Lighthouse Mobile
· 0 checks — Mobile Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.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.
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
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.
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.
Performance issues directly impact user engagement and conversion rates.
Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size
Performance issues directly impact user engagement and conversion rates.
| URL | Resource Size | Est Savings | |
|---|---|---|---|
Titelfoto des Artikels article.large > p > a > img | /images/news/2026-05-09-betze-comic-233-ehre-wem-ehre-geb... | 576.9 KiB | 511.0 KiB |
Titelfoto des Artikels div.article-small > div.article-small-image > a > img | www.der-betze-brennt.de/images/news/thumbnails/2026-05-10-spielszene-scp-svd.jpg | 20.3 KiB | 16.2 KiB |
Logo: Der Betze brennt div#headline > div.main-nav-logo > a > img | www.der-betze-brennt.de/logo.png | 16.6 KiB | 15.5 KiB |
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.
Performance issues directly impact user engagement and conversion rates.
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.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Duration |
|---|---|---|
| code.jquery.com/jquery-3.7.1.min.js | 30.0 KiB | 903 ms |
| www.der-betze-brennt.de/css/mobile.css?v=20250715 | 1.2 KiB | |
| www.der-betze-brennt.de/css/news-overview.css?v=11102025 | 924 B | |
| www.der-betze-brennt.de/css/style.css?v=20260506-2 | 4.5 KiB | |
| www.der-betze-brennt.de/css/tables.css?v=20260506-2 | 2.0 KiB |
These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.
The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.
Performance issues directly impact user engagement and conversion rates.
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.
Performance issues directly impact user engagement and conversion rates.
Diagnostics
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Est Savings |
|---|---|---|
| cdn.vlyby.com/qad/prebid.js | 216.6 KiB | 172.1 KiB |
| cperf.sportplatz-media.com/derbetzebrennt/Relaunch/der-betze-brennt.de_Home.js | 155.4 KiB | 139.7 KiB |
| cdn.confiant-integrations.net/gptprebidnative/202604301904/wrap.js | 139.6 KiB | 87.1 KiB |
| cdn.vlyby.com/qad/qad-outer2.js | 113.9 KiB | 65.7 KiB |
| www.googletagmanager.com/gtag/js?id=G-N8LTVQBFCX | 157.7 KiB | 63.8 KiB |
| www.googletagmanager.com/gtm.js?id=GTM-KL8XG83 | 118.6 KiB | 62.2 KiB |
| cdn.consentmanager.net/delivery/js/cmp_en.min.js | 101.0 KiB | 36.2 KiB |
| code.jquery.com/jquery-3.7.1.min.js | 29.6 KiB | 22.5 KiB |
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to reduce Javascript execution time.
Performance issues directly impact user engagement and conversion rates.
| URL | Total CPU Time | Script Evaluation | Script Parse |
|---|---|---|---|
| /delivery/customdata/bV8xLndfMjk0Nzgucl9HRFBSLmxfZW4uZF8x... | 1.8 s | 1.7 s | 31 ms |
| www.der-betze-brennt.de/ | 1.0 s | 412 ms | 13 ms |
| Unattributable | 890 ms | 24 ms | 0.0 ms |
| cdn.confiant-integrations.net/gptprebidnative/202604301904/wrap.js | 735 ms | 633 ms | 59 ms |
| cdn.vlyby.com/qad/prebid.js | 645 ms | 495 ms | 149 ms |
| www.googletagmanager.com/gtag/js?id=G-N8LTVQBFCX | 553 ms | 454 ms | 90 ms |
| www.der-betze-brennt.de/cdn-cgi/challenge-platform/scripts/jsd/main.js | 531 ms | 513 ms | 5.4 ms |
| cdn.vlyby.com/qad/qad-outer2.js | 522 ms | 402 ms | 101 ms |
| www.googletagmanager.com/gtm.js?id=GTM-KL8XG83 | 383 ms | 275 ms | 83 ms |
| cperf.sportplatz-media.com/derbetzebrennt/Relaunch/der-betze-brennt.de_Home.js | 191 ms | 23 ms | 167 ms |
| cdn.consentmanager.net/delivery/js/cmp_en.min.js | 165 ms | 64 ms | 94 ms |
| /BKfzuLjOMBdYxzEWRd-U-Wc-6Ho/gpt_and_prebid/config.js | 150 ms | 62 ms | 87 ms |
| code.jquery.com/jquery-3.7.1.min.js | 126 ms | 75 ms | 19 ms |
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work
Performance issues directly impact user engagement and conversion rates.
| Category | Time Spent |
|---|---|
| Script Evaluation | 5.1 s |
| Other | 981 ms |
| Script Parsing & Compilation | 902 ms |
| Style & Layout | 381 ms |
| Garbage Collection | 158 ms |
| Parse HTML & CSS | 105 ms |
| Rendering | 61 ms |
Many navigations are performed by going back to a previous page, or forwards again. The back/forward cache (bfcache) can speed up these return navigations. Learn more about the bfcache
Performance issues directly impact user engagement and conversion rates.
| Failure reason | Failure type |
|---|---|
| Pages with cache-control:no-store header cannot enter back/forward cache. | Actionable |
| Pages whose main resource has cache-control:no-store cannot enter back/forward cache. | Not actionable |
| Back/forward cache is disabled because some JavaScript network request received resource with Cache-Control: no-store header. | Not actionable |
Minifying JavaScript files can reduce payload sizes and script parse time. Learn how to minify JavaScript.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Est Savings |
|---|---|---|
| cperf.sportplatz-media.com/derbetzebrennt/Relaunch/der-betze-brennt.de_Home.js | 155.4 KiB | 19.1 KiB |
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.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Est Savings |
|---|---|---|
| cdn.vlyby.com/qad/qimad-full2.css | 13.7 KiB | 13.7 KiB |
Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.
Performance issues directly impact user engagement and conversion rates.
Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions
Performance issues directly impact user engagement and conversion rates.
| URL | |
|---|---|
Titelfoto des Artikels article.large > p > a > img | /images/news/2026-05-09-betze-comic-233-ehre-wem-ehre-geb... |
Logo: Der Betze brennt div#headline > div.main-nav-logo > a > img | www.der-betze-brennt.de/logo.png |
Logo: Deutschlands bester Fußball-Blog 2021 div.footline-flexbox-column > p > a > img | www.der-betze-brennt.de/images/system/footer/bester-fussball-blog-2021-png24.png |
Nicht eingeloggt div#headline > div.main-nav-login > a > img | www.der-betze-brennt.de/images/system/header/icon-user-logout.png |
Komplettes Menü anzeigen div#headline > div.main-nav-fullmenu > a > img | www.der-betze-brennt.de/images/system/header/icon-menu.png |
Der Betze brennt ist dem Andenken an den größten deutschen Fußballspieler aller… div.footline-flexbox-column > p > a > img | www.der-betze-brennt.de/images/system/footer/fritz-walter.png |
Facebook footer > div#footline-copyright > a > img | www.der-betze-brennt.de/images/system/footer/icon-social-media-facebook.png |
Instagram footer > div#footline-copyright > a > img | www.der-betze-brennt.de/images/system/footer/icon-social-media-instagram.png |
Bluesky footer > div#footline-copyright > a > img | www.der-betze-brennt.de/images/system/footer/icon-social-media-bluesky.png |
X footer > div#footline-copyright > a > img | www.der-betze-brennt.de/images/system/footer/icon-social-media-x.png |
Threads footer > div#footline-copyright > a > img | www.der-betze-brennt.de/images/system/footer/icon-social-media-threads.png |
YouTube footer > div#footline-copyright > a > img | www.der-betze-brennt.de/images/system/footer/icon-social-media-youtube.png |
Neues vom Betze div#sticky-footer-nav-flexbox > div.sticky-footer-nav-flexelement > a > img | www.der-betze-brennt.de/images/system/footer/icon-news-small.png |
Spieltage div#sticky-footer-nav-flexbox > div.sticky-footer-nav-flexelement > a > img | www.der-betze-brennt.de/images/system/footer/icon-gameday-small.png |
Diskussionsforum div#sticky-footer-nav-flexbox > div.sticky-footer-nav-flexelement > a > img | www.der-betze-brennt.de/images/system/footer/icon-board-small.png |
Seite durchsuchen div#sticky-footer-nav-flexbox > div.sticky-footer-nav-flexelement > a > img | www.der-betze-brennt.de/images/system/footer/icon-search-small.png |
More information about the performance of your application. These numbers don't directly affect the Performance score.
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.
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.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
Die Lage der Liga body > main > article.small > h3 |
Betze-Comic body > main > article.large > h3 |
Taktik-Nachlese zum Spiel FCK-DSC body > main > article.large > h3 |
Transfer-Ticker body > main > article.small > h3 |
Blick in die Kurve body > main > article.large > h3 |
Fotos body > main > article.small > h3 |
Interaktiv body > main > article.large > h3 |
Fotos body > main > article.small > h3 |
Fotos body > main > article.large > h3 |
Stimmen zum Spiel body > main > article.large > h3 |
Neues vom Betzenberg body > main > article.small > h3 |
Ergebnismeldung body > main > article.large > h3 |
Transfer-Ticker body > main > article.small > h3 |
Vorbericht: 1. FC Kaiserslautern - Arminia Bielefeld body > main > article.small > h3 |
Im Blickpunkt: Vorstellung des neuen FCK-Geschäftsführers Marc Strauß body > main > article.large > h3 |
Neues vom Betzenberg body > main > article.large > h3 |
Fotos body > main > article.small > h3 |
Neues vom Betzenberg body > main > article.large > h3 |
Pressekonferenz body > main > article.large > h3 |
Neues vom Betzenberg body > main > article.large > h3 |
Neues vom Betzenberg body > main > article.small > h3 |
Im Blickpunkt body > main > article.large > h3 |
Neues vom Betzenberg body > main > article.small > h3 |
Neues vom Betzenberg body > main > article.small > h3 |
Transfer-Ticker body > main > article.small > h3 |
Gegner-Check body > main > article.small > h3 |
These are opportunities to improve keyboard navigation in your application.
Contrast
Low-contrast text is difficult or impossible for many users to read. Link text that is discernible improves the experience for users with low vision. Learn how to make links distinguishable.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
531 third parties div#cmpboxcontent > div.cmpboxtxtdiv > div.cmpboxtxt > a.cmplink |
These are opportunities to improve the legibility of your content.
Names and labels
Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
main > article.large > p > a main > article.large > p > a |
main > article.large > p > a main > article.large > p > a |
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.
Best Practices
User Experience
Image natural dimensions should be proportional to the display size and the pixel ratio to maximize image clarity. Learn how to provide responsive images.
Performance issues directly impact user engagement and conversion rates.
| URL | Displayed size | Actual size | Expected size | |
|---|---|---|---|---|
Language: en body > div#cmpbox > div#cmplanguage > img.cmplangicon | cdn.consentmanager.net/delivery/flags/en.gif | 16 x 11 | 16 x 11 | 24 x 17 |
General
Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.
Performance issues directly impact user engagement and conversion rates.
| Deprecation / Warning | Source |
|---|---|
| SharedStorage | |
| StorageType.persistent is deprecated. Please use standardized navigator.storage instead. | |
| Fledge |
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
Performance issues directly impact user engagement and conversion rates.
| Uncrawlable Link |
|---|
header > div#headline > div.main-nav-search > a |
Nicht eingeloggt header > div#headline > div.main-nav-login > a |
Komplettes Menü anzeigen header > div#headline > div.main-nav-fullmenu > a |
To appear in search results, crawlers need access to your app.