Wikimedia.org Wikimedia
Wikimedia is a global movement whose mission is to bring free educational content to the world.
wikimedia.org Mobile Performance
93/100
These metrics represent real-world Chrome users experience viewing wikimedia.org 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
First Contentful Paint
First Input Delay
Cumulative Layout Shift
Metrics
First Contentful Paint83/100 2.7 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more.
Largest Contentful Paint86/100 2.7 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More
Speed Index93/100 3.2 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more.
Time to Interactive98/100 2.7 s
Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more.
Cumulative Layout Shift100/100 0
Cumulative Layout Shift measures the movement of visible elements within the viewport. Learn more.
Total Blocking Time100/100 0 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more.
Should Fix (7)
Opportunities
These suggestions can help your page load faster. They don't directly affect the Performance score.
Avoid multiple page redirects
Potential savings of 1,110 ms
1,110 ms
Serve images in next-gen formats
Potential savings of 119 KiB
750 ms
Eliminate render-blocking resources
Potential savings of 720 ms
717 ms
Diagnostics
More information about the performance of your application. These numbers don't directly affect the Performance score.
Serve static assets with an efficient cache policy
6 resources found
Largest Contentful Paint element
1 element found
Avoid chaining critical requests
1 chain found
Keep request counts low and transfer sizes small
23 requests • 281 KiB
Passed Audits (19)
Minify JavaScript
Defer offscreen images
Initial server response time was short
Root document took 390 ms
Use video formats for animated content
Uses passive listeners to improve scrolling performance
Minify CSS
Remove unused JavaScript
Efficiently encode images
All text remains visible during webfont loads
Remove unused CSS
Preconnect to required origins
Enable text compression
Avoids `document.write()`
Avoids enormous network payloads
Total size was 281 KiB
Preload key requests
Minimizes main-thread work
0.3 s
Avoids an excessive DOM size
80 elements
JavaScript execution time
0.0 s
Properly size images
wikimedia.org Mobile 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)
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.
Document doesn't use legible font sizes
Tap targets are not sized appropriately
Does not have a `<meta name="viewport">` tag with `width` or `initial-scale`
Passed Audits (9)
Image elements have `[alt]` attributes
Links have descriptive text
Page isn’t blocked from indexing
Links are crawlable
Document has a `<title>` element
Document has a meta description
Page has successful HTTP status code
Document avoids plugins
Document has a valid `hreflang`
wikimedia.org Mobile Best Practices
85/100
These checks highlight opportunities to improve the overall code health of wikimedia.org 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 (2)
Trust and Safety
Does not use HTTPS
1 insecure request found
User Experience
Serves images with low resolution
Passed Audits (12)
No browser errors logged to the console
Links to cross-origin destinations are safe
Displays images with correct aspect ratio
Detected JavaScript libraries
Page has the HTML doctype
Avoids front-end JavaScript libraries with known security vulnerabilities
Properly defines charset
Avoids requesting the notification permission on page load
Avoids Application Cache
Avoids requesting the geolocation permission on page load
Allows users to paste into password fields
Avoids deprecated APIs
wikimedia.org Mobile Progressive Web App
0/100
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 (12)
PWA Optimized
Content is not sized correctly for the viewport
Does not set a theme color for the address bar.
Manifest doesn't have a maskable icon
Is not configured for a custom splash screen
Does not have a `<meta name="viewport">` tag with `width` or `initial-scale`
Contains some content when JavaScript is not available
Redirects HTTP traffic to HTTPS
Fast and reliable
Current page does not respond with a 200 when offline
`start_url` does not respond with a 200 when offline
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 (2)
Provides a valid `apple-touch-icon`
Page load is fast enough on mobile networks
wikimedia.org Mobile Accessibility
93/100
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 (1)
Navigation
These are opportunities to improve keyboard navigation in your application.
The page does not contain a heading, skip link, or landmark region
Passed Audits (9)
Background and foreground colors have a sufficient contrast ratio
Links have a discernible name
Image elements have `[alt]` attributes
`<html>` element has a valid value for its `[lang]` attribute
`[aria-hidden="true"]` is not present on the document `<body>`
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
Document has a `<title>` element
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
`<html>` element has a `[lang]` attribute
Mobile Usability
67/100
These checks validate how easily a visitor can use wikimedia.org 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 (3)
Use legible font sizes
Configure the viewport
Size tap targets appropriately
Passed Audits (2)
Avoid plugins
Size content to viewport
Mobile Speed
59/100
These checks analyze the performance of wikimedia.org 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)
Avoid landing page redirects
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Leverage browser caching
Optimize images
Passed Audits (6)
Enable compression
Reduce server response time
Minify CSS
Minify HTML
Minify JavaScript
Prioritize visible content
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