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reverso.net Mobile Performance
25/100
These metrics represent real-world Chrome users experience viewing reverso.net 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
Largest Contentful Paint
Cumulative Layout Shift
First Contentful Paint
Metrics
Speed Index18/100 8.5 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more.
Largest Contentful Paint19/100 5.5 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More
Time to Interactive22/100 10.9 s
Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more.
Total Blocking Time29/100 830 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more.
First Contentful Paint31/100 4.9 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more.
Cumulative Layout Shift51/100 0.247
Cumulative Layout Shift measures the movement of visible elements within the viewport. Learn more.
Should Fix (16)
Opportunities
These suggestions can help your page load faster. They don't directly affect the Performance score.
Avoid multiple page redirects
Potential savings of 1,890 ms
1,890 ms
Remove unused JavaScript
Potential savings of 241 KiB
1,080 ms
Eliminate render-blocking resources
Potential savings of 1,040 ms
1,039 ms
Serve images in next-gen formats
Potential savings of 9 KiB
150 ms
Diagnostics
More information about the performance of your application. These numbers don't directly affect the Performance score.
Avoid `document.write()`
Reduce the impact of third-party code
Third-party code blocked the main thread for 910 ms
Ensure text remains visible during webfont load
Minimize main-thread work
5.2 s
Serve static assets with an efficient cache policy
6 resources found
Reduce JavaScript execution time
3.3 s
Avoid large layout shifts
2 elements found
Keep request counts low and transfer sizes small
57 requests • 822 KiB
User Timing marks and measures
8 user timings
Avoid chaining critical requests
14 chains found
Largest Contentful Paint element
1 element found
Avoid long main-thread tasks
20 long tasks found
Passed Audits (14)
Uses passive listeners to improve scrolling performance
Properly size images
Minify CSS
Defer offscreen images
Use video formats for animated content
Preconnect to required origins
Efficiently encode images
Minify JavaScript
Enable text compression
Avoids enormous network payloads
Total size was 822 KiB
Avoids an excessive DOM size
162 elements
Preload key requests
Remove unused CSS
Initial server response time was short
Root document took 570 ms
reverso.net Mobile SEO
76/100
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 (4)
Crawling and Indexing
To appear in search results, crawlers need access to your app.
robots.txt is not valid
130 errors found
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
77% appropriately sized tap targets
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Document does not have a meta description
Image elements do not have `[alt]` attributes
Passed Audits (10)
Links are crawlable
Document uses legible font sizes
94.05% legible text
Document has a valid `rel=canonical`
Document has a valid `hreflang`
Links have descriptive text
Document avoids plugins
Document has a `<title>` element
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Page isn’t blocked from indexing
Page has successful HTTP status code
reverso.net Mobile Best Practices
69/100
These checks highlight opportunities to improve the overall code health of reverso.net 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
Links to cross-origin destinations are unsafe
Includes front-end JavaScript libraries with known security vulnerabilities
5 vulnerabilities detected
Does not use HTTPS
1 insecure request found
General
Browser errors were logged to the console
Passed Audits (10)
Avoids requesting the geolocation permission on page load
Page has the HTML doctype
Avoids Application Cache
Detected JavaScript libraries
Allows users to paste into password fields
Avoids requesting the notification permission on page load
Serves images with appropriate resolution
Avoids deprecated APIs
Displays images with correct aspect ratio
Properly defines charset
reverso.net Mobile Progressive Web App
21/100
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)
Fast and reliable
Page load is not fast enough on mobile networks
Interactive at 10.9 s
`start_url` does not respond with a 200 when offline
Current page does not respond with a 200 when offline
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.
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 (4)
Contains some content when JavaScript is not available
Content is sized correctly for the viewport
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Redirects HTTP traffic to HTTPS
reverso.net Mobile Accessibility
62/100
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)
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
`<html>` element does not have a `[lang]` attribute
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.
Form elements do not have associated labels
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 (9)
The page contains a heading, skip link, or landmark region
`[aria-hidden="true"]` is not present on the document `<body>`
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
Document has a `<title>` element
`[id]` attributes on active, focusable elements are unique
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
`<frame>` or `<iframe>` elements have a title
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
ARIA IDs are unique
Mobile Usability
97/100
These checks validate how easily a visitor can use reverso.net 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
71/100
These checks analyze the performance of reverso.net 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 (6)
Avoid landing page redirects
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Leverage browser caching
Enable compression
Minify HTML
Optimize images
Passed Audits (4)
Reduce server response time
Minify CSS
Minify JavaScript
Prioritize visible content
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