Skip to content
https://reading.ac.uk

Lighthouse Desktop

· 0 checks — Desktop Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.
SCORE
0
GRADE
FIX
0
REVIEW
0
PASS
0
INFO
0

Detailed Report

Audit breakdown by category with detailed findings.

83

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling

Why this matters

Performance issues directly impact user engagement and conversion rates.

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

Why this matters

Performance issues directly impact user engagement and conversion rates.

A long cache lifetime can speed up repeat visits to your page. Learn more about caching.

Why this matters

Performance issues directly impact user engagement and conversion rates.

RequestCache TTLTransfer Size
www.reading.ac.uk/homepage/web/multimediafiles/ug-open-days-banner.jpg0.0 ms404.4 KiB
/homepage/web/multimediafiles/B35381-Spring-Webinar-Graph...0.0 ms233.1 KiB
www.reading.ac.uk/homepage/web/files/dr-homepage/assets-css-main.css0.0 ms198.7 KiB
www.reading.ac.uk/homepage/web/multimediafiles/sunrise-from-space.jpg0.0 ms197.2 KiB
/homepage/web/multimediafiles/2026-centenary-merchandise-...0.0 ms184.8 KiB
www.reading.ac.uk/homepage/web/files/dr-homepage/web-library.min.js0.0 ms176.7 KiB
/homepage/web/multimediafiles/2026-centenary-merchandise-...0.0 ms170.2 KiB
www.reading.ac.uk/homepage/web/multimediafiles/centenary-homepage-banner.jpg0.0 ms126.1 KiB
www.reading.ac.uk/homepage/web/multimediafiles/assets-img-icons-s35e128c89f.png0.0 ms99.7 KiB
app.termly.io/resource-blocker/b846a047-fc56-4159-aaf3-7bdc36e9790714400.0 s143.4 KiB
/homepage/web/multimediafiles/assets-new-images-landing_f...0.0 ms92.9 KiB
www.reading.ac.uk/homepage/web/multimediafiles/connectedworld296x150.jpg0.0 ms92.1 KiB
www.reading.ac.uk/homepage/web/files/dr-homepage/js-jquery-2.1.1.js0.0 ms82.7 KiB
/homepage/web/multimediafiles/assets-home-Great-course-se...0.0 ms75.6 KiB
/homepage/web/multimediafiles/assets-home-Explore-student...0.0 ms53.7 KiB
www.reading.ac.uk/homepage/web/files/dr-homepage/css-main.css0.0 ms53.1 KiB
/homepage/web/multimediafiles/assets-home-Get-a-Room1-296...0.0 ms48.3 KiB
www.reading.ac.uk/homepage/web/multimediafiles/teaching-and-learning-296x150.jpg0.0 ms42.8 KiB
/homepage/web/multimediafiles/assets-home-latest-news-296...0.0 ms40.4 KiB
www.reading.ac.uk/homepage/web/multimediafiles/business-296x150px.jpg0.0 ms40.2 KiB
www.reading.ac.uk/homepage/web/files/campaigns/effra-regular.woff0.0 ms30.3 KiB
www.reading.ac.uk/homepage/web/files/campaigns/effra-bold.woff0.0 ms29.6 KiB
www.reading.ac.uk/homepage/web/files/campaigns/effra-light.woff0.0 ms29.6 KiB
www.reading.ac.uk/homepage/web/files/campaigns/effra-heavy.woff0.0 ms28.9 KiB
www.reading.ac.uk/homepage/web/files/campaigns/effra-medium.woff0.0 ms28.8 KiB
www.reading.ac.uk/homepage/web/files/campaigns/rdgvesta-regular.woff0.0 ms28.7 KiB
www.reading.ac.uk/homepage/web/multimediafiles/unibuddy256x150.jpg0.0 ms26.2 KiB
www.reading.ac.uk/homepage/web/files/dr-homepage/web-components.min.js0.0 ms18.3 KiB
www.reading.ac.uk/homepage/web/files/dr-homepage/css-hero-slider-style-2.css0.0 ms18.0 KiB
www.reading.ac.uk/homepage/web/multimediafiles/assets-home-uorm-1-296x150.jpg0.0 ms16.1 KiB
www.reading.ac.uk/homepage/web/files/dr-homepage/js-modernizr.custom.04512.js0.0 ms15.6 KiB
www.reading.ac.uk/homepage/web/files/dr-homepage/february-assets-css-main.css0.0 ms12.7 KiB
www.reading.ac.uk/homepage/web/multimediafiles/legacy-uor-home-mobile.png0.0 ms6.1 KiB
app.termly.io/resource-blocker/support/894-6156b36a131577c56e7e.min.js14400.0 s8.4 KiB
www.reading.ac.uk/sc93/js/uor.module.cookie-blocker.js0.0 ms5.4 KiB
www.reading.ac.uk/homepage/web/multimediafiles/legacy-uor-home.png0.0 ms5.4 KiB
www.reading.ac.uk/homepage/web/files/dr-homepage/js-slider2.js0.0 ms4.7 KiB
/homepage/web/multimediafiles/assets-img-structure-bg-til...0.0 ms4.6 KiB
www.reading.ac.uk/homepage/web/multimediafiles/weibo.png0.0 ms4.1 KiB
/homepage/web/multimediafiles/assets-new-ig-investments-w...0.0 ms4.0 KiB
www.reading.ac.uk/homepage/web/multimediafiles/assets-new-ig-book-white.gif0.0 ms3.8 KiB
www.reading.ac.uk/homepage/web/files/dr-homepage/clearing-2025.css0.0 ms2.0 KiB
app.termly.io/resource-blocker/support/524-7d36cb122791702e3df2.min.js14400.0 s2.7 KiB
www.reading.ac.uk/homepage/web/multimediafiles/assets-new-ig-chart-94-white.gif0.0 ms1.7 KiB
app.termly.io/resource-blocker/support/861-8c5cb8c2beda05e3176b.min.js14400.0 s2.3 KiB
www.reading.ac.uk/homepage/web/multimediafiles/legacy-hamburger.png0.0 ms1.5 KiB
www.reading.ac.uk/homepage/web/multimediafiles/maginfying-glass-grey.svg0.0 ms1.1 KiB
www.reading.ac.uk/homepage/web/files/dr-homepage/js-main.min.js0.0 ms962 B
www.reading.ac.uk/homepage/web/files/dr-homepage/legacy-print.css0.0 ms938 B
app.termly.io/resource-blocker/support/377-e518d8a5c599aa1c5977.min.js14400.0 s873 B

Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLEst Savings
www.reading.ac.uk/homepage/web/files/campaigns/rdgvesta-regular.woff35 ms
www.reading.ac.uk/homepage/web/files/campaigns/effra-light.woff30 ms
www.reading.ac.uk/homepage/web/files/campaigns/effra-medium.woff30 ms
www.reading.ac.uk/homepage/web/files/campaigns/effra-bold.woff30 ms
www.reading.ac.uk/homepage/web/files/campaigns/effra-regular.woff30 ms
www.reading.ac.uk/homepage/web/files/campaigns/effra-heavy.woff30 ms

Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-0-IMG
nodeLabel: ul.cd-hero-slider > li.selected > div.cd-img-container > img.desktop
path: 6,HTML,2,BODY,10,DIV,0,DIV,4,DIV,0,DIV,0,SECTION,0,UL,8,LI,0,DIV,0,IMG
selector: ul.cd-hero-slider > li.selected > div.cd-img-container > img.desktop
snippet: <img class="desktop" src="..\homepage\web\multimediafiles\centenary-homepage-banner.jpg" alt="">

HTTP/2 and HTTP/3 offer many benefits over HTTP/1.1, such as multiplexing. Learn more about using modern HTTP.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLProtocol
www.reading.ac.uk/http/1.1
www.reading.ac.uk/sc93/js/uor.module.cookie-blocker.jshttp/1.1
www.reading.ac.uk/homepage/web/files/dr-homepage/assets-css-main.csshttp/1.1
www.reading.ac.uk/homepage/web/files/dr-homepage/february-assets-css-main.csshttp/1.1
www.reading.ac.uk/homepage/web/files/dr-homepage/css-main.csshttp/1.1
www.reading.ac.uk/homepage/web/files/dr-homepage/css-hero-slider-style-2.csshttp/1.1
www.reading.ac.uk/homepage/web/files/dr-homepage/clearing-2025.csshttp/1.1
www.reading.ac.uk/homepage/web/files/dr-homepage/js-modernizr.custom.04512.jshttp/1.1
www.reading.ac.uk/homepage/web/multimediafiles/legacy-hamburger.pnghttp/1.1
www.reading.ac.uk/homepage/web/multimediafiles/legacy-uor-home-mobile.pnghttp/1.1
www.reading.ac.uk/homepage/web/multimediafiles/legacy-uor-home.pnghttp/1.1
www.reading.ac.uk/homepage/web/multimediafiles/centenary-homepage-banner.jpghttp/1.1
www.reading.ac.uk/homepage/web/multimediafiles/ug-open-days-banner.jpghttp/1.1
/homepage/web/multimediafiles/B35381-Spring-Webinar-Graph...http/1.1
www.reading.ac.uk/homepage/web/multimediafiles/sunrise-from-space.jpghttp/1.1
/homepage/web/multimediafiles/2026-centenary-merchandise-...http/1.1
/homepage/web/multimediafiles/2026-centenary-merchandise-...http/1.1
/homepage/web/multimediafiles/assets-home-Great-course-se...http/1.1
/homepage/web/multimediafiles/assets-home-Explore-student...http/1.1
www.reading.ac.uk/homepage/web/multimediafiles/unibuddy256x150.jpghttp/1.1
/homepage/web/multimediafiles/assets-home-latest-news-296...http/1.1
www.reading.ac.uk/homepage/web/multimediafiles/teaching-and-learning-296x150.jpghttp/1.1
/homepage/web/multimediafiles/assets-home-Get-a-Room1-296...http/1.1
www.reading.ac.uk/homepage/web/multimediafiles/connectedworld296x150.jpghttp/1.1
www.reading.ac.uk/homepage/web/multimediafiles/business-296x150px.jpghttp/1.1
www.reading.ac.uk/homepage/web/multimediafiles/assets-home-uorm-1-296x150.jpghttp/1.1
/homepage/web/multimediafiles/assets-new-images-landing_f...http/1.1
www.reading.ac.uk/homepage/web/multimediafiles/weibo.pnghttp/1.1
www.reading.ac.uk/homepage/web/files/dr-homepage/js-jquery-2.1.1.jshttp/1.1
www.reading.ac.uk/homepage/web/files/dr-homepage/js-main.min.jshttp/1.1
www.reading.ac.uk/homepage/web/files/dr-homepage/js-slider2.jshttp/1.1
www.reading.ac.uk/homepage/web/files/dr-homepage/web-library.min.jshttp/1.1
www.reading.ac.uk/homepage/web/files/dr-homepage/web-components.min.jshttp/1.1
www.reading.ac.uk/homepage/web/files/dr-homepage/legacy-print.csshttp/1.1
www.reading.ac.uk/homepage/web/files/campaigns/effra-light.woffhttp/1.1
www.reading.ac.uk/homepage/web/multimediafiles/assets-img-icons-s35e128c89f.pnghttp/1.1
/homepage/web/multimediafiles/assets-img-structure-bg-til...http/1.1
www.reading.ac.uk/homepage/web/multimediafiles/maginfying-glass-grey.svghttp/1.1
www.reading.ac.uk/homepage/web/multimediafiles/assets-new-ig-chart-94-white.gifhttp/1.1
www.reading.ac.uk/homepage/web/multimediafiles/assets-new-ig-book-white.gifhttp/1.1
/homepage/web/multimediafiles/assets-new-ig-investments-w...http/1.1
www.reading.ac.uk/homepage/web/files/campaigns/effra-medium.woffhttp/1.1
www.reading.ac.uk/homepage/web/files/campaigns/effra-bold.woffhttp/1.1
www.reading.ac.uk/homepage/web/files/campaigns/effra-regular.woffhttp/1.1
www.reading.ac.uk/homepage/web/files/campaigns/rdgvesta-regular.woffhttp/1.1
www.reading.ac.uk/homepage/web/files/campaigns/effra-heavy.woffhttp/1.1
www.reading.ac.uk/homepage/web/multimediafiles/legacy-favicon.icohttp/1.1

Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

Why this matters

Performance issues directly impact user engagement and conversion rates.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.
title: Preconnected origins
description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.
title: Preconnect candidates
value: No additional origins are good candidates for preconnecting

Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer SizeDuration
www.reading.ac.uk/homepage/web/files/dr-homepage/assets-css-main.css198.7 KiB592 ms
www.reading.ac.uk/homepage/web/files/dr-homepage/css-main.css53.1 KiB366 ms
www.reading.ac.uk/sc93/js/uor.module.cookie-blocker.js5.4 KiB140 ms
www.reading.ac.uk/homepage/web/files/dr-homepage/js-modernizr.custom.04512.js15.6 KiB231 ms
www.reading.ac.uk/homepage/web/files/dr-homepage/february-assets-css-main.css12.7 KiB186 ms
www.reading.ac.uk/homepage/web/files/dr-homepage/css-hero-slider-style-2.css18.0 KiB231 ms
www.reading.ac.uk/homepage/web/files/dr-homepage/clearing-2025.css2.0 KiB140 ms

Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLResource SizeEst Savings
div.row > div.pane > div.image-placeholder > img div.row > div.pane > div.image-placeholder > img
www.reading.ac.uk/homepage/web/multimediafiles/connectedworld296x150.jpg91.7 KiB84.5 KiB
div.row > div.pane > div.image-placeholder > img div.row > div.pane > div.image-placeholder > img
/homepage/web/multimediafiles/assets-home-Great-course-se...75.2 KiB68.0 KiB
div.row > div.pane > div.image-placeholder > img div.row > div.pane > div.image-placeholder > img
/homepage/web/multimediafiles/assets-home-Explore-student...53.3 KiB46.1 KiB
div.row > div.pane > div.image-placeholder > img div.row > div.pane > div.image-placeholder > img
/homepage/web/multimediafiles/assets-home-Get-a-Room1-296...47.9 KiB40.6 KiB
div.row > div.pane > div.image-placeholder > img div.row > div.pane > div.image-placeholder > img
www.reading.ac.uk/homepage/web/multimediafiles/teaching-and-learning-296x150.jpg42.4 KiB35.2 KiB
div.row > div.pane > div.image-placeholder > img div.row > div.pane > div.image-placeholder > img
/homepage/web/multimediafiles/assets-home-latest-news-296...40.0 KiB32.8 KiB
div.row > div.pane > div.image-placeholder > img div.row > div.pane > div.image-placeholder > img
www.reading.ac.uk/homepage/web/multimediafiles/business-296x150px.jpg39.8 KiB32.5 KiB
div.cta-content > a.icon-map > i.cta-icon > ::before div.cta-content > a.icon-map > i.cta-icon > ::before
www.reading.ac.uk/homepage/web/multimediafiles/assets-img-icons-s35e128c89f.png99.3 KiB20.2 KiB
div.row > div.pane > div.image-placeholder > img div.row > div.pane > div.image-placeholder > img
www.reading.ac.uk/homepage/web/multimediafiles/unibuddy256x150.jpg25.8 KiB18.6 KiB
ul.cd-hero-slider > li.selected > div.cd-img-container > img.desktop ul.cd-hero-slider > li.selected > div.cd-img-container > img.desktop
www.reading.ac.uk/homepage/web/multimediafiles/centenary-homepage-banner.jpg125.7 KiB15.2 KiB
div.row > div.pane > div.image-placeholder > img div.row > div.pane > div.image-placeholder > img
www.reading.ac.uk/homepage/web/multimediafiles/assets-home-uorm-1-296x150.jpg15.7 KiB8.4 KiB
div.main > div.wrapper-wide > div.placeholder-image > img div.main > div.wrapper-wide > div.placeholder-image > img
/homepage/web/multimediafiles/assets-new-images-landing_f...92.5 KiB7.9 KiB
University of Reading ul.megamenu > li.home > a.mega-link > img
www.reading.ac.uk/homepage/web/multimediafiles/legacy-uor-home.png5.0 KiB4.2 KiB

These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.

Diagnostics

Minifying CSS files can reduce network payload sizes. Learn how to minify CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 36.3 KiB
URLTransfer SizeEst Savings
www.reading.ac.uk/homepage/web/files/dr-homepage/assets-css-main.css198.7 KiB14.6 KiB
www.reading.ac.uk/homepage/web/files/dr-homepage/css-main.css53.1 KiB12.6 KiB
www.reading.ac.uk/homepage/web/files/dr-homepage/css-hero-slider-style-2.css18.0 KiB6.3 KiB
www.reading.ac.uk/homepage/web/files/dr-homepage/february-assets-css-main.css12.7 KiB2.8 KiB

Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 160 ms 243.0 KiB
URLTransfer SizeEst Savings
www.reading.ac.uk/homepage/web/files/dr-homepage/assets-css-main.css198.3 KiB177.8 KiB
www.reading.ac.uk/homepage/web/files/dr-homepage/css-main.css52.7 KiB42.7 KiB
www.reading.ac.uk/homepage/web/files/dr-homepage/css-hero-slider-style-2.css17.6 KiB12.1 KiB
www.reading.ac.uk/homepage/web/files/dr-homepage/february-assets-css-main.css12.3 KiB10.3 KiB

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 90 ms 621.1 KiB
URLTransfer SizeEst Savings
www.reading.ac.uk/homepage/web/files/dr-homepage/web-library.min.js176.3 KiB102.3 KiB
www.googletagmanager.com/gtag/js?id=AW-11016496176&cx=c&gtm=4e64k0143.5 KiB87.4 KiB
www.googletagmanager.com/gtag/js?id=DC-13730620&cx=c&gtm=4e64k0131.7 KiB80.7 KiB
www.googletagmanager.com/gtag/js?id=DC-13024755&cx=c&gtm=4e64k0129.2 KiB80.5 KiB
www.googletagmanager.com/gtag/js?id=DC-8556031&cx=c&gtm=4e64k0129.2 KiB80.5 KiB
www.googletagmanager.com/gtm.js?id=GTM-TC325M192.1 KiB79.5 KiB
www.reading.ac.uk/homepage/web/files/dr-homepage/js-jquery-2.1.1.js82.3 KiB55.7 KiB
app.termly.io/resource-blocker/b846a047-fc56-4159-aaf3-7bdc36e97907143.1 KiB54.4 KiB

Minifying JavaScript files can reduce payload sizes and script parse time. Learn how to minify JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 2.3 KiB
URLTransfer SizeEst Savings
www.reading.ac.uk/sc93/js/uor.module.cookie-blocker.js4.6 KiB2.3 KiB

Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer Size
www.reading.ac.uk/homepage/web/multimediafiles/ug-open-days-banner.jpg404.4 KiB
/homepage/web/multimediafiles/B35381-Spring-Webinar-Graph...233.1 KiB
www.reading.ac.uk/homepage/web/files/dr-homepage/assets-css-main.css198.7 KiB
www.reading.ac.uk/homepage/web/multimediafiles/sunrise-from-space.jpg197.2 KiB
www.googletagmanager.com/gtm.js?id=GTM-TC325M192.5 KiB
/homepage/web/multimediafiles/2026-centenary-merchandise-...184.8 KiB
www.reading.ac.uk/homepage/web/files/dr-homepage/web-library.min.js176.7 KiB
/homepage/web/multimediafiles/2026-centenary-merchandise-...170.2 KiB
www.googletagmanager.com/gtag/js?id=AW-11016496176&cx=c&gtm=4e64k0143.5 KiB
app.termly.io/resource-blocker/b846a047-fc56-4159-aaf3-7bdc36e97907143.4 KiB

Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL
div.main > div.wrapper-wide > div.placeholder-image > img div.main > div.wrapper-wide > div.placeholder-image > img
/homepage/web/multimediafiles/assets-new-images-landing_f...
div.row > div.pane > div.image-placeholder > img div.row > div.pane > div.image-placeholder > img
/homepage/web/multimediafiles/assets-home-Great-course-se...
div.row > div.pane > div.image-placeholder > img div.row > div.pane > div.image-placeholder > img
/homepage/web/multimediafiles/assets-home-Explore-student...
div.row > div.pane > div.image-placeholder > img div.row > div.pane > div.image-placeholder > img
www.reading.ac.uk/homepage/web/multimediafiles/unibuddy256x150.jpg
div.row > div.pane > div.image-placeholder > img div.row > div.pane > div.image-placeholder > img
/homepage/web/multimediafiles/assets-home-latest-news-296...
div.row > div.pane > div.image-placeholder > img div.row > div.pane > div.image-placeholder > img
www.reading.ac.uk/homepage/web/multimediafiles/teaching-and-learning-296x150.jpg
div.row > div.pane > div.image-placeholder > img div.row > div.pane > div.image-placeholder > img
/homepage/web/multimediafiles/assets-home-Get-a-Room1-296...
div.row > div.pane > div.image-placeholder > img div.row > div.pane > div.image-placeholder > img
www.reading.ac.uk/homepage/web/multimediafiles/connectedworld296x150.jpg
div.row > div.pane > div.image-placeholder > img div.row > div.pane > div.image-placeholder > img
www.reading.ac.uk/homepage/web/multimediafiles/business-296x150px.jpg
div.row > div.pane > div.image-placeholder > img div.row > div.pane > div.image-placeholder > img
www.reading.ac.uk/homepage/web/multimediafiles/assets-home-uorm-1-296x150.jpg
University of Reading ul.megamenu > li.home > a.mega-link > img
www.reading.ac.uk/homepage/web/multimediafiles/legacy-uor-home.png
weibo icon div.pane > div.component > a.icon > img
www.reading.ac.uk/homepage/web/multimediafiles/weibo.png

More information about the performance of your application. These numbers don't directly affect the Performance score.

Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 403 ms
URLTime Spent
reading.ac.uk/213 ms
www.reading.ac.uk/190 ms
www.reading.ac.uk/0.0 ms
●Time to Interactive 2.2 s
●Layout shift culprits
●Optimize DOM size
●Forced reflow
●LCP breakdown
●Optimize viewport for mobile
●Max Potential First Input Delay 40 ms
●JavaScript execution time 0.2 s
●Minimizes main-thread work 0.6 s
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 30 ms
●Server Backend Latencies 30 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 60 ms
●Avoid large layout shifts 1 layout shift found
○INP breakdown
○User Timing marks and measures
○Avoid long main-thread tasks
○Avoid non-composited animations
88

Accessibility

These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.

ARIA

Some ARIA parent roles must contain specific child roles to perform their intended accessibility functions. Learn more about roles and required children elements.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Schools and departments Henley Business School University of Reading Malaysia div.s-wrapper > div.s-row-normal > div.base7 > ul.pad-none
Applicants Students Staff Alumni Local community div.s-wrapper > div.s-row-normal > div.base7 > ul.pad-none

ARIA dialog elements without accessible names may prevent screen readers users from discerning the purpose of these elements. Learn how to make ARIA dialog elements more accessible.

Why this matters

Informational: a Permissions-Policy directive showing feature -> allowed origins.

Source: MDN Permissions-Policy

Failing Elements
We use essential cookies to make our site work. With your consent, we may also … div#termly-code-snippet-support > div > div.termly-styles-root-f9c495 > div.termly-styles-consent-banner-fa199d

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.

Tables and lists

Screen readers require list items (`<li>`) to be contained within a parent `<ul>`, `<ol>` or `<menu>` to be announced properly. Learn more about proper list structure.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Schools and departments div.s-row-normal > div.base7 > ul.pad-none > li.display-tablecell
Henley Business School div.s-row-normal > div.base7 > ul.pad-none > li.display-tablecell
University of Reading Malaysia div.s-row-normal > div.base7 > ul.pad-none > li.display-tablecell
Applicants div.s-row-normal > div.base7 > ul.pad-none > li.display-tablecell
Students div.s-row-normal > div.base7 > ul.pad-none > li.display-tablecell
Staff div.s-row-normal > div.base7 > ul.pad-none > li.display-tablecell
Alumni div.s-row-normal > div.base7 > ul.pad-none > li.display-tablecell
Local community div.s-row-normal > div.base7 > ul.pad-none > li.display-tablecell

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

○Interactive controls are keyboard focusable
○Interactive elements indicate their purpose and state
○The page has a logical tab order
○Visual order on the page follows DOM order
○User focus is not accidentally trapped in a region
○The user's focus is directed to new content added to the page
○HTML5 landmark elements are used to improve navigation
○Offscreen content is hidden from assistive technology
○Custom controls have associated labels
○Custom controls have ARIA roles
●`[aria-*]` attributes match their roles
●`[aria-hidden="true"]` is not present on the document `<body>`
●`[role]`s have all required `[aria-*]` attributes
●`[role]` values are valid
●`[aria-*]` attributes have valid values
●`[aria-*]` attributes are valid and not misspelled
●Buttons have an accessible name
●Image elements have `[alt]` attributes
●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
●`button`, `link`, and `menuitem` elements have accessible names
●ARIA attributes are used as specified for the element's role
●Elements use only permitted ARIA attributes
●Background and foreground colors have a sufficient contrast ratio
●Document has a `<title>` element
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●Links are distinguishable without relying on color.
●Links have a discernible name
●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
●No element has a `[tabindex]` value greater than 0
●Touch targets have sufficient size and spacing.
●Heading elements appear in a sequentially-descending order
●Skip links are focusable.
●Document has a main landmark.
●Deprecated ARIA roles were not used
○`[accesskey]` values are unique
○`[aria-hidden="true"]` elements do not contain focusable descendents
○ARIA input fields have accessible names
○ARIA `meter` elements have accessible names
○ARIA `progressbar` elements have accessible names
○`[role]`s are contained by their required parent element
○Elements with the `role=text` attribute do not have focusable descendents.
○ARIA toggle fields have accessible names
○ARIA `tooltip` elements have accessible names
○ARIA `treeitem` elements have accessible names
○The page contains a heading, skip link, or landmark region
○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
○Definition list items are wrapped in `<dl>` elements
○ARIA IDs are unique
○No form fields have multiple labels
○`<frame>` or `<iframe>` elements have a title
○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
○Input buttons have discernible text.
○`<input type="image">` elements have `[alt]` text
○Form elements have associated labels
○The document does not use `<meta http-equiv="refresh">`
○`<object>` elements have alternate text
○Select elements have associated label elements.
○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
○`[lang]` attributes have a valid value
○`<video>` elements contain a `<track>` element with `[kind="captions"]`
○Tables have different content in the summary attribute and `<caption>`.
○All heading elements contain content.
○Uses ARIA roles only on compatible elements
○Image elements do not have `[alt]` attributes that are redundant text.
○Identical links have the same purpose.
○Elements with visible text labels have matching accessible names.
○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.
○`<td>` elements in a large `<table>` have one or more table headers.
77

Best Practices

Trust and Safety

All sites should be protected with HTTPS, even ones that don't handle sensitive data. This includes avoiding mixed content, where some resources are loaded over HTTP despite the initial request being served over HTTPS. HTTPS prevents intruders from tampering with or passively listening in on the communications between your app and your users, and is a prerequisite for HTTP/2 and many new web platform APIs. Learn more about HTTPS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Insecure URLRequest Resolution
www.reading.ac.uk/Allowed

Browser Compatibility

A character encoding declaration is required. It can be done with a `<meta>` tag in the first 1024 bytes of the HTML or in the Content-Type HTTP response header. Learn more about declaring the character encoding.

Why this matters

Performance issues directly impact user engagement and conversion rates.

●Avoids deprecated APIs
●Avoids third-party cookies
●Allows users to paste into input fields
●Avoids requesting the geolocation permission on page load
●Avoids requesting the notification permission on page load
●Displays images with correct aspect ratio
●Serves images with appropriate resolution
●Page has the HTML doctype
●No browser errors logged to the console
●No issues in the `Issues` panel in Chrome Devtools
●Ensure CSP is effective against XSS attacks
●Use a strong HSTS policy
●Ensure proper origin isolation with COOP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
●Page has valid source maps
○Redirects HTTP traffic to HTTPS
○Mitigate clickjacking with XFO or CSP
92

SEO

These checks ensure that your page is following basic search engine optimization advice. There are many additional factors Lighthouse does not score here that may affect your search ranking, including performance on Core Web Vitals. Learn more about Google Search Essentials.

Crawling and Indexing

If your robots.txt file is malformed, crawlers may not be able to understand how you want your website to be crawled or indexed. Learn more about robots.txt.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Line #ContentError
18Disallow: http://www.rdg.ac.uk/WebStatsPattern should either be empty, start with "/" or "*"
19Disallow: http://www.reading.ac.uk/WebStatsPattern should either be empty, start with "/" or "*"

To appear in search results, crawlers need access to your app.

○Structured data is valid
●Page isn’t blocked from indexing
●Document has a `<title>` element
●Document has a meta description
●Page has successful HTTP status code
●Links have descriptive text
●Links are crawlable
●Image elements have `[alt]` attributes
●Document has a valid `hreflang`
○Document has a valid `rel=canonical`

Send Feedback