Performance
· 27 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.
1.26 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
3.66 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
228 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.008
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
2.21 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.
7.18 s
Page Load Progression
DPage Weight BudgetAction2.5 MB transferred, 37 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 ImpactAction77% third-party, 0 ms blockingFIX
FJS BundlesAction16 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 |
| blob:https://challenges.cloudflare.com/bd7dde62-407f-489c-a750-96d15ce4da43 | 0 KB | — | ✓ | 3rd |
| https://app.exonore.fr/events.js | 2 KB | — | ✓ | 1st |
| https://challenges.cloudflare.com/turnstile/v0/g/4df4a60fa397/api.js | 28 KB | — | ✓ | 3rd |
| blob:https://challenges.cloudflare.com/d050b6e8-8a60-4d1b-8a02-555f7e2ae270 | 0 KB | — | ✓ | 3rd |
| https://cdnjs.cloudflare.com/ajax/libs/jspdf-autotable/3.8.2/jspdf.plugin.autotable.min.js | 11 KB | — | ✓ | 3rd |
| blob:https://challenges.cloudflare.com/b1c2bec6-0079-4381-8c0a-ea05053386a3 | -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 InventoryAction37 resources · 2.5 MB · 344 KB savings availableFIX
~344.2 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 37 resources | 2.5 MiB | ||||||
CJS Execution CostAction1243ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://app.exonore.fr/ | 359ms | 7ms | 1ms | 1st |
| Unattributable | 312ms | 5ms | 0ms | 1st |
| https://cdn.jsdelivr.net/npm/xlsx@0.18.5/dist/xlsx.full.min.js | 250ms | 179ms | 59ms | 3rd |
| https://challenges.cloudflare.com/turnstile/v0/api.js?render=explicit&onload=onTurnstileApiLoad | 132ms | 117ms | 6ms | 3rd |
| https://app.exonore.fr/script.js?v=14 | 131ms | 29ms | 34ms | 1st |
| https://cdnjs.cloudflare.com/ajax/libs/jspdf/2.5.1/jspdf.umd.min.js | 59ms | 32ms | 27ms | 3rd |
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
BJavaScript Blocking1 JS blocking issue(s) detectedREVIEW
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 Optimization2 images, 0 KB saveablePASS
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
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
A+CSS Performance DepthNo CSS performance depth issues detectedPASS
Asset CompressionNo text asset hosts to measureINFO
Network Waterfall37 requests over 2899msINFO
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 | 250ms | 270 KB | 59% | €3/mo | Costly |
challenges.cloudflare.com challenges.cloudflare.com | Other | 132ms | 0 KB | — | €1/mo | Optional |
cdnjs cdnjs.cloudflare.com | CDN | 59ms | 94 KB | 83% | €1/mo | Optional |
These scripts may cost more than they're worth
- jsDelivr adds 250ms and costs ~€3/month
jsDelivr takes 250ms 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
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
83% of cdnjs'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