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Performance

· 14 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
76
GRADE
C
FIX
4
REVIEW
3
PASS
5
INFO
2

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

Mobile Desktop
62
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
77
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
92
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

963 ms

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

2.80 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

482 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.

1.23 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.

5.56 s

Page Load Progression

535 ms
1.1 s
1.6 s
2.1 s
2.7 s
3.2 s
3.7 s
4.3 s
Checks
14
5 PASS 3 REVIEW 4 FIX
F
Page Weight Budget
Action
4.7 MB transferred, 273 requests
FIX
4.7 MB transferred, 273 requests
Critical::
Page weighs 19.9 MB (4.7 MB transferred)
Warning::
JavaScript is 3.4 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 3.4 MB
Warning::
273 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.98 g CO2 per page load
4.7 MB / 2.4 MB budget
4.7 MB transferred
273 requests
0.98 g CO2 per page load
JavaScript 3.4 MiB 73%
Other 684.9 KiB 14%
Fonts 197.2 KiB 4%
CSS 178.1 KiB 4%
Other 95.7 KiB 2%
HTML 95.4 KiB 2%
Images 49.7 KiB 1%
Other 5.3 KiB 0%
Other 2.5 KiB 0%
Other 2.2 KiB 0%
0 2.4 MB 4.9 MB
Over budget

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Why this matters

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.

Why this matters

High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.

Source: web.dev

D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (4.7 MiB of 4.7 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Execution Cost
Action
4405ms total JS execution
FIX
4405ms total JS execution
Warning::
https://vercel.com/: 1725ms CPU time
Warning::
https://vercel.com/vc-ap-vercel-marketing/_next/st...: 1484ms CPU time
Warning::
Unattributable: 383ms CPU time
Warning::
https://vercel.com/vc-ap-vercel-marketing/_next/st...: 314ms CPU time
Info::
https://vercel.com/vc-ap-vercel-marketing/_next/st...: 194ms CPU time
Warning::
Third-party scripts: 4405ms (100% of total)

Main Thread Breakdown

Script Evaluation 32% Style & Layout 32% Other 22% Script Parsing & Compilation 9% Rendering 3%
ScriptTotalScriptingParse/CompileParty
https://vercel.com/1725ms79ms42ms3rd
https://vercel.com/vc-ap-vercel-marketing/_next/static/chunks/37d1_i0u8i3xo.js?dpl=dpl_Co485LAgXH9s8bLjnpK453vASoke1484ms1029ms7ms3rd
Unattributable383ms18ms0ms3rd
https://vercel.com/vc-ap-vercel-marketing/_next/static/chunks/2zf8vptczjdlv.js?dpl=dpl_Co485LAgXH9s8bLjnpK453vASoke314ms205ms4ms3rd
https://vercel.com/vc-ap-vercel-marketing/_next/static/chunks/058ckypce3zlz.js?dpl=dpl_Co485LAgXH9s8bLjnpK453vASoke194ms16ms2ms3rd
https://vercel.com/vc-ap-vercel-marketing/_next/static/chunks/2sv0t1sgn9uzi.js?dpl=dpl_Co485LAgXH9s8bLjnpK453vASoke171ms0ms1ms3rd
https://vercel.com/vc-ap-vercel-marketing/_next/static/chunks/32lgw2bkpzylx.js?dpl=dpl_Co485LAgXH9s8bLjnpK453vASoke81ms75ms5ms3rd
https://vercel.com/vc-ap-vercel-marketing/_next/static/chunks/0x64_ot0mviey.js?dpl=dpl_Co485LAgXH9s8bLjnpK453vASoke53ms1ms51ms3rd
F
JS Bundles
Action
147 scripts, 1.8 MB unused
FIX
147 scripts, 1.8 MB unused
Warning::
https://vercel.com/vc-ap-vercel-marketing/_next/st...: 407 KB unused (100%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://vercel.com/vc-ap-vercel-marketing/_next/st...: 313 KB unused (100%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://vercel.com/vc-ap-vercel-marketing/_next/st...: 175 KB unused (100%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://vercel.com/vc-ap-vercel-marketing/_next/st...: 132 KB unused (100%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://vercel.com/vc-ap-vercel-marketing/_next/st...: 98 KB unused (99%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 1.8 MB
1813 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://vercel.com/vc-ap-vercel-marketing/_next/static/chunks/0x64_ot0mviey.js?dpl=dpl_Co485LAgXH9s8bLjnpK453vASoke409 KB407 KB (100%)✓3rd
https://vercel.com/vc-ap-vercel-marketing/_next/static/chunks/0q8180u_mxopj.js?dpl=dpl_Co485LAgXH9s8bLjnpK453vASoke313 KB313 KB (100%)✓3rd
https://vercel.com/vc-ap-vercel-marketing/_next/static/chunks/289licdj1nrl4.js?dpl=dpl_Co485LAgXH9s8bLjnpK453vASoke176 KB175 KB (100%)✓3rd
https://vercel.com/vc-ap-vercel-marketing/_next/static/chunks/2afi4wovqd8-o.js?dpl=dpl_Co485LAgXH9s8bLjnpK453vASoke132 KB132 KB (100%)✓3rd
https://vercel.com/vc-ap-vercel-marketing/_next/static/chunks/2_vjjytq56jp1.js?dpl=dpl_Co485LAgXH9s8bLjnpK453vASoke99 KB98 KB (99%)✓3rd
https://vercel.com/vc-ap-vercel-marketing/_next/static/chunks/2-nx4ha8vcwix.js?dpl=dpl_Co485LAgXH9s8bLjnpK453vASoke111 KB77 KB (70%)✓3rd
https://vercel.com/vc-ap-vercel-marketing/_next/static/chunks/2pcu9qolsn0i1.js?dpl=dpl_Co485LAgXH9s8bLjnpK453vASoke87 KB63 KB (75%)✓3rd
https://vercel.com/vc-ap-vercel-marketing/_next/static/chunks/1-32ef6nc590x.js?dpl=dpl_Co485LAgXH9s8bLjnpK453vASoke52 KB51 KB (99%)✓3rd
https://vercel.com/vc-ap-vercel-marketing/_next/static/chunks/1c6_8h4a28691.js?dpl=dpl_Co485LAgXH9s8bLjnpK453vASoke51 KB51 KB (99%)✓3rd
https://vercel.com/vc-ap-vercel-marketing/_next/static/chunks/3xgs608mq4ie3.js?dpl=dpl_Co485LAgXH9s8bLjnpK453vASoke47 KB47 KB (99%)✓3rd

Consider code splitting or tree shaking to reduce unused code.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

B
Image Optimization
36 images, 0 KB saveable
REVIEW
36 images, 0 KB saveable
Info::
All images are well-optimized
36 images 50 KB
0 oversized -0 KB
36 legacy format
0 missing dimensions CLS risk
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

B
HTTP Caching
public, max-age=0, must-revalidate
REVIEW
public, max-age=0, must-revalidate
Info::
Cache-Control header is set
Got: public, max-age=0, must-revalidate
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

public, max-age=0, must-revalidate

DirectiveValueMeaning
public—Any cache may store this response
max-age0Cache for 0 seconds
must-revalidate—Must recheck with server after expiry
A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+
Font Loading
8 fonts (197 KB)
PASS
8 fonts (197 KB)
Info::
8 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

8

197 KB total

Render-blocking

0

of 8

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s 1.5 s 2.0 s 2.5 s FCP 963 ms LCP 2.8 shttps://vercel.com/vc-ap-vercel-marketing/_next/static/media/797e433ab948586e.p.3f30ggp2vw8zj.woff2?dpl=dpl_Co485LAgXH9s8bLjnpK453vASoke797e433ab948586e.p.3f30... https://vercel.com/vc-ap-vercel-marketing/_next/static/media/797e433ab948586e.p.3f30ggp2vw8zj.woff2?dpl=dpl_Co485LAgXH9s8bLjnpK453vASoke — 31.0 KiB — 0 ms — font-display: swaphttps://vercel.com/vc-ap-vercel-marketing/_next/static/media/GeistPixel_Circle.p.0jixsyww9kd4y.woff2?dpl=dpl_Co485LAgXH9s8bLjnpK453vASokeGeistPixel_Circle.p.0ji... https://vercel.com/vc-ap-vercel-marketing/_next/static/media/GeistPixel_Circle.p.0jixsyww9kd4y.woff2?dpl=dpl_Co485LAgXH9s8bLjnpK453vASoke — 27.7 KiB — 0 ms — font-display: swaphttps://vercel.com/vc-ap-vercel-marketing/_next/static/media/GeistPixel_Grid.p.30wdobjl9hgxl.woff2?dpl=dpl_Co485LAgXH9s8bLjnpK453vASokeGeistPixel_Grid.p.30wdo... https://vercel.com/vc-ap-vercel-marketing/_next/static/media/GeistPixel_Grid.p.30wdobjl9hgxl.woff2?dpl=dpl_Co485LAgXH9s8bLjnpK453vASoke — 28.2 KiB — 0 ms — font-display: swaphttps://vercel.com/vc-ap-vercel-marketing/_next/static/media/GeistPixel_Line.p.0rlph12vacpf4.woff2?dpl=dpl_Co485LAgXH9s8bLjnpK453vASokeGeistPixel_Line.p.0rlph... https://vercel.com/vc-ap-vercel-marketing/_next/static/media/GeistPixel_Line.p.0rlph12vacpf4.woff2?dpl=dpl_Co485LAgXH9s8bLjnpK453vASoke — 18.0 KiB — 0 ms — font-display: swaphttps://vercel.com/vc-ap-vercel-marketing/_next/static/media/GeistPixel_Square.p.2k-0ab8oywfv4.woff2?dpl=dpl_Co485LAgXH9s8bLjnpK453vASokeGeistPixel_Square.p.2k-... https://vercel.com/vc-ap-vercel-marketing/_next/static/media/GeistPixel_Square.p.2k-0ab8oywfv4.woff2?dpl=dpl_Co485LAgXH9s8bLjnpK453vASoke — 28.2 KiB — 0 ms — font-display: swaphttps://vercel.com/vc-ap-vercel-marketing/_next/static/media/GeistPixel_Triangle.p.0qs0n6zg5c5u1.woff2?dpl=dpl_Co485LAgXH9s8bLjnpK453vASokeGeistPixel_Triangle.p.0... https://vercel.com/vc-ap-vercel-marketing/_next/static/media/GeistPixel_Triangle.p.0qs0n6zg5c5u1.woff2?dpl=dpl_Co485LAgXH9s8bLjnpK453vASoke — 28.5 KiB — 0 ms — font-display: swaphttps://vercel.com/vc-ap-vercel-marketing/_next/static/media/caa3a2e1cccd8315.p.400zotvijr2rn.woff2?dpl=dpl_Co485LAgXH9s8bLjnpK453vASokecaa3a2e1cccd8315.p.400z... https://vercel.com/vc-ap-vercel-marketing/_next/static/media/caa3a2e1cccd8315.p.400zotvijr2rn.woff2?dpl=dpl_Co485LAgXH9s8bLjnpK453vASoke — 28.0 KiB — 0 ms — font-display: swaphttps://vercel.com/vc-ap-vercel-marketing/_next/static/media/9d9927955a95a20d-s.p.0i8f_s95odn18.woff2?dpl=dpl_Co485LAgXH9s8bLjnpK453vASoke9d9927955a95a20d-s.p.0i... https://vercel.com/vc-ap-vercel-marketing/_next/static/media/9d9927955a95a20d-s.p.0i8f_s95odn18.woff2?dpl=dpl_Co485LAgXH9s8bLjnpK453vASoke — 7.5 KiB — 0 ms — font-display: swap
797e433ab948586e.p.3f30... woff2 swap
Size 31 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
GeistPixel_Circle.p.0ji... woff2 swap
Size 28 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
GeistPixel_Grid.p.30wdo... woff2 swap
Size 28 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
GeistPixel_Line.p.0rlph... woff2 swap
Size 18 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
GeistPixel_Square.p.2k-... woff2 swap
Size 28 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
GeistPixel_Triangle.p.0... woff2 swap
Size 28 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
caa3a2e1cccd8315.p.400z... woff2 swap
Size 28 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
9d9927955a95a20d-s.p.0i... woff2 swap
Size 7 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
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 Caching
All resources properly cached
PASS
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+
Critical Rendering Path
No render-blocking resources
PASS
No render-blocking resources
Info::
No render-blocking resources detected
A+
Resource Hints
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
Network Waterfall
273 requests over 0ms
INFO

Performance analysis not available for this result.

Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
100% of JavaScript execution is third-party
First-party Third-party 4405ms · 680KB · €48/mo
vercel.com
Other
Costly
Execution 1725ms
Transfer 95 KB
Monthly Cost €19/mo
vercel.com
Other
Costly
Execution 1484ms
Transfer 64 KB
Monthly Cost €16/mo
Unattributable
Other
Costly
Execution 383ms
Transfer 0 KB
Monthly Cost €4/mo
vercel.com
Other
Costly
Execution 314ms
Transfer 30 KB
Monthly Cost €3/mo
vercel.com
Other
Optional
Execution 194ms
Transfer 22 KB
Monthly Cost €2/mo
vercel.com
Other
Optional
Execution 171ms
Transfer 11 KB
Monthly Cost €2/mo
vercel.com
Other
Optional
Execution 81ms
Transfer 48 KB
Monthly Cost €1/mo
vercel.com
Other
Optional
Execution 53ms
Transfer 409 KB
Unused 100%
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • vercel.com adds 1725ms and costs ~€19/month
  • vercel.com adds 1484ms and costs ~€16/month
  • Unattributable adds 383ms and costs ~€4/month
  • vercel.com adds 314ms and costs ~€3/month

100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

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 1725ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

vercel.com takes 1484ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Unattributable takes 383ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

vercel.com takes 314ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

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.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

How third-party costs are calculated

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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