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.
7.30 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
15.53 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
579 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.
7.30 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.
15.73 s
Page Load Progression
DPage Weight BudgetAction2.1 MB transferred, 87 requestsFIX
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
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
DJS Execution CostAction3021ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| Unattributable | 630ms | 175ms | 0ms | 3rd |
| https://assets.ladepeche.fr/js/script.js?0da78162 | 565ms | 136ms | 9ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-5NFGMPZ | 322ms | 254ms | 51ms | 3rd |
| https://sdk.privacy-center.org/sdk/22ecd6bfac93de604efec0b75b2c796ee1675f92/modern/sdk.22ecd6bfac93de604efec0b75b2c796ee1675f92.js | 256ms | 203ms | 38ms | 3rd |
| https://ylbnnybjum.kameleoon.eu/engine.js | 228ms | 166ms | 50ms | 3rd |
| https://assets.ladepeche.fr/js/vendors~script.js?85246d56 | 210ms | 76ms | 17ms | 3rd |
| https://sdk.privacy-center.org/sdk/22ecd6bfac93de604efec0b75b2c796ee1675f92/modern/ui-web-fr-web.22ecd6bfac93de604efec0b75b2c796ee1675f92.js | 176ms | 104ms | 22ms | 3rd |
| https://utiq.ladepeche.fr/utiqLoader.js | 162ms | 146ms | 10ms | 3rd |
| https://tag.aticdn.net/111841/smarttag.js | 160ms | 149ms | 10ms | 3rd |
| https://www.ladepeche.fr/ | 158ms | 7ms | 3ms | 3rd |
Showing top 10 of 12 scripts
DJS BundlesAction21 scripts, 390 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://carrousel.digiteka.com/hls.B5_AT2WH.js | 121 KB | 108 KB (90%) | ✓ | 3rd |
| https://accounts.google.com/gsi/client | 96 KB | 80 KB (83%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-5NFGMPZ | 177 KB | 76 KB (43%) | ✓ | 3rd |
| https://sdk.privacy-center.org/sdk/22ecd6bfac93de604efec0b75b2c796ee1675f92/modern/sdk.22ecd6bfac93de604efec0b75b2c796ee1675f92.js | 102 KB | 43 KB (43%) | ✓ | 3rd |
| https://assets.ladepeche.fr/js/vendors~script.js?85246d56 | 72 KB | 39 KB (55%) | ✓ | 3rd |
| https://utiq.ladepeche.fr/utiqLoader.js | 41 KB | 22 KB (54%) | ✓ | 3rd |
| https://assets.ladepeche.fr/js/script.js?0da78162 | 35 KB | 22 KB (63%) | ✓ | 3rd |
| https://ylbnnybjum.kameleoon.eu/engine.js | 77 KB | — | ✓ | 3rd |
| https://www.ladepeche.fr/js/vendors~materialize-autocomplete.57e68e2b9543523bfcc6.js | 3 KB | — | ✓ | 3rd |
| https://sdk.privacy-center.org/14b1ab71-f59b-42e7-8ddc-d7a8bfb83edb/loader.js?target_type=notice&target=y7xk3xMp | 39 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
DPage Weight InventoryAction87 resources · 2.1 MB · 390 KB savings availableFIX
~390.1 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 87 resources | 2.1 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction48 images, 0 KB saveableREVIEW
Set explicit width and height to prevent CLS.
Performance issues directly impact user engagement and conversion rates.
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
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
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Text CompressionAll text resources are compressedPASS
A+Font Loading6 fonts (130 KB)PASS
Web fonts
6
130 KB total
Render-blocking
0
of 6
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 Hints9 hints, 0 missing preconnectsPASS
Current Resource Hints
9 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall87 requests over 1414msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 630ms | 0 KB | — | €3/mo | Costly |
assets.ladepeche.fr assets.ladepeche.fr | Other | 565ms | 35 KB | 63% | €2/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 322ms | 177 KB | 43% | €1/mo | Costly |
sdk.privacy-center.org sdk.privacy-center.org | Other | 256ms | 102 KB | 43% | €1/mo | Costly |
ylbnnybjum.kameleoon.eu ylbnnybjum.kameleoon.eu | Other | 228ms | 77 KB | — | €1/mo | Costly |
assets.ladepeche.fr assets.ladepeche.fr | Other | 210ms | 72 KB | 55% | €1/mo | Costly |
sdk.privacy-center.org sdk.privacy-center.org | Other | 176ms | 55 KB | — | €1/mo | Optional |
utiq.ladepeche.fr utiq.ladepeche.fr | Other | 162ms | 41 KB | 54% | €1/mo | Optional |
tag.aticdn.net tag.aticdn.net | Other | 160ms | 31 KB | — | €1/mo | Optional |
www.ladepeche.fr www.ladepeche.fr | Other | 158ms | 71 KB | — | €1/mo | Optional |
sdk.privacy-center.org sdk.privacy-center.org | Other | 79ms | 1 KB | — | €0/mo | Optional |
carrousel.digiteka.com carrousel.digiteka.com | Other | 74ms | 11 KB | — | €0/mo | Optional |
These scripts may cost more than they're worth
- Unattributable adds 630ms and costs ~€3/month
- assets.ladepeche.fr adds 565ms and costs ~€2/month
- Google Tag Manager adds 322ms and costs ~€1/month
- sdk.privacy-center.org adds 256ms and costs ~€1/month
- ylbnnybjum.kameleoon.eu adds 228ms and costs ~€1/month
- assets.ladepeche.fr adds 210ms and costs ~€1/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
Unattributable takes 630ms 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.ladepeche.fr takes 565ms 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
63% of assets.ladepeche.fr'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
Google Tag Manager 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
sdk.privacy-center.org takes 256ms 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
ylbnnybjum.kameleoon.eu takes 228ms 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.ladepeche.fr takes 210ms 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
55% of assets.ladepeche.fr'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
54% of utiq.ladepeche.fr'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