Britishcouncil.org British Council | The UK’s international culture and education organisation
The British Council is the United Kingdom’s international organisation for cultural relations and educational opportunities.
britishcouncil.org Desktop Performance
92/100
These metrics represent real-world Chrome users experience viewing britishcouncil.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
Largest Contentful Paint
Cumulative Layout Shift
First Input Delay
First Contentful Paint
Metrics
Largest Contentful Paint78/100 1.6 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More
First Contentful Paint87/100 1.0 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more.
Speed Index94/100 1.2 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more.
Time to Interactive99/100 1.4 s
Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more.
Cumulative Layout Shift100/100 0
Cumulative Layout Shift measures the movement of visible elements within the viewport. 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.
Should Fix (12)
Opportunities
These suggestions can help your page load faster. They don't directly affect the Performance score.
Eliminate render-blocking resources
Potential savings of 400 ms
402 ms
Remove unused JavaScript
Potential savings of 38 KiB
90 ms
Remove unused CSS
Potential savings of 43 KiB
90 ms
Minify JavaScript
Potential savings of 12 KiB
80 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
Avoid an excessive DOM size
1,088 elements
Serve static assets with an efficient cache policy
4 resources found
Avoid chaining critical requests
15 chains found
Largest Contentful Paint element
1 element found
Avoid large layout shifts
3 elements found
Keep request counts low and transfer sizes small
49 requests • 771 KiB
Avoid long main-thread tasks
1 long task found
Passed Audits (17)
Enable text compression
Efficiently encode images
Minimizes main-thread work
0.9 s
Avoids enormous network payloads
Total size was 771 KiB
Serve images in next-gen formats
Potential savings of 26 KiB
Avoid multiple page redirects
Potential savings of 190 ms
Properly size images
Initial server response time was short
Root document took 120 ms
Minimize third-party usage
Third-party code blocked the main thread for 0 ms
Minify CSS
Use video formats for animated content
Uses passive listeners to improve scrolling performance
Preload key requests
JavaScript execution time
0.3 s
Preconnect to required origins
Defer offscreen images
Avoids `document.write()`
britishcouncil.org Desktop SEO
83/100
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.
Document does not have a valid `rel=canonical`
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Links are not crawlable
Passed Audits (10)
Image elements have `[alt]` attributes
Document has a valid `hreflang`
robots.txt is valid
Page isn’t blocked from indexing
Page has successful HTTP status code
Document has a `<title>` element
Links have descriptive text
Document has a meta description
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Document avoids plugins
britishcouncil.org Desktop Best Practices
69/100
These checks highlight opportunities to improve the overall code health of britishcouncil.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
Links to cross-origin destinations are unsafe
Does not use HTTPS
1 insecure request found
Includes front-end JavaScript libraries with known security vulnerabilities
6 vulnerabilities detected
General
Browser errors were logged to the console
Passed Audits (10)
Avoids requesting the notification permission on page load
Avoids Application Cache
Serves images with appropriate resolution
Avoids requesting the geolocation permission on page load
Page has the HTML doctype
Properly defines charset
Allows users to paste into password fields
Avoids deprecated APIs
Detected JavaScript libraries
Displays images with correct aspect ratio
britishcouncil.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)
PWA Optimized
Manifest doesn't have a maskable icon
Does not set a theme color for the address bar.
Is not configured for a custom splash screen
Fast and reliable
Current page does not respond with a 200 when offline
`start_url` does not respond with a 200 when offline
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
Passed Audits (5)
Contains some content when JavaScript is not available
Page load is fast enough on mobile networks
Redirects HTTP traffic to HTTPS
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Provides a valid `apple-touch-icon`
britishcouncil.org Desktop Accessibility
100/100
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.
Passed Audits (25)
Links have a discernible name
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
Heading elements appear in a sequentially-descending order
ARIA IDs are unique
Image elements have `[alt]` attributes
Buttons have an accessible name
`[aria-*]` attributes have valid values
No element has a `[tabindex]` value greater than 0
`[aria-*]` attributes match their roles
`[aria-hidden="true"]` elements do not contain focusable descendents
`[role]` values are valid
`[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
Document has a `<title>` element
`[role]`s are contained by their required parent element
Form elements have associated labels
`[aria-*]` attributes are valid and not misspelled
`<html>` element has a valid value for its `[lang]` attribute
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
The page contains a heading, skip link, or landmark region
Background and foreground colors have a sufficient contrast ratio
`[role]`s have all required `[aria-*]` attributes
`[id]` attributes on active, focusable elements are unique
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
`[aria-hidden="true"]` is not present on the document `<body>`
Desktop Speed
87/100
These checks analyze the performance of britishcouncil.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 (3)
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Leverage browser caching
Minify JavaScript
Passed Audits (7)
Avoid landing page redirects
Enable compression
Reduce server response time
Minify CSS
Minify HTML
Optimize images
Prioritize visible content
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