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.

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:0.254 source:map[column:142550 line:44 type:source-location url:https://www.auswaertiges-amt.de/resource/themes/aa/js/main-238-127.js urlProvider:network]] map[reflowTime:0.082 source:map[column:96238 line:6 type:source-location url:https://www.auswaertiges-amt.de/resource/themes/aa/js/main-238-127.js urlProvider:network]] map[reflowTime:0.134 source:map[column:98955 line:6 type:source-location url:https://www.auswaertiges-amt.de/resource/themes/aa/js/main-238-127.js urlProvider:network]] map[reflowTime:10.846 source:map[column:49408 line:32 type:source-location url:https://www.auswaertiges-amt.de/resource/themes/aa/js/main-238-127.js urlProvider:network]] map[reflowTime:0.627 source:map[column:50126 line:32 type:source-location url:https://www.auswaertiges-amt.de/resource/themes/aa/js/main-238-127.js urlProvider:network]] map[reflowTime:0.456 source:map[column:50184 line:32 type:source-location url:https://www.auswaertiges-amt.de/resource/themes/aa/js/main-238-127.js urlProvider:network]] map[reflowTime:0.392 source:map[column:50248 line:32 type:source-location url:https://www.auswaertiges-amt.de/resource/themes/aa/js/main-238-127.js urlProvider:network]] map[reflowTime:3.636 source:map[column:54210 line:32 type:source-location url:https://www.auswaertiges-amt.de/resource/themes/aa/js/main-238-127.js urlProvider:network]] map[reflowTime:12.673 source:map[column:49430 line:32 type:source-location url:https://www.auswaertiges-amt.de/resource/themes/aa/js/main-238-127.js urlProvider:network]] map[reflowTime:0.606 source:map[column:51184 line:32 type:source-location url:https://www.auswaertiges-amt.de/resource/themes/aa/js/main-238-127.js urlProvider:network]] map[reflowTime:0.584 source:map[column:83591 line:32 type:source-location url:https://www.auswaertiges-amt.de/resource/themes/aa/js/main-238-127.js urlProvider:network]] map[reflowTime:0.492 source:map[column:143525 line:6 type:source-location url:https://www.auswaertiges-amt.de/resource/themes/aa/js/main-238-127.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: Tagungsgebäude des Rats für Außenbeziehungen in Luxemburg

path: 3,HTML,2,BODY,1,DIV,3,DIV,0,DIV,0,MAIN,1,SECTION,1,DIV,0,DIV,0,DIV,0,DIV,0,A,1,DIV,0,PICTURE,1,IMG

selector: a.teaser__link > div.teaser__image-section > picture.c-picture--teaser-big > img.picture__image

snippet: <img class="picture__image " src="https://www.auswaertiges-amt.de/resource/image/2558408/123x55/1230/550/28e…" alt="Tagungsgebäude des Rats für Außenbeziehungen in Luxemburg" data-sizes="auto">

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

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.auswaertiges-amt.de/resource/themes/aa/css/icons-data-png-184-102.css	42.4 KiB	80 ms
www.auswaertiges-amt.de/resource/themes/aa/css/icons-data-svg-182-104.css	33.0 KiB
www.auswaertiges-amt.de/resource/themes/aa/css/icons-fallback-186-101.css	5.0 KiB
www.auswaertiges-amt.de/resource/themes/aa/css/styles-768-123.css	101.9 KiB	160 ms

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
piwik.auswaertiges-amt.de/matomo.js	0.0 ms	102.8 KiB

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
Außenminister Johann Wadephul `div.teaser__linklist-section > div.teaser__image-section > picture.c-picture--federal-minister > img.picture__image`	/resource/image/2464308/1x1/469/469/ee33ef879c14b195f1987...	299.2 KiB	263.4 KiB
Aussteller im Weltsaal `a.teaser__link > div.teaser__image-section > picture.c-picture--teaser-news > img.picture__image`	/resource/image/1334548/16x9/450/253/718880495a60d90fa2b1...	33.0 KiB	24.0 KiB
Weltkarte `div.c-countries-infos--default > div.countries-infos__picture-wrapper > picture.c-picture--background > img.picture__image`	/resource/image/2490/16x9/944/531/6870daa9155fbb1eab41ed1...	102.5 KiB	20.9 KiB
Festakt anlässlich des 75. Jahrestags der Unterzeichnung des Nordatlantikvertra… `div.image-teasergroup__image-section > a.rte__anchor > picture.c-picture--default > img.picture__image`	/resource/image/2666212/123x55/1230/550/db1fceaa96c0b080e...	126.4 KiB	16.3 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: 140 ms 154.0 KiB

URL	Transfer Size	Est Savings
www.auswaertiges-amt.de/resource/themes/aa/css/styles-768-123.css	101.6 KiB	93.0 KiB
www.auswaertiges-amt.de/resource/themes/aa/css/icons-data-png-184-102.css	42.1 KiB	33.8 KiB
www.auswaertiges-amt.de/resource/themes/aa/css/icons-data-svg-182-104.css	32.7 KiB	27.2 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: 0.0 ms 187.3 KiB

URL	Transfer Size	Est Savings
www.auswaertiges-amt.de/resource/themes/aa/js/main-238-127.js	274.6 KiB	121.6 KiB
piwik.auswaertiges-amt.de/matomo.js	102.4 KiB	65.6 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
Tagungsgebäude des Rats für Außenbeziehungen in Luxemburg `a.teaser__link > div.teaser__image-section > picture.c-picture--teaser-big > img.picture__image`	/resource/image/2558408/123x55/1230/550/28e627424a7088d2f...
Außenminister Wadephul beim Besuch eines durch russische Luftangriffe beschädig… `div.image-teasergroup__image-section > a.rte__anchor > picture.c-picture--default > img.picture__image`	/resource/image/2727852/123x55/1230/550/588c901efd219a5b9...
Logo der deutschen Kandidatur für den UN-Sicherheitsrat 2027 - 2028 `div.image-teasergroup__image-section > a.rte__anchor > picture.c-picture--default > img.picture__image`	/resource/image/2684676/123x55/1230/550/538dbc2f96e320307...
Festakt anlässlich des 75. Jahrestags der Unterzeichnung des Nordatlantikvertra… `div.image-teasergroup__image-section > a.rte__anchor > picture.c-picture--default > img.picture__image`	/resource/image/2666212/123x55/1230/550/db1fceaa96c0b080e...
Außenminister Johann Wadephul und Kaja Kallas, Hohe Vertreterin der Europäische… `div.image-teasergroup__image-section > a.rte__anchor > picture.c-picture--default > img.picture__image`	/resource/image/2717926/123x55/1230/550/cf5b604c61a7885dd...
Außenminister Johann Wadephul `div.teaser__linklist-section > div.teaser__image-section > picture.c-picture--federal-minister > img.picture__image`	/resource/image/2464308/1x1/469/469/ee33ef879c14b195f1987...
Krisenstab der Bundesregierung `a.teaser__link > div.teaser__image-section > picture.c-picture--teaser-news > img.picture__image`	/resource/image/2758516/16x9/450/253/24acfaf854d5d62c4f17...
Aussteller im Weltsaal `a.teaser__link > div.teaser__image-section > picture.c-picture--teaser-news > img.picture__image`	/resource/image/1334548/16x9/450/253/718880495a60d90fa2b1...
Festivals of Lights an der Fassade des Auswärtigen Amts `a.teaser__link > div.teaser__image-section > picture.c-picture--teaser > img.picture__image`	/resource/image/2542446/16x9/450/253/4766549ba0a0d729b348...
Wegweiser im Auswärtigen Amt `a.teaser__link > div.teaser__image-section > picture.c-picture--teaser > img.picture__image`	/resource/image/2542192/16x9/450/253/eec4b2414e4435d66491...

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: 806 ms

URL	Time Spent
auswaertiges-amt.de/	806 ms
www.auswaertiges-amt.de/	0.0 ms

●Time to Interactive 2.1 s

●Max Potential First Input Delay 100 ms

●Layout shift culprits

●Optimize DOM size

●Font display

●LCP breakdown

●Modern HTTP

●Optimize viewport for mobile

●Minify CSS

●Minify JavaScript

●Avoids enormous network payloads Total size was 2,104 KiB

●JavaScript execution time 0.2 s

●Minimizes main-thread work 0.5 s

●Avoid long main-thread tasks 1 long task found

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 220 ms

●Server Backend Latencies 200 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 410 ms

○INP breakdown

○User Timing marks and measures

○Avoid non-composited animations

○Avoid large layout shifts

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
Ukraine Deutschlands Kandidatur für den UN-Sicherheitsrat Sicherheitspolitik Eu… `div.c-slider--tabbed > div.slider__pagination-container > div.slider__pagination-wrapper > ol#tablist-295874`

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
Ukraine `div.slider__pagination-wrapper > ol#tablist-295874 > li.slider__pagination-list-item > button.slider__pagination-button`
Deutschlands Kandidatur für den UN-Sicherheitsrat `div.slider__pagination-wrapper > ol#tablist-295874 > li.slider__pagination-list-item > button.slider__pagination-button`
Sicherheitspolitik `div.slider__pagination-wrapper > ol#tablist-295874 > li.slider__pagination-list-item > button.slider__pagination-button`
Europa `div.slider__pagination-wrapper > ol#tablist-295874 > li.slider__pagination-list-item > button.slider__pagination-button`

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.

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
Ukraine `div.slider__pagination-container > div.slider__pagination-wrapper > ol#tablist-295874 > li.slider__pagination-list-item`
Deutschlands Kandidatur für den UN-Sicherheitsrat `div.slider__pagination-container > div.slider__pagination-wrapper > ol#tablist-295874 > li.slider__pagination-list-item`
Sicherheitspolitik `div.slider__pagination-container > div.slider__pagination-wrapper > ol#tablist-295874 > li.slider__pagination-list-item`
Europa `div.slider__pagination-container > div.slider__pagination-wrapper > ol#tablist-295874 > li.slider__pagination-list-item`

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

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
21.04.2026 Artikel EU-Außenrat in Luxemburg: Ukraine, Nahost und Sudan im Fokus… `div.u-grid-row > div.u-grid-col > div.c-teaser--startPage > a.teaser__link`

○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.

●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

●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>`).

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

●Touch targets have sufficient size and spacing.

●`[lang]` attributes have a valid value

●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

○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

○`<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.

○`<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.

100

Best Practices

General

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.auswaertiges-amt.de/resource/themes/aa/js/main-238-127.js

●Uses HTTPS

●Avoids deprecated APIs

●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

●Detected JavaScript libraries

○Redirects HTTP traffic to HTTPS

○Mitigate clickjacking with XFO or CSP

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Uncrawlable Link
body > div > a.c-top-link--default `body > div > a.c-top-link--default`

To appear in search results, crawlers need access to your app.

○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

●robots.txt is valid

●Image elements have `[alt]` attributes

●Document has a valid `hreflang`

●Document has a valid `rel=canonical`