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Lighthouse Mobile

· 0 checks — Mobile Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.
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Detailed Report

Audit breakdown by category with detailed findings.

88

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
uk.com/assets/img/sites/kimchee_uk_com.jpg0.0 ms295.3 KiB
uk.com/assets/img/sites/parklife_uk_com.jpg0.0 ms291.7 KiB
uk.com/assets/img/table-desktop-ukcom.png?v=20.0 ms198.5 KiB
uk.com/assets/img/sites/spectre_uk_com.jpg0.0 ms189.3 KiB
uk.com/assets/img/sites/mirrormirror_uk_com.jpg0.0 ms154.8 KiB
uk.com/assets/img/table-mobile-ukcom.png?v=20.0 ms150.0 KiB
uk.com/assets/img/sites/theflorist_uk_com.jpg0.0 ms148.3 KiB
uk.com/assets/img/sites/russells_uk_com.jpg0.0 ms144.4 KiB
uk.com/assets/img/sites/motif_uk_com.jpg0.0 ms141.0 KiB
uk.com/assets/img/sites/logs_uk_com.jpg0.0 ms135.0 KiB
uk.com/assets/img/sites/bbf_uk_com.jpg0.0 ms113.9 KiB
uk.com/assets/img/sites/mitchells_uk_com.jpg0.0 ms113.5 KiB
uk.com/assets/img/sites/lifecentre_uk_com.jpg0.0 ms108.5 KiB
uk.com/assets/img/sites/wards_uk_com.jpg0.0 ms105.6 KiB
uk.com/assets/img/sites/abma_uk_com.jpg0.0 ms102.4 KiB
uk.com/assets/img/sites/plinth_uk_com.jpg0.0 ms98.0 KiB
uk.com/assets/img/sites/bonkers_uk_com.jpg0.0 ms90.7 KiB
uk.com/assets/js/lib/jquery-3.5.1.min.js0.0 ms87.6 KiB
uk.com/assets/img/sites/lucywalters_uk_com.jpg0.0 ms87.6 KiB
uk.com/assets/img/sites/avon_uk_com.jpg0.0 ms76.8 KiB
uk.com/assets/img/sites/thetintinshop_uk_com.jpg0.0 ms74.8 KiB
uk.com/assets/img/sites/circulon_uk_com.jpg0.0 ms74.7 KiB
uk.com/assets/img/sites/yourleisure_uk_com.jpg0.0 ms71.5 KiB
uk.com/assets/img/sites/osmo_uk_com.jpg0.0 ms53.0 KiB
uk.com/assets/css/style.css?v=1.1.60.0 ms51.7 KiB
uk.com/assets/css/bootstrap-grid.min.css0.0 ms50.5 KiB
uk.com/assets/img/logos/ukcom-primary.png0.0 ms32.5 KiB
uk.com/assets/js/lib/underscore.min.js?v=1.0.10.0 ms16.3 KiB
uk.com/assets/js/search.js?v=1.1.00.0 ms16.2 KiB
uk.com/assets/js/lib/modernizr.min.js?v=1.00.0 ms12.7 KiB
uk.com/assets/img/logos/ukcom-primary.svg0.0 ms10.8 KiB
uk.com/assets/fonts/albert-sans/albert-sans-v1-latin-900.woff20.0 ms9.8 KiB
uk.com/assets/js/home.js?v=1.0.10.0 ms9.8 KiB
uk.com/assets/fonts/albert-sans/albert-sans-v1-latin-regular.woff20.0 ms9.7 KiB
uk.com/assets/img/icons/icon-ukcom-uk-market.svg0.0 ms9.3 KiB
uk.com/assets/img/icons/icon-ukcom-unrestricted.svg0.0 ms7.3 KiB
uk.com/assets/img/icons/icon-ukcom-seo.svg0.0 ms6.1 KiB
uk.com/assets/img/icons/icon-ukcom-premium.svg0.0 ms5.6 KiB
uk.com/assets/js/main.js?v=1.0.10.0 ms5.1 KiB
uk.com/assets/img/icons/icon-ukcom-seamless.svg0.0 ms4.5 KiB
uk.com/assets/img/logos/ukcom-small.svg0.0 ms3.4 KiB
uk.com/assets/img/icons/oversized-icon-ukcom.svg0.0 ms3.2 KiB
uk.com/assets/img/icons/loader.svg0.0 ms3.0 KiB
uk.com/assets/img/icons/ukcom-mag-glass-location.svg0.0 ms2.3 KiB
uk.com/assets/img/icons/baseline-open_in_new-24px.svg0.0 ms795 B

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
kimchee.uk.com div.home-carousel-item > div.site-preview > a.site-preview__link > img
uk.com/assets/img/sites/kimchee_uk_com.jpg295.0 KiB289.5 KiB
parklife.uk.com div.home-carousel-item > div.site-preview > a.site-preview__link > img
uk.com/assets/img/sites/parklife_uk_com.jpg291.5 KiB286.0 KiB
spectre.uk.com div.home-carousel-item > div.site-preview > a.site-preview__link > img
uk.com/assets/img/sites/spectre_uk_com.jpg189.1 KiB183.6 KiB
mirrormirror.uk.com div.home-carousel-item > div.site-preview > a.site-preview__link > img
uk.com/assets/img/sites/mirrormirror_uk_com.jpg154.5 KiB149.0 KiB
theflorist.uk.com div.home-carousel-item > div.site-preview > a.site-preview__link > img
uk.com/assets/img/sites/theflorist_uk_com.jpg148.1 KiB142.5 KiB
russells.uk.com div.home-carousel-item > div.site-preview > a.site-preview__link > img
uk.com/assets/img/sites/russells_uk_com.jpg144.1 KiB138.6 KiB
motif.uk.com div.home-carousel-item > div.site-preview > a.site-preview__link > img
uk.com/assets/img/sites/motif_uk_com.jpg140.8 KiB135.4 KiB
logs.uk.com div.home-carousel-item > div.site-preview > a.site-preview__link > img
uk.com/assets/img/sites/logs_uk_com.jpg134.8 KiB129.6 KiB
section.section__home-chart > div.chart__wrapper > div.col-12 > img.chart__img section.section__home-chart > div.chart__wrapper > div.col-12 > img.chart__img
uk.com/assets/img/table-mobile-ukcom.png?v=2149.8 KiB118.5 KiB
bbf.uk.com div.home-carousel-item > div.site-preview > a.site-preview__link > img
uk.com/assets/img/sites/bbf_uk_com.jpg113.7 KiB109.4 KiB
mitchells.uk.com div.home-carousel-item > div.site-preview > a.site-preview__link > img
uk.com/assets/img/sites/mitchells_uk_com.jpg113.2 KiB108.9 KiB
lifecentre.uk.com div.home-carousel-item > div.site-preview > a.site-preview__link > img
uk.com/assets/img/sites/lifecentre_uk_com.jpg108.3 KiB104.2 KiB
wards.uk.com div.home-carousel-item > div.site-preview > a.site-preview__link > img
uk.com/assets/img/sites/wards_uk_com.jpg105.4 KiB101.3 KiB
abma.uk.com div.home-carousel-item > div.site-preview > a.site-preview__link > img
uk.com/assets/img/sites/abma_uk_com.jpg102.2 KiB98.2 KiB
plinth.uk.com div.home-carousel-item > div.site-preview > a.site-preview__link > img
uk.com/assets/img/sites/plinth_uk_com.jpg97.7 KiB94.0 KiB
bonkers.uk.com div.home-carousel-item > div.site-preview > a.site-preview__link > img
uk.com/assets/img/sites/bonkers_uk_com.jpg90.5 KiB87.0 KiB
lucywalters.uk.com div.home-carousel-item > div.site-preview > a.site-preview__link > img
uk.com/assets/img/sites/lucywalters_uk_com.jpg87.3 KiB84.0 KiB
avon.uk.com div.home-carousel-item > div.site-preview > a.site-preview__link > img
uk.com/assets/img/sites/avon_uk_com.jpg76.6 KiB73.7 KiB
thetintinshop.uk.com div.home-carousel-item > div.site-preview > a.site-preview__link > img
uk.com/assets/img/sites/thetintinshop_uk_com.jpg74.6 KiB71.7 KiB
circulon.uk.com div.home-carousel-item > div.site-preview > a.site-preview__link > img
uk.com/assets/img/sites/circulon_uk_com.jpg74.4 KiB71.6 KiB
yourleisure.uk.com div.home-carousel-item > div.site-preview > a.site-preview__link > img
uk.com/assets/img/sites/yourleisure_uk_com.jpg71.3 KiB68.6 KiB
osmo.uk.com div.home-carousel-item > div.site-preview > a.site-preview__link > img
uk.com/assets/img/sites/osmo_uk_com.jpg52.8 KiB50.8 KiB
.UK.COM div.container > div.home-hero > div#search > img.home-logo
uk.com/assets/img/logos/ukcom-primary.png32.3 KiB27.9 KiB

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-22-IMG
nodeLabel: .UK.COM
path: 6,HTML,2,BODY,4,MAIN,0,SECTION,0,DIV,0,DIV,0,DIV,0,IMG
selector: div.container > div.home-hero > div#search > img.home-logo
snippet: <img src="/assets/img/logos/ukcom-primary.png" onerror="this.src='';this.onerror=null;" alt=".UK.COM" itemprop="logo" class="home-logo">

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
uk.com/http/1.1
uk.com/assets/css/bootstrap-grid.min.csshttp/1.1
uk.com/assets/css/style.css?v=1.1.6http/1.1
uk.com/assets/js/lib/modernizr.min.js?v=1.0http/1.1
uk.com/assets/img/logos/ukcom-small.svghttp/1.1
uk.com/assets/img/logos/ukcom-primary.pnghttp/1.1
uk.com/assets/img/icons/loader.svghttp/1.1
uk.com/assets/img/icons/icon-ukcom-unrestricted.svghttp/1.1
uk.com/assets/img/icons/icon-ukcom-uk-market.svghttp/1.1
uk.com/assets/img/icons/icon-ukcom-seo.svghttp/1.1
uk.com/assets/img/icons/icon-ukcom-premium.svghttp/1.1
uk.com/assets/img/icons/icon-ukcom-seamless.svghttp/1.1
uk.com/assets/img/icons/oversized-icon-ukcom.svghttp/1.1
uk.com/assets/img/table-desktop-ukcom.png?v=2http/1.1
uk.com/assets/img/table-mobile-ukcom.png?v=2http/1.1
uk.com/assets/img/icons/ukcom-mag-glass-location.svghttp/1.1
uk.com/assets/img/sites/parklife_uk_com.jpghttp/1.1
uk.com/assets/img/sites/yourleisure_uk_com.jpghttp/1.1
uk.com/assets/img/sites/mitchells_uk_com.jpghttp/1.1
uk.com/assets/img/sites/motif_uk_com.jpghttp/1.1
uk.com/assets/img/sites/bonkers_uk_com.jpghttp/1.1
uk.com/assets/img/sites/circulon_uk_com.jpghttp/1.1
uk.com/assets/img/sites/wards_uk_com.jpghttp/1.1
uk.com/assets/img/sites/lucywalters_uk_com.jpghttp/1.1
uk.com/assets/img/sites/kimchee_uk_com.jpghttp/1.1
uk.com/assets/img/sites/abma_uk_com.jpghttp/1.1
uk.com/assets/img/sites/bbf_uk_com.jpghttp/1.1
uk.com/assets/img/sites/mirrormirror_uk_com.jpghttp/1.1
uk.com/assets/img/sites/theflorist_uk_com.jpghttp/1.1
uk.com/assets/img/sites/logs_uk_com.jpghttp/1.1
uk.com/assets/img/sites/spectre_uk_com.jpghttp/1.1
uk.com/assets/img/sites/plinth_uk_com.jpghttp/1.1
uk.com/assets/img/sites/lifecentre_uk_com.jpghttp/1.1
uk.com/assets/img/sites/osmo_uk_com.jpghttp/1.1
uk.com/assets/img/sites/thetintinshop_uk_com.jpghttp/1.1
uk.com/assets/img/sites/avon_uk_com.jpghttp/1.1
uk.com/assets/img/sites/russells_uk_com.jpghttp/1.1
uk.com/assets/img/logos/ukcom-primary.svghttp/1.1
uk.com/assets/js/lib/jquery-3.5.1.min.jshttp/1.1
uk.com/assets/js/main.js?v=1.0.1http/1.1
uk.com/assets/js/lib/underscore.min.js?v=1.0.1http/1.1
uk.com/assets/js/search.js?v=1.1.0http/1.1
uk.com/assets/js/home.js?v=1.0.1http/1.1
uk.com/assets/img/icons/baseline-open_in_new-24px.svghttp/1.1
uk.com/assets/fonts/albert-sans/albert-sans-v1-latin-900.woff2http/1.1
uk.com/assets/fonts/albert-sans/albert-sans-v1-latin-regular.woff2http/1.1
uk.com/assets/img/favicon-32x32.png?v=3http/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
value: no origins were preconnected
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
uk.com/assets/js/lib/modernizr.min.js?v=1.012.7 KiB826 ms
uk.com/assets/css/style.css?v=1.1.651.7 KiB1.4 s
uk.com/assets/css/bootstrap-grid.min.css50.5 KiB826 ms

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

Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Diagnostics

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: 290 ms 81.7 KiB
URLTransfer SizeEst Savings
uk.com/assets/css/bootstrap-grid.min.css50.2 KiB49.6 KiB
uk.com/assets/css/style.css?v=1.1.651.5 KiB32.1 KiB

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work

Why this matters

Performance issues directly impact user engagement and conversion rates.

CategoryTime Spent
Other912 ms
Script Evaluation493 ms
Style & Layout360 ms
Rendering183 ms
Script Parsing & Compilation92 ms
Parse HTML & CSS25 ms

Many navigations are performed by going back to a previous page, or forwards again. The back/forward cache (bfcache) can speed up these return navigations. Learn more about the bfcache

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reasonFailure type
The page has an unload handler in the main frame.Actionable

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 16.2 KiB
URLTransfer SizeEst Savings
uk.com/assets/css/style.css?v=1.1.651.7 KiB16.2 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 14.2 KiB
URLTransfer SizeEst Savings
uk.com/assets/js/search.js?v=1.1.016.0 KiB7.6 KiB
uk.com/assets/js/home.js?v=1.0.19.5 KiB4.6 KiB
uk.com/assets/js/main.js?v=1.0.14.8 KiB2.0 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: 0.0 ms 190.2 KiB
URLTransfer SizeEst Savings
www.googletagmanager.com/gtag/js?id=G-Y61CK76R81&cx=c&gtm=4e64f0155.5 KiB66.5 KiB
www.googletagmanager.com/gtm.js?id=GTM-TMT52RF116.9 KiB63.9 KiB
uk.com/assets/js/lib/jquery-3.5.1.min.js87.4 KiB59.8 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
uk.com/assets/img/sites/kimchee_uk_com.jpg295.3 KiB
uk.com/assets/img/sites/parklife_uk_com.jpg291.7 KiB
uk.com/assets/img/table-desktop-ukcom.png?v=2198.5 KiB
uk.com/assets/img/sites/spectre_uk_com.jpg189.3 KiB
www.googletagmanager.com/gtag/js?id=G-Y61CK76R81&cx=c&gtm=4e64f0155.6 KiB
uk.com/assets/img/sites/mirrormirror_uk_com.jpg154.8 KiB
uk.com/assets/img/table-mobile-ukcom.png?v=2150.0 KiB
uk.com/assets/img/sites/theflorist_uk_com.jpg148.3 KiB
uk.com/assets/img/sites/russells_uk_com.jpg144.4 KiB
uk.com/assets/img/sites/motif_uk_com.jpg141.0 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
section.section__home-chart > div.chart__wrapper > div.col-12 > img.chart__img section.section__home-chart > div.chart__wrapper > div.col-12 > img.chart__img
uk.com/assets/img/table-mobile-ukcom.png?v=2
div.row > div.col-12 > div.home-accent__img > img.accent-img div.row > div.col-12 > div.home-accent__img > img.accent-img
uk.com/assets/img/icons/oversized-icon-ukcom.svg
.UK.COM div.container > div.home-hero > div#search > img.home-logo
uk.com/assets/img/logos/ukcom-primary.png
UK MARKET VISIBILITY WITH GLOBAL REACH ul.brand-why__content--list > li.brand-why > div.brand-why__image-wrapper > img.brand-why__image
uk.com/assets/img/icons/icon-ukcom-uk-market.svg
PREMIUM AVAILABILITY ul.brand-why__content--list > li.brand-why > div.brand-why__image-wrapper > img.brand-why__image
uk.com/assets/img/icons/icon-ukcom-premium.svg
SEO & MARKET ACCESSIBILITY ul.brand-why__content--list > li.brand-why > div.brand-why__image-wrapper > img.brand-why__image
uk.com/assets/img/icons/icon-ukcom-seo.svg
SEAMLESS EXPANSION FOR BUSINESSES & STARTUPS ul.brand-why__content--list > li.brand-why > div.brand-why__image-wrapper > img.brand-why__image
uk.com/assets/img/icons/icon-ukcom-seamless.svg
UNRESTRICTED GLOBAL ACCESS ul.brand-why__content--list > li.brand-why > div.brand-why__image-wrapper > img.brand-why__image
uk.com/assets/img/icons/icon-ukcom-unrestricted.svg
.UK.COM div.col-12 > div.contact-info-wrapper > div.contact-info > img.contact-info-logo
uk.com/assets/img/logos/ukcom-primary.svg
.UK.COM div.row > div.header-logo-container > a > img.header-logo
uk.com/assets/img/logos/ukcom-small.svg
.UK.COM div.site-footer__section > div.site-footer__logo > a > img.logo--footer
uk.com/assets/img/logos/ukcom-small.svg

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

●Layout shift culprits
●Document request latency
●Optimize DOM size
●Font display
●Forced reflow
●LCP breakdown
●Optimize viewport for mobile
●User Timing marks and measures 5 user timings
●JavaScript execution time 0.6 s
●Avoid long main-thread tasks 4 long tasks found
●Network Requests
●Network Round Trip Times 160 ms
●Server Backend Latencies 20 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Avoid multiple page redirects
●Initial server response time was short Root document took 160 ms
●Avoid large layout shifts 2 layout shifts found
○INP breakdown
○Avoid non-composited animations
85

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.

Names and labels

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
section.section__home-chart > div.chart__wrapper > div.col-12 > img.chart__img section.section__home-chart > div.chart__wrapper > div.col-12 > img.chart__img

Labels ensure that form controls are announced properly by assistive technologies, like screen readers. Learn more about form element labels.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.ds__form-container > div#ds__search-form > div.form__input-group > input.avail-prefix-input div.ds__form-container > div#ds__search-form > div.form__input-group > input.avail-prefix-input

Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
main > section.section__home-hero > div.home-hero__arrow-down > a.arrow-down__arrow main > section.section__home-hero > div.home-hero__arrow-down > a.arrow-down__arrow

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.

Visible text labels that do not match the accessible name can result in a confusing experience for screen reader users. Learn more about accessible names.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
MENU div.container > div.row > div.nav-container > button#mobile-nav-toggle
○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
●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
●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.
●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
●Touch targets have sufficient size and spacing.
●Heading elements appear in a sequentially-descending order
●Document has a main landmark.
●Deprecated ARIA roles were not used
○`[accesskey]` values are unique
○`button`, `link`, and `menuitem` elements have accessible names
○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
○`[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
○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
○`[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
○The document does not use `<meta http-equiv="refresh">`
○`<object>` elements have alternate text
○Select elements have associated label elements.
○Skip links are focusable.
○No element has a `[tabindex]` value greater than 0
○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.
○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.
81

Best Practices

General

Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / WarningSource
Specifying overflow: visible on img, video and canvas tags may cause them to produce visual content outside of the element bounds. See https://github.com/WICG/shared-element-transitions/blob/main/debugging_overflow_on_images.md.
uk.com/
Unload event listeners are deprecated and will be removed.
uk.com/assets/js/home.js?v=1.0.1 line 274, col 11
●Uses HTTPS
●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
●Properly defines charset
●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 clickjacking with XFO or CSP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
●Page has valid source maps
○Redirects HTTP traffic to HTTPS
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.

Content Best Practices

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
section.section__home-chart > div.chart__wrapper > div.col-12 > img.chart__img section.section__home-chart > div.chart__wrapper > div.col-12 > img.chart__img

Format your HTML in a way that enables crawlers to better understand your app’s content.

○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
●Document has a valid `hreflang`
●Document has a valid `rel=canonical`
○robots.txt is valid

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