Performance
· 25 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.
4.50 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
6.96 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1.92 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.001
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
4.50 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.
14.63 s
Page Load Progression
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction5919ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/285j93odz-mc6.js | 3150ms | 2505ms | 47ms | 3rd |
| https://vercel.com/ | 1157ms | 147ms | 156ms | 3rd |
| Unattributable | 629ms | 21ms | 0ms | 3rd |
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/1jzv8nh4kvk-b.js | 276ms | 253ms | 20ms | 3rd |
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/2n1seda456yr8.js | 241ms | 134ms | 28ms | 3rd |
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/2yp89-bm2g-hn.js | 207ms | 200ms | 6ms | 3rd |
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/2m1696-0wail1.js | 197ms | 4ms | 12ms | 3rd |
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/3jkxo9l_98jpm.css | 61ms | 0ms | 0ms | 3rd |
DJS BundlesAction80 scripts, 368 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/0-yecpdkl3vib.js | 102 KB | 68 KB (69%) | ✓ | 3rd |
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/3m3duol34qvrp.js | 63 KB | 49 KB (78%) | ✓ | 3rd |
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/2tnyci7ul9ujx.js | 51 KB | 39 KB (83%) | ✓ | 3rd |
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/2-ps3j9g79j1c.js | 33 KB | 32 KB (99%) | ✓ | 3rd |
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/2_j8wuiqfyszj.js | 36 KB | 27 KB (75%) | ✓ | 3rd |
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/04rh4d4an7qnl.js | 27 KB | 27 KB (100%) | ✓ | 3rd |
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/3i232-eoz6nwc.js | 27 KB | 27 KB (99%) | ✓ | 3rd |
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/0d_c5upx5wk18.js | 30 KB | 26 KB (89%) | ✓ | 3rd |
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/03bh8a1gjhil-.js | 28 KB | 26 KB (92%) | ✓ | 3rd |
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/25-1zn0yv5qp-.js | 24 KB | 24 KB (98%) | ✓ | 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 InventoryAction117 resources · 1.7 MB · 368 KB savings availableFIX
~367.7 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 117 resources | 1.7 MiB | ||||||
CPage Weight BudgetAction1.7 MB transferred, 117 requestsREVIEW
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
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.
Source: web.dev
BHTTP/3 (QUIC)HTTP/3 not advertisedREVIEW
CCompression AlgorithmActionMain response served uncompressedREVIEW
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
BJavaScript Blocking2 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
A+Image Optimization1 images, 0 KB saveablePASS
A+Font Loading3 fonts (59 KB)PASS
Web fonts
3
59 KB total
Render-blocking
0
of 3
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
AResource Hints6 hints, 0 missing preconnectsPASS
Current Resource Hints
6 resource hints configured
Fonts are always fetched as crossorigin=anonymous; a preload without the attribute creates a different cache key, so the browser refetches when the actual font request happens. Sample: /vc-ap-vercel-marketing/_next/static/immutable/media/797e433ab948586e.p.3f30ggp2vw8zj.woff2, /vc-ap-vercel-marketing/_next/static/immutable/media/caa3a2e1cccd8315.p.400zotvijr2rn.woff2. Add `crossorigin` (or `crossorigin="anonymous"`) to each preload.
Performance issues directly impact user engagement and conversion rates.
A+LCP Image PreloadLCP preload audit not availablePASS
A+Main HTML Cache-ControlMain HTML max-age=0 (≤ 5min) is appropriatePASS
A+Server Response Intelligence1 server-response signal(s) detectedPASS
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
ACSS Performance Depth1 CSS depth issue(s) detectedPASS
Network Waterfall117 requests over 2671msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
vercel.com vercel.com | Other | 3150ms | 64 KB | — | €55/mo | Costly |
vercel.com vercel.com | Other | 1157ms | 51 KB | — | €20/mo | Costly |
Unattributable Unattributable | Other | 629ms | 0 KB | — | €11/mo | Costly |
vercel.com vercel.com | Other | 276ms | 48 KB | — | €5/mo | Costly |
vercel.com vercel.com | Other | 241ms | 31 KB | — | €4/mo | Costly |
vercel.com vercel.com | Other | 207ms | 11 KB | — | €4/mo | Costly |
vercel.com vercel.com | Other | 197ms | 27 KB | — | €3/mo | Optional |
vercel.com vercel.com | Other | 61ms | 87 KB | — | €1/mo | Optional |
These scripts may cost more than they're worth
- vercel.com adds 3150ms and costs ~€55/month
- vercel.com adds 1157ms and costs ~€20/month
- Unattributable adds 629ms and costs ~€11/month
- vercel.com adds 276ms and costs ~€5/month
- vercel.com adds 241ms and costs ~€4/month
- vercel.com adds 207ms and costs ~€4/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
vercel.com takes 3150ms 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
vercel.com takes 1157ms 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
Unattributable takes 629ms 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
vercel.com takes 276ms 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
vercel.com takes 241ms 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
vercel.com takes 207ms 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