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24h.com.vn Mobile Performance
6/100
These metrics represent real-world Chrome users experience viewing 24h.com.vn 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
Largest Contentful Paint
Cumulative Layout Shift
First Contentful Paint
First Input Delay
Metrics
Largest Contentful Paint0/100 13.3 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More
Time to Interactive3/100 18.8 s
Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more.
Total Blocking Time4/100 1,670 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more.
Speed Index4/100 12.3 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more.
First Contentful Paint20/100 5.7 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more.
Cumulative Layout Shift24/100 0.415
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 JavaScript
Potential savings of 476 KiB
3,450 ms
Defer offscreen images
Potential savings of 251 KiB
1,350 ms
Eliminate render-blocking resources
Potential savings of 1,250 ms
1,250 ms
Reduce initial server response time
Root document took 1,520 ms
915 ms
Serve images in next-gen formats
Potential savings of 147 KiB
730 ms
Properly size images
Potential savings of 53 KiB
450 ms
Efficiently encode images
Potential savings of 23 KiB
180 ms
Enable text compression
Potential savings of 4 KiB
150 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
Reduce the impact of third-party code
Third-party code blocked the main thread for 1,050 ms
Does not use passive listeners to improve scrolling performance
Avoid `document.write()`
Minimize main-thread work
9.8 s
Avoid an excessive DOM size
1,963 elements
Reduce JavaScript execution time
5.4 s
Serve static assets with an efficient cache policy
41 resources found
Keep request counts low and transfer sizes small
220 requests • 1,859 KiB
Avoid chaining critical requests
2 chains found
User Timing marks and measures
14 user timings
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 (8)
Minify JavaScript
Minify CSS
Preconnect to required origins
Use video formats for animated content
Avoids enormous network payloads
Total size was 1,859 KiB
Preload key requests
Remove unused CSS
Potential savings of 54 KiB
Avoid multiple page redirects
Potential savings of 630 ms
24h.com.vn 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)
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.
Tap targets are not sized appropriately
82% appropriately sized tap targets
Passed Audits (12)
Document has a meta description
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Document uses legible font sizes
99.35% legible text
Document has a valid `hreflang`
robots.txt is valid
Document avoids plugins
Document has a valid `rel=canonical`
Page has successful HTTP status code
Links have descriptive text
Document has a `<title>` element
Links are crawlable
Page isn’t blocked from indexing
24h.com.vn Mobile Best Practices
62/100
These checks highlight opportunities to improve the overall code health of 24h.com.vn 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 (5)
Trust and Safety
Includes front-end JavaScript libraries with known security vulnerabilities
4 vulnerabilities detected
Links to cross-origin destinations are unsafe
Does not use HTTPS
1 insecure request found
User Experience
Serves images with low resolution
General
Browser errors were logged to the console
Passed Audits (9)
Avoids requesting the geolocation permission on page load
Avoids requesting the notification permission on page load
Displays images with correct aspect ratio
Detected JavaScript libraries
Properly defines charset
Avoids deprecated APIs
Allows users to paste into password fields
Page has the HTML doctype
Avoids Application Cache
24h.com.vn 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
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
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
Fast and reliable
`start_url` does not respond with a 200 when offline
Page load is not fast enough on mobile networks
Interactive at 18.8 s
Current page does not respond with a 200 when offline
Passed Audits (5)
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Content is sized correctly for the viewport
Redirects HTTP traffic to HTTPS
Contains some content when JavaScript is not available
Provides a valid `apple-touch-icon`
24h.com.vn Mobile Accessibility
51/100
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)
Navigation
These are opportunities to improve keyboard navigation in your application.
Heading elements are not in a sequentially-descending order
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.
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.
The document uses `<meta http-equiv="refresh">`
Passed Audits (11)
The page contains a heading, skip link, or landmark region
`[aria-hidden="true"]` is not present on the document `<body>`
`<frame>` or `<iframe>` elements have a title
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
`<html>` element has a `[lang]` attribute
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
`<html>` element has a valid value for its `[lang]` attribute
Document has a `<title>` element
`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
`[id]` attributes on active, focusable elements are unique
Mobile Usability
96/100
These checks validate how easily a visitor can use 24h.com.vn 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 (2)
Size content to viewport
Size tap targets appropriately
Passed Audits (3)
Avoid plugins
Configure the viewport
Use legible font sizes
Mobile Speed
85/100
These checks analyze the performance of 24h.com.vn 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 (4)
Prioritize visible content
Optimize images
Leverage browser caching
Enable compression
Passed Audits (6)
Avoid landing page redirects
Reduce server response time
Minify CSS
Minify HTML
Minify JavaScript
Eliminate render-blocking JavaScript and CSS in above-the-fold content
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