4chan.org 4chan
4chan is a simple image-based bulletin board where anyone can post comments and share images anonymously.
4chan.org Desktop Performance
100/100
These metrics represent real-world Chrome users experience viewing 4chan.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
First Contentful Paint99/100 0.6 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more.
Largest Contentful Paint99/100 0.7 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More
Speed Index100/100 0.6 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 0.6 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 (4)
Opportunities
These suggestions can help your page load faster. They don't directly affect the Performance score.
Eliminate render-blocking resources
Potential savings of 210 ms
212 ms
Diagnostics
More information about the performance of your application. These numbers don't directly affect the Performance score.
Avoid chaining critical requests
2 chains found
Largest Contentful Paint element
1 element found
Keep request counts low and transfer sizes small
17 requests • 152 KiB
Passed Audits (23)
Uses efficient cache policy on static assets
1 resource found
Minimize third-party usage
Third-party code blocked the main thread for 0 ms
Minimizes main-thread work
0.1 s
Initial server response time was short
Root document took 210 ms
Preconnect to required origins
Minify CSS
Use video formats for animated content
Avoids an excessive DOM size
292 elements
Uses passive listeners to improve scrolling performance
JavaScript execution time
0.0 s
Remove unused CSS
Preload key requests
Enable text compression
Defer offscreen images
Efficiently encode images
Avoids enormous network payloads
Total size was 152 KiB
Avoid multiple page redirects
Potential savings of 190 ms
Minify JavaScript
Properly size images
All text remains visible during webfont loads
Avoids `document.write()`
Serve images in next-gen formats
Remove unused JavaScript
4chan.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)
Document has a valid `hreflang`
Links are crawlable
Image elements have `[alt]` attributes
Document avoids plugins
Document has a `<title>` element
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Links have descriptive text
Document has a meta description
Page has successful HTTP status code
robots.txt is valid
Page isn’t blocked from indexing
4chan.org Desktop Best Practices
77/100
These checks highlight opportunities to improve the overall code health of 4chan.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
1 insecure request found
Browser Compatibility
Page lacks the HTML doctype, thus triggering quirks-mode
Passed Audits (11)
Detected JavaScript libraries
Avoids requesting the geolocation permission on page load
Displays images with correct aspect ratio
Avoids deprecated APIs
Avoids Application Cache
Avoids front-end JavaScript libraries with known security vulnerabilities
Allows users to paste into password fields
Links to cross-origin destinations are safe
Properly defines charset
Serves images with appropriate resolution
Avoids requesting the notification permission on page load
4chan.org 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)
Fast and reliable
Current page does not respond with a 200 when offline
`start_url` does not respond with a 200 when offline
PWA Optimized
Is not configured for a custom splash screen
Does not set a theme color for the address bar.
Manifest doesn't have a maskable icon
Installable
Web app manifest does not meet the installability requirements
Does not register a service worker that controls page and `start_url`
Does not use HTTPS
1 insecure request found
Passed Audits (5)
Contains some content when JavaScript is not available
Redirects HTTP traffic to HTTPS
Page load is fast enough on mobile networks
Provides a valid `apple-touch-icon`
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
4chan.org Desktop Accessibility
89/100
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 (2)
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
`<html>` element does not have a `[lang]` attribute
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.
Links do not have a discernible name
Passed Audits (9)
`[aria-hidden="true"]` is not present on the document `<body>`
Heading elements appear in a sequentially-descending order
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
The page contains a heading, skip link, or landmark region
Background and foreground colors have a sufficient contrast ratio
Image elements have `[alt]` attributes
Document has a `<title>` element
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
Desktop Speed
91/100
These checks analyze the performance of 4chan.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 (5)
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Leverage browser caching
Enable compression
Minify JavaScript
Optimize images
Passed Audits (5)
Avoid landing page redirects
Reduce server response time
Minify CSS
Minify HTML
Prioritize visible content
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