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Performance

· 16 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
82
GRADE
B
FIX
2
REVIEW
4
PASS
8
INFO
2

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

Mobile Desktop
36
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
84
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
96
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
100
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.

3.24 s

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

10.11 s

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

1.82 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.

6.15 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.

11.29 s

Page Load Progression

600 ms
1.2 s
1.8 s
2.4 s
3.0 s
3.6 s
4.2 s
4.8 s
Checks
16
8 PASS 4 REVIEW 2 FIX
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 (1.6 MiB of 1.6 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Execution Cost
Action
5025ms total JS execution
FIX
5025ms total JS execution
Warning::
https://vercel.com/_next/static/chunks/0zys9gxbu7o...: 1908ms CPU time
Warning::
Unattributable: 1144ms CPU time
Warning::
https://vercel.com/templates: 628ms CPU time
Warning::
https://vercel.com/_next/static/chunks/turbopack-1...: 403ms CPU time
Info::
https://vercel.com/_next/static/chunks/3acg99_hkxe...: 238ms CPU time
Warning::
Third-party scripts: 5025ms (100% of total)

Main Thread Breakdown

Script Evaluation 50% Other 18% Style & Layout 15% Script Parsing & Compilation 8% Parse HTML & CSS 6%
ScriptTotalScriptingParse/CompileParty
https://vercel.com/_next/static/chunks/0zys9gxbu7opo.js?dpl=dpl_D7a52sP1BY5YFBPfWdXK3AGrWRR91908ms1339ms29ms3rd
Unattributable1144ms261ms0ms3rd
https://vercel.com/templates628ms58ms25ms3rd
https://vercel.com/_next/static/chunks/turbopack-1ei8djbn-vvc6.js?dpl=dpl_D7a52sP1BY5YFBPfWdXK3AGrWRR9403ms400ms2ms3rd
https://vercel.com/_next/static/chunks/3acg99_hkxee-.js?dpl=dpl_D7a52sP1BY5YFBPfWdXK3AGrWRR9238ms228ms10ms3rd
https://vercel.com/_next/static/chunks/turbopack-1536yxyqu8co6.js?dpl=dpl_D7a52sP1BY5YFBPfWdXK3AGrWRR9210ms208ms2ms3rd
https://vercel.com/_next/static/chunks/1mv0663-_y157.js?dpl=dpl_D7a52sP1BY5YFBPfWdXK3AGrWRR9183ms36ms0ms3rd
https://vercel.com/_next/static/chunks/3843mpc1flo3p.css?dpl=dpl_D7a52sP1BY5YFBPfWdXK3AGrWRR9148ms0ms0ms3rd
https://vercel.com/_next/static/chunks/23jow6d422ghv.js?dpl=dpl_D7a52sP1BY5YFBPfWdXK3AGrWRR981ms53ms5ms3rd
https://vercel.com/_next/static/chunks/1st4cvlynsa0l.js?dpl=dpl_D7a52sP1BY5YFBPfWdXK3AGrWRR980ms54ms19ms3rd
C
Page Weight Budget
Action
1.6 MB transferred, 109 requests
REVIEW
1.6 MB transferred, 109 requests
Info::
Page weighs 7.4 MB (1.6 MB transferred)
Warning::
JavaScript is 1.1 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.1 MB
Warning::
109 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.34 g CO2 per page load
1.6 MB / 2.4 MB budget
1.6 MB transferred
109 requests
0.34 g CO2 per page load
JavaScript 1.1 MiB 66%
CSS 162.2 KiB 10%
Images 151.1 KiB 9%
Other 129.0 KiB 8%
Fonts 58.9 KiB 4%
HTML 51.2 KiB 3%
Other 7.0 KiB 0%
Other 2.3 KiB 0%
Other 2.2 KiB 0%
0 2.4 MB 4.9 MB
Approaching limit

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

C
JS Bundles
Action
67 scripts, 166 KB unused
REVIEW
67 scripts, 166 KB unused
Warning::
https://vercel.com/_next/static/chunks/33tke12nwcq...: 52 KB unused (100%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://vercel.com/_next/static/chunks/2k13qj1e_f1...: 44 KB unused (84%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://vercel.com/_next/static/chunks/1st4cvlynsa...: 27 KB unused (58%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://vercel.com/_next/static/chunks/08cs9h3yywb...: 22 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://vercel.com/_next/static/chunks/0no3xvla4_a...: 21 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 166 KB
166 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://vercel.com/_next/static/chunks/33tke12nwcqvl.js?dpl=dpl_D7a52sP1BY5YFBPfWdXK3AGrWRR952 KB52 KB (100%)✓3rd
https://vercel.com/_next/static/chunks/2k13qj1e_f16p.js?dpl=dpl_D7a52sP1BY5YFBPfWdXK3AGrWRR954 KB44 KB (84%)✓3rd
https://vercel.com/_next/static/chunks/1st4cvlynsa0l.js?dpl=dpl_D7a52sP1BY5YFBPfWdXK3AGrWRR948 KB27 KB (58%)✓3rd
https://vercel.com/_next/static/chunks/08cs9h3yywbku.js?dpl=dpl_D7a52sP1BY5YFBPfWdXK3AGrWRR945 KB22 KB (49%)✓3rd
https://vercel.com/_next/static/chunks/0no3xvla4_a94.js?dpl=dpl_D7a52sP1BY5YFBPfWdXK3AGrWRR945 KB21 KB (49%)✓3rd
https://vercel.com/_next/static/chunks/1reigu25kua21.js?dpl=dpl_D7a52sP1BY5YFBPfWdXK3AGrWRR911 KB—✓3rd
https://vercel.com/_next/static/chunks/39rmc0pecz6hv.js?dpl=dpl_D7a52sP1BY5YFBPfWdXK3AGrWRR919 KB—✓3rd
https://vercel.com/_next/static/chunks/2e2nkm_g7z38e.js?dpl=dpl_D7a52sP1BY5YFBPfWdXK3AGrWRR912 KB—✓3rd
https://vercel.com/_next/static/chunks/37b6i29vw7i7f.js?dpl=dpl_D7a52sP1BY5YFBPfWdXK3AGrWRR910 KB—✓3rd
https://vercel.com/_next/static/chunks/3pj3k167tvgq2.js?dpl=dpl_D7a52sP1BY5YFBPfWdXK3AGrWRR911 KB—✓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

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
Image Optimization
17 images, 0 KB saveable
PASS
17 images, 0 KB saveable
Info::
All images are well-optimized
17 images 151 KB
0 oversized -0 KB
2 legacy format
0 missing dimensions CLS risk
A+
Font Loading
2 fonts (59 KB)
PASS
2 fonts (59 KB)
Info::
2 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

2

59 KB total

Render-blocking

0

of 2

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s FCP 3.2 s LCP 10.1 shttps://vercel.com/_next/static/media/797e433ab948586e.p.3f30ggp2vw8zj.woff2?dpl=dpl_D7a52sP1BY5YFBPfWdXK3AGrWRR9797e433ab948586e.p.3f30... https://vercel.com/_next/static/media/797e433ab948586e.p.3f30ggp2vw8zj.woff2?dpl=dpl_D7a52sP1BY5YFBPfWdXK3AGrWRR9 — 30.9 KiB — 0 ms — font-display: swaphttps://vercel.com/_next/static/media/caa3a2e1cccd8315.p.400zotvijr2rn.woff2?dpl=dpl_D7a52sP1BY5YFBPfWdXK3AGrWRR9caa3a2e1cccd8315.p.400z... https://vercel.com/_next/static/media/caa3a2e1cccd8315.p.400zotvijr2rn.woff2?dpl=dpl_D7a52sP1BY5YFBPfWdXK3AGrWRR9 — 28.0 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
caa3a2e1cccd8315.p.400z... woff2 swap
Size 28 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
13 hints, 0 missing preconnects
PASS
13 hints, 0 missing preconnects
Info::
Page uses 13 resource hint(s)

Current Resource Hints

preconnect
2
preload
+1
11
dns-prefetch
—
prefetch
—

13 resource hints configured

A+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
Network Waterfall
109 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 5025ms · 308KB · €55/mo
vercel.com
Other
Costly
Execution 1908ms
Transfer 69 KB
Monthly Cost €21/mo
Unattributable
Other
Costly
Execution 1144ms
Transfer 0 KB
Monthly Cost €12/mo
vercel.com
Other
Costly
Execution 628ms
Transfer 51 KB
Monthly Cost €7/mo
vercel.com
Other
Costly
Execution 403ms
Transfer 5 KB
Monthly Cost €4/mo
vercel.com
Other
Costly
Execution 238ms
Transfer 29 KB
Monthly Cost €3/mo
vercel.com
Other
Costly
Execution 210ms
Transfer 5 KB
Monthly Cost €2/mo
vercel.com
Other
Optional
Execution 183ms
Transfer 2 KB
Monthly Cost €2/mo
vercel.com
Other
Optional
Execution 148ms
Transfer 81 KB
Monthly Cost €2/mo
vercel.com
Other
Optional
Execution 81ms
Transfer 17 KB
Monthly Cost €1/mo
vercel.com
Other
Optional
Execution 80ms
Transfer 48 KB
Unused 58%
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • vercel.com adds 1908ms and costs ~€21/month
  • Unattributable adds 1144ms and costs ~€12/month
  • vercel.com adds 628ms and costs ~€7/month
  • vercel.com adds 403ms and costs ~€4/month
  • vercel.com adds 238ms and costs ~€3/month
  • vercel.com adds 210ms and costs ~€2/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 1908ms 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 1144ms 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 628ms 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 403ms 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 238ms 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 210ms 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

58% 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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