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Performance

· 14 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
86
GRADE
B
FIX
1
REVIEW
4
PASS
7
INFO
2

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

Mobile Desktop
69
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
100
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.

1.53 s

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

4.83 s

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

497 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.

3.24 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.

4.91 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
7 PASS 4 REVIEW 1 FIX
F
JS Execution Cost
Action
5805ms total JS execution
FIX
5805ms total JS execution
Warning::
https://nextjs.org/_next/static/chunks/0jzm94qus19...: 2037ms CPU time
Warning::
https://nextjs.org/: 1586ms CPU time
Warning::
https://nextjs.org/_next/static/chunks/0q8fapokcqh...: 1063ms CPU time
Warning::
Unattributable: 691ms CPU time
Warning::
https://nextjs.org/_next/static/chunks/40o-_3kv1gk...: 298ms CPU time
Info::
Third-party scripts: 691ms (12% of total)

Main Thread Breakdown

Script Evaluation 36% Other 30% Style & Layout 22% Rendering 7% Script Parsing & Compilation 3%
ScriptTotalScriptingParse/CompileParty
https://nextjs.org/_next/static/chunks/0jzm94qus19um.js?dpl=dpl_76REKkd1QYthvffCGiAYfiJAQnff2037ms1541ms25ms1st
https://nextjs.org/1586ms83ms30ms1st
https://nextjs.org/_next/static/chunks/0q8fapokcqhvs.js?dpl=dpl_76REKkd1QYthvffCGiAYfiJAQnff1063ms190ms4ms1st
Unattributable691ms20ms0ms3rd
https://nextjs.org/_next/static/chunks/40o-_3kv1gk7b.js?dpl=dpl_76REKkd1QYthvffCGiAYfiJAQnff298ms194ms20ms1st
https://nextjs.org/_next/static/chunks/3q8mh8bmyn5n6.js?dpl=dpl_76REKkd1QYthvffCGiAYfiJAQnff79ms49ms17ms1st
https://nextjs.org/_next/static/chunks/1orfi54spy-9q.js?dpl=dpl_76REKkd1QYthvffCGiAYfiJAQnff51ms8ms7ms1st
B
Image Optimization
18 images, 0 KB saveable
REVIEW
18 images, 0 KB saveable
Info::
All images are well-optimized
18 images 227 KB
0 oversized -0 KB
10 legacy format
0 missing dimensions CLS risk
B
JS Bundles
34 scripts, 84 KB unused
REVIEW
34 scripts, 84 KB unused
Warning::
https://nextjs.org/_next/static/chunks/3u5w_3-w5-c...: 34 KB unused (99%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://nextjs.org/_next/static/chunks/40o-_3kv1gk...: 27 KB unused (58%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://nextjs.org/_next/static/chunks/0jzm94qus19...: 23 KB unused (32%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 84 KB
84 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://nextjs.org/_next/static/chunks/3u5w_3-w5-c9r.js?dpl=dpl_76REKkd1QYthvffCGiAYfiJAQnff36 KB34 KB (99%)✓1st
https://nextjs.org/_next/static/chunks/40o-_3kv1gk7b.js?dpl=dpl_76REKkd1QYthvffCGiAYfiJAQnff47 KB27 KB (58%)✓1st
https://nextjs.org/_next/static/chunks/0jzm94qus19um.js?dpl=dpl_76REKkd1QYthvffCGiAYfiJAQnff73 KB23 KB (32%)✓1st
https://nextjs.org/_next/static/chunks/0q8fapokcqhvs.js?dpl=dpl_76REKkd1QYthvffCGiAYfiJAQnff14 KB—✓1st
https://nextjs.org/_next/static/chunks/0ex1ebvvwlx1p.js?dpl=dpl_76REKkd1QYthvffCGiAYfiJAQnff17 KB—✓1st
https://nextjs.org/_next/static/chunks/0rti35c27r9vv.js?dpl=dpl_76REKkd1QYthvffCGiAYfiJAQnff1 KB—✓1st
https://nextjs.org/_next/static/chunks/3czh3m16viwim.js?dpl=dpl_76REKkd1QYthvffCGiAYfiJAQnff9 KB—✓1st
https://nextjs.org/_next/static/chunks/3hetyynb8n07-.js?dpl=dpl_76REKkd1QYthvffCGiAYfiJAQnff9 KB—✓1st
https://nextjs.org/_next/static/chunks/2xcjob_dpr2i-.js?dpl=dpl_76REKkd1QYthvffCGiAYfiJAQnff12 KB—✓1st
https://nextjs.org/_next/static/chunks/3h3oci6el5kdq.js?dpl=dpl_76REKkd1QYthvffCGiAYfiJAQnff12 KB—✓1st

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
Page Weight Budget
1.0 MB transferred, 89 requests
PASS
1.0 MB transferred, 89 requests
Info::
Page weighs 3.2 MB (1.0 MB transferred)
Warning::
JavaScript is 515 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 515 KB
Info::
89 HTTP requests
Info::
Estimated 0.21 g CO2 per page load
1.0 MB / 2.4 MB budget
1.0 MB transferred
89 requests
0.21 g CO2 per page load
JavaScript 514.8 KiB 50%
Images 227.4 KiB 22%
Other 100.1 KiB 10%
CSS 88.4 KiB 9%
Fonts 60.3 KiB 6%
HTML 37.2 KiB 4%
Other 3.2 KiB 0%
Other 1.9 KiB 0%
0 2.4 MB 4.9 MB
Under 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

A+
Third-Party Impact
1% third-party, 0 ms blocking
PASS
1% third-party, 0 ms blocking
Info::
Third-party code accounts for 1% of page weight (7.2 KiB of 1.0 MiB)
Info::
Third-party blocking time is low (0 ms)
99%
First-party Third-party
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 (60 KB)
PASS
2 fonts (60 KB)
Info::
2 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

2

60 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 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s FCP 1.5 s LCP 4.8 shttps://nextjs.org/_next/static/media/797e433ab948586e.p.3f30ggp2vw8zj.woff2?dpl=dpl_76REKkd1QYthvffCGiAYfiJAQnff797e433ab948586e.p.3f30... https://nextjs.org/_next/static/media/797e433ab948586e.p.3f30ggp2vw8zj.woff2?dpl=dpl_76REKkd1QYthvffCGiAYfiJAQnff — 30.9 KiB — 0 ms — font-display: swaphttps://nextjs.org/_next/static/media/caa3a2e1cccd8315.p.400zotvijr2rn.woff2?dpl=dpl_76REKkd1QYthvffCGiAYfiJAQnffcaa3a2e1cccd8315.p.400z... https://nextjs.org/_next/static/media/caa3a2e1cccd8315.p.400zotvijr2rn.woff2?dpl=dpl_76REKkd1QYthvffCGiAYfiJAQnff — 29.4 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 29 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
4 hints, 0 missing preconnects
PASS
4 hints, 0 missing preconnects
Info::
Page uses 4 resource hint(s)

Current Resource Hints

preconnect
—
preload
4
dns-prefetch
—
prefetch
—

4 resource hints configured

Network Waterfall
89 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
12% of JavaScript execution is third-party
First-party Third-party 691ms · 0KB · €8/mo
Unattributable
Other
Costly
Execution 691ms
Transfer 0 KB
Monthly Cost €8/mo

These scripts may cost more than they're worth

  • Unattributable adds 691ms and costs ~€8/month

Unattributable takes 691ms 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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