Lighthouse Desktop

· 0 checks — Desktop Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.

SCORE

GRADE

FIX

REVIEW

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INFO

Detailed Report

Audit breakdown by category with detailed findings.

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling

Why this matters

Performance issues directly impact user engagement and conversion rates.

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

Why this matters

Performance issues directly impact user engagement and conversion rates.

A long cache lifetime can speed up repeat visits to your page. Learn more about caching.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Request	Cache TTL	Transfer Size
www.uni-muenster.de/news/data/img/2026/03/15324-wguCOBOz-webL@2x.jpg	0.0 ms	350.7 KiB
www.uni-muenster.de/news/data/img/2026/04/web-3AxRIK2X-webL@2x.jpg	0.0 ms	247.2 KiB
www.uni-muenster.de/news/data/img/2026/04/15343-fKF2VXz3-webL@2x.jpg	0.0 ms	211.4 KiB
www.uni-muenster.de/news/data/img/2026/03/15322-73uI2dpJ-webL@2x.jpeg	0.0 ms	178.9 KiB
www.uni-muenster.de/news/data/img/2026/04/15347-80yZ75n7-heroQuadM.jpg	0.0 ms	113.9 KiB
piwik.uni-muenster.de/piwik.js	0.0 ms	103.2 KiB
/imperia/md/content/allgemein/farbunabhaengig/fonts/metaw...	0.0 ms	64.9 KiB
/imperia/md/content/allgemein/farbunabhaengig/fonts/metaw...	0.0 ms	64.2 KiB
/imperia/md/content/allgemein/farbunabhaengig/fonts/wwu_s...	0.0 ms	11.1 KiB
www.uni-muenster.de/wwu/js/jquery.min.js	604800.0 s	30.2 KiB
www.uni-muenster.de/wwu/css/main.css	604800.0 s	25.5 KiB
www.uni-muenster.de/wwu/js/owl.carousel2.js	604800.0 s	12.9 KiB
www.uni-muenster.de/wwu/js/main.js	604800.0 s	11.1 KiB
www.uni-muenster.de/wwu/js/lazysizes.js	604800.0 s	4.7 KiB
www.uni-muenster.de/wwu/js/modernizr.wwu.js	604800.0 s	4.4 KiB
www.uni-muenster.de/wwu/css/owl.carousel2.css	604800.0 s	3.2 KiB
www.uni-muenster.de/wwucss/006e89/secondary.css	604800.0 s	1.3 KiB
www.uni-muenster.de/wwucss/7ab51d/primary.css	604800.0 s	1.0 KiB
www.uni-muenster.de/wwu/css/print.css	604800.0 s	794 B

Layout shifts occur when elements move absent any user interaction. Investigate the causes of layout shifts, such as elements being added, removed, or their fonts changing as the page loads.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]

items: [map[node:map[type:text value:Total] score:0.692771] map[node:map[boundingRect:map[bottom:3354 height:3091 left:110 right:1252 top:262 width:1143] lhId:page-17-SECTION nodeLabel:Universität Münster Topical Programme: Uni bündelt Forschung zu KI und komplexe… path:1,HTML,2,BODY,0,DIV,5,DIV,3,SECTION selector:body#mnav > div#top > div.content > section#inhalt snippet:<section id="inhalt" class="main six columns" role="main"> type:node] score:0.371829 subItems:map[items:[map[cause:Web font extra:map[type:url value:https://www.uni-muenster.de/imperia/md/content/allgemein/farbunabhaengig/fonts/metawebpro-normal.woff]]] type:subitems]] map[node:map[boundingRect:map[bottom:1072 height:404 left:110 right:859 top:667 width:750] lhId:page-22-ARTICLE nodeLabel:13. April 2026 © LMU München - Gerhard Gnauck Universität eröffnet Ausstellung … path:1,HTML,2,BODY,0,DIV,5,DIV,3,SECTION,10,ARTICLE selector:div#top > div.content > section#inhalt > article.module snippet:<article class="module extended secondary " style="clear: left;"> type:node] score:0.159447 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:1058 height:362 left:112 right:474 top:696 width:362] lhId:page-9-IMG nodeLabel:Drei Menschen stehen im Gebäue der Ludwig-Maximilians-Universität München vor d… path:1,HTML,2,BODY,0,DIV,5,DIV,3,SECTION,10,ARTICLE,1,DIV,0,FIGURE,0,A,0,PICTURE,1,IMG selector:figure.teaserfigure > a > picture > img snippet:<img src="/news/data/img/2026/04/15347-80yZ75n7-heroQuadM.jpg" width="570" height="570" data-sizes="auto" alt="Drei Menschen stehen im Gebäue der Ludwig-Maximilians-Universität München …"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:1072 height:404 left:110 right:859 top:667 width:750] lhId:page-22-ARTICLE nodeLabel:13. April 2026 © LMU München - Gerhard Gnauck Universität eröffnet Ausstellung … path:1,HTML,2,BODY,0,DIV,5,DIV,3,SECTION,10,ARTICLE selector:div#top > div.content > section#inhalt > article.module snippet:<article class="module extended secondary " style="clear: left;"> type:node] score:0.150525 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:1058 height:362 left:112 right:474 top:696 width:362] lhId:page-9-IMG nodeLabel:Drei Menschen stehen im Gebäue der Ludwig-Maximilians-Universität München vor d… path:1,HTML,2,BODY,0,DIV,5,DIV,3,SECTION,10,ARTICLE,1,DIV,0,FIGURE,0,A,0,PICTURE,1,IMG selector:figure.teaserfigure > a > picture > img snippet:<img src="/news/data/img/2026/04/15347-80yZ75n7-heroQuadM.jpg" width="570" height="570" data-sizes="auto" alt="Drei Menschen stehen im Gebäue der Ludwig-Maximilians-Universität München …"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:3354 height:3091 left:110 right:1252 top:262 width:1143] lhId:page-17-SECTION nodeLabel:Universität Münster Topical Programme: Uni bündelt Forschung zu KI und komplexe… path:1,HTML,2,BODY,0,DIV,5,DIV,3,SECTION selector:body#mnav > div#top > div.content > section#inhalt snippet:<section id="inhalt" class="main six columns" role="main"> type:node] score:0.009571 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:654 height:377 left:-2417 right:-1663 top:277 width:755] lhId:page-1-IMG nodeLabel:Das Bild zeigt etwa 20 Sportlerinnen und Sportler in einer Turnhalle, die Akrob… path:1,HTML,2,BODY,0,DIV,5,DIV,3,SECTION,7,ARTICLE,2,DIV,0,DIV,0,DIV,2,DIV,0,DIV,0,FIGURE,0,A,0,PICTURE,3,IMG selector:figure > a > picture > img snippet:<img src="https://www.uni-muenster.de/news/data/img/2026/03/15324-wguCOBOz-webL@2x.j…" width="750" height="374" data-sizes="auto" alt="Das Bild zeigt etwa 20 Sportlerinnen und Sportler in einer Turnhalle, die …"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:540 height:134 left:-2945 right:-2654 top:406 width:291] lhId:page-11-A nodeLabel:Serie „Leben an der Uni“: Sport als sicheres „Medikament“ path:1,HTML,2,BODY,0,DIV,5,DIV,3,SECTION,7,ARTICLE,2,DIV,0,DIV,0,DIV,2,DIV,0,DIV,0,FIGURE,1,FIGCAPTION,0,A selector:div.item > figure > figcaption.owl-caption > a.owl-ib snippet:<a href="/news/view.php?cmdid=15324" class="owl-ib" data-fresco-caption="Das Bild zeigt etwa 20 Sportlerinnen und Sportler in einer Turnhalle, die …"> type:node] score:0.001392 subItems:map[items:[map[cause:Web font extra:map[type:url value:https://www.uni-muenster.de/imperia/md/content/allgemein/farbunabhaengig/fonts/metawebpro-bold.woff]]] type:subitems]]]

Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Est Savings
/imperia/md/content/allgemein/farbunabhaengig/fonts/metaw...	2.2 s
/imperia/md/content/allgemein/farbunabhaengig/fonts/metaw...	485 ms
/imperia/md/content/allgemein/farbunabhaengig/fonts/wwu_s...	260 ms

Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Resource Size	Est Savings
Ulysseus Banner `div.module-content > figure.teaserfigure > a > img`	/imperia/md/images/allgemein/logos/crop_930_465_0_0_167c6...	463.7 KiB	452.9 KiB
Das Bild zeigt etwa 20 Sportlerinnen und Sportler in einer Turnhalle, die Akrob… `figure > a > picture > img`	www.uni-muenster.de/news/data/img/2026/03/15324-wguCOBOz-webL@2x.jpg	350.4 KiB	304.0 KiB
<address>© Bezirksregierung Münster</address> `figure > a > picture > img`	www.uni-muenster.de/news/data/img/2026/04/web-3AxRIK2X-webL@2x.jpg	246.9 KiB	200.6 KiB
Seit kurzem steht am MEET Batterieforschungszentrum ein neues Forschungsgerät: … `figure > a > picture > img`	www.uni-muenster.de/news/data/img/2026/04/15343-fKF2VXz3-webL@2x.jpg	211.1 KiB	164.7 KiB
Pl 200923 3338 Mittel `div.module-content > figure.teaserfigure > a > img`	/imperia/md/images/zentral/weiterbildung/crop_1000_500_0_...	149.7 KiB	138.8 KiB
Das Bild zeigt klatschende Hände bei einem Konzert.<address>© stockadobe.com - … `figure > a > picture > img`	www.uni-muenster.de/news/data/img/2026/03/15322-73uI2dpJ-webL@2x.jpeg	178.6 KiB	133.4 KiB
Studentenwerk Wohnheim Boeselagerstr _4_ `div.module-content > figure.teaserfigure > a > img`	/imperia/md/images/allgemein/2014/leben/fittosize_1140_57...	131.1 KiB	120.3 KiB
Meet-judith Kraft Ii `div.module-content > figure.teaserfigure > a > img`	/imperia/md/images/zentral/forschung/fittosize_1140_570_c...	110.4 KiB	99.5 KiB
Das münstersche Schloss ist Hauptsitz der Universität Münster `div.module-content > figure.teaserfigure > a > img`	/imperia/md/images/allgemein/2018/gebaeude/fittosize_718_...	106.9 KiB	96.1 KiB
Drei Menschen stehen im Gebäue der Ludwig-Maximilians-Universität München vor d… `figure.teaserfigure > a > picture > img`	www.uni-muenster.de/news/data/img/2026/04/15347-80yZ75n7-heroQuadM.jpg	113.6 KiB	92.3 KiB
Standbildvideokomplexitaet `div.module-content > figure.teaserfigure > a > img`	/imperia/md/images/wwu/compliance/crop_672_336_0_102_cbc4...	92.4 KiB	81.6 KiB

Each subpart has specific improvement strategies. Ideally, most of the LCP time should be spent on loading the resources, not within delays.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:label label:Subpart valueType:text] map[key:duration label:Duration valueType:ms]]

items: [map[duration:2020.959 label:Time to first byte subpart:timeToFirstByte] map[duration:11.223 label:Resource load delay subpart:resourceLoadDelay] map[duration:12920.107 label:Resource load duration subpart:resourceLoadDuration] map[duration:14.367 label:Element render delay subpart:elementRenderDelay]]

lhId: page-1-IMG

nodeLabel: Das Bild zeigt etwa 20 Sportlerinnen und Sportler in einer Turnhalle, die Akrob…

path: 1,HTML,2,BODY,0,DIV,5,DIV,3,SECTION,7,ARTICLE,2,DIV,0,DIV,0,DIV,2,DIV,0,DIV,0,FIGURE,0,A,0,PICTURE,3,IMG

selector: figure > a > picture > img

snippet: <img src="https://www.uni-muenster.de/news/data/img/2026/03/15324-wguCOBOz-webL@2x.j…" width="750" height="374" data-sizes="auto" alt="Das Bild zeigt etwa 20 Sportlerinnen und Sportler in einer Turnhalle, die …">

Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-1-IMG

nodeLabel: Das Bild zeigt etwa 20 Sportlerinnen und Sportler in einer Turnhalle, die Akrob…

path: 1,HTML,2,BODY,0,DIV,5,DIV,3,SECTION,7,ARTICLE,2,DIV,0,DIV,0,DIV,2,DIV,0,DIV,0,FIGURE,0,A,0,PICTURE,3,IMG

selector: figure > a > picture > img

Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

Why this matters

Performance issues directly impact user engagement and conversion rates.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.

title: Preconnected origins

value: no origins were preconnected

description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.

title: Preconnect candidates

value: No additional origins are good candidates for preconnecting

Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size	Duration
www.uni-muenster.de/wwucss/7ab51d/primary.css	1.0 KiB	347 ms
www.uni-muenster.de/wwu/js/modernizr.wwu.js	4.4 KiB	347 ms
www.uni-muenster.de/wwucss/006e89/secondary.css	1.3 KiB	347 ms
www.uni-muenster.de/wwu/css/main.css	25.5 KiB	307 ms

HTTP/2 and HTTP/3 offer many benefits over HTTP/1.1, such as multiplexing. Learn more about using modern HTTP.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Protocol
www.uni-muenster.de/de/	http/1.1
www.uni-muenster.de/wwu/css/main.css	http/1.1
www.uni-muenster.de/wwucss/7ab51d/primary.css	http/1.1
www.uni-muenster.de/wwucss/006e89/secondary.css	http/1.1
www.uni-muenster.de/wwu/js/modernizr.wwu.js	http/1.1
www.uni-muenster.de/imperia/md/images/allgemein/farbunabhaengig/unims.svg	http/1.1
www.uni-muenster.de/news/data/img/2026/03/15324-wguCOBOz-webL@2x.jpg	http/1.1
www.uni-muenster.de/news/data/img/2026/04/web-3AxRIK2X-webL@2x.jpg	http/1.1
www.uni-muenster.de/news/data/img/2026/03/15322-73uI2dpJ-webL@2x.jpeg	http/1.1
www.uni-muenster.de/news/data/img/2026/04/15343-fKF2VXz3-webL@2x.jpg	http/1.1
www.uni-muenster.de/news/data/img/2026/04/15347-80yZ75n7-heroQuadM.jpg	http/1.1
www.uni-muenster.de/wwu/js/jquery.min.js	http/1.1
www.uni-muenster.de/wwu/js/main.js	http/1.1
www.uni-muenster.de/wwu/js/lazysizes.js	http/1.1
www.uni-muenster.de/wwu/css/print.css	http/1.1
/imperia/md/content/allgemein/farbunabhaengig/fonts/metaw...	http/1.1
/imperia/md/content/allgemein/farbunabhaengig/fonts/wwu_s...	http/1.1
/imperia/md/content/allgemein/farbunabhaengig/fonts/metaw...	http/1.1
/imperia/md/images/zentral/weiterbildung/crop_1000_500_0_...	http/1.1
/imperia/md/images/allgemein/2014/leben/fittosize_1140_57...	http/1.1
/imperia/md/images/zentral/forschung/fittosize_1140_570_c...	http/1.1
/imperia/md/images/wwu/compliance/crop_672_336_0_102_cbc4...	http/1.1
/imperia/md/images/allgemein/logos/crop_930_465_0_0_167c6...	http/1.1
/imperia/md/images/allgemein/2018/gebaeude/fittosize_718_...	http/1.1
www.uni-muenster.de/wwu/css/owl.carousel2.css	http/1.1
www.uni-muenster.de/wwu/js/owl.carousel2.js	http/1.1
www.uni-muenster.de/studium/index.shtml	http/1.1
www.uni-muenster.de/forschung/index.shtml	http/1.1
www.uni-muenster.de/lehre/index.shtml	http/1.1
www.uni-muenster.de/leben/index.shtml	http/1.1
www.uni-muenster.de/die-universitaet/index.shtml	http/1.1
www.uni-muenster.de/international/index.shtml	http/1.1
www.uni-muenster.de/studieninteressierte/index.shtml	http/1.1
www.uni-muenster.de/wirtschaft/index.html	http/1.1
www.uni-muenster.de/kommunikation/index.html	http/1.1
www.uni-muenster.de/foerdern/index.html	http/1.1
www.uni-muenster.de/quni/	http/1.1
/imperia/md/images/wwu/startbilderfilme/fittosize_704_396...	http/1.1
www.uni-muenster.de/imperia/md/content/wwu/media/research_de.vtt	http/1.1
/imperia/md/images/wwu/kommunikation/fittosize_704_396_3e...	http/1.1
/imperia/md/images/zentral/studieninteressierte/2025/fitt...	http/1.1
/imperia/md/images/zentral/studieninteressierte/2025/fitt...	http/1.1
/imperia/md/images/zentral/studieninteressierte/2025/fitt...	http/1.1
www.uni-muenster.de/imperia/md/images/allgemein/farbunabhaengig/favicon.ico	http/1.1

These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.

Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 665 ms

URL	Time Spent
uni-muenster.de/	200 ms
www.uni-muenster.de/	353 ms
www.uni-muenster.de/de	111 ms
www.uni-muenster.de/de/	0.0 ms

These are the largest layout shifts observed on the page. Each table item represents a single layout shift, and shows the element that shifted the most. Below each item are possible root causes that led to the layout shift. Some of these layout shifts may not be included in the CLS metric value due to windowing. Learn how to improve CLS

Why this matters

Performance issues directly impact user engagement and conversion rates.

Element	Layout shift score
Universität Münster Topical Programme: Uni bündelt Forschung zu KI und komplexe… `body#mnav > div#top > div.content > section#inhalt`	0.372
13. April 2026 © LMU München - Gerhard Gnauck Universität eröffnet Ausstellung … `div#top > div.content > section#inhalt > article.module`	0.159
13. April 2026 © LMU München - Gerhard Gnauck Universität eröffnet Ausstellung … `div#top > div.content > section#inhalt > article.module`	0.151
Universität Münster Topical Programme: Uni bündelt Forschung zu KI und komplexe… `body#mnav > div#top > div.content > section#inhalt`	0.010
Serie „Leben an der Uni“: Sport als sicheres „Medikament“ `div.item > figure > figcaption.owl-caption > a.owl-ib`	0.001
INTRANET `nav.nav-audience-container > ul#zielgruppennavigation > li.nav-item-audience > a`	0.000

Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

Diagnostics

Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 30 ms 18.7 KiB

URL	Transfer Size	Est Savings
www.uni-muenster.de/wwu/css/main.css	25.1 KiB	18.7 KiB

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 80 ms 65.5 KiB

URL	Transfer Size	Est Savings
piwik.uni-muenster.de/piwik.js	102.9 KiB	65.5 KiB

Minifying JavaScript files can reduce payload sizes and script parse time. Learn how to minify JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 2.3 KiB

URL	Transfer Size	Est Savings
www.uni-muenster.de/wwu/js/main.js	10.5 KiB	2.3 KiB

Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size
/imperia/md/images/wwu/kommunikation/fittosize_704_396_3e...	561.5 KiB
/imperia/md/images/allgemein/logos/crop_930_465_0_0_167c6...	464.1 KiB
www.uni-muenster.de/news/data/img/2026/03/15324-wguCOBOz-webL@2x.jpg	350.7 KiB
www.uni-muenster.de/news/data/img/2026/04/web-3AxRIK2X-webL@2x.jpg	247.2 KiB
www.uni-muenster.de/news/data/img/2026/04/15343-fKF2VXz3-webL@2x.jpg	211.4 KiB
www.uni-muenster.de/news/data/img/2026/03/15322-73uI2dpJ-webL@2x.jpeg	178.9 KiB
/imperia/md/images/zentral/weiterbildung/crop_1000_500_0_...	150.0 KiB
/imperia/md/images/allgemein/2014/leben/fittosize_1140_57...	131.5 KiB
www.uni-muenster.de/news/data/img/2026/04/15347-80yZ75n7-heroQuadM.jpg	113.9 KiB
/imperia/md/images/zentral/forschung/fittosize_1140_570_c...	110.8 KiB

More information about the performance of your application. These numbers don't directly affect the Performance score.

●Optimize DOM size

●Forced reflow

●Optimize viewport for mobile

●Max Potential First Input Delay 20 ms

●Minify CSS

●JavaScript execution time 0.1 s

●Minimizes main-thread work 0.6 s

●Image elements have explicit `width` and `height`

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 240 ms

●Server Backend Latencies 820 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 260 ms

○INP breakdown

○User Timing marks and measures

○Avoid long main-thread tasks

○Avoid non-composited animations

Accessibility

These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.

Contrast

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
© LMU München - Gerhard Gnauck `div.module-content > figure.teaserfigure > figcaption > address`
STUDIUM `header.module > div.module-content > h2#anchor_1_74 > a`
Studium an der Universität Münster `div.content > section#inhalt > article.module > div.metainfo`
© Uni MS - Peter Lessmann `div.module-content > figure.teaserfigure > figcaption > address`
Berufsbegleitend studieren an der Universität Münster `div.module-content > header > h2 > a`
Universität Münster Professional School `div.module-content > ul.linkliste > li > a.ext`
JurGrad `div.module-content > ul.linkliste > li > a.ext`
© Studierendenwerk Münster `div.module-content > figure.teaserfigure > figcaption > address`
Wohnen in Münster `div.module-content > header > h2 > a`
"Studierzimmer" in Münster `div.module-content > ul.linkliste > li > a.ext`
"Deine Couch für Erstis" `div.module-content > ul.linkliste > li > a.ext`
Studierendenwerk `div.module-content > ul.linkliste > li > a.ext`
Elektronische Wohnsitzanmeldung `div.module-content > ul.linkliste > li > a.ext`
Links `div.content > section#inhalt > aside.module > h2.metainfo`
Studienmöglichkeiten an der Universität Münster `div.module-content > ul.linkliste > li > a.int`
Bewerbung `div.module-content > ul.linkliste > li > a.int`
Professional School `div.module-content > ul.linkliste > li > a.ext`
Internationale Mobilität `div.module-content > ul.linkliste > li > a.int`
Organisation `div.module-content > ul.linkliste > li > a.int`
Hilfe und Beratung `div.module-content > ul.linkliste > li > a.int`
Studierendensekretariat `div.module-content > ul.linkliste > li > a.int`
Fristen und Termine `div.module-content > ul.linkliste > li > a.int`
Zentrale Studienberatung `div.module-content > ul.linkliste > li > a.ext`
Career Service `div.module-content > ul.linkliste > li > a.ext`
Karriereportal unikap.ms `div.module-content > ul.linkliste > li > a.ext`
Universitäts- und Landesbibliothek `div.module-content > ul.linkliste > li > a.ext`
Hochschulsport `div.module-content > ul.linkliste > li > a.ext`
Sprachen lernen `div.module-content > ul.linkliste > li > a.ext`
© Judith Kraft `div.module-content > figure.teaserfigure > figcaption > address`
DIE UNIVERSITÄT MÜNSTER `section#inhalt > header.module > div.module-content > h2#anchor_1_76`
© Uni MS Compliance Office `div.module-content > figure.teaserfigure > figcaption > address`
Compliance an der Universität Münster `div.module-content > header > h2 > a`
Code of Conduct `div.module-content > ul.linkliste > li > a.int`
Compliance Guide `div.module-content > ul.linkliste > li > a.int`
Interne Meldestelle `div.module-content > ul.linkliste > li > a.ext`
© Uni MS `div.module-content > figure.teaserfigure > figcaption > address`
Ulysseus an der Universität Münster `div.module-content > header > h2 > a`
European Universities initiative `div.module-content > ul.linkliste > li > a.ext`
© Uni MS - Peter Grewer `div.module-content > figure.teaserfigure > figcaption > address`
Karriere an der Universität Münster `div.module-content > header > h2 > a`
Aktuelle Stellenangebote `div.module-content > ul.linkliste > li > a.int`
nach oben `div#top > footer > div.row > a.nav-slideup`

These are opportunities to improve the legibility of your content.

Navigation

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
News und Termine im Überblick `section#inhalt > aside.module > div.module-content > h4`

These are opportunities to improve keyboard navigation in your application.

Best practices

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Folie 1 `article.module > div.owl-carousel > div.owl-dots > button.owl-dot`
Folie 2 `article.module > div.owl-carousel > div.owl-dots > button.owl-dot`
Folie 3 `article.module > div.owl-carousel > div.owl-dots > button.owl-dot`
Folie 4 `article.module > div.owl-carousel > div.owl-dots > button.owl-dot`
Leichte Sprache `aside.module > ul.linkliste > li > a.int`
Personensuche `aside.module > ul.linkliste > li > a.int`
Uni A-Z `aside.module > ul.linkliste > li > a.int`
Lageplan `aside.module > ul.linkliste > li > a.int`
Fachbereiche `aside.module > ul.linkliste > li > a.int`
Uni-Bibliothek `aside.module > ul.linkliste > li > a.int`
Vorlesungsverzeichnis `aside.module > ul.linkliste > li > a.int`
Studierendensekretariat `aside.module > ul.linkliste > li > a.int`
INDEX `nav.nav-footer > ul > li.js > a`
SITE MAP `nav.nav-footer > ul > li.js > a`
BARRIEREFREIHEIT `nav.nav-footer > ul > li.js > a`

These items highlight common accessibility best practices.

○Interactive controls are keyboard focusable

○Interactive elements indicate their purpose and state

○The page has a logical tab order

○Visual order on the page follows DOM order

○User focus is not accidentally trapped in a region

○The user's focus is directed to new content added to the page

○HTML5 landmark elements are used to improve navigation

○Offscreen content is hidden from assistive technology

○Custom controls have associated labels

○Custom controls have ARIA roles

●`[aria-*]` attributes match their roles

●`[aria-hidden="true"]` is not present on the document `<body>`

●`[role]`s have all required `[aria-*]` attributes

●`[role]` values are valid

●`[aria-*]` attributes have valid values

●`[aria-*]` attributes are valid and not misspelled

●Buttons have an accessible name

●Image elements have `[alt]` attributes

●Input buttons have discernible text.

●Form elements have associated labels

●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.

●ARIA attributes are used as specified for the element's role

●Elements use only permitted ARIA attributes

●Document has a `<title>` element

●`<html>` element has a `[lang]` attribute

●`<html>` element has a valid value for its `[lang]` attribute

●Links have a discernible name

●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).

●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements

●No element has a `[tabindex]` value greater than 0

●`[lang]` attributes have a valid value

●Skip links are focusable.

●Document has a main landmark.

●Deprecated ARIA roles were not used

●Uses ARIA roles only on compatible elements

○`[accesskey]` values are unique

○`button`, `link`, and `menuitem` elements have accessible names

○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.

○`[aria-hidden="true"]` elements do not contain focusable descendents

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.

○`[role]`s are contained by their required parent element

○Elements with the `role=text` attribute do not have focusable descendents.

○ARIA toggle fields have accessible names

○ARIA `tooltip` elements have accessible names

○ARIA `treeitem` elements have accessible names

○The page contains a heading, skip link, or landmark region

○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.

○Definition list items are wrapped in `<dl>` elements

○ARIA IDs are unique

○No form fields have multiple labels

○`<frame>` or `<iframe>` elements have a title

○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.

○`<input type="image">` elements have `[alt]` text

○Links are distinguishable without relying on color.

○The document does not use `<meta http-equiv="refresh">`

○`<object>` elements have alternate text

○Select elements have associated label elements.

○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.

○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.

○`<video>` elements contain a `<track>` element with `[kind="captions"]`

○Tables have different content in the summary attribute and `<caption>`.

○All heading elements contain content.

○Image elements do not have `[alt]` attributes that are redundant text.

○Identical links have the same purpose.

○Elements with visible text labels have matching accessible names.

○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.

○`<td>` elements in a large `<table>` have one or more table headers.

100

Best Practices

●Uses HTTPS

●Avoids deprecated APIs

●Avoids third-party cookies

●Allows users to paste into input fields

●Avoids requesting the geolocation permission on page load

●Avoids requesting the notification permission on page load

●Displays images with correct aspect ratio

●Serves images with appropriate resolution

●Page has the HTML doctype

●Properly defines charset

●No browser errors logged to the console

●No issues in the `Issues` panel in Chrome Devtools

●Ensure CSP is effective against XSS attacks

●Use a strong HSTS policy

●Ensure proper origin isolation with COOP

●Mitigate clickjacking with XFO or CSP

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

SEO

These checks ensure that your page is following basic search engine optimization advice. There are many additional factors Lighthouse does not score here that may affect your search ranking, including performance on Core Web Vitals. Learn more about Google Search Essentials.

Crawling and Indexing

Search engines may use `href` attributes on links to crawl websites. Ensure that the `href` attribute of anchor elements links to an appropriate destination, so more pages of the site can be discovered. Learn how to make links crawlable

Why this matters

Performance issues directly impact user engagement and conversion rates.

Uncrawlable Link
nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle `nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle`
nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle `nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle`
nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle `nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle`
nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle `nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle`
nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle `nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle`
nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle `nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle`
nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle `nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle`
nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle `nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle`
nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle `nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle`
nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle `nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle`
nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle `nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle`
nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle `nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle`
nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle `nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle`
nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle `nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle`
nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle `nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle`
nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle `nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle`
nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle `nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle`
nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle `nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle`
nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle `nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle`
nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle `nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle`
nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle `nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle`
nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle `nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle`
nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle `nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle`
nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle `nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle`
nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle `nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle`
nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle `nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle`
nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle `nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle`
nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle `nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle`
nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle `nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle`
nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle `nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle`
nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle `nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle`
nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle `nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle`
nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle `nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle`
nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle `nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle`
nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle `nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle`
nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle `nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle`
nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle `nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle`
nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle `nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle`
nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle `nav.nav-2015 > ul.nav-second-level > li.nav-item > a.nav-level-toggle`

To appear in search results, crawlers need access to your app.

○Structured data is valid

●Page isn’t blocked from indexing

●Document has a `<title>` element

●Document has a meta description

●Page has successful HTTP status code

●Links have descriptive text

●robots.txt is valid

●Image elements have `[alt]` attributes

●Document has a valid `hreflang`

○Document has a valid `rel=canonical`