Performance
· 23 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.
355 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
824 ms
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
5 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.012
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
401 ms
Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.
1.57 s
Page Load Progression
DPage Weight BudgetAction2.4 MB transferred, 36 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 ImpactAction76% third-party, 0 ms blockingFIX
FJS BundlesAction15 scripts, 344 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://cdn.jsdelivr.net/npm/xlsx@0.18.5/dist/xlsx.full.min.js | 270 KB | 115 KB (59%) | ✓ | 3rd |
| https://app.exonore.fr/script.js?v=14 | 139 KB | 91 KB (67%) | ✗ | 1st |
| https://cdnjs.cloudflare.com/ajax/libs/jspdf/2.5.1/jspdf.umd.min.js | 94 KB | 77 KB (83%) | ✓ | 3rd |
| https://cdn.jsdelivr.net/npm/chart.js@4.4.0/dist/chart.umd.min.js | 70 KB | 62 KB (89%) | ✓ | 3rd |
| https://challenges.cloudflare.com/turnstile/v0/g/4df4a60fa397/api.js | 28 KB | — | ✓ | 3rd |
| https://app.exonore.fr/events.js | 3 KB | — | ✓ | 1st |
| https://cdnjs.cloudflare.com/ajax/libs/jspdf-autotable/3.8.2/jspdf.plugin.autotable.min.js | 11 KB | — | ✓ | 3rd |
| blob:https://challenges.cloudflare.com/50e2f8dc-028e-430a-8fa6-49e91fd13379 | 0 KB | — | ✓ | 3rd |
| blob:https://challenges.cloudflare.com/af681a89-723c-4f7b-8981-8619c75b8443 | 0 KB | — | ✓ | 3rd |
| blob:https://challenges.cloudflare.com/07844b1b-10b4-4e7c-ba19-770c1c5559ce | -0 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
DPage Weight InventoryAction36 resources · 2.4 MB · 344 KB savings availableFIX
~344.1 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 36 resources | 2.4 MiB | ||||||
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
BHTTP Cachingpublic, max-age=0, must-revalidateREVIEW
public, max-age=0, must-revalidate
| Directive | Value | Meaning |
|---|---|---|
| public | — | Any cache may store this response |
| max-age | 0 | Cache for 0 seconds |
| must-revalidate | — | Must recheck with server after expiry |
A+Text CompressionAll text resources are compressedPASS
AImage Optimization3 images, 0 KB saveablePASS
A+JS Execution Cost208ms total JS executionPASS
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://app.exonore.fr/ | 88ms | 2ms | 0ms | 1st |
| https://cdn.jsdelivr.net/npm/xlsx@0.18.5/dist/xlsx.full.min.js | 60ms | 43ms | 14ms | 3rd |
| Unattributable | 59ms | 1ms | 0ms | 1st |
A+Font Loading4 fonts (60 KB)PASS
Web fonts
4
60 KB total
Render-blocking
0
of 4
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 HintsNo optimization neededPASS
A+HTTP/3 (QUIC)HTTP/3 advertised via Alt-SvcPASS
A+Document CompressionDocument response uses brotliPASS
A+LCP Image PreloadLCP preload audit not availablePASS
A+Main HTML Cache-ControlMain HTML max-age=0 (≤ 5min) is appropriatePASS
A+Server Response Intelligence2 server-response signal(s) detectedPASS
Asset CompressionNo text asset hosts to measureINFO
Network Waterfall36 requests over 2673msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
jsDelivr cdn.jsdelivr.net | CDN | 60ms | 270 KB | 59% | €1/mo | Optional |
59% of jsDelivr'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
Image Optimization1 images, 308 KB total, 0 KB wastedINFO
Image Optimization Audit
Total Images
1
Total Size
308 KB