Apache.org Welcome to The Apache Software Foundation!
Home page of The Apache Software Foundation
apache.org Desktop Performance
90/100
These metrics represent real-world Chrome users experience viewing apache.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 Contentful Paint
First Input Delay
Cumulative Layout Shift
Largest Contentful Paint
Metrics
Cumulative Layout Shift38/100 0.309
Cumulative Layout Shift measures the movement of visible elements within the viewport. Learn more.
Largest Contentful Paint83/100 1.4 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More
Speed Index92/100 1.2 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more.
Time to Interactive95/100 2.0 s
Time to interactive is the amount of time it takes for the page to become fully interactive. 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.
First Contentful Paint100/100 0.5 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more.
Should Fix (15)
Opportunities
These suggestions can help your page load faster. They don't directly affect the Performance score.
Remove unused JavaScript
Potential savings of 456 KiB
600 ms
Serve images in next-gen formats
Potential savings of 375 KiB
490 ms
Efficiently encode images
Potential savings of 202 KiB
360 ms
Remove unused CSS
Potential savings of 62 KiB
120 ms
Properly size images
Potential savings of 65 KiB
80 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
Does not use passive listeners to improve scrolling performance
Serve static assets with an efficient cache policy
19 resources found
Avoid an excessive DOM size
1,239 elements
Avoid large layout shifts
5 elements found
Avoid chaining critical requests
9 chains found
Avoid long main-thread tasks
3 long tasks found
Largest Contentful Paint element
1 element found
User Timing marks and measures
3 user timings
Keep request counts low and transfer sizes small
42 requests • 1,414 KiB
Passed Audits (15)
Enable text compression
Preload key requests
Use video formats for animated content
Defer offscreen images
Avoids enormous network payloads
Total size was 1,414 KiB
Minify JavaScript
Potential savings of 4 KiB
Initial server response time was short
Root document took 260 ms
JavaScript execution time
0.5 s
Preconnect to required origins
Avoid multiple page redirects
Avoids `document.write()`
Minimizes main-thread work
1.0 s
Eliminate render-blocking resources
Potential savings of 40 ms
Minimize third-party usage
Third-party code blocked the main thread for 190 ms
Minify CSS
Potential savings of 3 KiB
apache.org Desktop SEO
100/100
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.
Passed Audits (11)
Image elements have `[alt]` attributes
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Document has a meta description
robots.txt is valid
Page isn’t blocked from indexing
Links have descriptive text
Page has successful HTTP status code
Document avoids plugins
Document has a valid `hreflang`
Document has a `<title>` element
Links are crawlable
apache.org Desktop Best Practices
77/100
These checks highlight opportunities to improve the overall code health of apache.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 (3)
General
Browser errors were logged to the console
Trust and Safety
Does not use HTTPS
23 insecure requests found
Includes front-end JavaScript libraries with known security vulnerabilities
4 vulnerabilities detected
Passed Audits (11)
Avoids Application Cache
Links to cross-origin destinations are safe
Avoids requesting the geolocation permission on page load
Serves images with appropriate resolution
Properly defines charset
Avoids deprecated APIs
Allows users to paste into password fields
Displays images with correct aspect ratio
Detected JavaScript libraries
Page has the HTML doctype
Avoids requesting the notification permission on page load
apache.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 set a theme color for the address bar.
Is not configured for a custom splash screen
Manifest doesn't have a maskable icon
Does not redirect HTTP traffic to HTTPS
Installable
Does not use HTTPS
23 insecure requests found
Does not register a service worker that controls page and `start_url`
Web app manifest does not meet the installability requirements
Fast and reliable
`start_url` does not respond with a 200 when offline
Current page does not respond with a 200 when offline
Passed Audits (4)
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Contains some content when JavaScript is not available
Page load is fast enough on mobile networks
Provides a valid `apple-touch-icon`
apache.org Desktop Accessibility
81/100
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.
`<frame>` or `<iframe>` elements do not have a title
ARIA
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Elements with an ARIA `[role]` that require children to contain a specific `[role]` are missing some or all of those required children.
Navigation
These are opportunities to improve keyboard navigation in your application.
Heading elements are not in a sequentially-descending order
Tables and lists
These are opportunities to to improve the experience of reading tabular or list data using assistive technology, like a screen reader.
List items (`<li>`) are not contained within `<ul>` or `<ol>` parent elements.
Contrast
These are opportunities to improve the legibility of your content.
Background and foreground colors do not have a sufficient contrast ratio.
Passed Audits (14)
Image elements have `[alt]` attributes
Links have a discernible name
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
`<html>` element has a valid value for its `[lang]` attribute
`[aria-hidden="true"]` elements do not contain focusable descendents
The page contains a heading, skip link, or landmark region
`[aria-hidden="true"]` is not present on the document `<body>`
`[role]` values are valid
Buttons have an accessible name
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
`[role]`s are contained by their required parent element
Document has a `<title>` element
`[role]`s have all required `[aria-*]` attributes
`<html>` element has a `[lang]` attribute
Desktop Speed
84/100
These checks analyze the performance of apache.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 (6)
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Leverage browser caching
Prioritize visible content
Optimize images
Minify CSS
Minify JavaScript
Passed Audits (4)
Avoid landing page redirects
Enable compression
Reduce server response time
Minify HTML
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