueil/450ms12ms1ms3rd
https://www.francetravail.fr/accueil/assets/index-CacMFJSy.js378ms205ms1ms3rd
https://guidances-applicatives.francetravail.fr/know/api/engine?pkgId=170&version=-1802123745295ms134ms111ms3rd
https://cdn.francetravail.fr/webco/v1/ft-footer.js146ms26ms0ms3rd
https://cdn.francetravail.fr/webco/v1/ft-header.js103ms41ms0ms3rd
https://cdn.francetravail.fr/studio/design-system/css/styles.css?1234583ms0ms0ms3rd
https://tag.aticdn.net/js-sdk/piano-analytics-6.8.3.js72ms61ms10ms3rd
F
JS Bundles
Action
18 scripts, 306 KB unused
FIX
18 scripts, 306 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_...: 74 KB unused (60%)
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: 306 KB
306 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 KB74 KB (60%)✓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.js59 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
Page Weight Budget
Action
2.0 MB transferred, 69 requests
REVIEW
2.0 MB transferred, 69 requests
Info::
Page weighs 4.4 MB (2.0 MB transferred)
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::
69 HTTP requests
Info::
Estimated 0.42 g CO2 per page load
2.0 MB / 2.4 MB budget
2.0 MB transferred
69 requests
0.42 g CO2 per page load
Images 936.8 KiB 46%
JavaScript 724.2 KiB 35%
CSS 212.7 KiB 10%
Fonts 145.1 KiB 7%
Other 14.4 KiB 1%
HTML 6.1 KiB 0%
Other 3.6 KiB 0%
Other 871 B 0%
Other 831 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

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

C
Image Optimization
Action
30 images, 0 KB saveable
REVIEW
30 images, 0 KB saveable
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.
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://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::
is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
30 images 937 KB
0 oversized -0 KB
28 legacy format
15 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

Performance issues directly impact user engagement and conversion rates.

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 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s FCP 6.4 s LCP 13.2 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
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
69 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 3238ms · 758KB · €35/mo
Unattributable
Other
Costly
Execution 668ms
Transfer 0 KB
Monthly Cost €7/mo
www.francetravail.fr
Other
Costly
Execution 561ms
Transfer 124 KB
Unused 60%
Monthly Cost €6/mo
cdn.tagcommander.com
Other
Costly
Execution 482ms
Transfer 128 KB
Unused 49%
Monthly Cost €5/mo
www.francetravail.fr
Other
Costly
Execution 450ms
Transfer 6 KB
Monthly Cost €5/mo
www.francetravail.fr
Other
Costly
Execution 378ms
Transfer 59 KB
Monthly Cost €4/mo
guidances-applicatives.francetravail.fr
Other
Costly
Execution 295ms
Transfer 294 KB
Unused 58%
Monthly Cost €3/mo
cdn.francetravail.fr
Other
Optional
Execution 146ms
Transfer 6 KB
Monthly Cost €2/mo
cdn.francetravail.fr
Other
Optional
Execution 103ms
Transfer 27 KB
Monthly Cost €1/mo
cdn.francetravail.fr
Other
Optional
Execution 83ms
Transfer 91 KB
Monthly Cost €1/mo
tag.aticdn.net
Other
Optional
Execution 72ms
Transfer 23 KB
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • Unattributable adds 668ms and costs ~€7/month
  • www.francetravail.fr adds 561ms and costs ~€6/month
  • cdn.tagcommander.com adds 482ms and costs ~€5/month
  • www.francetravail.fr adds 450ms and costs ~€5/month
  • www.francetravail.fr adds 378ms and costs ~€4/month
  • guidances-applicatives.francetravail.fr adds 295ms 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

Unattributable takes 668ms 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.francetravail.fr takes 561ms 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

60% 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

cdn.tagcommander.com takes 482ms 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.francetravail.fr takes 450ms 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.francetravail.fr takes 378ms 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

guidances-applicatives.francetravail.fr takes 295ms 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

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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