https://de.wikipedia.org
Performance
· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.SCORE
91
GRADE
A
FIX
0
REVIEW
4
PASS
9
INFO
2
Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
100
88
100
85
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
285 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
351 ms
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.
0.001
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
512 ms
Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.
353 ms
Page Load Progression
375 ms
750 ms 1.1 s 1.5 s 1.9 s 2.2 s 2.6 s 3.0 sChecks
159 PASS 4 REVIEW
BImage Optimization38 images, 0 KB saveableREVIEW
Image Optimization
38 images, 0 KB saveable
38 images, 0 KB saveable
Info::
All images are well-optimized
38 images 196 KB
0 oversized -0 KB
12 legacy format
0 missing dimensions CLS risk
CJS BundlesAction10 scripts, 158 KB unusedREVIEW
JS Bundles
Action10 scripts, 158 KB unused
10 scripts, 158 KB unused
Warning::
https://de.wikipedia.org/w/load.php?lang=de&module...: 158 KB unused (52%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 158 KB
158 KB unused JavaScript
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://de.wikipedia.org/w/load.php?lang=de&modules=ext.centralNotice.choiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2CstartUp%7Cext.centralauth.centralautologin%7Cext.checkUser.clientHints%7Cext.cx.eventlogging.campaigns%7Cext.discussionTools.init%2Cminervaicons%7Cext.echo.centralauth%7Cext.eventLogging%2CnavigationTiming%2Cpopups%2CtestKitchen%2CwikimediaEvents%7Cext.eventLogging.metricsPlatform%7Cext.parsermigration.survey%7Cext.uls.interface%2Cpreferences%2Cwebfonts%7Cext.urlShortener.toolbar%7Cext.wikimediaEvents.testKitchen%7Cjquery%2Cmoment%2Coojs%2Coojs-ui-core%2Coojs-ui-windows%2Crangefix%2Csite%7Cjquery.client%2CtextSelection%7Cmediawiki.String%2CTitle%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cstorage%2Cuser%2Cutil%2CvisibleTimeout%7Cmediawiki.editfont.styles%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.ready%7Cmediawiki.page.watch.ajax%7Cmmv.bootstrap%2Ccodex%7Coojs-ui-windows.icons%7Cskins.vector.clientPreferences%2Cjs%7Cskins.vector.icons.js%7Cwikibase.client.vector-2022%7Cwikibase.databox.fromWikidata&skin=vector-2022&version=1kmni | 309 KB | 158 KB (52%) | ✓ | 1st |
| https://de.wikipedia.org/w/load.php?lang=de&modules=startup&only=scripts&raw=1&skin=vector-2022 | 21 KB | — | ✓ | 1st |
| https://de.wikipedia.org/w/load.php?lang=de&modules=ext.gadget.CommonsDirekt%2CNavFrameLegacy%2COpenStreetMap%2CWikiMiniAtlas%2CnavileisteAutocollapse&skin=vector-2022&version=6pzzd | 3 KB | — | ✓ | 1st |
| https://de.wikipedia.org/w/load.php?lang=de&modules=ext.visualEditor.core.utils.parsing%7Cext.visualEditor.desktopArticleTarget.init%7Cext.visualEditor.progressBarWidget%2CsupportCheck%2CtargetLoader%2CtempWikitextEditorWidget%2Ctrack%2Cve&skin=vector-2022&version=11qxl | 18 KB | — | ✓ | 1st |
| https://de.wikipedia.org/w/load.php?lang=de&modules=ext.centralauth.ForeignApi%7Cext.cite.referencePreviews%7Cext.math.popup%7Cext.popups.main%7Cmediawiki.ForeignApi%7Cmediawiki.ForeignApi.core&skin=vector-2022&version=1nf1d | 27 KB | — | ✓ | 1st |
| https://de.wikipedia.org/w/load.php?lang=de&modules=mw.config.values.wbCurrentSiteDetails%2CwbRepo%7Coojs-ui.styles.icons-editing-core&skin=vector-2022&version=4s6ku | 3 KB | — | ✓ | 1st |
| https://meta.wikimedia.org/w/index.php?title=MediaWiki:Wikiminiatlas.js&action=raw&ctype=text/javascript | 15 KB | — | ✗ | 3rd |
| https://auth.wikimedia.org/metawiki/wiki/Special:CentralAutoLogin/checkLoggedIn?useformat=desktop&wikiid=dewiki&usesul3=1&type=script | 1 KB | — | ✓ | 3rd |
| https://de.wikipedia.org/w/load.php?lang=de&modules=mediawiki.action.view.postEdit%7Cmediawiki.notification%2CtempUserCreated%7Coojs-ui.styles.icons-interactions&skin=vector-2022&version=23xvs | 9 KB | — | ✓ | 1st |
| https://de.wikipedia.org/w/load.php?lang=de&modules=oojs-ui-widgets%7Coojs-ui-widgets.icons&skin=vector-2022&version=sqxhp | 18 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
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
ActionWhether the site is served from green-energy infrastructure
Green Hosting
No green hosting detected
BHTTP Cachings-maxage=1200, must-revalidate, max-age=0REVIEW
HTTP Caching
s-maxage=1200, must-revalidate, max-age=0
s-maxage=1200, must-revalidate, max-age=0
Info::
Cache-Control header is set
Got: s-maxage=1200, must-revalidate, max-age=0
Info::
CDN TTL: 20 minutes (s-maxage=1200)
Info::
Last-Modified header present
Cache-Control
s-maxage=1200, must-revalidate, max-age=0
| Directive | Value | Meaning |
|---|---|---|
| s-maxage | 1200 | CDN caches for 20 minutes |
| must-revalidate | — | Must recheck with server after expiry |
| max-age | 0 | Cache for 0 seconds |
A+Page Weight Budget694 KB transferred, 56 requestsPASS
Page Weight Budget
694 KB transferred, 56 requests
694 KB transferred, 56 requests
Info::
Page weighs 2.5 MB (694 KB transferred)
Info::
56 HTTP requests
Info::
Estimated 0.14 g CO2 per page load
694 KB transferred
56 requests
0.14 g CO2 per page load
JavaScript 424.3 KiB 61%
Images 196.2 KiB 28%
CSS 39.0 KiB 6%
HTML 27.3 KiB 4%
Other 7.0 KiB 1%
0 2.4 MB 4.9 MB
Under budget
AThird-Party Impact26% third-party, 0 ms blockingPASS
Third-Party Impact
26% third-party, 0 ms blocking
26% third-party, 0 ms blocking
Info::
Third-party code accounts for 26% of page weight (179.3 KiB of 693.7 KiB)
Info::
Third-party blocking time is low (0 ms)
74%
26%
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+JS Execution Cost281ms total JS executionPASS
JS Execution Cost
281ms total JS execution
281ms total JS execution
Info::
Unattributable: 88ms CPU time
Info::
https://de.wikipedia.org/wiki/Wikipedia:Hauptseite: 81ms CPU time
Info::
https://de.wikipedia.org/w/load.php?lang=de&module...: 59ms CPU time
Info::
https://de.wikipedia.org/w/load.php?lang=de&module...: 53ms CPU time
Info::
Third-party scripts: 88ms (31% of total)
Main Thread Breakdown
Script Evaluation 40% Other 27% Style & Layout 15% Script Parsing & Compilation 12% Rendering 4% Parse HTML & CSS 3%
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| Unattributable | 88ms | 1ms | 0ms | 3rd |
| https://de.wikipedia.org/wiki/Wikipedia:Hauptseite | 81ms | 3ms | 1ms | 1st |
| https://de.wikipedia.org/w/load.php?lang=de&modules=startup&only=scripts&raw=1&skin=vector-2022 | 59ms | 53ms | 1ms | 1st |
| https://de.wikipedia.org/w/load.php?lang=de&modules=ext.centralNotice.choiceData%2Cdisplay%2CgeoIP%2CimpressionDiet%2CkvStore%2CstartUp%7Cext.centralauth.centralautologin%7Cext.checkUser.clientHints%7Cext.cx.eventlogging.campaigns%7Cext.discussionTools.init%2Cminervaicons%7Cext.echo.centralauth%7Cext.eventLogging%2CnavigationTiming%2Cpopups%2CtestKitchen%2CwikimediaEvents%7Cext.eventLogging.metricsPlatform%7Cext.parsermigration.survey%7Cext.uls.interface%2Cpreferences%2Cwebfonts%7Cext.urlShortener.toolbar%7Cext.wikimediaEvents.testKitchen%7Cjquery%2Cmoment%2Coojs%2Coojs-ui-core%2Coojs-ui-windows%2Crangefix%2Csite%7Cjquery.client%2CtextSelection%7Cmediawiki.String%2CTitle%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Crouter%2Cstorage%2Cuser%2Cutil%2CvisibleTimeout%7Cmediawiki.editfont.styles%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.ready%7Cmediawiki.page.watch.ajax%7Cmmv.bootstrap%2Ccodex%7Coojs-ui-windows.icons%7Cskins.vector.clientPreferences%2Cjs%7Cskins.vector.icons.js%7Cwikibase.client.vector-2022%7Cwikibase.databox.fromWikidata&skin=vector-2022&version=1kmni | 53ms | 18ms | 33ms | 1st |
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 Inventory56 resources · 694 KB · 158 KB savings availablePASS
Page Weight Inventory
56 resources · 694 KB · 158 KB savings available
56 resources · 694 KB · 158 KB savings available
Info::
Within 1MB page-weight target
Got: 694 KB
Info::
~158 KB of savings available
Info::
33 third-party resources (26% of weight)
Info::
1 resources over 200KB
56 resources · 693.7 KiB · 33 third-party Within 1MB page-weight target
JavaScript 61% · 424.3 KiB
Image 29% · 198.0 KiB
CSS 6% · 39.0 KiB
Document 5% · 32.5 KiB
~158.5 KiB of savings available
Remove unused JavaScript: 158.5 KiB
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 56 resources | 693.7 KiB | ||||||
Network Waterfall56 requests over 616msINFO
Network Waterfall
56 requests over 616ms
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
31% of JavaScript execution is third-party
First-party Third-party 88ms · 0KB · €1/mo
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 88ms | 0 KB | — | €1/mo | Optional |
Unattributable
Other
Execution 88ms
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.