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

Audit breakdown by category with detailed findings.

56

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.

RequestCache TTLTransfer Size
i.ytimg.com/vi/mobdYwfB3T0/maxresdefault.jpg7200.0 s153.2 KiB
/dam/de/sd-web/iRTTVNfziBLA/260415-24-LexKoller-Teaser-RZ...1800.0 s115.9 KiB
webstats.ch.ch/matomo.js86400.0 s42.9 KiB
/dam/de/sd-web/pp5jDhRGmSW0/260415-27-Beherbergungsbranch...1800.0 s16.5 KiB
www.admin.ch/images/swiss-logo-name.svg86400.0 s7.9 KiB
www.admin.ch/images/swiss-logo-flag.svg86400.0 s5.6 KiB
/plugins/HeatmapSessionRecording/configs.php?idsite=3&tra...0.0 ms263 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:0.24720799999999998] map[node:map[boundingRect:map[bottom:2403 height:1533 left:0 right:1350 top:870 width:1350] lhId:page-10-SECTION nodeLabel:Fokus Verschärfung der Lex Koller Um der Wohnungsknappheit entgegenzuwirken, w… path:1,HTML,1,BODY,0,DIV,0,DIV,1,MAIN,0,DIV,0,DIV,5,SECTION selector:main#main-content > div > div > section#doc-1jhla1vj64 snippet:<section class="section bg--secondary-50" id="doc-1jhla1vj64" identifier="section"> type:node] score:0.162107 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:761 height:424 left:699 right:1302 top:337 width:603] lhId:page-0-IMG nodeLabel:div > figure > picture > img path:1,HTML,1,BODY,0,DIV,0,DIV,1,MAIN,0,DIV,0,DIV,2,SECTION,0,DIV,1,DIV,0,DIV,0,FIGURE,0,PICTURE,4,IMG selector:div > figure > picture > img snippet:<img alt="" aria-hidden="true" tabindex="-1" src="https://prod-govadminch-hcms-sdweb.imgix.net/dam/de/sd-web/ltVuSwcBLTIA/26…"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:4965 height:4708 left:0 right:1350 top:257 width:1350] lhId:page-17-MAIN nodeLabel:Der Bundesrat Die offizielle Seite der Schweizer Regierung. Mit den Informatio… path:1,HTML,1,BODY,0,DIV,0,DIV,1,MAIN selector:body.body--internet > div#__nuxt > div > main#main-content snippet:<main id="main-content"> type:node] score:0.084558 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:761 height:424 left:699 right:1302 top:337 width:603] lhId:page-0-IMG nodeLabel:div > figure > picture > img path:1,HTML,1,BODY,0,DIV,0,DIV,1,MAIN,0,DIV,0,DIV,2,SECTION,0,DIV,1,DIV,0,DIV,0,FIGURE,0,PICTURE,4,IMG selector:div > figure > picture > img snippet:<img alt="" aria-hidden="true" tabindex="-1" src="https://prod-govadminch-hcms-sdweb.imgix.net/dam/de/sd-web/ltVuSwcBLTIA/26…"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:1030 height:80 left:48 right:1302 top:950 width:1254] lhId:page-14-H2 nodeLabel:Fokus path:1,HTML,1,BODY,0,DIV,0,DIV,1,MAIN,0,DIV,0,DIV,5,SECTION,2,DIV,0,DIV,2,DIV,0,H2 selector:div#doc-container-grid-1776797377183-383 > div.container__full > div#doc-1jickeirk1 > h2#Fokus snippet:<h2 id="Fokus" class="section__title"> type:node] score:0.000543 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:761 height:424 left:699 right:1302 top:337 width:603] lhId:page-0-IMG nodeLabel:div > figure > picture > img path:1,HTML,1,BODY,0,DIV,0,DIV,1,MAIN,0,DIV,0,DIV,2,SECTION,0,DIV,1,DIV,0,DIV,0,FIGURE,0,PICTURE,4,IMG selector:div > figure > picture > img snippet:<img alt="" aria-hidden="true" tabindex="-1" src="https://prod-govadminch-hcms-sdweb.imgix.net/dam/de/sd-web/ltVuSwcBLTIA/26…"> type:node]] map[cause:Web font extra:map[type:url value:https://www.admin.ch/_nuxt/NotoSans-Regular.BWwJy672.ttf]] map[cause:Web font extra:map[type:url value:https://www.admin.ch/_nuxt/NotoSans-Bold.Df8eZg0f.ttf]]] 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.

URLEst Savings
fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff235 ms

A forced reflow occurs when JavaScript queries geometric properties (such as offsetWidth) after styles have been invalidated by a change to the DOM state. This can result in poor performance. Learn more about forced reflows and possible mitigations.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:78.338 source:map[type:text value:[unattributed]]]]

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.

URLResource SizeEst Savings
div > figure > picture > img div > figure > picture > img
/dam/de/sd-web/ltVuSwcBLTIA/260000-Umsetzung-Visuals-Hero...3.0 MiB3.0 MiB
div.grid > div#doc-1jmkr5m4r0 > div.card__image > img div.grid > div#doc-1jmkr5m4r0 > div.card__image > img
/2026/03/27/33d6b17b-c8ab-4ae4-a27a-e944ac1f42b3.gif?rect...361.1 KiB347.5 KiB
div.swiper-slide > div#3 > div.card__image > img div.swiper-slide > div#3 > div.card__image > img
/2026/03/04/1c7284dc-4943-4a04-8f37-7932b5ed1cf4.jpg?rect...113.8 KiB100.2 KiB
Der Gesamtbundesrat 2026 (von links nach rechts):Bundeskanzler Viktor Rossi, Bu… div.swiper-slide > div#2 > div.card__image > img
/2026/01/16/93b068e8-d755-43cc-91c1-509b5f5c77a1.jpeg?rec...100.8 KiB87.2 KiB
div.grid > div#doc-1jm2qff980 > div.card__image > img div.grid > div#doc-1jm2qff980 > div.card__image > img
/dam/de/sd-web/iRTTVNfziBLA/260415-24-LexKoller-Teaser-RZ...115.5 KiB82.2 KiB
div.grid > div#doc-1jickeirk2 > div.card__image > img div.grid > div#doc-1jickeirk2 > div.card__image > img
/2026/02/11/67d5d1af-e327-45d0-a7c5-246640355455.jpg?rect...81.8 KiB70.2 KiB
Saal Medienkonferenz im Medienzentrum div.swiper-slide > div#4 > div.card__image > img
/2026/03/05/b510dc63-b947-4e14-a54c-36426ce858b3.jpg?rect...55.1 KiB47.3 KiB
div.swiper-slide > div#1 > div.card__image > img div.swiper-slide > div#1 > div.card__image > img
/2026/02/12/6039f326-c13f-44b2-9685-364ce933c8d9.jpg?rect...21.6 KiB18.6 KiB
div.grid > div#doc-1jid6qcbe0 > div.card__image > img div.grid > div#doc-1jid6qcbe0 > div.card__image > img
/2025/10/08/cd6a2e1c-7d83-46a4-9483-0e3da1a40261.jpeg?rec...16.8 KiB14.4 KiB
div.grid > div#doc-1jm2qg50c1 > div.card__image > img div.grid > div#doc-1jm2qg50c1 > div.card__image > img
/dam/de/sd-web/pp5jDhRGmSW0/260415-27-Beherbergungsbranch...16.1 KiB10.5 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-0-IMG
nodeLabel: div > figure > picture > img
path: 1,HTML,1,BODY,0,DIV,0,DIV,1,MAIN,0,DIV,0,DIV,2,SECTION,0,DIV,1,DIV,0,DIV,0,FIGURE,0,PICTURE,4,IMG
selector: div > figure > picture > img
snippet: <img alt="" aria-hidden="true" tabindex="-1" src="https://prod-govadminch-hcms-sdweb.imgix.net/dam/de/sd-web/ltVuSwcBLTIA/26…">

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
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.

URLTransfer SizeDuration
www.admin.ch/_nuxt/entry.Dh8TlleG.css49.0 KiB82 ms
www.admin.ch/_nuxt/ContentZone.CHWbvGfX.css9.2 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: 527 ms
URLTime Spent
admin.ch/288 ms
www.admin.ch/239 ms
www.admin.ch/de0.0 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.

ElementLayout shift score
Fokus Verschärfung der Lex Koller Um der Wohnungsknappheit entgegenzuwirken, w… main#main-content > div > div > section#doc-1jhla1vj64
0.162
Der Bundesrat Die offizielle Seite der Schweizer Regierung. Mit den Informatio… body.body--internet > div#__nuxt > div > main#main-content
0.085
Fokus div#doc-container-grid-1776797377183-383 > div.container__full > div#doc-1jickeirk1 > h2#Fokus
0.001

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: 40 ms 38.4 KiB
URLTransfer SizeEst Savings
www.admin.ch/_nuxt/entry.Dh8TlleG.css43.6 KiB38.4 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: 320 ms 444.2 KiB
URLTransfer SizeEst Savings
www.admin.ch/_nuxt/B-Ywra98.js253.7 KiB160.4 KiB
www.admin.ch/_nuxt/C96fLYZJ.js133.8 KiB122.5 KiB
www.admin.ch/_nuxt/uE6ScQDx.js145.1 KiB70.3 KiB
www.admin.ch/_nuxt/B3PID3-R.js89.2 KiB38.2 KiB
www.admin.ch/_nuxt/DgrR4CBj.js100.2 KiB31.8 KiB
webstats.ch.ch/matomo.js42.7 KiB20.9 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.

URLTransfer Size
/dam/de/sd-web/ltVuSwcBLTIA/260000-Umsetzung-Visuals-Hero...3.0 MiB
www.youtube-nocookie.com/s/player/218d9d92/player_embed_es6.vflset/en_US/base.js435.8 KiB
/2026/03/27/33d6b17b-c8ab-4ae4-a27a-e944ac1f42b3.gif?rect...361.5 KiB
/s/_/ytembeds/_/js/k=ytembeds.base.en_US.CYE28xQTWxU.2021...330.7 KiB
www.admin.ch/_nuxt/NotoSans-Regular.BWwJy672.ttf286.4 KiB
www.admin.ch/_nuxt/NotoSans-Bold.Df8eZg0f.ttf284.6 KiB
www.admin.ch/_nuxt/B-Ywra98.js262.2 KiB
i.ytimg.com/vi/mobdYwfB3T0/maxresdefault.jpg153.2 KiB
www.admin.ch/_nuxt/uE6ScQDx.js150.7 KiB
www.admin.ch/_nuxt/C96fLYZJ.js139.2 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
div > figure > picture > img div > figure > picture > img
/dam/de/sd-web/ltVuSwcBLTIA/260000-Umsetzung-Visuals-Hero...

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

●Max Potential First Input Delay 100 ms
●Optimize DOM size
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●JavaScript execution time 0.3 s
●Minimizes main-thread work 0.7 s
●Avoid long main-thread tasks 3 long tasks found
●Avoid non-composited animations 2 animated elements found
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 30 ms
●Server Backend Latencies 70 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 60 ms
○INP breakdown
○User Timing marks and measures
90

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
Letzte Konferenzen des Bundesrates div#doc-container-grid-1776797377183-691 > div.container__center--sm > p#doc-1jh1f1icj0 > a.link--external

These are opportunities to improve the legibility of your content.

Names and labels

Screen reader users rely on frame titles to describe the contents of frames. Learn more about frame titles.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.ratio > figure > div.ratio > iframe div.ratio > figure > div.ratio > iframe

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Internationalization and localization

If a page doesn't specify a `lang` attribute, a screen reader assumes that the page is in the default language that the user chose when setting up the screen reader. If the page isn't actually in the default language, then the screen reader might not announce the page's text correctly. Learn more about the `lang` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html html

These are opportunities to improve the interpretation of your content by users in different locales.

Visible text labels that do not match the accessible name can result in a confusing experience for screen reader users. Learn more about accessible names.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Der Bundesrat  Das Portal der Schweizer Regierung div > div#top-header > div.container > a.logo
○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
●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.
●Select elements have associated label elements.
●`button`, `link`, and `menuitem` elements have accessible names
●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
●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
●Touch targets have sufficient size and spacing.
●Heading elements appear in a sequentially-descending order
●Skip links are focusable.
●Document has a main landmark.
●Deprecated ARIA roles were not used
●Identical links have the same purpose.
○`[accesskey]` values are unique
○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 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
○`<html>` element has a valid value for its `[lang]` attribute
○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
○Input buttons have discernible text.
○`<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
○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.
○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.
81

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 / WarningSource
Specifying overflow: visible on img, video and canvas tags may cause them to produce visual content outside of the element bounds. See https://github.com/WICG/shared-element-transitions/blob/main/debugging_overflow_on_images.md.
www.admin.ch/de

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.admin.ch/_nuxt/uE6ScQDx.js
www.admin.ch/_nuxt/C96fLYZJ.js
www.admin.ch/_nuxt/B-Ywra98.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 DOM-based XSS with Trusted Types
○Redirects HTTP traffic to HTTPS
○Mitigate clickjacking with XFO or CSP
○Detected JavaScript libraries
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`

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