Elinux.org eLinux.org
elinux.org Mobile Performance
81/100
These metrics represent real-world Chrome users experience viewing elinux.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
Cumulative Layout Shift
Largest Contentful Paint
First Contentful Paint
First Input Delay
Metrics
Time to Interactive31/100 9.4 s
Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more.
Speed Index48/100 5.9 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more.
Largest Contentful Paint96/100 2.1 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More
First Contentful Paint98/100 1.7 s
First Contentful Paint marks the time at which the first text or image is painted. 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 70 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more.
Should Fix (13)
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
Enable text compression
Potential savings of 185 KiB
750 ms
Remove unused JavaScript
Potential savings of 96 KiB
450 ms
Serve images in next-gen formats
Potential savings of 194 KiB
150 ms
Eliminate render-blocking resources
Potential savings of 130 ms
132 ms
Diagnostics
More information about the performance of your application. These numbers don't directly affect the Performance score.
Avoid `document.write()`
Serve static assets with an efficient cache policy
71 resources found
Avoid long main-thread tasks
5 long tasks found
Largest Contentful Paint element
1 element found
User Timing marks and measures
2 user timings
Avoid chaining critical requests
2 chains found
Keep request counts low and transfer sizes small
75 requests • 679 KiB
Avoid large layout shifts
2 elements found
Passed Audits (16)
Use video formats for animated content
JavaScript execution time
0.4 s
Initial server response time was short
Root document took 360 ms
Avoids an excessive DOM size
592 elements
Preconnect to required origins
Properly size images
Minify CSS
All text remains visible during webfont loads
Efficiently encode images
Potential savings of 4 KiB
Uses passive listeners to improve scrolling performance
Avoids enormous network payloads
Total size was 679 KiB
Remove unused CSS
Preload key requests
Defer offscreen images
Minimizes main-thread work
1.4 s
Minify JavaScript
elinux.org Mobile SEO
58/100
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 (5)
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
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Links are not crawlable
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`
Document doesn't use legible font sizes
Tap targets are not sized appropriately
Passed Audits (7)
Links have descriptive text
Page isn’t blocked from indexing
Image elements have `[alt]` attributes
Page has successful HTTP status code
Document has a valid `hreflang`
Document avoids plugins
Document has a `<title>` element
elinux.org Mobile Best Practices
77/100
These checks highlight opportunities to improve the overall code health of elinux.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 (3)
Trust and Safety
Does not use HTTPS
1 insecure request found
Includes front-end JavaScript libraries with known security vulnerabilities
3 vulnerabilities detected
User Experience
Serves images with low resolution
Passed Audits (11)
Avoids requesting the geolocation permission on page load
Links to cross-origin destinations are safe
No browser errors logged to the console
Properly defines charset
Allows users to paste into password fields
Avoids deprecated APIs
Displays images with correct aspect ratio
Avoids Application Cache
Avoids requesting the notification permission on page load
Detected JavaScript libraries
Page has the HTML doctype
elinux.org Mobile Progressive Web App
36/100
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 (11)
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
PWA Optimized
Manifest doesn't have a maskable icon
Does not have a `<meta name="viewport">` tag with `width` or `initial-scale`
Content is not sized correctly for the viewport
Is not configured for a custom splash screen
Does not set a theme color for the address bar.
Does not provide a valid `apple-touch-icon`
Passed Audits (3)
Page load is fast enough on mobile networks
Contains some content when JavaScript is not available
Redirects HTTP traffic to HTTPS
elinux.org Mobile Accessibility
98/100
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.
Some elements have a `[tabindex]` value greater than 0
Passed Audits (27)
`[aria-*]` attributes are valid and not misspelled
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
`[role]` values are valid
`[aria-hidden="true"]` is not present on the document `<body>`
The page contains a heading, skip link, or landmark region
`[lang]` attributes have a valid value
`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
Background and foreground colors have a sufficient contrast ratio
`[id]` attributes on active, focusable elements are unique
`[aria-*]` attributes match their roles
`[role]`s are contained by their required parent element
`[accesskey]` values are unique
`[aria-*]` attributes have valid values
Image elements have `[alt]` attributes
ARIA IDs are unique
Form elements have associated labels
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
Presentational `<table>` elements avoid using `<th>`, `<caption>` or the `[summary]` attribute.
`[role]`s have all required `[aria-*]` attributes
Document has a `<title>` element
Heading elements appear in a sequentially-descending order
Links have a discernible name
`<html>` element has a valid value for its `[lang]` attribute
Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
`<html>` element has a `[lang]` attribute
Buttons have an accessible name
Mobile Usability
67/100
These checks validate how easily a visitor can use elinux.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
Size tap targets appropriately
Configure the viewport
Passed Audits (2)
Avoid plugins
Size content to viewport
Mobile Speed
51/100
These checks analyze the performance of elinux.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 (6)
Leverage browser caching
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Enable compression
Avoid landing page redirects
Optimize images
Reduce server response time
Passed Audits (4)
Minify CSS
Minify HTML
Minify JavaScript
Prioritize visible content
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