Wikimedia.org Wikimedia
Wikimedia is a global movement whose mission is to bring free educational content to the world.
wikimedia.org Desktop Performance
98/100
These metrics represent real-world Chrome users experience viewing wikimedia.org 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 Input Delay
First Contentful Paint
Cumulative Layout Shift
Largest Contentful Paint
Metrics
First Contentful Paint95/100 0.8 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more.
Largest Contentful Paint97/100 0.8 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More
Speed Index99/100 0.9 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more.
Cumulative Layout Shift100/100 0
Cumulative Layout Shift measures the movement of visible elements within the viewport. Learn more.
Time to Interactive100/100 0.8 s
Time to interactive is the amount of time it takes for the page to become fully interactive. 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 (8)
Opportunities
These suggestions can help your page load faster. They don't directly affect the Performance score.
Avoid multiple page redirects
Potential savings of 340 ms
340 ms
Eliminate render-blocking resources
Potential savings of 200 ms
202 ms
Serve images in next-gen formats
Potential savings of 74 KiB
120 ms
Properly size images
Potential savings of 16 KiB
80 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
4 resources found
Avoid chaining critical requests
1 chain found
Largest Contentful Paint element
1 element found
Keep request counts low and transfer sizes small
22 requests • 195 KiB
Passed Audits (18)
Preconnect to required origins
Remove unused JavaScript
Uses passive listeners to improve scrolling performance
Avoids `document.write()`
Minimizes main-thread work
0.1 s
Enable text compression
Preload key requests
Avoids an excessive DOM size
80 elements
Efficiently encode images
Remove unused CSS
Defer offscreen images
Minify CSS
All text remains visible during webfont loads
Minify JavaScript
Avoids enormous network payloads
Total size was 195 KiB
Use video formats for animated content
Initial server response time was short
Root document took 130 ms
JavaScript execution time
0.0 s
wikimedia.org Desktop SEO
90/100
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 (1)
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)
Document has a valid `hreflang`
Page has successful HTTP status code
Page isn’t blocked from indexing
Links have descriptive text
Document avoids plugins
Document has a meta description
Links are crawlable
Document has a `<title>` element
Image elements have `[alt]` attributes
wikimedia.org Desktop Best Practices
92/100
These checks highlight opportunities to improve the overall code health of wikimedia.org 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 (1)
Trust and Safety
Does not use HTTPS
1 insecure request found
Passed Audits (13)
Page has the HTML doctype
Links to cross-origin destinations are safe
No browser errors logged to the console
Avoids Application Cache
Detected JavaScript libraries
Avoids deprecated APIs
Allows users to paste into password fields
Properly defines charset
Avoids requesting the geolocation permission on page load
Serves images with appropriate resolution
Avoids front-end JavaScript libraries with known security vulnerabilities
Avoids requesting the notification permission on page load
Displays images with correct aspect ratio
wikimedia.org Desktop Progressive Web App
41/100
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)
PWA Optimized
Does not have a `<meta name="viewport">` tag with `width` or `initial-scale`
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
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`
Does not use HTTPS
1 insecure request found
Web app manifest does not meet the installability requirements
Passed Audits (4)
Page load is fast enough on mobile networks
Contains some content when JavaScript is not available
Redirects HTTP traffic to HTTPS
Provides a valid `apple-touch-icon`
wikimedia.org Desktop 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)
Links have a discernible name
`<html>` element has a valid value for its `[lang]` attribute
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
`<html>` element has a `[lang]` attribute
`[aria-hidden="true"]` is not present on the document `<body>`
Background and foreground colors have a sufficient contrast ratio
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
Document has a `<title>` element
Image elements have `[alt]` attributes
Desktop Speed
82/100
These checks analyze the performance of wikimedia.org 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 (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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