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check24.de Mobile Performance
58/100
These metrics represent real-world Chrome users experience viewing check24.de on mobile devices. Reports are focused on loading performance and other critical factors that most affect user experience. Follow our guide to track, optimize, and improve the quality of your web pages.
User Loading Experience
Largest Contentful Paint
First Contentful Paint
First Input Delay
Cumulative Layout Shift
Metrics
Total Blocking Time37/100 730 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more.
Largest Contentful Paint53/100 3.9 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More
Speed Index58/100 5.3 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more.
Cumulative Layout Shift69/100 0.177
Cumulative Layout Shift measures the movement of visible elements within the viewport. Learn more.
Time to Interactive77/100 5.0 s
Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more.
First Contentful Paint79/100 2.8 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more.
Should Fix (15)
Opportunities
These suggestions can help your page load faster. They don't directly affect the Performance score.
Avoid multiple page redirects
Potential savings of 1,410 ms
1,410 ms
Reduce initial server response time
Root document took 1,130 ms
528 ms
Remove unused JavaScript
Potential savings of 26 KiB
150 ms
Serve images in next-gen formats
Potential savings of 9 KiB
150 ms
Diagnostics
More information about the performance of your application. These numbers don't directly affect the Performance score.
Ensure text remains visible during webfont load
Avoid `document.write()`
Avoid an excessive DOM size
2,687 elements
Minimize main-thread work
4.7 s
Serve static assets with an efficient cache policy
68 resources found
JavaScript execution time
1.1 s
Largest Contentful Paint element
1 element found
Avoid long main-thread tasks
18 long tasks found
Avoid large layout shifts
3 elements found
Avoid chaining critical requests
1 chain found
Keep request counts low and transfer sizes small
80 requests • 1,211 KiB
Passed Audits (14)
Preconnect to required origins
Efficiently encode images
Enable text compression
Defer offscreen images
Minify JavaScript
Minify CSS
Preload key requests
Use video formats for animated content
Avoids enormous network payloads
Total size was 1,211 KiB
Minimize third-party usage
Third-party code blocked the main thread for 10 ms
Eliminate render-blocking resources
Remove unused CSS
Potential savings of 25 KiB
Uses passive listeners to improve scrolling performance
Properly size images
check24.de Mobile SEO
84/100
These checks ensure that your page is optimized for search engine results ranking. There are additional factors Lighthouse does not check that may affect your search ranking. Learn more. Run these additional validators on your site to check additional SEO best practices.
Should Fix (3)
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Links are not crawlable
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Image elements do not have `[alt]` attributes
Mobile Friendly
Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. Learn more.
Tap targets are not sized appropriately
88% appropriately sized tap targets
Passed Audits (11)
Document has a `<title>` element
Document has a meta description
robots.txt is valid
Document has a valid `rel=canonical`
Links have descriptive text
Page has successful HTTP status code
Document uses legible font sizes
96.34% legible text
Document has a valid `hreflang`
Page isn’t blocked from indexing
Document avoids plugins
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
check24.de Mobile Best Practices
77/100
These checks highlight opportunities to improve the overall code health of check24.de mobile page. Current recommendations will help to make your page fast and secure, to create a good user experience and to avoid deprecated technologies.
Should Fix (3)
Trust and Safety
Does not use HTTPS
1 insecure request found
Includes front-end JavaScript libraries with known security vulnerabilities
3 vulnerabilities detected
Links to cross-origin destinations are unsafe
Passed Audits (11)
Detected JavaScript libraries
Serves images with appropriate resolution
Page has the HTML doctype
No browser errors logged to the console
Avoids requesting the geolocation permission on page load
Properly defines charset
Allows users to paste into password fields
Avoids deprecated APIs
Displays images with correct aspect ratio
Avoids requesting the notification permission on page load
Avoids Application Cache
check24.de Mobile Progressive Web App
50/100
These checks validate the aspects of a Progressive Web App. Learn more. These checks are required by the baseline PWA Checklist but are not automatically checked by Lighthouse. They do not affect your score but it's important that you verify them manually.
Should Fix (8)
Installable
Does not use HTTPS
1 insecure request found
Web app manifest does not meet the installability requirements
Does not register a service worker that controls page and `start_url`
Fast and reliable
`start_url` does not respond with a 200 when offline
Current page does not respond with a 200 when offline
PWA Optimized
Manifest doesn't have a maskable icon
Is not configured for a custom splash screen
Does not set a theme color for the address bar.
Passed Audits (6)
Contains some content when JavaScript is not available
Page load is fast enough on mobile networks
Provides a valid `apple-touch-icon`
Content is sized correctly for the viewport
Redirects HTTP traffic to HTTPS
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
check24.de Mobile Accessibility
58/100
These checks highlight opportunities to improve the accessibility of your web app. Only a subset of accessibility issues can be automatically detected so manual testing is also encouraged. These items address areas which an automated testing tool cannot cover. Learn more in our guide on conducting an accessibility review.
Should Fix (5)
Names and labels
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.
Form elements do not have associated labels
`<frame>` or `<iframe>` elements do not have a title
Links do not have a discernible name
Image elements do not have `[alt]` attributes
Best practices
These items highlight common accessibility best practices.
`[user-scalable="no"]` is used in the `<meta name="viewport">` element or the `[maximum-scale]` attribute is less than 5.
Passed Audits (12)
`[aria-hidden="true"]` is not present on the document `<body>`
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
Document has a `<title>` element
Background and foreground colors have a sufficient contrast ratio
`<html>` element has a valid value for its `[lang]` attribute
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
Heading elements appear in a sequentially-descending order
No element has a `[tabindex]` value greater than 0
ARIA IDs are unique
`<html>` element has a `[lang]` attribute
The page contains a heading, skip link, or landmark region
`[id]` attributes on active, focusable elements are unique
Mobile Usability
99/100
These checks validate how easily a visitor can use check24.de on a mobile device. Test results include a list of any mobile usability problems. Mobile usability problems are issues that can affect a user that visits the page on a mobile (small screen) device, including small font sizes (which are hard to read on a small screen).
Should Fix (1)
Size tap targets appropriately
Passed Audits (4)
Avoid plugins
Configure the viewport
Size content to viewport
Use legible font sizes
Mobile Speed
63/100
These checks analyze the performance of check24.de on mobile devices and return PageSpeed score and information on how to improve the load time. What makes a good Progressive Web App?
Should Fix (2)
Avoid landing page redirects
Optimize images
Passed Audits (8)
Enable compression
Leverage browser caching
Reduce server response time
Minify CSS
Minify HTML
Minify JavaScript
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Prioritize visible content
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