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.
6.17 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
18.36 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
2.23 s
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.
7.26 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.
19.09 s
Page Load Progression
DPage Weight BudgetAction2.5 MB transferred, 132 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 CostAction6846ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/1-65qcxzqctbe.js | 3565ms | 2799ms | 21ms | 3rd |
| https://vercel.com/ | 1570ms | 176ms | 239ms | 3rd |
| Unattributable | 800ms | 22ms | 0ms | 3rd |
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/1f8o-hndgzm-2.js | 215ms | 192ms | 19ms | 3rd |
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/2e0m6jqy7ljly.js | 210ms | 125ms | 27ms | 3rd |
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/0fp_d96x8-js3.js | 166ms | 5ms | 6ms | 3rd |
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/2v8ocn096msqz.js | 154ms | 2ms | 151ms | 3rd |
| https://vercel.com/3628f7ea4ecd82e3/script.js | 99ms | 94ms | 1ms | 3rd |
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/1l-4u1_f4ddv9.js | 68ms | 11ms | 6ms | 3rd |
FJS BundlesAction84 scripts, 858 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/2v8ocn096msqz.js | 418 KB | 415 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/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/0p4kaafh2wtb5.js | 50 KB | 39 KB (83%) | ✓ | 3rd |
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/13atrcwey96d2.js | 37 KB | 30 KB (83%) | ✓ | 3rd |
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/1nj6mvy5zl9j2.js | 36 KB | 27 KB (75%) | ✓ | 3rd |
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/2-s84n78n6gfg.js | 27 KB | 27 KB (99%) | ✓ | 3rd |
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/13iwodg_oya6l.js | 27 KB | 27 KB (100%) | ✓ | 3rd |
| https://vercel.com/vc-ap-vercel-marketing/_next/static/immutable/chunks/44h9p3yjpqrcq.js | 27 KB | 26 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 InventoryAction132 resources · 2.5 MB · 858 KB savings availableFIX
~858.0 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 132 resources | 2.5 MiB | ||||||
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 Optimization3 images, 0 KB saveablePASS
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 Hints18 hints, 0 missing preconnectsPASS
Current Resource Hints
18 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall132 requests over 2569msINFO
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 | 3565ms | 64 KB | — | €62/mo | Costly |
vercel.com vercel.com | Other | 1570ms | 70 KB | — | €27/mo | Costly |
Unattributable Unattributable | Other | 800ms | 0 KB | — | €14/mo | Costly |
vercel.com vercel.com | Other | 215ms | 48 KB | — | €4/mo | Costly |
vercel.com vercel.com | Other | 210ms | 31 KB | — | €4/mo | Costly |
vercel.com vercel.com | Other | 166ms | 22 KB | — | €3/mo | Optional |
vercel.com vercel.com | Other | 154ms | 418 KB | 100% | €3/mo | Optional |
vercel.com vercel.com | Other | 99ms | 5 KB | — | €2/mo | Optional |
vercel.com vercel.com | Other | 68ms | 11 KB | — | €1/mo | Optional |
These scripts may cost more than they're worth
- vercel.com adds 3565ms and costs ~€62/month
- vercel.com adds 1570ms and costs ~€27/month
- Unattributable adds 800ms and costs ~€14/month
- vercel.com adds 215ms and costs ~€4/month
- vercel.com adds 210ms 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 3565ms 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 1570ms 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 800ms 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 215ms 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 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
100% 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