Performance
· 15 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.
998 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
3.12 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
501 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.
1.69 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.
6.36 s
Page Load Progression
FPage Weight BudgetAction4.7 MB transferred, 270 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
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
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction4524ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://vercel.com/ | 1820ms | 28ms | 30ms | 3rd |
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/1-65qcxzqctbe.js | 1513ms | 1064ms | 6ms | 3rd |
| Unattributable | 426ms | 15ms | 0ms | 3rd |
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/2e0m6jqy7ljly.js | 396ms | 223ms | 6ms | 3rd |
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/0fp_d96x8-js3.js | 156ms | 14ms | 1ms | 3rd |
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/1l-4u1_f4ddv9.js | 141ms | 0ms | 1ms | 3rd |
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/1f8o-hndgzm-2.js | 71ms | 67ms | 3ms | 3rd |
FJS BundlesAction145 scripts, 1.8 MB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/2v8ocn096msqz.js | 418 KB | 415 KB (100%) | ✓ | 3rd |
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/0nbpg8r2gvzy6.js | 313 KB | 312 KB (100%) | ✓ | 3rd |
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/29k4sdsukttbk.js | 176 KB | 175 KB (100%) | ✓ | 3rd |
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/2qhhacxgmf2tp.js | 132 KB | 131 KB (100%) | ✓ | 3rd |
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/429dyqb5th9wr.js | 99 KB | 98 KB (99%) | ✓ | 3rd |
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/0urlyd8z5tw0q.js | 111 KB | 77 KB (70%) | ✓ | 3rd |
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/1xwg-6kkipjgj.js | 102 KB | 68 KB (69%) | ✓ | 3rd |
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/1z9x4h01yl33f.js | 51 KB | 51 KB (99%) | ✓ | 3rd |
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/235f_4o6yktb1.js | 51 KB | 50 KB (99%) | ✓ | 3rd |
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/3e7u3u-t7m47p.js | 47 KB | 46 KB (99%) | ✓ | 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
FPage Weight InventoryAction270 resources · 4.7 MB · 1.8 MB savings availableFIX
~1.8 MiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 270 resources | 4.7 MiB | ||||||
BImage Optimization34 images, 0 KB saveableREVIEW
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+Font Loading8 fonts (197 KB)PASS
Web fonts
8
197 KB total
Render-blocking
0
of 8
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
Network Waterfall270 requests over 4624msINFO
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 | 1820ms | 92 KB | — | €32/mo | Costly |
vercel.com vercel.com | Other | 1513ms | 64 KB | — | €26/mo | Costly |
Unattributable Unattributable | Other | 426ms | 0 KB | — | €7/mo | Costly |
vercel.com vercel.com | Other | 396ms | 31 KB | — | €7/mo | Costly |
vercel.com vercel.com | Other | 156ms | 22 KB | — | €3/mo | Optional |
vercel.com vercel.com | Other | 141ms | 11 KB | — | €2/mo | Optional |
vercel.com vercel.com | Other | 71ms | 48 KB | 60% | €1/mo | Optional |
These scripts may cost more than they're worth
- vercel.com adds 1820ms and costs ~€32/month
- vercel.com adds 1513ms and costs ~€26/month
- Unattributable adds 426ms and costs ~€7/month
- vercel.com adds 396ms and costs ~€7/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 1820ms 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 1513ms 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 426ms 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 396ms 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
60% of vercel.com'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