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aqa.org.uk Mobile Performance
56/100
These metrics represent real-world Chrome users experience viewing aqa.org.uk 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 Contentful Paint
Largest Contentful Paint
First Input Delay
Cumulative Layout Shift
Metrics
Largest Contentful Paint16/100 5.7 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More
Time to Interactive20/100 11.2 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.
First Contentful Paint88/100 2.4 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more.
Total Blocking Time95/100 240 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
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.
Serve images in next-gen formats
Potential savings of 533 KiB
2,460 ms
Avoid multiple page redirects
Potential savings of 1,740 ms
1,740 ms
Remove unused JavaScript
Potential savings of 77 KiB
1,320 ms
Remove unused CSS
Potential savings of 65 KiB
510 ms
Efficiently encode images
Potential savings of 62 KiB
450 ms
Properly size images
Potential savings of 21 KiB
180 ms
Reduce initial server response time
Root document took 770 ms
165 ms
Minify JavaScript
Potential savings of 8 KiB
150 ms
Diagnostics
More information about the performance of your application. These numbers don't directly affect the Performance score.
Minimize main-thread work
2.6 s
Serve static assets with an efficient cache policy
5 resources found
JavaScript execution time
1.2 s
Avoid long main-thread tasks
7 long tasks found
Largest Contentful Paint element
1 element found
Avoid chaining critical requests
2 chains found
Keep request counts low and transfer sizes small
103 requests • 1,775 KiB
Passed Audits (13)
Avoids `document.write()`
Minimize third-party usage
Third-party code blocked the main thread for 210 ms
Eliminate render-blocking resources
Minify CSS
Enable text compression
Potential savings of 1 KiB
Avoids enormous network payloads
Total size was 1,775 KiB
Defer offscreen images
Avoids an excessive DOM size
390 elements
Use video formats for animated content
Uses passive listeners to improve scrolling performance
Preconnect to required origins
Preload key requests
All text remains visible during webfont loads

aqa.org.uk Mobile SEO
90/100
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.
Links do not have descriptive text
1 link found
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.
Tap targets are not sized appropriately
83% appropriately sized tap targets
Passed Audits (11)
Page isn’t blocked from indexing
Document has a valid `hreflang`
Document uses legible font sizes
98.2% legible text
Links are crawlable
Document has a meta description
Document avoids plugins
robots.txt is valid
Page has successful HTTP status code
Image elements have `[alt]` attributes
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Document has a `<title>` element

aqa.org.uk Mobile Best Practices
77/100
These checks highlight opportunities to improve the overall code health of aqa.org.uk 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
Includes front-end JavaScript libraries with known security vulnerabilities
4 vulnerabilities detected
Does not use HTTPS
2 insecure requests found
Links to cross-origin destinations are unsafe
Passed Audits (11)
Avoids deprecated APIs
Detected JavaScript libraries
Avoids requesting the geolocation permission on page load
No browser errors logged to the console
Properly defines charset
Avoids requesting the notification permission on page load
Page has the HTML doctype
Allows users to paste into password fields
Serves images with appropriate resolution
Avoids Application Cache
Displays images with correct aspect ratio

aqa.org.uk Mobile Progressive Web App
25/100
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 (9)
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
Page load is not fast enough on mobile networks
Interactive at 11.2 s
`start_url` does not respond with a 200 when offline
Current page does not respond with a 200 when offline
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
Passed Audits (5)
Content is sized correctly for the viewport
Provides a valid `apple-touch-icon`
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Redirects HTTP traffic to HTTPS
Contains some content when JavaScript is not available

aqa.org.uk Mobile Accessibility
96/100
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)
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-hidden="true"]` elements contain focusable descendents
Navigation
These are opportunities to improve keyboard navigation in your application.
Heading elements are not in a sequentially-descending order
Passed Audits (20)
`[role]`s are contained by their required parent element
`[aria-*]` attributes match their roles
Links have a discernible name
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
The page contains a heading, skip link, or landmark region
Background and foreground colors have a sufficient contrast ratio
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
`[id]` attributes on active, focusable elements are unique
ARIA IDs are unique
`<html>` element has a `[lang]` attribute
`[aria-*]` attributes have valid values
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
`[aria-hidden="true"]` is not present on the document `<body>`
`[role]`s have all required `[aria-*]` attributes
`[role]` values are valid
`[aria-*]` attributes are valid and not misspelled
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
Image elements have `[alt]` attributes
`<html>` element has a valid value for its `[lang]` attribute
Document has a `<title>` element

Mobile Usability
99/100
These checks validate how easily a visitor can use aqa.org.uk 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 (1)
Size tap targets appropriately
Passed Audits (4)
Avoid plugins
Configure the viewport
Size content to viewport
Use legible font sizes

Mobile Speed
78/100
These checks analyze the performance of aqa.org.uk 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 (2)
Leverage browser caching
Optimize images
Passed Audits (8)
Avoid landing page redirects
Enable compression
Reduce server response time
Minify CSS
Minify HTML
Minify JavaScript
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Prioritize visible content
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