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Performance

· 14 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
82
GRADE
B
FIX
3
REVIEW
4
PASS
5
INFO
2

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

Mobile Desktop
84
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
81
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.

646 ms

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

1.45 s

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

268 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.

1.09 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.

2.19 s

Page Load Progression

375 ms
750 ms
1.1 s
1.5 s
1.9 s
2.2 s
2.6 s
3.0 s
Checks
14
5 PASS 4 REVIEW 3 FIX
D
Page Weight Budget
Action
2.1 MB transferred, 144 requests
FIX
2.1 MB transferred, 144 requests
Info::
Page weighs 21.4 MB (2.1 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::
144 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.44 g CO2 per page load
2.1 MB / 2.4 MB budget
2.1 MB transferred
144 requests
0.44 g CO2 per page load
JavaScript 1.1 MiB 52%
Other 584.8 KiB 27%
CSS 162.1 KiB 8%
Images 160.8 KiB 7%
Fonts 58.9 KiB 3%
HTML 51.2 KiB 2%
Other 7.0 KiB 0%
Other 4.4 KiB 0%
Other 2.3 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

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 (2.1 MiB of 2.1 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
JS Execution Cost
Action
2599ms total JS execution
FIX
2599ms total JS execution
Warning::
Unattributable: 943ms CPU time
Warning::
https://vercel.com/templates: 740ms CPU time
Warning::
https://vercel.com/_next/static/chunks/0zys9gxbu7o...: 587ms CPU time
Info::
https://vercel.com/_next/static/chunks/2mwmduh35l6...: 174ms CPU time
Info::
https://vercel.com/_next/static/chunks/turbopack-1...: 103ms CPU time
Warning::
Third-party scripts: 2599ms (100% of total)

Main Thread Breakdown

Script Evaluation 41% Style & Layout 25% Other 21% Script Parsing & Compilation 4% Parse HTML & CSS 4%
ScriptTotalScriptingParse/CompileParty
Unattributable943ms386ms0ms3rd
https://vercel.com/templates740ms19ms4ms3rd
https://vercel.com/_next/static/chunks/0zys9gxbu7opo.js?dpl=dpl_D7a52sP1BY5YFBPfWdXK3AGrWRR9587ms377ms8ms3rd
https://vercel.com/_next/static/chunks/2mwmduh35l6bk.js?dpl=dpl_D7a52sP1BY5YFBPfWdXK3AGrWRR9174ms122ms6ms3rd
https://vercel.com/_next/static/chunks/turbopack-1ei8djbn-vvc6.js?dpl=dpl_D7a52sP1BY5YFBPfWdXK3AGrWRR9103ms102ms0ms3rd
https://vercel.com/_next/static/chunks/turbopack-1536yxyqu8co6.js?dpl=dpl_D7a52sP1BY5YFBPfWdXK3AGrWRR952ms51ms1ms3rd
B
Image Optimization
38 images, 0 KB saveable
REVIEW
38 images, 0 KB saveable
Info::
All images are well-optimized
38 images 161 KB
0 oversized -0 KB
8 legacy format
0 missing dimensions CLS risk
B
JS Bundles
69 scripts, 145 KB unused
REVIEW
69 scripts, 145 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...: 28 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.
Info::
Total unused JavaScript: 145 KB
145 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_D7a52sP1BY5YFBPfWdXK3AGrWRR949 KB28 KB (58%)✓3rd
https://vercel.com/_next/static/chunks/08cs9h3yywbku.js?dpl=dpl_D7a52sP1BY5YFBPfWdXK3AGrWRR946 KB22 KB (49%)✓3rd
https://vercel.com/_next/static/chunks/36wb8sa-bjjj9.js?dpl=dpl_D7a52sP1BY5YFBPfWdXK3AGrWRR910 KB—✓3rd
https://vercel.com/_next/static/chunks/3iowhizha-tgc.js?dpl=dpl_D7a52sP1BY5YFBPfWdXK3AGrWRR96 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_D7a52sP1BY5YFBPfWdXK3AGrWRR912 KB—✓3rd
https://vercel.com/_next/static/chunks/3pj3k167tvgq2.js?dpl=dpl_D7a52sP1BY5YFBPfWdXK3AGrWRR911 KB—✓3rd
https://vercel.com/_next/static/chunks/3fxy2_brb-mg8.js?dpl=dpl_D7a52sP1BY5YFBPfWdXK3AGrWRR914 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

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
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 500 ms 1.0 s 1.5 s FCP 646 ms LCP 1.4 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
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
Network Waterfall
144 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 2599ms · 175KB · €28/mo
Unattributable
Other
Costly
Execution 943ms
Transfer 0 KB
Monthly Cost €10/mo
vercel.com
Other
Costly
Execution 740ms
Transfer 51 KB
Monthly Cost €8/mo
vercel.com
Other
Costly
Execution 587ms
Transfer 68 KB
Monthly Cost €6/mo
vercel.com
Other
Optional
Execution 174ms
Transfer 44 KB
Monthly Cost €2/mo
vercel.com
Other
Optional
Execution 103ms
Transfer 7 KB
Monthly Cost €1/mo
vercel.com
Other
Optional
Execution 52ms
Transfer 5 KB
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • Unattributable adds 943ms and costs ~€10/month
  • vercel.com adds 740ms and costs ~€8/month
  • vercel.com adds 587ms and costs ~€6/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

Unattributable takes 943ms 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 740ms 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 587ms 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

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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