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n-tv.de Mobile Performance
20/100
These metrics represent real-world Chrome users experience viewing n-tv.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
First Input Delay
First Contentful Paint
Cumulative Layout Shift
Largest Contentful Paint
Metrics
Largest Contentful Paint0/100 13.5 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More
Total Blocking Time0/100 3,950 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more.
Time to Interactive6/100 15.9 s
Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more.
Speed Index10/100 10.0 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more.
First Contentful Paint84/100 2.6 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more.
Cumulative Layout Shift100/100 0.039
Cumulative Layout Shift measures the movement of visible elements within the viewport. Learn more.
Should Fix (15)
Opportunities
These suggestions can help your page load faster. They don't directly affect the Performance score.
Remove unused JavaScript
Potential savings of 149 KiB
1,620 ms
Defer offscreen images
Potential savings of 192 KiB
1,170 ms
Serve images in next-gen formats
Potential savings of 29 KiB
300 ms
Remove unused CSS
Potential savings of 23 KiB
120 ms
Diagnostics
More information about the performance of your application. These numbers don't directly affect the Performance score.
Avoid an excessive DOM size
5,785 elements
Reduce the impact of third-party code
Third-party code blocked the main thread for 570 ms
Minimize main-thread work
15.9 s
Does not use passive listeners to improve scrolling performance
Reduce JavaScript execution time
9.9 s
Serve static assets with an efficient cache policy
75 resources found
Keep request counts low and transfer sizes small
159 requests • 1,137 KiB
Avoid chaining critical requests
4 chains found
Avoid long main-thread tasks
20 long tasks found
Avoid large layout shifts
5 elements found
Largest Contentful Paint element
1 element found
Passed Audits (14)
All text remains visible during webfont loads
Minify CSS
Avoids enormous network payloads
Total size was 1,137 KiB
Enable text compression
Potential savings of 27 KiB
Avoid multiple page redirects
Potential savings of 630 ms
Eliminate render-blocking resources
Potential savings of 0 ms
Minify JavaScript
Potential savings of 4 KiB
Properly size images
Potential savings of 4 KiB
Preconnect to required origins
Preload key requests
Initial server response time was short
Root document took 270 ms
Avoids `document.write()`
Use video formats for animated content
Efficiently encode images
Potential savings of 12 KiB
n-tv.de Mobile SEO
91/100
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)
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
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
Passed Audits (12)
robots.txt is valid
Document has a `<title>` element
Links have descriptive text
Document has a meta description
Document has a valid `rel=canonical`
Page has successful HTTP status code
Document avoids plugins
Document has a valid `hreflang`
Document uses legible font sizes
85.52% legible text
Links are crawlable
Page isn’t blocked from indexing
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
n-tv.de Mobile Best Practices
69/100
These checks highlight opportunities to improve the overall code health of n-tv.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 (4)
Trust and Safety
Includes front-end JavaScript libraries with known security vulnerabilities
2 vulnerabilities detected
Links to cross-origin destinations are unsafe
Does not use HTTPS
1 insecure request found
User Experience
Serves images with low resolution
Passed Audits (10)
Avoids requesting the geolocation permission on page load
Page has the HTML doctype
Avoids requesting the notification permission on page load
Avoids Application Cache
Avoids deprecated APIs
Detected JavaScript libraries
Allows users to paste into password fields
No browser errors logged to the console
Properly defines charset
Displays images with correct aspect ratio
n-tv.de Mobile Progressive Web App
25/100
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 (9)
Installable
Does not register a service worker that controls page and `start_url`
Web app manifest does not meet the installability requirements
Does not use HTTPS
1 insecure request found
Fast and reliable
`start_url` does not respond with a 200 when offline
Current page does not respond with a 200 when offline
Page load is not fast enough on mobile networks
Interactive at 15.9 s
PWA Optimized
Does not set a theme color for the address bar.
Is not configured for a custom splash screen
Manifest doesn't have a maskable icon
Passed Audits (5)
Content is sized correctly for the viewport
Provides a valid `apple-touch-icon`
Redirects HTTP traffic to HTTPS
Contains some content when JavaScript is not available
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
n-tv.de Mobile Accessibility
90/100
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 (3)
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.
Links do not have a discernible name
Image elements do not have `[alt]` attributes
Contrast
These are opportunities to improve the legibility of your content.
Background and foreground colors do not have a sufficient contrast ratio.
Passed Audits (22)
`[role]` values are valid
Document has a `<title>` element
Buttons have an accessible name
ARIA IDs are unique
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
`<html>` element has a valid value for its `[lang]` attribute
`[aria-hidden="true"]` elements do not contain focusable descendents
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
`[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 valid and not misspelled
`[role]`s have all required `[aria-*]` attributes
No element has a `[tabindex]` value greater than 0
`<html>` element has a `[lang]` attribute
Heading elements appear in a sequentially-descending order
`[aria-*]` attributes have valid values
The page contains a heading, skip link, or landmark region
`[aria-hidden="true"]` is not present on the document `<body>`
`[aria-*]` attributes match their roles
`[role]`s are contained by their required parent element
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
`[id]` attributes on active, focusable elements are unique
`<frame>` or `<iframe>` elements have a title
Mobile Usability
98/100
These checks validate how easily a visitor can use n-tv.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
53/100
These checks analyze the performance of n-tv.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 (7)
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Avoid landing page redirects
Leverage browser caching
Prioritize visible content
Optimize images
Enable compression
Minify JavaScript
Passed Audits (3)
Reduce server response time
Minify CSS
Minify HTML
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