Mensa.org What is Mensa? | Mensa International
mensa.org Desktop Performance
50/100
These metrics represent real-world Chrome users experience viewing mensa.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 Paint13/100 2.6 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more.
Largest Contentful Paint17/100 4.0 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More
Speed Index19/100 3.4 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more.
Time to Interactive73/100 3.4 s
Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more.
Total Blocking Time100/100 10 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more.
Cumulative Layout Shift100/100 0.01
Cumulative Layout Shift measures the movement of visible elements within the viewport. Learn more.
Should Fix (15)
Opportunities
These suggestions can help your page load faster. They don't directly affect the Performance score.
Eliminate render-blocking resources
Potential savings of 2,840 ms
2,840 ms
Serve images in next-gen formats
Potential savings of 1,352 KiB
1,080 ms
Avoid multiple page redirects
Potential savings of 380 ms
380 ms
Remove unused JavaScript
Potential savings of 126 KiB
240 ms
Properly size images
Potential savings of 119 KiB
80 ms
Remove unused CSS
Potential savings of 98 KiB
80 ms
Reduce initial server response time
Root document took 660 ms
59 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
Serve static assets with an efficient cache policy
64 resources found
Avoid enormous network payloads
Total size was 3,145 KiB
Largest Contentful Paint element
1 element found
Avoid long main-thread tasks
4 long tasks found
Avoid large layout shifts
5 elements found
Avoid chaining critical requests
49 chains found
Keep request counts low and transfer sizes small
117 requests • 3,145 KiB
Passed Audits (14)
Preconnect to required origins
Preload key requests
Avoids an excessive DOM size
284 elements
Efficiently encode images
Minimizes main-thread work
1.2 s
Use video formats for animated content
Enable text compression
Avoids `document.write()`
Minimize third-party usage
Third-party code blocked the main thread for 0 ms
Minify CSS
JavaScript execution time
0.3 s
Minify JavaScript
Potential savings of 21 KiB
Defer offscreen images
Uses passive listeners to improve scrolling performance
mensa.org Desktop 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)
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Links are not crawlable
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Links do not have descriptive text
2 links found
Document does not have a meta description
Document does not have a valid `rel=canonical`
Image elements do not have `[alt]` attributes
Passed Audits (7)
Page has successful HTTP status code
Document has a `<title>` element
Document avoids plugins
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Document has a valid `hreflang`
robots.txt is valid
Page isn’t blocked from indexing
mensa.org Desktop Best Practices
69/100
These checks highlight opportunities to improve the overall code health of mensa.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 (4)
Trust and Safety
Does not use HTTPS
2 insecure requests found
Includes front-end JavaScript libraries with known security vulnerabilities
4 vulnerabilities detected
Links to cross-origin destinations are unsafe
General
Browser errors were logged to the console
Passed Audits (10)
Detected JavaScript libraries
Avoids deprecated APIs
Displays images with correct aspect ratio
Serves images with appropriate resolution
Avoids requesting the geolocation permission on page load
Avoids requesting the notification permission on page load
Allows users to paste into password fields
Avoids Application Cache
Page has the HTML doctype
Properly defines charset
mensa.org Desktop Progressive Web App
19/100
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 (10)
Installable
Does not use HTTPS
2 insecure requests found
Does not register a service worker that controls page and `start_url`
Web app manifest does not meet the installability requirements
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
Does not provide a valid `apple-touch-icon`
Fast and reliable
`start_url` does not respond with a 200 when offline
Current page does not respond with a 200 when offline
Page load is not fast enough on mobile networks
Interactive on simulated mobile network at 13.6 s
Passed Audits (3)
Contains some content when JavaScript is not available
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Redirects HTTP traffic to HTTPS
mensa.org Desktop Accessibility
88/100
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.
Links do not have a discernible name
Image elements do not have `[alt]` attributes
Contrast
These are opportunities to improve the legibility of your content.
Background and foreground colors do not have a sufficient contrast ratio.
Navigation
These are opportunities to improve keyboard navigation in your application.
Heading elements are not in a sequentially-descending order
Passed Audits (19)
ARIA IDs are unique
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>`).
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
`<html>` element has a valid value for its `[lang]` attribute
`[aria-hidden="true"]` elements do not contain focusable descendents
`[role]`s have all required `[aria-*]` attributes
Document has a `<title>` element
`[id]` attributes on active, focusable elements are unique
`[aria-*]` attributes match their roles
The page contains a heading, skip link, or landmark region
`[aria-*]` attributes are valid and not misspelled
`<html>` element has a `[lang]` attribute
`[role]`s are contained by their required parent element
`<frame>` or `<iframe>` elements have a title
`[aria-*]` attributes have valid values
`[role]` values are valid
`[aria-hidden="true"]` is not present on the document `<body>`
Desktop Speed
62/100
These checks analyze the performance of mensa.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 (7)
Optimize images
Enable compression
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Minify JavaScript
Leverage browser caching
Minify HTML
Minify CSS
Passed Audits (3)
Avoid landing page redirects
Reduce server response time
Prioritize visible content
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