Lighthouse Mobile

· 0 checks — Mobile 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.

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
translate-cdn.eye-able.com/eye-able-translate.js	259200.0 s	418.8 KiB
cloud.ccm19.de/app.js?apiKey=b0d87f14718336d7e766981ccbd1e6d1a0ec9ddfdd41013f	900.0 s	28.5 KiB
cdn.eye-able.com/public/js/eyeAble.js	604800.0 s	144.6 KiB
static.elfsight.com/platform/platform.js	3600.0 s	14.7 KiB
cdn.eye-able.com/public/css/eyeAble.1.17.17.min.css	604800.0 s	13.6 KiB
cdn.eye-able.com/configs/www.donaubad.de.js	600.0 s	1.3 KiB
www.donaubad.de/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.js	172793.0 s	987 B
cdn.eye-able.com/public/images/eye-able_whitelabel-icon_2.svg	604800.0 s	2.5 KiB
translate-cdn.eye-able.com/configs/donaubad_de_translate.js	259200.0 s	940 B
cdn.eye-able.com/public/images/eye-able-active-check.svg	604800.0 s	1.7 KiB
cdn.eye-able.com/public/images/eye-able-black-white.svg	604800.0 s	1.5 KiB

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:0.269465] map[node:map[boundingRect:map[bottom:928 height:284 left:0 right:412 top:645 width:412] lhId:page-5-DIV nodeLabel:Die vielseitige Erlebniswelt der Donaubad Freizeitanlagen in Neu-Ulm: Tauchen S… path:1,HTML,1,BODY,4,MAIN,0,SECTION,2,DIV selector:body.body > main.page-main > section > div.basic-text-brick snippet:<div class="basic-text-brick"> type:node] score:0.269465]]

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:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]

items: [map[reflowTime:24.383 source:map[column:33 line:44 type:source-location url:https://cloud.ccm19.de/app.js?apiKey=b0d87f14718336d7e766981ccbd1e6d1a0ec9ddfdd41013f 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:32.168 source:map[type:text value:[unattributed]]] map[reflowTime:25.534 source:map[column:20794 line:15 type:source-location url:https://www.donaubad.de/build/400.56e391c9.js urlProvider:network]] map[reflowTime:9.067 source:map[column:71966 line:1 type:source-location url:https://www.donaubad.de/build/856.5cf42e06.js urlProvider:network]] map[reflowTime:0.313 source:map[column:792 line:59 type:source-location url:https://cloud.ccm19.de/app.js?apiKey=b0d87f14718336d7e766981ccbd1e6d1a0ec9ddfdd41013f urlProvider:network]] map[reflowTime:24.07 source:map[column:959 line:81 type:source-location url:https://cloud.ccm19.de/app.js?apiKey=b0d87f14718336d7e766981ccbd1e6d1a0ec9ddfdd41013f urlProvider:network]]]

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
Luftaufnahme der gesamten Donaubad Anlage `div.hero-banner-media-container > div.hero-banner-media > picture > img`	/Gesamtanlage/1427/image-thumb__1427__hero_banner_image/D...	102.1 KiB	83.4 KiB
Familie im Wasser eines Freibades `div.c-card > div.c-card-image-picture > picture > img`	/Freibad/Attraktionen/1338/image-thumb__1338__card_image_...	123.9 KiB	63.8 KiB
Eishockey Team auf Inliner im Sommer `div.c-card > div.c-card-image-picture > picture > img`	/Inlinesporthalle/Angebote/216/image-thumb__216__card_ima...	119.0 KiB	58.9 KiB
Lächelndes Pärchen mit Schlittschuhen an der Eissportanlage `div.c-card > div.c-card-image-picture > picture > img`	/Eissportanlage/Eishalle/1045/image-thumb__1045__card_ima...	107.6 KiB	47.5 KiB
Junges Paar entspannt sich in der Münterblick-Sauna `div.c-card > div.c-card-image-picture > picture > img`	/Sauna/Menschenbilder 2/364/image-thumb__364__card_image_...	70.4 KiB	10.2 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.

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

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.donaubad.de/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.js	987 B
www.donaubad.de/build/856.0253065e.css	50.7 KiB	600 ms

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: 764 ms

URL	Time Spent
www.donaubad.de/	764 ms
www.donaubad.de/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.

Element	Layout shift score
Die vielseitige Erlebniswelt der Donaubad Freizeitanlagen in Neu-Ulm: Tauchen S… `body.body > main.page-main > section > div.basic-text-brick`	0.269

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

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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: 350 ms 55.6 KiB

URL	Transfer Size	Est Savings
www.donaubad.de/build/856.0253065e.css	50.3 KiB	44.9 KiB
cdn.eye-able.com/public/css/eyeAble.1.17.17.min.css	12.9 KiB	10.7 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: 1.4 s 253.7 KiB

URL	Transfer Size	Est Savings
cdn.eye-able.com/public/js/eyeAble.js	143.9 KiB	102.2 KiB
www.donaubad.de/build/73.fe332c54.js	96.8 KiB	92.9 KiB
www.donaubad.de/build/400.56e391c9.js	95.3 KiB	58.5 KiB

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work

Why this matters

Performance issues directly impact user engagement and conversion rates.

Category	Time Spent
Style & Layout	780 ms
Script Evaluation	696 ms
Other	286 ms
Script Parsing & Compilation	233 ms
Parse HTML & CSS	207 ms
Rendering	58 ms

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

●Optimize DOM size

●Font display

●LCP breakdown

●LCP request discovery

●Modern HTTP

●Optimize viewport for mobile

●Minify CSS

●Minify JavaScript

●Avoids enormous network payloads Total size was 1,678 KiB

●JavaScript execution time 0.8 s

●Avoid long main-thread tasks 8 long tasks found

●Image elements have explicit `width` and `height`

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 30 ms

●Server Backend Latencies 30 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 120 ms

○INP breakdown

○User Timing marks and measures

○Avoid non-composited animations

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
ERLEBNISBAD `div.uk-width-1-2@s > div.c-card > div.c-card-image-body > h4.uk-margin-medium-bottom`
Tauchen Sie ein in ein unvergleichliches Badevergnügen im größten Erlebnisbad d… `div.uk-width-1-2@s > div.c-card > div.c-card-image-body > p`
Erlebnisbad entdecken `div.uk-width-1-2@s > div.c-card > div.c-card-image-button > a.uk-button`
ERLEBNISBAD `div.uk-grid > div.c-opening-hours-banner-item > div.c-opening-hours-tile > h3.c-opening-hours-tile-title`
Mai - September `div.uk-grid > div.c-opening-hours-banner-item > div.c-opening-hours-tile > p.c-opening-hours-tile-opening-hours-name`
Mehr Öffnungszeiten `div.uk-inline-grid > div.uk-margin-top > a.c-link > p.c-link-title`
SAUNA `div.uk-grid > div.c-opening-hours-banner-item > div.c-opening-hours-tile > h3.c-opening-hours-tile-title`
Mai - September `div.uk-grid > div.c-opening-hours-banner-item > div.c-opening-hours-tile > p.c-opening-hours-tile-opening-hours-name`
Mehr Öffnungszeiten `div.uk-inline-grid > div.uk-margin-top > a.c-link > p.c-link-title`
FREIBAD `div.uk-grid > div.c-opening-hours-banner-item > div.c-opening-hours-tile > h3.c-opening-hours-tile-title`
Mai - September `div.uk-grid > div.c-opening-hours-banner-item > div.c-opening-hours-tile > p.c-opening-hours-tile-opening-hours-name`
Mehr Informationen (Infos zum Vorverkauf Dauerkarten) `div.uk-inline-grid > div.uk-margin-top > a.c-link > p.c-link-title`
EISSPORTANLAGE `div.uk-grid > div.c-opening-hours-banner-item > div.c-opening-hours-tile > h3.c-opening-hours-tile-title`
Oktober - März `div.uk-grid > div.c-opening-hours-banner-item > div.c-opening-hours-tile > p.c-opening-hours-tile-opening-hours-name`
Mehr Informationen `div.uk-inline-grid > div.uk-margin-top > a.c-link > p.c-link-title`
INLINE- & EVENTHALLE `div.uk-grid > div.c-opening-hours-banner-item > div.c-opening-hours-tile > h3.c-opening-hours-tile-title`
Hüpfburgenpark vom 04.04 bis 10.05 `div.uk-grid > div.c-opening-hours-banner-item > div.c-opening-hours-tile > p.c-opening-hours-tile-opening-hours-name`
Zur Laufschule, Miete Inlinehalle, Hüpfburgenpark alle Öffnungszeiten... `div.uk-inline-grid > div.uk-margin-top > a.c-link > p.c-link-title`
Mehr Informationen `div.uk-inline-grid > div.uk-margin-top > a.c-link > p.c-link-title`
Inline- & Eventhalle (1) `div.c-carousel-filters > ul > li > a.c-carousel-filter`
Sauna (3) `div.c-carousel-filters > ul > li > a.c-carousel-filter`
Erlebnisbad (1) `div.c-carousel-filters > ul > li > a.c-carousel-filter`
10.05.2026 `a.uk-width-1-2@s > div.c-card > div.card-event-offer-detail-container > div.c-card-event-offer-detail`
Erlebnisbad (5) `div.c-carousel-filters > ul > li > a.c-carousel-filter`
Sauna (5) `div.c-carousel-filters > ul > li > a.c-carousel-filter`
Inline- & Eventhalle (1) `div.c-carousel-filters > ul > li > a.c-carousel-filter`
Erlebnisbad `div.c-offer-card-content > div.c-offer-card-body > div.c-offer-card-areas > div.c-offer-card-area`
Zum Kindergeburtstag `div.c-offer-card-body > div.c-offer-card-link > a.c-link > p.c-link-title`
Sauna `div.c-offer-card-content > div.c-offer-card-body > div.c-offer-card-areas > div.c-offer-card-area`
Zur Massage `div.c-offer-card-body > div.c-offer-card-link > a.c-link > p.c-link-title`
Sauna `div.c-offer-card-content > div.c-offer-card-body > div.c-offer-card-areas > div.c-offer-card-area`
Zu den Dampfbad-Anwendungen `div.c-offer-card-body > div.c-offer-card-link > a.c-link > p.c-link-title`
Erlebnisbad `div.c-offer-card-content > div.c-offer-card-body > div.c-offer-card-areas > div.c-offer-card-area`
Zur Schwimmschule `div.c-offer-card-body > div.c-offer-card-link > a.c-link > p.c-link-title`
Erlebnisbad `div.c-offer-card-content > div.c-offer-card-body > div.c-offer-card-areas > div.c-offer-card-area`
Zur Aqua-Fitness `div.c-offer-card-body > div.c-offer-card-link > a.c-link > p.c-link-title`
Erlebnisbad `div.c-offer-card-content > div.c-offer-card-body > div.c-offer-card-areas > div.c-offer-card-area`
Zum Wasserparcour `div.c-offer-card-body > div.c-offer-card-link > a.c-link > p.c-link-title`
05.05.2026, Freibad `div.uk-width-1-2@m > div.c-news-card > a.c-news-card-body-link > div.c-news-card-leader`
Mehr lesen `div.c-news-card > div.c-news-card-link > a.c-link > p.c-link-title`

These are opportunities to improve the legibility of your content.

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
ERLEBNISBAD `div.uk-width-1-2@s > div.c-card > div.c-card-image-body > h4.uk-margin-medium-bottom`
Hüpfburgenpark `div.c-card > div.c-card-event-offer-picture > div.c-card-event-offer-body > h4.c-card-event-offer-headline`
Das Donaubad startet am 9. Mai in die Freibadsaison 2026 `div.c-news-card > a.c-news-card-body-link > div.c-news-card-headline > h4`

These are opportunities to improve keyboard navigation in your application.

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.uk-width-1-2@m > div.c-news-card > div.c-news-card-link > a.c-news-card-body-link `div.uk-width-1-2@m > div.c-news-card > div.c-news-card-link > a.c-news-card-body-link`

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.

Screen readers have features to make navigating tables easier. Ensuring that `<td>` elements in a large table (3 or more cells in width and height) have an associated table header may improve the experience for screen reader users. Learn more about table headers.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Tage Mai / August / September Juni / Juli Montag 12:00 - 20:00 Uhr 12.00 - 21.… `a.c-news-card-body-link > div.c-news-card-excerpt > div.c-clamp-text > table`
Erwachsen Ermäßigt Kind Familie Klein Familie Groß Eintrittskarte 5,50 € (bi… `a.c-news-card-body-link > div.c-news-card-excerpt > div.c-clamp-text > table`

○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.

●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

●Document has a `<title>` element

●`<html>` element has a `[lang]` attribute

●`<html>` element has a valid value for its `[lang]` attribute

●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.

●Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.

●`[lang]` attributes have a valid value

●Document has a main landmark.

●Deprecated ARIA roles were not used

●All heading elements contain content.

●Uses ARIA roles only on compatible elements

●Elements with visible text labels have matching accessible names.

●Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.

○`[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

○`<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.

○Skip links are focusable.

○`<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>`.

○Image elements do not have `[alt]` attributes that are redundant text.

○Identical links have the same purpose.

100

Best Practices

●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

●Ensure proper origin isolation with COOP

●Mitigate clickjacking with XFO or CSP

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

○Use a strong HSTS policy

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`