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Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
98
GRADE
A+
FIX
1
REVIEW
1
PASS
13
INFO
2

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

Mobile Desktop
98
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
80
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
77
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.

1.40 s

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

2.30 s

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

0 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.

1.40 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.

2.30 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
13 PASS 1 REVIEW 1 FIX
F
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

B
JS Execution Cost
526ms total JS execution
REVIEW
526ms total JS execution
Info::
https://translatewiki.net/cdn-cgi/challenge-platfo...: 227ms CPU time
Info::
https://translatewiki.net/: 213ms CPU time
Info::
Unattributable: 85ms CPU time
Info::
Third-party scripts: 85ms (16% of total)

Main Thread Breakdown

Script Evaluation 51% Other 21% Style & Layout 20% Parse HTML & CSS 4%
ScriptTotalScriptingParse/CompileParty
https://translatewiki.net/cdn-cgi/challenge-platform/scripts/jsd/main.js227ms218ms2ms1st
https://translatewiki.net/213ms47ms4ms1st
Unattributable85ms5ms0ms3rd
A+
Page Weight Budget
191 KB transferred, 9 requests
PASS
191 KB transferred, 9 requests
Info::
Page weighs 267 KB (191 KB transferred)
Info::
9 HTTP requests
Info::
Estimated 0.04 g CO2 per page load
191 KB / 2.4 MB budget
191 KB transferred
9 requests
0.04 g CO2 per page load
Images 158.9 KiB 83%
HTML 19.4 KiB 10%
JavaScript 11.5 KiB 6%
Other 822 B 0%
Other 646 B 0%
CSS 0 B 0%
0 2.4 MB 4.9 MB
Under budget
A+
Third-Party Impact
No third-party resources
PASS
No third-party resources
Info::
No third-party resources detected
No third-party resources detected — all resources are first-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+
Image Optimization
1 images, 0 KB saveable
PASS
1 images, 0 KB saveable
Info::
All images are well-optimized
1 images 159 KB
0 oversized -0 KB
0 legacy format
0 missing dimensions CLS risk
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+
JS Bundles
2 scripts, 0 KB unused
PASS
2 scripts, 0 KB unused
0 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://translatewiki.net/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector-20220 KB—✓1st
https://translatewiki.net/cdn-cgi/challenge-platform/h/b/scripts/jsd/0b8fb825cb67/main.js?11 KB—✓1st
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
9 resources · 191 KB · 0 KB savings available
PASS
9 resources · 191 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 191 KB
9 resources · 191.2 KiB · 0 third-party Within 1MB page-weight target
Image 83% · 159.3 KiB
Document 10% · 19.4 KiB
JavaScript 6% · 11.5 KiB
Other 1% · 1.1 KiB
CSS 0% · 0 B
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: Cloudflare

Network Waterfall
9 requests over 486ms
INFO
0 ms 500 ms 1.0 s 1.5 s 2.0 s FCP 1.4 s LCP 2.3 shttps://translatewiki.net// https://translatewiki.net/ — 200 — 19.4 KiB — 294 ms — h2https://translatewiki.net/w/load.php?lang=en&modules=ext.translate.mainpage.icons%2Cstyles%7Cext.uls.pt%7Cext.visualEditor.desktopArticleTarget.noscript%7Cjquery.uls.grid%7Cmediawiki.ui.button%7Cskins.vector.icons%2Cstyles%7Cskins.vector.search.codex.styles&only=styles&skin=vector-2022/w/load.php?lang=en&modules=ext.tra... https://translatewiki.net/w/load.php?lang=en&modules=ext.translate.mainpage.icons%2Cstyles%7Cext.uls.pt%7Cext.visualEditor.desktopArticleTarget.noscript%7Cjquery.uls.grid%7Cmediawiki.ui.button%7Cskins.vector.icons%2Cstyles%7Cskins.vector.search.codex.styles&only=styles&skin=vector-2022 — -1 — 0 B — 45 ms — https://translatewiki.net/w/load.php?lang=en&modules=site.styles&only=styles&skin=vector-2022/w/load.php?lang=en&modules=site.st... https://translatewiki.net/w/load.php?lang=en&modules=site.styles&only=styles&skin=vector-2022 — -1 — 0 B — 45 ms — https://translatewiki.net/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector-2022/w/load.php?lang=en&modules=startup... https://translatewiki.net/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector-2022 — 403 — 71 B — 44 ms — h2https://translatewiki.net/w/extensions/TwnMainPage/resources/banners/dance.jpg/w/extensions/TwnMainPage/resources... https://translatewiki.net/w/extensions/TwnMainPage/resources/banners/dance.jpg — 200 — 158.9 KiB — 49 ms — h2https://translatewiki.net/cdn-cgi/challenge-platform/scripts/jsd/main.js/cdn-cgi/challenge-platform/scripts... https://translatewiki.net/cdn-cgi/challenge-platform/scripts/jsd/main.js — 302 — 259 B — 23 ms — h3https://translatewiki.net/favicon.ico/favicon.ico https://translatewiki.net/favicon.ico — 200 — 387 B — 31 ms — h3https://translatewiki.net/cdn-cgi/challenge-platform/h/b/scripts/jsd/0b8fb825cb67/main.js?/cdn-cgi/challenge-platform/h/b/scr... https://translatewiki.net/cdn-cgi/challenge-platform/h/b/scripts/jsd/0b8fb825cb67/main.js? — 200 — 11.4 KiB — 39 ms — h3https://translatewiki.net/cdn-cgi/challenge-platform/h/b/jsd/oneshot/0b8fb825cb67/0.26267945896456757:1776888748:d8ZJUSqLLzxkOsprZnYwJCPyd_cwcfeIlxdsgOjd-T0/9f077124ba068ce7/cdn-cgi/challenge-platform/h/b/jsd... https://translatewiki.net/cdn-cgi/challenge-platform/h/b/jsd/oneshot/0b8fb825cb67/0.26267945896456757:1776888748:d8ZJUSqLLzxkOsprZnYwJCPyd_cwcfeIlxdsgOjd-T0/9f077124ba068ce7 — 200 — 822 B — 27 ms — h3
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
16% of JavaScript execution is third-party
First-party Third-party 85ms · 0KB · $1/mo
Unattributable
Other
Optional
Execution 85ms
Transfer 0 KB
Monthly Cost $1/mo

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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