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Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
93
GRADE
A
FIX
0
REVIEW
4
PASS
11
INFO
2

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

Mobile Desktop
95
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
91
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
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.

1.70 s

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

2.41 s

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

142 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.

2.23 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.

4.52 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
17
11 PASS 4 REVIEW
B
Image Optimization
3 images, 0 KB saveable
REVIEW
3 images, 0 KB saveable
Warning::
https://codeberg.org/assets/img/logo-250px.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
3 images 30 KB
0 oversized -0 KB
3 legacy format
1 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

B
JS Execution Cost
876ms total JS execution
REVIEW
876ms total JS execution
Warning::
https://codeberg.org/assets/js/index.js?v=15.0.0-7...: 375ms CPU time
Warning::
https://codeberg.org/: 265ms CPU time
Info::
Unattributable: 235ms CPU time
Info::
Third-party scripts: 235ms (27% of total)

Main Thread Breakdown

Script Evaluation 30% Other 26% Style & Layout 19% Script Parsing & Compilation 17% Parse HTML & CSS 6%
ScriptTotalScriptingParse/CompileParty
https://codeberg.org/assets/js/index.js?v=15.0.0-73-390b9f2d~gitea-1.22.0375ms228ms143ms1st
https://codeberg.org/265ms7ms2ms1st
Unattributable235ms8ms0ms3rd
C
JS Bundles
Action
2 scripts, 277 KB unused
REVIEW
2 scripts, 277 KB unused
Warning::
https://codeberg.org/assets/js/index.js?v=15.0.0-7...: 253 KB unused (73%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://codeberg.org/assets/js/webcomponents.js?v=...: 24 KB unused (89%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 277 KB
277 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://codeberg.org/assets/js/index.js?v=15.0.0-73-390b9f2d~gitea-1.22.0348 KB253 KB (73%)✓1st
https://codeberg.org/assets/js/webcomponents.js?v=15.0.0-73-390b9f2d~gitea-1.22.027 KB24 KB (89%)✓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

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

max-age=0, private, must-revalidate, no-transform

DirectiveValueMeaning
max-age0Cache for 0 seconds
private—Only browser cache, not CDN/proxy
must-revalidate—Must recheck with server after expiry
no-transform—
A+
Page Weight Budget
512 KB transferred, 12 requests
PASS
512 KB transferred, 12 requests
Info::
Page weighs 1.7 MB (512 KB transferred)
Info::
12 HTTP requests
Info::
Estimated 0.10 g CO2 per page load
512 KB / 2.4 MB budget
512 KB transferred
12 requests
0.10 g CO2 per page load
JavaScript 375.6 KiB 73%
CSS 70.1 KiB 14%
HTML 32.2 KiB 6%
Images 30.4 KiB 6%
Other 3.6 KiB 1%
Other 446 B 0%
0 2.4 MB 4.9 MB
Under budget
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 (6.1 KiB of 512.4 KiB)
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
No web fonts (system fonts)
PASS
No web fonts (system fonts)
Info::
No web fonts loaded — system fonts are fastest
No web fonts loaded — system fonts are optimal.
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
A+
Page Weight Inventory
12 resources · 512 KB · 277 KB savings available
PASS
12 resources · 512 KB · 277 KB savings available
Info::
Within 1MB page-weight target
Got: 512 KB
Info::
~277 KB of savings available
Info::
1 third-party resources (1% of weight)
Info::
1 resources over 200KB
12 resources · 512.4 KiB · 1 third-party Within 1MB page-weight target
JavaScript 73% · 375.6 KiB
CSS 14% · 70.1 KiB
Image 7% · 34.0 KiB
Document 6% · 32.2 KiB
Other 0% · 446 B

~277.0 KiB of savings available

Remove unused JavaScript: 277.0 KiB
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
A+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: netcup GmbH

Network Waterfall
12 requests over 2061ms
INFO
0 ms 500 ms 1.0 s 1.5 s 2.0 s 2.5 s FCP 1.7 s LCP 2.4 shttps://codeberg.org// https://codeberg.org/ — 200 — 32.2 KiB — 653 ms — h2https://codeberg.org/assets/js/webcomponents.js?v=15.0.0-73-390b9f2d~gitea-1.22.0/assets/js/webcomponents.js?v=15.0.... https://codeberg.org/assets/js/webcomponents.js?v=15.0.0-73-390b9f2d~gitea-1.22.0 — 200 — 27.3 KiB — 484 ms — h2https://codeberg.org/assets/css/index.css?v=15.0.0-73-390b9f2d~gitea-1.22.0/assets/css/index.css?v=15.0.0-73-3... https://codeberg.org/assets/css/index.css?v=15.0.0-73-390b9f2d~gitea-1.22.0 — 200 — 62.5 KiB — 457 ms — h2https://codeberg.org/assets/css/theme-codeberg-auto.css?v=15.0.0-73-390b9f2d~gitea-1.22.0/assets/css/theme-codeberg-auto.css... https://codeberg.org/assets/css/theme-codeberg-auto.css?v=15.0.0-73-390b9f2d~gitea-1.22.0 — 200 — 5.6 KiB — 294 ms — h2https://codeberg.org/manifest.json/manifest.json https://codeberg.org/manifest.json — 200 — 446 B — 322 ms — h3https://codeberg.org/assets/css/homepage.css?v=15.0.0-73-390b9f2d~gitea-1.22.0/assets/css/homepage.css?v=15.0.0-7... https://codeberg.org/assets/css/homepage.css?v=15.0.0-73-390b9f2d~gitea-1.22.0 — 200 — 2.0 KiB — 337 ms — h2https://codeberg.org/assets/img/logo-250px.png/assets/img/logo-250px.png https://codeberg.org/assets/img/logo-250px.png — 200 — 13.7 KiB — 342 ms — h2https://codeberg.org/assets/img/logo-250px-dark.png/assets/img/logo-250px-dark.png https://codeberg.org/assets/img/logo-250px-dark.png — 200 — 10.6 KiB — 157 ms — h3https://codeberg.org/assets/js/index.js?v=15.0.0-73-390b9f2d~gitea-1.22.0/assets/js/index.js?v=15.0.0-73-390... https://codeberg.org/assets/js/index.js?v=15.0.0-73-390b9f2d~gitea-1.22.0 — 200 — 348.3 KiB — 639 ms — h3https://design.codeberg.org/logo-kit/icon_inverted.svgdesign.codeberg.org/logo-kit/icon_i... https://design.codeberg.org/logo-kit/icon_inverted.svg — 200 — 6.1 KiB — 500 ms — h2https://codeberg.org/assets/img/favicon.png/assets/img/favicon.png https://codeberg.org/assets/img/favicon.png — 200 — 2.3 KiB — 156 ms — h3https://codeberg.org/assets/img/favicon.svg/assets/img/favicon.svg https://codeberg.org/assets/img/favicon.svg — 200 — 1.3 KiB — 156 ms — h3
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
27% of JavaScript execution is third-party
First-party Third-party 235ms · 0KB · €3/mo
Unattributable
Other
Costly
Execution 235ms
Transfer 0 KB
Monthly Cost €3/mo

These scripts may cost more than they're worth

  • Unattributable adds 235ms and costs ~€3/month

Unattributable takes 235ms 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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