https://translatewiki.net
Performance
· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.SCORE
98
GRADE
A+
FIX
1
REVIEW
3
PASS
9
INFO
2
Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
96
88
81
92
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
374 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
654 ms
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
6 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.
1.90 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.
1.06 s
Page Load Progression
585 ms 1.2 s 1.8 s 2.3 s
2.9 s
3.5 s
4.1 s
4.7 sChecks
159 PASS 3 REVIEW 1 FIX
FHTTP CachingActionNo cache headersFIX
HTTP Caching
ActionNo cache headers
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.
BImage Optimization11 images, 0 KB saveableREVIEW
Image Optimization
11 images, 0 KB saveable
11 images, 0 KB saveable
Info::
All images are well-optimized
11 images 183 KB
0 oversized -0 KB
8 legacy format
0 missing dimensions CLS risk
BJS Execution Cost510ms total JS executionREVIEW
JS Execution Cost
510ms total JS execution
510ms total JS execution
Info::
https://translatewiki.net/w/load.php?lang=en&modul...: 186ms CPU time
Info::
https://translatewiki.net/: 175ms CPU time
Info::
Unattributable: 93ms CPU time
Info::
https://translatewiki.net/cdn-cgi/challenge-platfo...: 57ms CPU time
Info::
Third-party scripts: 93ms (18% of total)
Main Thread Breakdown
Script Evaluation 48% Other 22% Style & Layout 17% Script Parsing & Compilation 6%
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://translatewiki.net/w/load.php?lang=en&modules=ext.checkUser.clientHints%7Cext.translate.base%2Cmainpage%2Cstatsbar%7Cext.translate.mainpage.signup%7Cext.uls.interface%2Cpreferences%2Cwebfonts%7Cjquery%2Coojs%2Coojs-ui-core%2Coojs-ui-widgets%2Coojs-ui-windows%2Csite%2Cvue%7Cjquery.client%2CtextSelection%7Cjquery.uls.data%7Cmediawiki.String%2CTitle%2CUri%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Clanguageselector%2Cstorage%2Cuser%2Cutil%7Cmediawiki.editfont.styles%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.ready%7Cmediawiki.page.watch.ajax%7Cmediawiki.widgets.LanguageSelectWidget%7Coojs-ui-core.icons%2Cstyles%7Coojs-ui-widgets.icons%7Coojs-ui-windows.icons%7Coojs-ui.styles.icons-alerts%2Cicons-content%2Cicons-editing-advanced%2Cicons-editing-core%2Cicons-interactions%2Cicons-layout%2Cicons-moderation%2Cicons-user%2Cindicators%7Cskins.vector.clientPreferences%2Cjs%7Cskins.vector.icons.js%7Ctwn.jserrorlog&skin=vector-2022&version=1756e | 186ms | 140ms | 31ms | 1st |
| https://translatewiki.net/ | 175ms | 12ms | 1ms | 1st |
| Unattributable | 93ms | 1ms | 0ms | 3rd |
| https://translatewiki.net/cdn-cgi/challenge-platform/scripts/jsd/main.js | 57ms | 55ms | 1ms | 1st |
BJS Bundles6 scripts, 138 KB unusedREVIEW
JS Bundles
6 scripts, 138 KB unused
6 scripts, 138 KB unused
Warning::
https://translatewiki.net/w/load.php?lang=en&modul...: 138 KB unused (40%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 138 KB
138 KB unused JavaScript
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://translatewiki.net/w/load.php?lang=en&modules=ext.checkUser.clientHints%7Cext.translate.base%2Cmainpage%2Cstatsbar%7Cext.translate.mainpage.signup%7Cext.uls.interface%2Cpreferences%2Cwebfonts%7Cjquery%2Coojs%2Coojs-ui-core%2Coojs-ui-widgets%2Coojs-ui-windows%2Csite%2Cvue%7Cjquery.client%2CtextSelection%7Cjquery.uls.data%7Cmediawiki.String%2CTitle%2CUri%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Clanguageselector%2Cstorage%2Cuser%2Cutil%7Cmediawiki.editfont.styles%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.ready%7Cmediawiki.page.watch.ajax%7Cmediawiki.widgets.LanguageSelectWidget%7Coojs-ui-core.icons%2Cstyles%7Coojs-ui-widgets.icons%7Coojs-ui-windows.icons%7Coojs-ui.styles.icons-alerts%2Cicons-content%2Cicons-editing-advanced%2Cicons-editing-core%2Cicons-interactions%2Cicons-layout%2Cicons-moderation%2Cicons-user%2Cindicators%7Cskins.vector.clientPreferences%2Cjs%7Cskins.vector.icons.js%7Ctwn.jserrorlog&skin=vector-2022&version=1756e | 346 KB | 138 KB (40%) | ✓ | 1st |
| https://translatewiki.net/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector-2022 | 15 KB | — | ✓ | 1st |
| https://translatewiki.net/w/load.php?lang=en&modules=ext.gadget.HoverPopTools%2Cnew-messages%2Cterminology&skin=vector-2022&version=1xq1v | 11 KB | — | ✓ | 1st |
| https://translatewiki.net/w/load.php?lang=en&modules=ext.visualEditor.core.utils.parsing%7Cext.visualEditor.desktopArticleTarget.init%7Cext.visualEditor.progressBarWidget%2CsupportCheck%2CtargetLoader%2CtempWikitextEditorWidget%2Ctrack%2Cve&skin=vector-2022&version=1x0mj | 18 KB | — | ✓ | 1st |
| https://translatewiki.net/cdn-cgi/challenge-platform/h/b/scripts/jsd/0b8fb825cb67/main.js? | 11 KB | — | ✓ | 1st |
| https://translatewiki.net/w/load.php?lang=en&modules=ext.uls.webfonts.repository&skin=vector-2022&version=1how9 | 5 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
A+Page Weight Budget656 KB transferred, 24 requestsPASS
Page Weight Budget
656 KB transferred, 24 requests
656 KB transferred, 24 requests
Info::
Page weighs 2.2 MB (656 KB transferred)
Info::
24 HTTP requests
Info::
Estimated 0.13 g CO2 per page load
656 KB transferred
24 requests
0.13 g CO2 per page load
JavaScript 407.0 KiB 62%
Images 183.4 KiB 28%
CSS 27.4 KiB 4%
HTML 19.4 KiB 3%
Other 18.7 KiB 3%
Other 610 B 0%
0 2.4 MB 4.9 MB
Under budget
A+Third-Party Impact2% third-party, 0 ms blockingPASS
Third-Party Impact
2% third-party, 0 ms blocking
2% third-party, 0 ms blocking
Info::
Third-party code accounts for 2% of page weight (12.8 KiB of 656.5 KiB)
Info::
Third-party blocking time is low (0 ms)
98%
First-party Third-party
A+Text CompressionAll text resources are compressedPASS
Text Compression
All text resources are compressed
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+Font LoadingNo web fonts (system fonts)PASS
Font Loading
No web fonts (system fonts)
No web fonts (system fonts)
Info::
No web fonts loaded — system fonts are fastest
No web fonts loaded — system fonts are optimal.
A+Resource CachingAll resources properly cachedPASS
Resource Caching
All resources properly cached
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+Critical Rendering PathNo render-blocking resourcesPASS
Critical Rendering Path
No render-blocking resources
No render-blocking resources
Info::
No render-blocking resources detected
A+Resource HintsNo optimization neededPASS
Resource Hints
No optimization needed
No optimization needed
Info::
No resource hint issues
A+Page Weight Inventory24 resources · 656 KB · 138 KB savings availablePASS
Page Weight Inventory
24 resources · 656 KB · 138 KB savings available
24 resources · 656 KB · 138 KB savings available
Info::
Within 1MB page-weight target
Got: 656 KB
Info::
~138 KB of savings available
Info::
4 third-party resources (2% of weight)
Info::
1 resources over 200KB
24 resources · 656.5 KiB · 4 third-party Within 1MB page-weight target
JavaScript 62% · 407.0 KiB
Image 28% · 183.8 KiB
CSS 4% · 27.4 KiB
Document 3% · 19.4 KiB
Other 3% · 18.9 KiB
~138.1 KiB of savings available
Remove unused JavaScript: 138.1 KiB
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 24 resources | 656.5 KiB | ||||||
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
Whether the site is served from green-energy infrastructure
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Network Waterfall24 requests over 3104msINFO
Network Waterfall
24 requests over 3104ms
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
18% of JavaScript execution is third-party
First-party Third-party 93ms · 0KB · $1/mo
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 93ms | 0 KB | — | $1/mo | Optional |
Unattributable
Other
Execution 93ms
Transfer 0 KB
Monthly Cost $1/mo
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.