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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.

87

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
tag.aticdn.net/piano-analytics.js14400.0 s27.8 KiB
static.chartbeat.com/js/chartbeat.js7200.0 s15.9 KiB
static.chartbeat.com/js/chartbeat_mab.js86400.0 s10.2 KiB

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.

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: Der Landtag von Rheinland-Pfalz - CDU, SPD und Grüne planen eine Verfassungsänd…
path: 1,HTML,1,BODY,2,DIV,1,DIV,0,MAIN,2,DIV,0,DIV,2,DIV,0,ARTICLE,1,HEADER,2,DIV,1,A,0,PICTURE,0,IMG
selector: div.image > a.teasertracking > picture > img
snippet: <img src="https://www.swr.de/swraktuell/rheinland-pfalz/1776781556788%2Cverfassungsa…" srcset="/swraktuell/rheinland-pfalz/1776781556788%2Cverfassungsaenderung-landtag-r…" sizes="(min-width: 1728px) calc(1728px / 2), (min-width: 1440px) calc(50vw - 64px…" class="" data-copyright="Foto: dpa Bildfunk, Picture Alliance" alt="Der Landtag von Rheinland-Pfalz - CDU, SPD und Grüne planen eine Verfassun…" width="320" height="180" decoding="async" loading="lazy" pinger-seen="true">

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

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
Karottenkuchen mit Frischkäse-Buttercreme div.image > a.teasertracking > picture > img
/leben/rezepte/kuchen-und-torte/1775826605132,karotten-ku...155.7 KiB100.4 KiB
Der VfB Stuttgart bejubelt den Halbfinalsieg 2013 gegen den SC Freiburg div.image > a.teasertracking > picture > img
/sport/fussball/1776763322720,jubel-vfb-pokal-2013-100~_v...44.3 KiB23.2 KiB
Upcycling vom Feinsten: Marius baut sich aus den alten Möbeln seiner Oma ein ne… div.image > a.teasertracking > picture > img
/video/sendungen-a-z/room-tour/1776700802228,upcycling-ma...37.8 KiB16.7 KiB
Die Feuerwehr hat in Idar-Oberstein einen Paketzusteller aus dem Laderaum seine… div.image > a.teasertracking > picture > img
/swraktuell/rheinland-pfalz/trier/1776773926729,feuerwehr...32.7 KiB11.6 KiB
Märkl und Ackermann zusammen beim Training in den österreichischen Bergen div.image > a.teasertracking > picture > img
/sport/media/1776753114660,maerkl-ackermann-training-100~...32.0 KiB10.9 KiB
Englische Schüler aus London div.image > a.teasertracking > picture > img
/swraktuell/baden-wuerttemberg/suedbaden/1776703633485,90...29.9 KiB8.8 KiB
Eine Schale Erdbeeren steht auf Stroh, das auf einem Erdbeerfeld ausgelegt ist. div.image > a.teasertracking > picture > img
/swraktuell/baden-wuerttemberg/1776737793905,erdbeeren-re...28.9 KiB7.8 KiB
Heißer Kampf: Die Finalserie Mannheim gegen Berlin div.image > a.teasertracking > picture > img
/sport/mehr-sport/1776770150645,adler-berlin-foto-kampf-1...28.1 KiB7.0 KiB
Eine rote Stoppkelle der Polizei. Im Kreis Konstanz hat die Polizei einen 15-jä… div.image > a.teasertracking > picture > img
/swraktuell/baden-wuerttemberg/friedrichshafen/1776775674...26.2 KiB5.1 KiB

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 Size
www.swr.de/assets/css/swr-neu.min.css?2a2a721c03ba3a82f14d8632bab1f99933.6 KiB
/assets/css/swr-neu-header-base.min.css?891c129dd902223a0...3.5 KiB

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

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 65.7 KiB
URLTransfer SizeEst Savings
www.swr.de/assets/css/swr-neu-ardplayer.min.css?fbdcc42903e89395f3c719bbdff233ad36.8 KiB36.8 KiB
www.swr.de/assets/css/swr-neu.min.css?2a2a721c03ba3a82f14d8632bab1f99933.4 KiB28.9 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 417.1 KiB
URLTransfer SizeEst Savings
www.swr.de/assets/ardplayer/7.11.0/ardplayer.js253.7 KiB196.9 KiB
www.swr.de/assets/firebasejs/12.1.0/firebase-firestore.js115.7 KiB107.3 KiB
www.swr.de/assets/js/swr-neu.min.js?b61c2ce6f39bccbba3d10a5ede0c7dc674.8 KiB42.9 KiB
www.swr.de/assets/js/common.min.js?685b9087d003e71fa2d41f9baa8ccad973.3 KiB37.9 KiB
www.swr.de/assets/firebasejs/12.1.0/firebase-auth.js41.7 KiB32.1 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 13.6 KiB
URLTransfer SizeEst Savings
www.swr.de/assets/firebasejs/12.1.0/firebase-app.js22.7 KiB13.6 KiB

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

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: 249 ms
URLTime Spent
swr.de/249 ms
www.swr.de/0.0 ms
●Time to Interactive 2.4 s
●Max Potential First Input Delay 120 ms
●Layout shift culprits
●Optimize DOM size
●Font display
●Forced reflow
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●Avoids enormous network payloads Total size was 1,913 KiB
●JavaScript execution time 0.2 s
●Minimizes main-thread work 0.7 s
●Avoid long main-thread tasks 1 long task found
●Image elements have explicit `width` and `height`
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 100 ms
●Server Backend Latencies 80 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 10 ms
○INP breakdown
○User Timing marks and measures
○Avoid non-composited animations
○Avoid large layout shifts
99

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.

Names and labels

Including a skip link can help users skip to the main content to save time. Learn more about skip links.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
zur Navigation div#skippy > ul.skiplinks > li > a.skiplink-text

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.

○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.
●`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
●Background and foreground colors have a sufficient contrast ratio
●`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
●Definition list items are wrapped in `<dl>` elements
●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
●Touch targets have sufficient size and spacing.
●Heading elements appear in a sequentially-descending order
●Document has a main landmark.
●Deprecated ARIA roles were not used
●Uses ARIA roles only on compatible elements
○`[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
○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 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.
○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.
○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.
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
The disableRemotePlayback attribute should be used in order to disable the default Cast integration instead of using -internal-media-controls-overlay-cast-button selector.
www.swr.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.

URLMap URL
www.swr.de/assets/ardplayer/7.11.0/ardplayer.js
www.swr.de/assets/js/swr-neu.min.js?b61c2ce6f39bccbba3d10a5ede0c7dc6www.swr.de/assets/js/swr-neu.min.js.map
www.swr.de/assets/js/swr-neu-videoplayer.min.js?d6eb0584ccf60c167d622ddb3da6d1ccwww.swr.de/assets/js/swr-neu-videoplayer.min.js.map
/assets/js/swr-neu-teaserkarussell.min.js?8334172741556b3...www.swr.de/assets/js/swr-neu-teaserkarussell.min.js.map
www.swr.de/assets/js/swr-neu-prefetch.min.js?6b30191b78729da2cbe7144ba62a0b60www.swr.de/assets/js/swr-neu-prefetch.min.js.map
www.swr.de/assets/js/swr-neu-playerbar.min.js?40c9dda3790300a1377b937adbc02a76www.swr.de/assets/js/swr-neu-playerbar.min.js.map
/assets/js/swr-neu-personalisierung.min.js?19851154ef75f3...www.swr.de/assets/js/swr-neu-personalisierung.min.js.map
/assets/js/swr-neu-page-indicator.min.js?c42ba3eec9c52224...www.swr.de/assets/js/swr-neu-page-indicator.min.js.map
www.swr.de/assets/js/swr-neu-modules.min.js?fc8ec1a29f45eee212d81c1b0ebd031dwww.swr.de/assets/js/swr-neu-modules.min.js.map
/assets/js/swr-neu-header-login.min.js?505c86e2b234e0b282...www.swr.de/assets/js/swr-neu-header-login.min.js.map
/assets/js/swr-neu-firebase-connector.min.js?d79c3013e4ff...www.swr.de/assets/js/swr-neu-firebase-connector.min.js.map
/assets/js/swr-neu-audioplayer-inline.min.js?c9896c24ca9c...www.swr.de/assets/js/swr-neu-audioplayer-inline.min.js.map
www.swr.de/assets/js/piano.min.js?307619c016a99112b6a561bcbc1a8a4cwww.swr.de/assets/js/piano.min.js.map
www.swr.de/assets/js/piano-swr.min.js?751332981ded7e0dc74f47ca796698aawww.swr.de/assets/js/piano-swr.min.js.map
www.swr.de/assets/js/common.min.js?685b9087d003e71fa2d41f9baa8ccad9www.swr.de/assets/js/common.min.js.map
www.swr.de/assets/js/common-toast.min.js?6ab41f361ca0c39f11470e69563280c9www.swr.de/assets/js/common-toast.min.js.map
/assets/js/common-external-link.min.js?4121eca60890ae1d34...www.swr.de/assets/js/common-external-link.min.js.map
www.swr.de/assets/js/common-copyrights.min.js?162a8df16a9b8381fc8eff0403808ab1www.swr.de/assets/js/common-copyrights.min.js.map
/assets/js/common-collapse-helper.min.js?e72d66b7d50bcf3a...www.swr.de/assets/js/common-collapse-helper.min.js.map
www.swr.de/assets/firebasejs/12.1.0/firebase-firestore.jswww.swr.de/assets/firebasejs/12.1.0/firebase-firestore.js.map
www.swr.de/assets/firebasejs/12.1.0/firebase-auth.jswww.swr.de/assets/firebasejs/12.1.0/firebase-auth.js.map
www.swr.de/assets/firebasejs/12.1.0/firebase-app.jswww.swr.de/assets/firebasejs/12.1.0/firebase-app.js.map
●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`

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