Lighthouse Desktop

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

SCORE

GRADE

FIX

REVIEW

PASS

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.

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
www.unibe.ch/assets/fonts/FrutigerNeueLTW06-Bold.woff2	75 ms
www.unibe.ch/assets/fonts/FrutigerNeueLTW06-Regular.woff2	70 ms
www.unibe.ch/assets/fonts/FrutigerNeueLTW06-Light.woff2	70 ms
www.unibe.ch/assets/fonts/unibe-iconset-v03.woff?3q5tzh	65 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
div#e1255427 > div.container > div.mdl-teaser_container__image-container > img.mdl-teaser_container__image `div#e1255427 > div.container > div.mdl-teaser_container__image-container > img.mdl-teaser_container__image`	www.unibe.ch/unibe/portal/content/e1255427/unibe_202406_03100_3903_1280_ger.png	2.1 MiB	1.9 MiB
Vasquez Reise `section.newscontainer_home > div#e1802686 > div.mdl-portal_hero__image-container > img.mdl-portal_hero__image`	/unibe/portal/content/e1802686/HERO_Vasquez_Reise_c_Schof...	360.6 KiB	161.1 KiB
Patrick Bigler beim Schweissen `a.mdl-teaser_element__link > div.mdl-teaser_element__texts > div.mdl-teaser_element__image > img`	/unibe/portal/content/e1256411/teaser_item1793418/Patrick...	188.9 KiB	146.7 KiB
Hörsaal Universität Bern `a.mdl-teaser_element__link > div.mdl-teaser_element__texts > div.mdl-teaser_element__image > img`	/unibe/portal/content/e1255427/teaser_item1796323/juniora...	110.2 KiB	108.4 KiB
Erfolgreiche angewandte Forschungs-Zusammenarbeit in Bern wird verlängert – Unt… `a.mdl-teaser_element__link > div.mdl-teaser_element__texts > div.mdl-teaser_element__image > img`	/unibe/portal/content/e1255815/teaser_item1802901/2026041...	97.0 KiB	95.2 KiB
Amith Kamath Uni Bern `a.mdl-teaser_element__link > div.mdl-teaser_element__texts > div.mdl-teaser_element__image > img`	/unibe/portal/content/e1256411/teaser_item1771200/AmithKa...	136.4 KiB	94.2 KiB
Students4Sustainability `a.mdl-teaser_element__link > div.mdl-teaser_element__texts > div.mdl-teaser_element__image > img`	/unibe/portal/content/e1255427/teaser_item1799725/Student...	95.9 KiB	94.1 KiB
Studierende in Bern `a.mdl-teaser_element__link > div.mdl-teaser_element__texts > div.mdl-teaser_element__image > img`	/unibe/portal/content/e1255427/teaser_item1496224/Studium...	80.4 KiB	78.6 KiB
Kathrin Summermatter `a.mdl-teaser_element__link > div.mdl-teaser_element__texts > div.mdl-teaser_element__image > img`	/unibe/portal/content/e1256411/teaser_item1801246/2026040...	67.9 KiB	28.1 KiB
Simon Wieland Student an der Universität Bern beim Speerwurf `a.mdl-teaser_element__link > div.mdl-teaser_element__texts > div.mdl-teaser_element__image > img`	/unibe/portal/content/e1256411/teaser_item1773545/Simon_W...	69.0 KiB	26.6 KiB
Oliver Schib `a.mdl-teaser_element__link > div.mdl-teaser_element__texts > div.mdl-teaser_element__image > img`	/unibe/portal/content/e1256411/teaser_item1803607/2026042...	56.4 KiB	23.4 KiB
Kind an der Tafel `a.mdl-teaser_element__link > div.mdl-teaser_element__texts > div.mdl-teaser_element__image > img`	/unibe/portal/content/e1255815/teaser_item1803604/Mit_Spr...	47.7 KiB	19.8 KiB
Thomas Becher `a.mdl-teaser_element__link > div.mdl-teaser_element__texts > div.mdl-teaser_element__image > img`	/unibe/portal/content/e1256411/teaser_item1800192/Thomas_...	42.4 KiB	9.0 KiB
Eva Schürch `a.mdl-teaser_element__link > div.mdl-teaser_element__texts > div.mdl-teaser_element__image > img`	/unibe/portal/content/e1256411/teaser_item1800840/2026040...	42.3 KiB	9.0 KiB

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: Vasquez Reise

path: 1,HTML,1,BODY,0,DIV,2,SECTION,0,DIV,0,DIV,0,IMG

selector: section.newscontainer_home > div#e1802686 > div.mdl-portal_hero__image-container > img.mdl-portal_hero__image

snippet: <img class="mdl-portal_hero__image" src="/unibe/portal/content/e1802686/HERO_Vasquez_Reise_c_Schoffling_Vers3_ger.j…" alt="Vasquez Reise">

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

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.unibe.ch/assets/js/head.js	31.1 KiB
www.unibe.ch/assets/css/main.min.css	52.4 KiB	80 ms
fonts.googleapis.com/css2?family=Merriweather:wght@700&display=swap	1.1 KiB	268 ms
www.unibe.ch/content/metaobj_manager/ZMSDataTable.datatables.min.css	22.5 KiB
www.unibe.ch/unibe_theme_portal_2022/css/web.css	20.4 KiB

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
/unibe/portal/content/e809/e118253/e1497109/unibe_02666_2...	0.0 ms	38.4 KiB
code.etracker.com/code/e.js	14400.0 s	31.5 KiB

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: 305 ms

URL	Time Spent
unibe.ch/	305 ms
www.unibe.ch/	0.0 ms

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: 260 ms 385.7 KiB

URL	Transfer Size	Est Savings
www.unibe.ch/content/metaobj_manager/ZMSSurveyJS.survey-core.min.css	298.7 KiB	296.8 KiB
www.unibe.ch/assets/css/main.min.css	52.2 KiB	46.9 KiB
www.unibe.ch/content/metaobj_manager/ZMSDataTable.datatables.min.css	22.2 KiB	22.2 KiB
www.unibe.ch/unibe_theme_portal_2022/css/web.css	20.0 KiB	19.8 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: 200 ms 1.6 MiB

URL	Transfer Size	Est Savings
www.unibe.ch/content/metaobj_manager/ZMSSurveyJS.survey-core.min.js	1.4 MiB	962.4 KiB
www.unibe.ch/assets/js/main.min.js	268.5 KiB	206.6 KiB
www.unibe.ch/content/metaobj_manager/ZMSSurveyJS.survey-js-ui.min.js	289.7 KiB	164.3 KiB
www.unibe.ch/content/metaobj_manager/ZMSDataTable.datatables.min.js	169.7 KiB	127.6 KiB
www.unibe.ch/assets/js/legacy/vendor/jquery_unibe.ui.js	85.3 KiB	74.6 KiB
www.unibe.ch/assets/js/legacy/scripts.min.js	79.1 KiB	47.8 KiB
www.unibe.ch/assets/js/head.js	30.9 KiB	21.3 KiB

Minifying CSS files can reduce network payload sizes. Learn how to minify CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 5.1 KiB

URL	Transfer Size	Est Savings
www.unibe.ch/unibe_theme_portal_2022/css/web.css	20.4 KiB	5.1 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 61.7 KiB

URL	Transfer Size	Est Savings
www.unibe.ch/assets/js/legacy/scripts.min.js	79.1 KiB	30.7 KiB
www.unibe.ch/assets/js/legacy/vendor/jquery_unibe.ui.js	85.3 KiB	28.0 KiB
www.unibe.ch/++resource++zms_/zmi.core.js	13.9 KiB	3.1 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
/unibe/portal/content/e1256930/DasistBern_PortalTeaser192...	2.1 MiB
www.unibe.ch/unibe/portal/content/e1255427/unibe_202406_03100_3903_1280_ger.png	2.1 MiB
www.unibe.ch/content/metaobj_manager/ZMSSurveyJS.survey-core.min.js	1.4 MiB
/unibe/portal/content/e1256742/teaser_item1732937/initiat...	569.2 KiB
/unibe/portal/content/e1802686/HERO_Vasquez_Reise_c_Schof...	361.3 KiB
www.unibe.ch/content/metaobj_manager/ZMSSurveyJS.survey-i18n.min.js	338.9 KiB
www.unibe.ch/content/metaobj_manager/ZMSSurveyJS.survey-core.min.css	299.4 KiB
www.unibe.ch/content/metaobj_manager/ZMSSurveyJS.survey-js-ui.min.js	290.4 KiB
www.unibe.ch/assets/js/main.min.js	268.7 KiB
/unibe/portal/content/e1256411/teaser_item1793418/Patrick...	189.4 KiB

Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL
Universität Bern `header > div.container > a > img.site-logo`	www.unibe.ch/assets/media/image/logo_unibern@2x.png
Akkreditierung `div.row > div.footer__partner-logos > a > img`	www.unibe.ch/assets/media/image/logo-sakkr.svg
/universitaet/portraet/vision/index_ger.html `div.footer__claim > div.footer__logo--claim > a > img`	www.unibe.ch/assets/media/image/unibe-claim_ger.svg
Universität Bern `div.container > div.footer__claim > div.footer__logo--unibern > img`	www.unibe.ch/assets/media/image/logo-uni-bern.svg
Swiss University `div.row > div.footer__partner-logos > a > img.footer-logo-swissuniversity`	www.unibe.ch/assets/media/image/logo-swissuniversities.svg

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

●Max Potential First Input Delay 80 ms

●Layout shift culprits

●Optimize DOM size

●Forced reflow

●LCP breakdown

●Modern HTTP

●Optimize viewport for mobile

●JavaScript execution time 0.3 s

●Minimizes main-thread work 0.6 s

●Avoid long main-thread tasks 3 long tasks found

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 40 ms

●Server Backend Latencies 50 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 80 ms

●Avoid large layout shifts 1 layout shift found

○INP breakdown

○User Timing marks and measures

○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.

ARIA

Some ARIA parent roles must contain specific child roles to perform their intended accessibility functions. Learn more about roles and required children elements.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
UNIVERSITÄT STUDIUM FORSCHUNG INNOVATION LIFELONG LEARNING `div.container > div.view-container > div.overall > ul.level-1`

Some ARIA child roles must be contained by specific parent roles to properly perform their intended accessibility functions. Learn more about ARIA roles and required parent element.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
UNIVERSITÄT `div.overall > ul.level-1 > li > a#mainnav-tab-1`
STUDIUM `div.overall > ul.level-1 > li > a#mainnav-tab-2`
FORSCHUNG `div.overall > ul.level-1 > li > a#mainnav-tab-3`
INNOVATION `div.overall > ul.level-1 > li > a#mainnav-tab-4`
LIFELONG LEARNING `div.overall > ul.level-1 > li > a#mainnav-tab-5`

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

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
Herbstsemester 2026 `a.mdl-teaser_element__link > div.mdl-teaser_element__texts > div.mdl-teaser_element__topic > p`
Students4Sustainability `a.mdl-teaser_element__link > div.mdl-teaser_element__texts > div.mdl-teaser_element__topic > p`
Forschungskarriere starten? `a.mdl-teaser_element__link > div.mdl-teaser_element__texts > div.mdl-teaser_element__topic > p`
Studieninteressierte `section.row > ul.reset-list > li > a`
Studierende `section.row > ul.reset-list > li > a`
Internationale Studierende `section.row > ul.reset-list > li > a`
Doktorierende / PhD `section.row > ul.reset-list > li > a`
Forschende `section.row > ul.reset-list > li > a`
Dozierende `section.row > ul.reset-list > li > a`
Alumni `section.row > ul.reset-list > li > a`
Weiterbildungsinteressierte `section.row > ul.reset-list > li > a`
Mitarbeitende `section.row > ul.reset-list > li > a`
Förderinnen/Förderer `section.row > ul.reset-list > li > a`
International `section.row > ul.reset-list > li > a`
Stelleninteressierte `section.row > ul.reset-list > li > a`

These are opportunities to improve the legibility of your content.

Tables and lists

Screen readers require list items (`<li>`) to be contained within a parent `<ul>`, `<ol>` or `<menu>` to be announced properly. Learn more about proper list structure.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
UNIVERSITÄT `div.view-container > div.overall > ul.level-1 > li`
STUDIUM `div.view-container > div.overall > ul.level-1 > li`
FORSCHUNG `div.view-container > div.overall > ul.level-1 > li`
INNOVATION `div.view-container > div.overall > ul.level-1 > li`
LIFELONG LEARNING `div.view-container > div.overall > ul.level-1 > li`

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Best practices

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html.js `html.js`

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

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

●`[accesskey]` values are unique

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

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

●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>`).

●Touch targets have sufficient size and spacing.

●Heading elements appear in a sequentially-descending order

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

●Deprecated ARIA roles were not used

●Identical links have the same purpose.

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

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

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○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

○Input buttons have discernible text.

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

○Form elements have associated labels

○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.

○Skip links are focusable.

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

○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.

○`[lang]` attributes have a valid value

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

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

○All heading elements contain content.

○Uses ARIA roles only on compatible elements

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

○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.

Best Practices

General

Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / Warning	Source
Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user's experience. For more help, check https://xhr.spec.whatwg.org/.	www.unibe.ch/assets/js/legacy/scripts.min.js line 3782, col 21

Source maps translate minified code to the original source code. This helps developers debug in production. In addition, Lighthouse is able to provide further insights. Consider deploying source maps to take advantage of these benefits. Learn more about source maps.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL
www.unibe.ch/content/metaobj_manager/ZMSSurveyJS.survey-core.min.js
www.unibe.ch/assets/js/main.min.js

●Uses HTTPS

●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

○Redirects HTTP traffic to HTTPS

100

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.

○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

●Links are crawlable

●robots.txt is valid

●Image elements have `[alt]` attributes

●Document has a valid `hreflang`

○Document has a valid `rel=canonical`