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thethao247.vn Desktop Performance
63/100
These metrics represent real-world Chrome users experience viewing thethao247.vn 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
First Contentful Paint
First Input Delay
Cumulative Layout Shift
Metrics
Speed Index13/100 3.8 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more.
Time to Interactive50/100 4.5 s
Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more.
Largest Contentful Paint56/100 2.2 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More
First Contentful Paint78/100 1.2 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more.
Total Blocking Time93/100 130 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more.
Cumulative Layout Shift100/100 0.037
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.
Reduce initial server response time
Root document took 1,940 ms
1,341 ms
Serve images in next-gen formats
Potential savings of 786 KiB
720 ms
Eliminate render-blocking resources
Potential savings of 690 ms
690 ms
Properly size images
Potential savings of 609 KiB
590 ms
Efficiently encode images
Potential savings of 568 KiB
590 ms
Remove unused JavaScript
Potential savings of 328 KiB
290 ms
Defer offscreen images
Potential savings of 132 KiB
70 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
Does not use passive listeners to improve scrolling performance
Avoid `document.write()`
Serve static assets with an efficient cache policy
68 resources found
Minimize main-thread work
3.9 s
Avoid an excessive DOM size
1,332 elements
Reduce JavaScript execution time
1.7 s
Avoid enormous network payloads
Total size was 2,813 KiB
Avoid large layout shifts
5 elements found
Largest Contentful Paint element
1 element found
Keep request counts low and transfer sizes small
235 requests • 2,813 KiB
Avoid long main-thread tasks
9 long tasks found
Avoid chaining critical requests
43 chains found
Passed Audits (9)
Minimize third-party usage
Third-party code blocked the main thread for 180 ms
Preload key requests
Minify CSS
Potential savings of 8 KiB
Minify JavaScript
Potential savings of 4 KiB
Enable text compression
Use video formats for animated content
Avoid multiple page redirects
Potential savings of 190 ms
Preconnect to required origins
Remove unused CSS
Potential savings of 23 KiB
thethao247.vn 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)
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.
Does not have a `<meta name="viewport">` tag with `width` or `initial-scale`
Passed Audits (9)
robots.txt is valid
Page isn’t blocked from indexing
Document has a meta description
Document has a valid `hreflang`
Page has successful HTTP status code
Document has a `<title>` element
Document avoids plugins
Document has a valid `rel=canonical`
Links have descriptive text
thethao247.vn Desktop Best Practices
62/100
These checks highlight opportunities to improve the overall code health of thethao247.vn 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 (5)
User Experience
Displays images with incorrect aspect ratio
Trust and Safety
Does not use HTTPS
1 insecure request found
Links to cross-origin destinations are unsafe
Includes front-end JavaScript libraries with known security vulnerabilities
2 vulnerabilities detected
General
Browser errors were logged to the console
Passed Audits (9)
Serves images with appropriate resolution
Avoids requesting the notification permission on page load
Detected JavaScript libraries
Allows users to paste into password fields
Page has the HTML doctype
Avoids requesting the geolocation permission on page load
Avoids deprecated APIs
Avoids Application Cache
Properly defines charset
thethao247.vn Desktop Progressive Web App
15/100
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 (10)
PWA Optimized
Does not set a theme color for the address bar.
Does not have a `<meta name="viewport">` tag with `width` or `initial-scale`
Manifest doesn't have a maskable icon
Is not configured for a custom splash screen
Installable
Does not use HTTPS
1 insecure request found
Does not register a service worker that controls page and `start_url`
Web app manifest does not meet the installability requirements
Fast and reliable
Current page does not respond with a 200 when offline
Page load is not fast enough on mobile networks
Interactive on simulated mobile network at 20.4 s
`start_url` does not respond with a 200 when offline
Passed Audits (3)
Redirects HTTP traffic to HTTPS
Provides a valid `apple-touch-icon`
Contains some content when JavaScript is not available
thethao247.vn Desktop Accessibility
50/100
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)
Best practices
These items highlight common accessibility best practices.
The document uses `<meta http-equiv="refresh">`
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
Buttons do not have an accessible name
`<frame>` or `<iframe>` elements do not have a title
Links do not have a discernible name
Tables and lists
These are opportunities to to improve the experience of reading tabular or list data using assistive technology, like a screen reader.
Lists do not contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
Contrast
These are opportunities to improve the legibility of your content.
Background and foreground colors do not have a sufficient contrast ratio.
Passed Audits (12)
No element has a `[tabindex]` value greater than 0
Heading elements appear in a sequentially-descending order
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
`<html>` element has a `[lang]` attribute
Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
Document has a `<title>` element
The page contains a heading, skip link, or landmark region
`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
`[aria-hidden="true"]` is not present on the document `<body>`
`[id]` attributes on active, focusable elements are unique
`<html>` element has a valid value for its `[lang]` attribute
`[aria-hidden="true"]` elements do not contain focusable descendents
Desktop Speed
50/100
These checks analyze the performance of thethao247.vn 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 (8)
Leverage browser caching
Enable compression
Optimize images
Minify JavaScript
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Reduce server response time
Minify CSS
Minify HTML
Passed Audits (2)
Avoid landing page redirects
Prioritize visible content
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