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24h.com.vn Desktop Performance
72/100
These metrics represent real-world Chrome users experience viewing 24h.com.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
First Contentful Paint
First Input Delay
Cumulative Layout Shift
Largest Contentful Paint
Metrics
Speed Index32/100 2.8 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more.
Time to Interactive45/100 4.8 s
Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more.
Largest Contentful Paint66/100 1.9 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More
First Contentful Paint93/100 0.9 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more.
Total Blocking Time98/100 90 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 0.005
Cumulative Layout Shift measures the movement of visible elements within the viewport. Learn more.
Should Fix (17)
Opportunities
These suggestions can help your page load faster. They don't directly affect the Performance score.
Remove unused JavaScript
Potential savings of 668 KiB
1,690 ms
Reduce initial server response time
Root document took 1,590 ms
986 ms
Eliminate render-blocking resources
Potential savings of 320 ms
317 ms
Serve images in next-gen formats
Potential savings of 214 KiB
140 ms
Enable text compression
Potential savings of 142 KiB
120 ms
Properly size images
Potential savings of 54 KiB
80 ms
Diagnostics
More information about the performance of your application. These numbers don't directly affect the Performance score.
Avoid `document.write()`
Avoid an excessive DOM size
1,949 elements
Serve static assets with an efficient cache policy
38 resources found
Minimize main-thread work
3.1 s
JavaScript execution time
1.1 s
User Timing marks and measures
6 user timings
Largest Contentful Paint element
1 element found
Avoid chaining critical requests
2 chains found
Keep request counts low and transfer sizes small
239 requests • 1,993 KiB
Avoid large layout shifts
5 elements found
Avoid long main-thread tasks
6 long tasks found
Passed Audits (13)
Defer offscreen images
Potential savings of 17 KiB
Minify CSS
Use video formats for animated content
Remove unused CSS
Potential savings of 55 KiB
Preconnect to required origins
Preload key requests
Minify JavaScript
Potential savings of 2 KiB
Avoid multiple page redirects
Potential savings of 190 ms
Avoids enormous network payloads
Total size was 1,993 KiB
Uses passive listeners to improve scrolling performance
Minimize third-party usage
Third-party code blocked the main thread for 0 ms
All text remains visible during webfont loads
Efficiently encode images
Potential savings of 120 KiB
24h.com.vn Desktop SEO
83/100
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 (10)
Document avoids plugins
Links have descriptive text
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Document has a `<title>` element
Page isn’t blocked from indexing
robots.txt is valid
Page has successful HTTP status code
Document has a meta description
Document has a valid `rel=canonical`
Document has a valid `hreflang`
24h.com.vn Desktop Best Practices
69/100
These checks highlight opportunities to improve the overall code health of 24h.com.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 (4)
Trust and Safety
Links to cross-origin destinations are unsafe
Includes front-end JavaScript libraries with known security vulnerabilities
4 vulnerabilities detected
Does not use HTTPS
1 insecure request found
General
Browser errors were logged to the console
Passed Audits (10)
Properly defines charset
Page has the HTML doctype
Avoids requesting the notification permission on page load
Avoids deprecated APIs
Detected JavaScript libraries
Avoids Application Cache
Avoids requesting the geolocation permission on page load
Displays images with correct aspect ratio
Allows users to paste into password fields
Serves images with appropriate resolution
24h.com.vn Desktop Progressive Web App
19/100
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 provide a valid `apple-touch-icon`
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.
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 20.2 s
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
Passed Audits (3)
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Redirects HTTP traffic to HTTPS
Contains some content when JavaScript is not available
24h.com.vn Desktop Accessibility
48/100
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.
Image elements do not have `[alt]` attributes
Links do not have a discernible name
Best practices
These items highlight common accessibility best practices.
The document uses `<meta http-equiv="refresh">`
`[user-scalable="no"]` is used in the `<meta name="viewport">` element or the `[maximum-scale]` attribute is less than 5.
Contrast
These are opportunities to improve the legibility of your content.
Background and foreground colors do not have a sufficient contrast ratio.
Passed Audits (9)
The page contains a heading, skip link, or landmark region
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
`<frame>` or `<iframe>` elements have a title
Document has a `<title>` element
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
`[aria-hidden="true"]` is not present on the document `<body>`
`<html>` element has a `[lang]` attribute
`<html>` element has a valid value for its `[lang]` attribute
Heading elements appear in a sequentially-descending order
Desktop Speed
69/100
These checks analyze the performance of 24h.com.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 (6)
Enable compression
Optimize images
Leverage browser caching
Prioritize visible content
Minify HTML
Minify JavaScript
Passed Audits (4)
Avoid landing page redirects
Reduce server response time
Minify CSS
Eliminate render-blocking JavaScript and CSS in above-the-fold content
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