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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.

90

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
cdn.piano.io/api/tinypass.min.js14400.0 s132.9 KiB
cmp-sp.tagesspiegel.de/Notice.8f529.js3600.0 s79.8 KiB
cdn.privacy-mgmt.com/wrapperMessagingWithoutDetection.js3600.0 s53.5 KiB
/fonts/Abril_Text_BoldItalic-basic.1cd71e407d313b5db30f65...0.0 ms36.0 KiB
/fonts/Abril_Text_Italic-basic.6c5932e5019579d6c76d1822e5...0.0 ms34.0 KiB
/fonts/Abril_Text_Bold-basic.ed72f8ea0597f63d7cc1a47ae7bb...0.0 ms32.3 KiB
cp.tagesspiegel.de/now.js600.0 s35.2 KiB
cdn.cxense.com/cx.js3600.0 s38.1 KiB
cdn.cxense.com/cx.js3600.0 s38.1 KiB
/fonts/Abril_Text_Regular-basic.c371b6fb87298eb4990a97124...0.0 ms30.2 KiB
/fonts/abril_text_bold-webfont-subset-basic-de.52c0d810a4...0.0 ms29.2 KiB
/fonts/abril_text_regular-webfont-subset-basic-de.ccb628c...0.0 ms28.1 KiB
/fonts/Abril_Text_Bold-extended.7e1a83a609780222181670109...0.0 ms24.9 KiB
cl.k5a.io/61485a1ee16cdd72901684f3.module.js3600.0 s30.6 KiB
mein.tagesspiegel.de/assets/js/piano.js300.0 s24.2 KiB
/fonts/Abril_Text_Regular-extended.413ee6f014cfa7c05f2979...0.0 ms22.9 KiB
/fonts/franklingothic-book-webfont-subset-basic-de.eee397...0.0 ms17.3 KiB
/fonts/franklingothic-med-webfont-subset-basic-de.92d281f...0.0 ms17.2 KiB
/fonts/franklingothic-book-extended.b0f1fe099d20b0de899ed...0.0 ms15.2 KiB
/fonts/franklingothic-book-basic.c62561d04e5eb023ca3e2fde...0.0 ms12.0 KiB
/fonts/franklingothic-med-basic.4262342c15da29dbdffaff795...0.0 ms12.0 KiB
cmp-sp.tagesspiegel.de/Notice.30929.css3600.0 s6.9 KiB
/ng/common/i18n/platform-translation-map_en_US.js?version...86400.0 s13.8 KiB
cdn.cxense.com/cx.cce.js3600.0 s6.8 KiB
/_sam/H4sIAAAAAAAA_z3IwQ6AIAgA0B9KmJ76m4bJHI6oBa7f7-bt7eE...562375.0 s43.9 KiB
vx.tagesspiegel.de/widget/dist/template/css/template.bundle.1.0.css1200.0 s5.2 KiB
/showtemplate/general/loadTranslationMap?aid=7WsjhY1bpe&v...86400.0 s10.3 KiB
cmp-sp.tagesspiegel.de/polyfills.01516.js3600.0 s2.2 KiB
assets.tagesspiegel.de/styles/fonts.aad117e3a5ecd54bed0c579409735761.css0.0 ms1.4 KiB
vx.tagesspiegel.de/widget/dist/template/css/img/fail-icon.png1200.0 s1.5 KiB
cl.k5a.io/61485a1ee16cdd72901684f3.js3600.0 s648 B
/Repo/rep.gif?ver=3.3.0&typ=pgv&rnd=mo93ywbnku1kmg68&sid=...0.0 ms412 B
mein.tagesspiegel.de/assets/svg/cross-white.svg300.0 s329 B
/fonts/Abril_Text_Bold-basic.ed72f8ea0597f63d7cc1a47ae7bb...0.0 ms0 B
/fonts/Abril_Text_Bold-basic.ed72f8ea0597f63d7cc1a47ae7bb...0.0 ms0 B
/fonts/Abril_Text_Regular-basic.c371b6fb87298eb4990a97124...0.0 ms0 B
/fonts/Abril_Text_Regular-basic.c371b6fb87298eb4990a97124...0.0 ms0 B
/fonts/franklingothic-book-basic.c62561d04e5eb023ca3e2fde...0.0 ms0 B
/fonts/franklingothic-book-basic.c62561d04e5eb023ca3e2fde...0.0 ms0 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:0.105486] map[node:map[boundingRect:map[bottom:1283 height:665 left:169 right:1167 top:618 width:998] lhId:page-1-::after nodeLabel:div.tspA2jq > div.tspA2jo > a.tspA2jp > ::after path:1,HTML,1,BODY,0,DIV,6,DIV,2,DIV,2,MAIN,6,DIV,0,DIV,1,SECTION,0,ARTICLE,0,DIV,1,DIV,0,DIV,0,A,0,::after selector:div.tspA2jq > div.tspA2jo > a.tspA2jp > ::after snippet:<::after> type:node] score:0.105309 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:1046 height:428 left:169 right:1167 top:618 width:998] lhId:page-0-IMG nodeLabel:Bundeskanzler Friedrich Merz (CDU) beim Jahresempfang des Bundesverbands deutsc… path:1,HTML,1,BODY,0,DIV,6,DIV,2,DIV,2,MAIN,6,DIV,0,DIV,1,SECTION,0,ARTICLE,0,DIV,0,FIGURE,0,DIV,0,PICTURE,2,IMG selector:figure.tspAQht > div.tspAQhu > picture > img.tspA3jw snippet:<img src="/images/15506283/alternates/BASE_21_9_W1000/1776777643000/jahresempfang-75…" alt="Bundeskanzler Friedrich Merz (CDU) beim Jahresempfang des Bundesverbands d…" width="1000" height="428" loading="lazy" class="tspA3jw"> type:node]] map[cause:Web font extra:map[type:url value:https://assets.tagesspiegel.de/fonts/franklingothic-book-basic.c62561d04e5eb023ca3e2fde512605c0.woff2]] map[cause:Web font extra:map[type:url value:https://assets.tagesspiegel.de/fonts/Abril_Text_Regular-basic.c371b6fb87298eb4990a97124a47e7e4.woff2]] map[cause:Web font extra:map[type:url value:https://assets.tagesspiegel.de/fonts/franklingothic-med-basic.4262342c15da29dbdffaff795d31ad13.woff2]] map[cause:Web font extra:map[type:url value:https://assets.tagesspiegel.de/fonts/Abril_Text_Bold-basic.ed72f8ea0597f63d7cc1a47ae7bb3acd.woff2]] map[cause:Web font extra:map[type:url value:https://assets.tagesspiegel.de/fonts/Abril_Text_BoldItalic-basic.1cd71e407d313b5db30f65b5a9bc639f.woff2]] map[cause:Web font extra:map[type:url value:https://assets.tagesspiegel.de/fonts/Abril_Text_Italic-basic.6c5932e5019579d6c76d1822e5aacc4d.woff2]]] type:subitems]] map[node:map[boundingRect:map[bottom:54 height:18 left:844 right:909 top:36 width:65] lhId:page-5-SEARCH nodeLabel: Suche suchen path:1,HTML,1,BODY,0,DIV,6,DIV,2,DIV,0,DIV,0,HEADER,0,DIV,0,DIV,1,DIV,0,SEARCH selector:div.tspOb0 > div.tspOb5 > div.tspOb6 > search.tspTeo snippet:<search role="search" class="tspTeo tspTes tspTeq tspOcc"> type:node] score:0.000177 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:3719 height:224 left:199 right:497 top:3495 width:298] lhId:page-9-IMG nodeLabel:Ein Mann versucht mit einem Bolzenschneider, ein Fahrradschloss aufzubrechen (g… path:1,HTML,1,BODY,0,DIV,6,DIV,2,DIV,2,MAIN,9,DIV,0,DIV,0,DIV,1,SECTION,2,DIV,0,ARTICLE,0,DIV,0,FIGURE,0,DIV,0,PICTURE,2,IMG selector:figure.tspAQht > div.tspAQhu > picture > img.tspA3jw snippet:<img src="/images/15505227/alternates/BASE_4_3_W300/1776766856000/weniger-fahrraddie…" alt="Ein Mann versucht mit einem Bolzenschneider, ein Fahrradschloss aufzubrech…" width="300" height="225" loading="lazy" class="tspA3jw"> type:node]]] type:subitems]]]
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:0.069009] map[node:map[boundingRect:map[bottom:885 height:831 left:231 right:1104 top:55 width:873] lhId:page-0-DIV nodeLabel:Weiter mit Werbung... Sie stimmen Datenverarbeitungen und Cookies für personal… path:1,HTML,1,BODY,0,DIV,1,DIV selector:body > div.message-container > div#notice snippet:<div id="notice" class="message type-modal" style="padding: 30px 30px 30px 33px; border-width: 0px;"> type:node] score:0.054747] map[node:map[boundingRect:map[bottom:940 height:120 left:169 right:1169 top:820 width:1000] lhId:page-7-DIV nodeLabel:Tagesspiegel Footer Bar path:1,HTML,1,BODY,0,DIV,6,DIV,2,DIV,3,DIV,0,DIV selector:div.tspIa3 > div#page-container > div#piano-footerbar > div.tp-container-inner snippet:<div class="tp-container-inner" style="height: 120px; width: 1000px;"> type:node] score:0.007075 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:97 height:59 left:44 right:154 top:38 width:110] lhId:page-2-IMG nodeLabel:div.banner-stage > div.banner-content > picture.ng-scope > img.main-image path:5,HTML,2,BODY,1,DIV,1,DIV,1,DIV,0,DIV,10,DIV,0,DIV,2,PICTURE,1,IMG selector:div.banner-stage > div.banner-content > picture.ng-scope > img.main-image snippet:<img class="main-image" src="https://assets.tagesspiegel.de/images/Spring26.50c5d67fa59d1b84452f19ceb26…" data-is-image-hanging="true"> type:node]] map[cause:Web font extra:map[type:url value:https://assets.tagesspiegel.de/fonts/Abril_Text_Bold-basic.ed72f8ea0597f63d7cc1a47ae7bb3acd.woff2]] map[cause:Web font extra:map[type:url value:https://assets.tagesspiegel.de/fonts/Abril_Text_Regular-basic.c371b6fb87298eb4990a97124a47e7e4.woff2]]] type:subitems]] map[node:map[boundingRect:map[bottom:601 height:133 left:264 right:1074 top:468 width:810] lhId:page-1-P nodeLabel:Für die Nutzung mit Werbung: Wir und unsere 268 Partner nutzen Cookies und vera… path:1,HTML,1,BODY,0,DIV,1,DIV,3,DIV,0,DIV,0,DIV,0,P selector:div.message-component > div.message-component > div.message-component > p.focusable snippet:<p tabindex="0" class="focusable message-component text no-children Text" style="padding: 0px; margin: 0px; font-size: 14px; font-weight: 400;"> type:node] score:0.006902 subItems:map[items:[map[cause:Web font extra:map[type:url value:https://assets.tagesspiegel.de/fonts/abril_text_bold-webfont-subset-basic-de.52c0d810a473c222fde74b1323c16eff.woff2]] map[cause:Web font extra:map[type:url value:https://assets.tagesspiegel.de/fonts/abril_text_regular-webfont-subset-basic-de.ccb628ca0988004cf76c77f935d95316.woff2]] map[cause:Web font extra:map[type:url value:https://assets.tagesspiegel.de/fonts/franklingothic-med-webfont-subset-basic-de.92d281f2ff95c3834682ac684cc6f71f.woff2]] map[cause:Web font extra:map[type:url value:https://assets.tagesspiegel.de/fonts/franklingothic-book-webfont-subset-basic-de.eee39720c7701db8ce51cb4436f4c594.woff2]]] type:subitems]] map[node:map[boundingRect:map[bottom:66 height:23 left:345 right:538 top:43 width:193] lhId:page-0-SPAN nodeLabel:2 Monate für statt 30 € jetzt 2 € path:5,HTML,2,BODY,1,DIV,1,DIV,1,DIV,0,DIV,10,DIV,0,DIV,5,DIV,1,H2,1,SPAN selector:div.banner-content > div.banner-text > h2.banner-headline > span.nowrap snippet:<span class="nowrap"> type:node] score:0.000285 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:97 height:59 left:44 right:154 top:38 width:110] lhId:page-2-IMG nodeLabel:div.banner-stage > div.banner-content > picture.ng-scope > img.main-image path:5,HTML,2,BODY,1,DIV,1,DIV,1,DIV,0,DIV,10,DIV,0,DIV,2,PICTURE,1,IMG selector:div.banner-stage > div.banner-content > picture.ng-scope > img.main-image snippet:<img class="main-image" src="https://assets.tagesspiegel.de/images/Spring26.50c5d67fa59d1b84452f19ceb26…" data-is-image-hanging="true"> type:node]] map[cause:Web font extra:map[type:url value:https://assets.tagesspiegel.de/fonts/Abril_Text_Bold-basic.ed72f8ea0597f63d7cc1a47ae7bb3acd.woff2]] map[cause:Web font extra:map[type:url value:https://assets.tagesspiegel.de/fonts/Abril_Text_Regular-basic.c371b6fb87298eb4990a97124a47e7e4.woff2]]] type:subitems]]]

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:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:88.009 source:map[column:138141 line:20 type:source-location url:https://www.tagesspiegel.de/assets/nda/js/app.b6b21b19.js urlProvider:network]]]
headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:74.899 source:map[type:text value:[unattributed]]] map[reflowTime:88.009 source:map[column:138173 line:19 type:source-location url:https://www.tagesspiegel.de/assets/nda/js/app.b6b21b19.js urlProvider:network]]]

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: Bundeskanzler Friedrich Merz (CDU) beim Jahresempfang des Bundesverbands deutsc…
path: 1,HTML,1,BODY,0,DIV,6,DIV,2,DIV,2,MAIN,6,DIV,0,DIV,1,SECTION,0,ARTICLE,0,DIV,0,FIGURE,0,DIV,0,PICTURE,2,IMG
selector: figure.tspAQht > div.tspAQhu > picture > img.tspA3jw
snippet: <img src="/images/15506283/alternates/BASE_21_9_W1000/1776777643000/jahresempfang-75…" alt="Bundeskanzler Friedrich Merz (CDU) beim Jahresempfang des Bundesverbands d…" width="1000" height="428" loading="lazy" class="tspA3jw">

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

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.

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
Die Esso-Tankstelle am Kronprinzessinenweg in Berlin-Nikolassee ist eine der te… div.tspA2jn > figure.tspAQht > div.tspAQhu > img.tspA3jw
/images/15506396/alternates/BASE_16_9_W768/1776778744000/...61.0 KiB26.1 KiB
div.banner-stage > div.banner-content > picture.ng-scope > img.main-image div.banner-stage > div.banner-content > picture.ng-scope > img.main-image
assets.tagesspiegel.de/images/Spring26.50c5d67fa59d1b84452f19ceb26f9b6a.webp19.8 KiB18.8 KiB
Die Fraktionsspitzen von CDU und SPD – hier Raed Saleh (links) und Dirk Stettne… div.tspA2jn > figure.tspAQht > div.tspAQhu > img.tspA3jw
/images/15507035/alternates/BASE_16_9_W768/1776791145000/...39.0 KiB13.8 KiB
Ein Mann versucht mit einem Bolzenschneider, ein Fahrradschloss aufzubrechen (g… figure.tspAQht > div.tspAQhu > picture > img.tspA3jw
/images/15505227/alternates/BASE_4_3_W300/1776766856000/w...18.1 KiB7.1 KiB

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

Diagnostics

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reasonFailure type
The page has an unload handler in a sub frame.Actionable

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: 0.0 ms 291.9 KiB
URLTransfer SizeEst Savings
www.googletagmanager.com/gtm.js?id=GTM-KL9B87VG178.3 KiB73.1 KiB
cdn.piano.io/api/tinypass.min.js132.1 KiB68.5 KiB
cmp-sp.tagesspiegel.de/Notice.8f529.js79.6 KiB53.4 KiB
/_sam/H4sIAAAAAAAA_z3IwQ6AIAgA0B9KmJ76m4bJHI6oBa7f7-bt7eE...43.6 KiB30.5 KiB
www.tagesspiegel.de/assets/nda/js/22.a1f387a5.js56.5 KiB23.3 KiB
cdn.privacy-mgmt.com/wrapperMessagingWithoutDetection.js53.2 KiB21.9 KiB
cdn.cxense.com/cx.js37.5 KiB21.2 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: 207 ms
URLTime Spent
tagesspiegel.de/207 ms
www.tagesspiegel.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.

ElementLayout shift score
div.tspA2jq > div.tspA2jo > a.tspA2jp > ::after div.tspA2jq > div.tspA2jo > a.tspA2jp > ::after
0.105
Weiter mit Werbung... Sie stimmen Datenverarbeitungen und Cookies für personal… body > div.message-container > div#notice
0.055
Tagesspiegel Footer Bar div.tspIa3 > div#page-container > div#piano-footerbar > div.tp-container-inner
0.007
Für die Nutzung mit Werbung: Wir und unsere 268 Partner nutzen Cookies und vera… div.message-component > div.message-component > div.message-component > p.focusable
0.007
2 Monate für statt 30 € jetzt 2 € div.banner-content > div.banner-text > h2.banner-headline > span.nowrap
0.000
Suche suchen div.tspOb0 > div.tspOb5 > div.tspOb6 > search.tspTeo
0.000
●Time to Interactive 2.0 s
●Max Potential First Input Delay 80 ms
●Optimize DOM size
●Font display
●LCP breakdown
●Modern HTTP
●Render blocking requests
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●Reduce unused CSS
●Avoids enormous network payloads Total size was 1,637 KiB
●User Timing marks and measures 1 user timing
●JavaScript execution time 0.8 s
●Minimizes main-thread work 2.0 s
●Avoid long main-thread tasks 4 long tasks found
●Avoid non-composited animations 1 animated element found
●Image elements have explicit `width` and `height`
●Network Requests
●Network Round Trip Times 130 ms
●Server Backend Latencies 440 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
95

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

When a button doesn't have an accessible name, screen readers announce it as "button", making it unusable for users who rely on screen readers. Learn how to make buttons more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.indicator-card > div.indicator-card-header > div.info-wrapper > button.info-button div.indicator-card > div.indicator-card-header > div.info-wrapper > button.info-button
div.indicator-card > div.indicator-card-header > div.info-wrapper > button.info-button div.indicator-card > div.indicator-card-header > div.info-wrapper > button.info-button
div.indicator-card > div.indicator-card-header > div.info-wrapper > button.info-button div.indicator-card > div.indicator-card-header > div.info-wrapper > button.info-button
div.indicator-card > div.indicator-card-header > div.info-wrapper > button.info-button div.indicator-card > div.indicator-card-header > div.info-wrapper > button.info-button

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
●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.
●ARIA attributes are used as specified for the element's role
●Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
●`[aria-hidden="true"]` elements do not contain focusable descendents
●Elements use only permitted ARIA attributes
●Background and foreground colors have a sufficient contrast ratio
●Document has a `<title>` element
●`<frame>` or `<iframe>` elements have a title
●`<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
●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
○`button`, `link`, and `menuitem` elements 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 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
○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.
○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.
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
Unload event listeners are deprecated and will be removed.
cdnjs.cloudflare.com/ajax/libs/jquery/1.12.4/jquery.min.js line 1, col 8625

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.tagesspiegel.de/assets/nda/js/app.b6b21b19.js
cdnjs.cloudflare.com/ajax/libs/angular.js/1.2.22/angular.min.jscdnjs.cloudflare.com/ajax/libs/angular.js/1.2.22/angular.min.js.map
cdnjs.cloudflare.com/ajax/libs/angular.js/1.2.22/angular-sanitize.min.jscdnjs.cloudflare.com/ajax/libs/angular.js/1.2.22/angular-sanitize.min.js.map
cdnjs.cloudflare.com/ajax/libs/angular.js/1.2.22/angular-cookies.min.jscdnjs.cloudflare.com/ajax/libs/angular.js/1.2.22/angular-cookies.min.js.map
cdnjs.cloudflare.com/ajax/libs/angular.js/1.2.22/angular-animate.min.jscdnjs.cloudflare.com/ajax/libs/angular.js/1.2.22/angular-animate.min.js.map
cdn.cxense.com/cx.cce.jscdn.cxense.com/cx.cce.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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