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thesun.co.uk Desktop Performance
26/100
These metrics represent real-world Chrome users experience viewing thesun.co.uk 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
First Input Delay
Largest Contentful Paint
Cumulative Layout Shift
First Contentful Paint
Metrics
Time to Interactive7/100 9.1 s
Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more.
Speed Index15/100 3.6 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more.
Largest Contentful Paint29/100 3.2 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More
Total Blocking Time32/100 470 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more.
First Contentful Paint39/100 1.8 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more.
Cumulative Layout Shift41/100 0.294
Cumulative Layout Shift measures the movement of visible elements within the viewport. Learn more.
Should Fix (22)
Opportunities
These suggestions can help your page load faster. They don't directly affect the Performance score.
Remove unused CSS
Potential savings of 364 KiB
1,430 ms
Use video formats for animated content
Potential savings of 1,565 KiB
1,280 ms
Remove unused JavaScript
Potential savings of 956 KiB
1,220 ms
Eliminate render-blocking resources
Potential savings of 880 ms
881 ms
Avoid multiple page redirects
Potential savings of 340 ms
340 ms
Properly size images
Potential savings of 221 KiB
320 ms
Enable text compression
Potential savings of 102 KiB
140 ms
Diagnostics
More information about the performance of your application. These numbers don't directly affect the Performance score.
Avoid an excessive DOM size
5,203 elements
Avoid `document.write()`
Ensure text remains visible during webfont load
Does not use passive listeners to improve scrolling performance
Reduce the impact of third-party code
Third-party code blocked the main thread for 520 ms
Serve static assets with an efficient cache policy
113 resources found
Avoid enormous network payloads
Total size was 6,730 KiB
Minimize main-thread work
7.5 s
Reduce JavaScript execution time
3.5 s
Avoid long main-thread tasks
13 long tasks found
User Timing marks and measures
6 user timings
Keep request counts low and transfer sizes small
587 requests • 6,730 KiB
Avoid chaining critical requests
16 chains found
Avoid large layout shifts
5 elements found
Largest Contentful Paint element
1 element found
Passed Audits (8)
Minify CSS
Preload key requests
Serve images in next-gen formats
Potential savings of 17 KiB
Defer offscreen images
Potential savings of 110 KiB
Preconnect to required origins
Initial server response time was short
Root document took 100 ms
Minify JavaScript
Potential savings of 14 KiB
Efficiently encode images
thesun.co.uk Desktop SEO
75/100
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)
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
Links do not have descriptive text
1 link found
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Links are not crawlable
Passed Audits (9)
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Document avoids plugins
robots.txt is valid
Document has a `<title>` element
Document has a valid `hreflang`
Page has successful HTTP status code
Document has a meta description
Document has a valid `rel=canonical`
Page isn’t blocked from indexing
thesun.co.uk Desktop Best Practices
54/100
These checks highlight opportunities to improve the overall code health of thesun.co.uk 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 (6)
Trust and Safety
Includes front-end JavaScript libraries with known security vulnerabilities
4 vulnerabilities detected
Does not use HTTPS
1 insecure request found
Links to cross-origin destinations are unsafe
User Experience
Displays images with incorrect aspect ratio
General
Uses deprecated APIs
1 warning found
Browser errors were logged to the console
Passed Audits (8)
Allows users to paste into password fields
Detected JavaScript libraries
Avoids requesting the geolocation permission on page load
Page has the HTML doctype
Serves images with appropriate resolution
Avoids Application Cache
Properly defines charset
Avoids requesting the notification permission on page load
thesun.co.uk Desktop Progressive Web App
22/100
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)
PWA Optimized
Manifest doesn't have a maskable icon
Does not set a theme color for the address bar.
Is not configured for a custom splash screen
Fast and reliable
`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 42.8 s
Current page does not respond with a 200 when offline
Installable
Does not register a service worker that controls page and `start_url`
Does not use HTTPS
1 insecure request found
Web app manifest does not meet the installability requirements
Passed Audits (4)
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Redirects HTTP traffic to HTTPS
Contains some content when JavaScript is not available
Provides a valid `apple-touch-icon`
thesun.co.uk Desktop Accessibility
64/100
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 (6)
Contrast
These are opportunities to improve the legibility of your content.
Background and foreground colors do not have a sufficient contrast ratio.
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.
Image elements do not have `[alt]` attributes
Links do not have a discernible name
`<frame>` or `<iframe>` elements do not have a title
Form elements do not have associated labels
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 (14)
No element has a `[tabindex]` value greater than 0
`[id]` attributes on active, focusable elements are unique
`[aria-*]` attributes match their roles
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
Document has a `<title>` element
The page contains a heading, skip link, or landmark region
`[aria-hidden="true"]` is not present on the document `<body>`
Heading elements appear in a sequentially-descending order
`[aria-*]` attributes are valid and not misspelled
`[aria-hidden="true"]` elements do not contain focusable descendents
`<html>` element has a `[lang]` attribute
`<html>` element has a valid value for its `[lang]` attribute
`[aria-*]` attributes have valid values
Desktop Speed
74/100
These checks analyze the performance of thesun.co.uk 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)
Leverage browser caching
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Avoid landing page redirects
Minify JavaScript
Enable compression
Minify HTML
Passed Audits (4)
Reduce server response time
Minify CSS
Optimize images
Prioritize visible content
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