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heise.de Desktop Performance
51/100
These metrics represent real-world Chrome users experience viewing heise.de web page. 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
Cumulative Layout Shift
First Contentful Paint
First Input Delay
Metrics
Speed Index9/100 4.1 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more.
Total Blocking Time20/100 610 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more.
Time to Interactive49/100 4.6 s
Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more.
Largest Contentful Paint74/100 1.7 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More
First Contentful Paint92/100 0.9 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more.
Cumulative Layout Shift100/100 0.025
Cumulative Layout Shift measures the movement of visible elements within the viewport. Learn more.
Should Fix (20)
Opportunities
These suggestions can help your page load faster. They don't directly affect the Performance score.
Remove unused JavaScript
Potential savings of 347 KiB
1,140 ms
Serve images in next-gen formats
Potential savings of 396 KiB
720 ms
Efficiently encode images
Potential savings of 223 KiB
310 ms
Reduce initial server response time
Root document took 890 ms
286 ms
Eliminate render-blocking resources
Potential savings of 190 ms
185 ms
Remove unused CSS
Potential savings of 76 KiB
80 ms
Diagnostics
More information about the performance of your application. These numbers don't directly affect the Performance score.
Does not use passive listeners to improve scrolling performance
Avoid `document.write()`
Ensure text remains visible during webfont load
Avoid an excessive DOM size
3,391 elements
Serve static assets with an efficient cache policy
75 resources found
Minimize main-thread work
6.5 s
Reduce JavaScript execution time
3.6 s
Avoids enormous network payloads
Total size was 2,648 KiB
Avoid long main-thread tasks
16 long tasks found
Keep request counts low and transfer sizes small
236 requests • 2,648 KiB
Largest Contentful Paint element
1 element found
User Timing marks and measures
43 user timings
Avoid large layout shifts
5 elements found
Avoid chaining critical requests
2 chains found
Passed Audits (10)
Preconnect to required origins
Minify JavaScript
Potential savings of 5 KiB
Minimize third-party usage
Third-party code blocked the main thread for 50 ms
Minify CSS
Preload key requests
Use video formats for animated content
Defer offscreen images
Potential savings of 151 KiB
Avoid multiple page redirects
Potential savings of 190 ms
Enable text compression
Properly size images
Potential savings of 3 KiB
heise.de Desktop SEO
82/100
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 (2)
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
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Links are not crawlable
Passed Audits (9)
Links have descriptive text
robots.txt is valid
Document has a `<title>` element
Document avoids plugins
Page has successful HTTP status code
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Document has a meta description
Document has a valid `hreflang`
Page isn’t blocked from indexing
heise.de Desktop Best Practices
77/100
These checks highlight opportunities to improve the overall code health of heise.de 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)
General
Browser errors were logged to the console
Trust and Safety
Does not use HTTPS
1 insecure request found
Links to cross-origin destinations are unsafe
Passed Audits (11)
Avoids deprecated APIs
Avoids Application Cache
Detected JavaScript libraries
Allows users to paste into password fields
Page has the HTML doctype
Avoids front-end JavaScript libraries with known security vulnerabilities
Serves images with appropriate resolution
Avoids requesting the geolocation permission on page load
Properly defines charset
Displays images with correct aspect ratio
Avoids requesting the notification permission on page load
heise.de Desktop Progressive Web App
26/100
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)
Fast and reliable
Current page does not respond with a 200 when offline
`start_url` does not respond with a 200 when offline
Page load is not fast enough on mobile networks
Interactive on simulated mobile network at 24.1 s
Installable
Web app manifest does not meet the installability requirements
Does not use HTTPS
1 insecure request found
Does not register a service worker that controls page and `start_url`
PWA Optimized
Is not configured for a custom splash screen
Manifest doesn't have a maskable icon
Passed Audits (5)
Provides a valid `apple-touch-icon`
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Sets a theme color for the address bar.
Redirects HTTP traffic to HTTPS
Contains some content when JavaScript is not available
heise.de Desktop Accessibility
71/100
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 (7)
ARIA
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.
`[aria-*]` attributes are not valid or misspelled
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
Buttons do not have an accessible name
Image elements do not have `[alt]` attributes
Links do not have a discernible name
Contrast
These are opportunities to improve the legibility of your content.
Background and foreground colors do not have a sufficient contrast ratio.
Navigation
These are opportunities to improve keyboard navigation in your application.
Heading elements are not in a sequentially-descending order
Passed Audits (18)
`[role]` values are valid
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
`<frame>` or `<iframe>` elements have a title
The page contains a heading, skip link, or landmark region
`[id]` attributes on active, focusable elements are unique
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
No element has a `[tabindex]` value greater than 0
`[role]`s have all required `[aria-*]` attributes
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
`[aria-hidden="true"]` is not present on the document `<body>`
Document has a `<title>` element
`[aria-*]` attributes have valid values
`[aria-*]` attributes match their roles
`<html>` element has a valid value for its `[lang]` attribute
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
`<html>` element has a `[lang]` attribute
ARIA IDs are unique
Desktop Speed
59/100
These checks analyze the performance of heise.de on desktop devices and return PageSpeed score and information on how to improve the load time. What makes a good Progressive Web App?
Should Fix (6)
Optimize images
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Leverage browser caching
Enable compression
Minify JavaScript
Minify CSS
Passed Audits (4)
Avoid landing page redirects
Reduce server response time
Minify HTML
Prioritize visible content
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