Catonmat.net good coders code, great coders reuse
Peteris Krumins' blog about programming, hacking, software reuse, software ideas, computer security, browserling, google and technology.

catonmat.net Desktop Performance
97/100
These metrics represent real-world Chrome users experience viewing catonmat.net 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
Largest Contentful Paint
First Contentful Paint
Cumulative Layout Shift
Metrics
Cumulative Layout Shift70/100 0.171
Cumulative Layout Shift measures the movement of visible elements within the viewport. Learn more.
Largest Contentful Paint95/100 1.0 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More
First Contentful Paint99/100 0.6 s
First Contentful Paint marks the time at which the first 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.
Time to Interactive100/100 0.6 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 (9)
Opportunities
These suggestions can help your page load faster. They don't directly affect the Performance score.
Serve images in next-gen formats
Potential savings of 307 KiB
340 ms
Eliminate render-blocking resources
Potential savings of 210 ms
207 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
13 resources found
Avoid an excessive DOM size
1,601 elements
Avoid long main-thread tasks
1 long task found
Avoid chaining critical requests
3 chains found
Largest Contentful Paint element
1 element found
Keep request counts low and transfer sizes small
20 requests • 570 KiB
Avoid large layout shifts
5 elements found
Passed Audits (20)
Efficiently encode images
Avoids enormous network payloads
Total size was 570 KiB
Minify CSS
Remove unused JavaScript
Potential savings of 20 KiB
Avoid multiple page redirects
Potential savings of 190 ms
Avoids `document.write()`
Minimize third-party usage
Third-party code blocked the main thread for 0 ms
All text remains visible during webfont loads
Preconnect to required origins
Enable text compression
Use video formats for animated content
Properly size images
Potential savings of 10 KiB
Uses passive listeners to improve scrolling performance
Initial server response time was short
Root document took 340 ms
Defer offscreen images
JavaScript execution time
0.0 s
Minimizes main-thread work
0.3 s
Preload key requests
Minify JavaScript
Remove unused CSS

catonmat.net Desktop SEO
82/100
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 (2)
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Image elements do not have `[alt]` attributes
Document does not have a meta description
Passed Audits (9)
Document has a valid `rel=canonical`
Links are crawlable
Document has a `<title>` element
Document has a valid `hreflang`
Links have descriptive text
Document avoids plugins
Page isn’t blocked from indexing
Page has successful HTTP status code
Has a `<meta name="viewport">` tag with `width` or `initial-scale`

catonmat.net Desktop Best Practices
92/100
These checks highlight opportunities to improve the overall code health of catonmat.net 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)
Avoids requesting the geolocation permission on page load
Allows users to paste into password fields
No browser errors logged to the console
Avoids Application Cache
Avoids requesting the notification permission on page load
Detected JavaScript libraries
Serves images with appropriate resolution
Properly defines charset
Links to cross-origin destinations are safe
Avoids front-end JavaScript libraries with known security vulnerabilities
Page has the HTML doctype
Avoids deprecated APIs
Displays images with correct aspect ratio

catonmat.net Desktop Progressive Web App
48/100
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 (8)
PWA Optimized
Is not configured for a custom splash screen
Manifest doesn't have a maskable icon
Does not set a theme color for the address bar.
Fast and reliable
`start_url` does not respond with a 200 when offline
Current page 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 (5)
Page load is fast enough on mobile networks
Provides a valid `apple-touch-icon`
Contains some content when JavaScript is not available
Redirects HTTP traffic to HTTPS
Has a `<meta name="viewport">` tag with `width` or `initial-scale`

catonmat.net Desktop Accessibility
66/100
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 (4)
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.
Image elements do not have `[alt]` attributes
Links do not have a discernible name
Form elements do not have associated labels
Contrast
These are opportunities to improve the legibility of your content.
Background and foreground colors do not have a sufficient contrast ratio.
Passed Audits (10)
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
`<html>` element has a valid value for its `[lang]` attribute
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
`[aria-hidden="true"]` is not present on the document `<body>`
Document has a `<title>` element
The page contains a heading, skip link, or landmark region
Heading elements appear in a sequentially-descending order
`[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 `[lang]` attribute
Buttons have an accessible name

Desktop Speed
70/100
These checks analyze the performance of catonmat.net 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)
Optimize images
Enable compression
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Leverage browser caching
Minify CSS
Minify JavaScript
Passed Audits (4)
Avoid landing page redirects
Reduce server response time
Minify HTML
Prioritize visible content
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