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kahoot.it Mobile Performance
23/100
These metrics represent real-world Chrome users experience viewing kahoot.it 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
First Input Delay
Largest Contentful Paint
Cumulative Layout Shift
First Contentful Paint
Metrics
Largest Contentful Paint1/100 10.1 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More
First Contentful Paint2/100 9.5 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more.
Speed Index12/100 9.5 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more.
Time to Interactive26/100 10.2 s
Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more.
Total Blocking Time48/100 620 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 0.001
Cumulative Layout Shift measures the movement of visible elements within the viewport. Learn more.
Should Fix (9)
Opportunities
These suggestions can help your page load faster. They don't directly affect the Performance score.
Remove unused JavaScript
Potential savings of 445 KiB
2,250 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
Minimize main-thread work
5.5 s
Reduce JavaScript execution time
4.2 s
Avoid long main-thread tasks
8 long tasks found
Keep request counts low and transfer sizes small
14 requests • 1,170 KiB
Largest Contentful Paint element
1 element found
Avoid large layout shifts
4 elements found
Avoid chaining critical requests
5 chains found
Passed Audits (20)
Avoids an excessive DOM size
28 elements
Uses efficient cache policy on static assets
2 resources found
Minify JavaScript
Efficiently encode images
Use video formats for animated content
Minify CSS
Avoids `document.write()`
Avoids enormous network payloads
Total size was 1,170 KiB
Preload key requests
Enable text compression
Eliminate render-blocking resources
Defer offscreen images
Minimize third-party usage
Third-party code blocked the main thread for 210 ms
Initial server response time was short
Root document took 30 ms
Properly size images
Uses passive listeners to improve scrolling performance
Preconnect to required origins
Remove unused CSS
Serve images in next-gen formats
Avoid multiple page redirects
Potential savings of 630 ms
kahoot.it Mobile 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 (12)
Links have descriptive text
Document uses legible font sizes
82.67% legible text
Document has a `<title>` element
Tap targets are sized appropriately
100% appropriately sized tap targets
Document has a valid `hreflang`
Page isn’t blocked from indexing
Page has successful HTTP status code
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
robots.txt is valid
Links are crawlable
Document has a meta description
Document avoids plugins
kahoot.it Mobile Best Practices
85/100
These checks highlight opportunities to improve the overall code health of kahoot.it 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 (2)
Trust and Safety
Does not use HTTPS
1 insecure request found
Includes front-end JavaScript libraries with known security vulnerabilities
1 vulnerability detected
Passed Audits (12)
Avoids Application Cache
No browser errors logged to the console
Page has the HTML doctype
Links to cross-origin destinations are safe
Displays images with correct aspect ratio
Avoids requesting the geolocation permission on page load
Detected JavaScript libraries
Serves images with appropriate resolution
Allows users to paste into password fields
Avoids requesting the notification permission on page load
Properly defines charset
Avoids deprecated APIs
kahoot.it Mobile Progressive Web App
21/100
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)
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 at 10.2 s
Installable
Does not use HTTPS
1 insecure request found
Does not register a service worker that controls page and `start_url`
Web app manifest does not meet the installability requirements
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 provide a valid `apple-touch-icon`
Passed Audits (4)
Content is sized correctly for the viewport
Redirects HTTP traffic to HTTPS
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Contains some content when JavaScript is not available
kahoot.it Mobile Accessibility
64/100
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)
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.
`[aria-*]` attributes do not match their roles
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.
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.
Best practices
These items highlight common accessibility best practices.
`[user-scalable="no"]` is used in the `<meta name="viewport">` element or the `[maximum-scale]` attribute is less than 5.
Passed Audits (10)
The page contains a heading, skip link, or landmark region
`[id]` attributes on active, focusable elements are unique
Buttons have an accessible name
Document has a `<title>` element
`<html>` element has a `[lang]` attribute
Links have a discernible name
`[aria-*]` attributes have valid values
`[aria-*]` attributes are valid and not misspelled
`[aria-hidden="true"]` is not present on the document `<body>`
`<html>` element has a valid value for its `[lang]` attribute
Mobile Usability
100/100
These checks validate how easily a visitor can use kahoot.it 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).
Passed Audits (5)
Avoid plugins
Configure the viewport
Size content to viewport
Size tap targets appropriately
Use legible font sizes
Mobile Speed
62/100
These checks analyze the performance of kahoot.it 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)
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Leverage browser caching
Prioritize visible content
Enable compression
Optimize images
Minify JavaScript
Passed Audits (4)
Avoid landing page redirects
Reduce server response time
Minify CSS
Minify HTML
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