Lighthouse Desktop

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

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Detailed Report

Audit breakdown by category with detailed findings.

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.

Request	Cache TTL	Transfer Size
/js/gigya.js?apiKey=3_qF2rIOImySC7iiGYz1cYJl9bIg2nWvFOaBk...	900.0 s	238.4 KiB
t.contentsquare.net/uxa/47014ce890284.js	900.0 s	148.9 KiB
/AssetPicker/images/0/0/17/32/1122395/GettyImages_1413492...	172800.0 s	286.4 KiB
connect.facebook.net/en_US/fbevents.js	1200.0 s	96.6 KiB
connect.facebook.net/en_US/bundle/sdk.js/	1200.0 s	78.5 KiB
/pagead/managed/js/activeview/current/ufs_web_display.js	3600.0 s	73.1 KiB
/95c42f83a3579fd14225f1f0c8050f542f411701/satelliteLib-5c...	3600.0 s	71.1 KiB
/AssetPicker/images/0/0/18/15/1183731/Best_Law_Charlton_T...	172800.0 s	168.1 KiB
/signals/config/232816140567939?v=2.9.303&r=stable&domain...	1200.0 s	46.6 KiB
/AssetPicker/images/0/0/13/81/872873/ATC_Academy_HR-71576...	172800.0 s	134.7 KiB
/AssetPicker/images/0/0/21/230/1435263/PL_Fan_Mail_BTS_04...	172800.0 s	113.8 KiB
/AssetPicker/images/0/0/22/106/1469050/exclusive_access_a...	172800.0 s	95.4 KiB
/AssetPicker/images/0/0/19/70/1263302/GettyImages_7905441...	172800.0 s	87.0 KiB
platform.twitter.com/widgets.js	1800.0 s	27.3 KiB
/AssetPicker/images/0/0/22/106/1469055/official_app175335...	172800.0 s	53.0 KiB
/AssetPicker/images/0/0/22/105/1468706/megastore175326602...	172800.0 s	41.3 KiB
snap.licdn.com/li.lms-analytics/insight.min.js	86400.0 s	18.7 KiB
/AssetPicker/images/0/0/23/250/1571503/ManUtd_ECom_Resizi...	172800.0 s	17.6 KiB
assets.manutd.com/jsencrypt.min.js	172800.0 s	16.8 KiB
connect.facebook.net/en_EN/sdk.js	1200.0 s	5.0 KiB
/AssetPicker/images/0/0/23/250/1571429/Jim_Thwaites_Danie...	172800.0 s	13.5 KiB
/WRSiteInterceptEngine/?Q_SIID=SI_eE9k0IktdWX45z7&Q_LOC=h...	3600.0 s	4.6 KiB
/dxjsmodule/12.1a2b7192fd54e87d3971.chunk.js?Q_CLIENTVERS...	604800.0 s	35.8 KiB
/WRSiteInterceptEngine/?Q_SIID=SI_dnEH7FtHHB2OLf7&Q_LOC=h...	3600.0 s	4.1 KiB
/AssetPicker/images/0/0/23/250/1571459/Fletcher_Inside_Ca...	172800.0 s	10.8 KiB
ct.pinterest.com/static/ct/token_create.js	7200.0 s	3.9 KiB
/AssetPicker/images/0/0/23/242/1569315/GettyImages_227119...	172800.0 s	9.7 KiB
s.pinimg.com/ct/lib/main.10d2511a.js	1209600.0 s	27.6 KiB
/AssetPicker/images/0/0/23/251/1571708/Jason_Wilcos_Engla...	172800.0 s	8.3 KiB
/dxjsmodule/37.7ea1ffe71ad8c0799cc1.chunk.js?Q_CLIENTVERS...	604800.0 s	18.6 KiB
s.pinimg.com/ct/core.js	7200.0 s	2.1 KiB
/AssetPicker/images/0/0/23/250/1571475/Fletcher_Inside_Ca...	172800.0 s	3.7 KiB
/collect?v=2&fmt=js&pid=3443450&time=1776897769175&li_ads...	0.0 ms	273 B
/pagead/js/r20260421/r20110914/client/window_focus_fy2021.js	1209600.0 s	1.6 KiB
/tr/?id=232816140567939&ev=PageView&dl=https%3A%2F%2Fwww....	0.0 ms	16 B
/pagead/js/r20260421/r20110914/client/window_focus_fy2021.js	1209600.0 s	0 B

Layout shifts occur when elements move absent any user interaction. Investigate the causes of layout shifts, such as elements being added, removed, or their fonts changing as the page loads.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]

items: [map[node:map[type:text value:Total] score:0.001493] map[score:0.001493 subItems:map[items:[map[cause:Web font extra:map[type:url value:https://www.manutd.com/assets/fonts/Montserrat/montserrat-bold.woff]]] type:subitems]]]

items: [map[node:map[type:text value:Total] score:0.185185] map[node:map[boundingRect:map[bottom:7635 height:7264 left:0 right:1350 top:371 width:1350] lhId:page-8-DIV nodeLabel:HOME PAGE TODAY ON MANUTD.COM LATEST NEWS FLETCHER: 'UNITED IS ALL I KNOW' Art… path:1,HTML,1,BODY,1,DIV,4,DIV,2,DIV,3,DIV selector:div#root > div.page-wrap > div#homePage > div#content snippet:<div class="main-container" id="content"> type:node] score:0.185185]]

A forced reflow occurs when JavaScript queries geometric properties (such as offsetWidth) after styles have been invalidated by a change to the DOM state. This can result in poor performance. Learn more about forced reflows and possible mitigations.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]

items: [map[reflowTime:131.865 source:map[column:2.564038e+06 line:2 type:source-location url:https://www.manutd.com/dist/mu-jss-app/static/js/main.3497de50.js urlProvider:network]]]

headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]

items: [map[reflowTime:43.381 source:map[type:text value:[unattributed]]] map[reflowTime:40.305 source:map[column:2.367304e+06 line:1 type:source-location url:https://www.manutd.com/dist/mu-jss-app/static/js/main.3497de50.js urlProvider:network]] map[reflowTime:40.242 source:map[column:2.362874e+06 line:1 type:source-location url:https://www.manutd.com/dist/mu-jss-app/static/js/main.3497de50.js urlProvider:network]] map[reflowTime:28.415 source:map[column:110992 line:1 type:source-location url:https://www.manutd.com/dist/mu-jss-app/static/js/main.3497de50.js urlProvider:network]] map[reflowTime:22.903 source:map[column:2.432817e+06 line:1 type:source-location url:https://www.manutd.com/dist/mu-jss-app/static/js/main.3497de50.js urlProvider:network]]]

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.

	URL	Resource Size	Est Savings
body > div#google_image_div > a#aw0 > img.img_ad `body > div#google_image_div > a#aw0 > img.img_ad`	tpc.googlesyndication.com/simgad/13214435203550497690	184.3 KiB	97.7 KiB
Manchester United Club Crest `div.fluid-container > div.secondary-header-logo > a > span.icon-mu-logo-cms`	assets.manutd.com/AssetPicker/images/0/0/3/2/197240/Header-Logo1500994616801.png	78.1 KiB	67.8 KiB
MUTV `div.dfp-ads__sponsor > a > span > img.light-sponsor-child`	/AssetPicker/images/0/0/7/70/476870/MUTV-DarkBG1515756050...	33.5 KiB	33.2 KiB
United Store `div.dfp-ads__sponsor > a > span > img.light-sponsor-child`	/AssetPicker/images/0/0/20/197/1361217/United-Store-Mono-...	26.2 KiB	25.4 KiB
Snapdragon `ul > li > a > img`	/AssetPicker/images/0/0/20/86/1332850/Snapdragon_edit_1_P...	11.5 KiB	11.0 KiB
Adidas `ul > li > a > img`	/AssetPicker/images/0/0/18/180/1225819/Performance_Logo_B...	8.9 KiB	8.8 KiB
DXC `ul > li > a > img`	/AssetPicker/images/0/0/23/186/1555106/man_U_DXC_reversed...	8.9 KiB	8.4 KiB
div.mu-content > div.mu-item > a#destLink > div.img-holder `div.mu-content > div.mu-item > a#destLink > div.img-holder`	www.manutd.com/assets/images/bg/noImage.png	24.4 KiB	6.7 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-7-FIGURE

nodeLabel: article.mu-item > div.img-holder > div.lazyload-wrapper > figure.figure-component

path: 1,HTML,1,BODY,1,DIV,4,DIV,2,DIV,3,DIV,1,DIV,0,DIV,0,DIV,0,DIV,1,DIV,2,DIV,0,DIV,0,ARTICLE,0,DIV,0,DIV,0,FIGURE

selector: article.mu-item > div.img-holder > div.lazyload-wrapper > figure.figure-component

snippet: <figure class="figure-component figure-adaptive " style="background-image: url("//assets.manutd.com/AssetPicker/images/0/0/23/250/1…");">

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

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.

URL	Transfer Size	Duration
www.manutd.com/ui-branding/styles/home-en.min.css?v=5124	192.4 KiB	164 ms
www.manutd.com/dist/mu-jss-app/static/css/main.a28fad0d.css	6.1 KiB

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.

URL	Est Savings
www.manutd.com/assets/fonts/Montserrat/montserrat-bold.woff	20 ms

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

These are the largest layout shifts observed on the page. Each table item represents a single layout shift, and shows the element that shifted the most. Below each item are possible root causes that led to the layout shift. Some of these layout shifts may not be included in the CLS metric value due to windowing. Learn how to improve CLS

Why this matters

Performance issues directly impact user engagement and conversion rates.

Element	Layout shift score
HOME PAGE TODAY ON MANUTD.COM LATEST NEWS FLETCHER: 'UNITED IS ALL I KNOW' Art… `div#root > div.page-wrap > div#homePage > div#content`	0.185
	0.001

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: 120 ms 175.4 KiB

URL	Transfer Size	Est Savings
www.manutd.com/ui-branding/styles/home-en.min.css?v=5124	192.0 KiB	175.4 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: 650 ms 1.4 MiB

URL	Transfer Size	Est Savings
www.manutd.com/dist/mu-jss-app/static/js/main.3497de50.js	773.9 KiB	545.2 KiB
www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js	361.8 KiB	241.8 KiB
/js/gigya.js?apiKey=3_qF2rIOImySC7iiGYz1cYJl9bIg2nWvFOaBk...	237.8 KiB	145.8 KiB
/pagead/managed/js/gpt/m202604200101/pubads_impl.js?cb=31...	187.7 KiB	98.7 KiB
t.contentsquare.net/uxa/47014ce890284.js	148.4 KiB	66.1 KiB
analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwOQ.js	121.0 KiB	63.0 KiB
www.googletagmanager.com/gtag/js?id=AW-960646173&l=dataLayer	145.6 KiB	53.1 KiB
connect.facebook.net/en_US/bundle/sdk.js/	78.4 KiB	49.8 KiB
/dxjsmodule/12.1a2b7192fd54e87d3971.chunk.js?Q_CLIENTVERS...	35.7 KiB	35.5 KiB
connect.facebook.net/en_US/fbevents.js	96.5 KiB	32.3 KiB
/pagead/managed/js/activeview/current/ufs_web_display.js	73.1 KiB	30.9 KiB
/pagead/managed/js/activeview/m202604200101/ufs_web_displ...	73.1 KiB	30.2 KiB
/dxjsmodule/12.1a2b7192fd54e87d3971.chunk.js?Q_CLIENTVERS...	35.7 KiB	27.4 KiB

Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to reduce Javascript execution time.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Total CPU Time	Script Evaluation	Script Parse
www.manutd.com/dist/mu-jss-app/static/js/main.3497de50.js	1.1 s	714 ms	108 ms
t.contentsquare.net/uxa/47014ce890284.js	484 ms	434 ms	18 ms
www.manutd.com/	394 ms	3.1 ms	0.6 ms
/pagead/managed/js/gpt/m202604200101/pubads_impl.js?cb=31...	387 ms	300 ms	30 ms
Unattributable	370 ms	27 ms	0.0 ms
www.googletagmanager.com/gtag/js?id=AW-960646173&l=dataLayer	121 ms	106 ms	14 ms
/js/gigya.js?apiKey=3_qF2rIOImySC7iiGYz1cYJl9bIg2nWvFOaBk...	113 ms	84 ms	25 ms
analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwOQ.js	97 ms	78 ms	17 ms
/pagead/managed/js/activeview/m202604200101/ufs_web_displ...	90 ms	80 ms	8.6 ms
/95c42f83a3579fd14225f1f0c8050f542f411701/satelliteLib-5c...	83 ms	68 ms	11 ms
/pagead/managed/js/activeview/current/ufs_web_display.js	81 ms	69 ms	9.7 ms
www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js	76 ms	37 ms	38 ms
/extensions/EPc7341b33570d4c988798fc9f0093d4b2/AppMeasure...	63 ms	63 ms	0.2 ms
/dxjsmodule/12.1a2b7192fd54e87d3971.chunk.js?Q_CLIENTVERS...	57 ms	43 ms	14 ms
/signals/config/232816140567939?v=2.9.303&r=stable&domain...	52 ms	44 ms	6.7 ms

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.

Category	Time Spent
Script Evaluation	2.4 s
Other	569 ms
Script Parsing & Compilation	357 ms
Style & Layout	302 ms
Rendering	121 ms
Parse HTML & CSS	94 ms
Garbage Collection	66 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 reason	Failure type
Pages with cache-control:no-store header cannot enter back/forward cache.	Actionable
Pages whose main resource has cache-control:no-store cannot enter back/forward cache.	Not actionable
Back/forward cache is disabled because some JavaScript network request received resource with Cache-Control: no-store header.	Not actionable

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.

URL	Transfer Size
www.manutd.com/dist/mu-jss-app/static/js/main.3497de50.js	774.2 KiB
www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js	362.4 KiB
/AssetPicker/images/0/0/17/32/1122395/GettyImages_1413492...	286.4 KiB
www.manutd.com/ui-branding/assets/images/icons-sCQemvo3dLg6kFPdpLs5p.png	249.4 KiB
/js/gigya.js?apiKey=3_qF2rIOImySC7iiGYz1cYJl9bIg2nWvFOaBk...	238.4 KiB
www.manutd.com/ui-branding/styles/home-en.min.css?v=5124	192.4 KiB
/pagead/managed/js/gpt/m202604200101/pubads_impl.js?cb=31...	187.7 KiB
tpc.googlesyndication.com/simgad/13214435203550497690	184.7 KiB
/AssetPicker/images/0/0/18/15/1183731/Best_Law_Charlton_T...	168.1 KiB
t.contentsquare.net/uxa/47014ce890284.js	148.9 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
Adidas `ul > li > a > img`	/AssetPicker/images/0/0/18/180/1225819/Performance_Logo_B...
United Store `div.dfp-ads__sponsor > a > span > img.light-sponsor-child`	/AssetPicker/images/0/0/20/197/1361217/United-Store-Mono-...
United Store `div.dfp-ads__sponsor > a > span > img.light-sponsor-child`	/AssetPicker/images/0/0/20/197/1361217/United-Store-Mono-...
DXC `ul > li > a > img`	/AssetPicker/images/0/0/23/186/1555106/man_U_DXC_reversed...
MUTV `div.dfp-ads__sponsor > a > span > img.light-sponsor-child`	/AssetPicker/images/0/0/7/70/476870/MUTV-DarkBG1515756050...
Snapdragon `ul > li > a > img`	/AssetPicker/images/0/0/20/86/1332850/Snapdragon_edit_1_P...

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

●Document request latency

●Optimize DOM size

●LCP breakdown

●Modern HTTP

●Optimize viewport for mobile

●Minify CSS

●Minify JavaScript

●User Timing marks and measures 5 user timings

●Avoid long main-thread tasks 12 long tasks found

●Avoid non-composited animations 3 animated elements found

●Network Requests

●Network Round Trip Times 170 ms

●Server Backend Latencies 330 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 20 ms

○INP breakdown

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

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
Would you like to subscribe to breaking news notifications? We’ll send officia… `body#siteCorePage > div#root > div.custom-popup`

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.

Best practices

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
VIEW GALLERY `article.mu-item > div.mu-item__info > div.link-btn-white > a`
VIEW GALLERY `article.mu-item > div.mu-item__info > div.link-btn-white > a`

These items highlight common accessibility best practices.

○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

●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

●`[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

●`[aria-hidden="true"]` elements do not contain focusable descendents

●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>`).

●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements

●No element has a `[tabindex]` value greater than 0

●Heading elements appear in a sequentially-descending order

●Document has a main landmark.

●Deprecated ARIA roles were not used

●Identical links have the same purpose.

●Elements with visible text labels have matching accessible names.

○`[accesskey]` values are unique

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○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.

○Skip links are focusable.

○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.

○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.

Best Practices

User Experience

Image display dimensions should match natural aspect ratio. Learn more about image aspect ratio.

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Aspect Ratio (Displayed)	Aspect Ratio (Actual)
Darren Fletcher speaking on Inside Carrington. `div.img-holder > div.lazyload-wrapper > figure.figure-component > img.img-responsive`	/AssetPicker/images/0/0/23/250/1571459/Fletcher_Inside_Ca...	301 x 338 (0.89)	600 x 600 (1.00)
Jim Thwaites with MUTV's Mark Sullivan. `div.img-holder > div.lazyload-wrapper > figure.figure-component > img.img-responsive`	/AssetPicker/images/0/0/23/250/1571429/Jim_Thwaites_Danie...	301 x 338 (0.89)	600 x 600 (1.00)

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 / Warning	Source
SharedStorage	/pagead/managed/js/activeview/m202604200101/ufs_web_displ... line 252, col 234
AttributionReporting	snap.licdn.com/li.lms-analytics/insight.min.js

Errors logged to the console indicate unresolved problems. They can come from network request failures and other browser concerns. Learn more about this errors in console diagnostic audit

Why this matters

Performance issues directly impact user engagement and conversion rates.

Source	Description
www.manutd.com/dist/mu-jss-app/static/js/main.3497de50.js line 1, col 2329579	Error: Minified React error #424; visit https://reactjs.org/docs/error-decoder.html?invariant=424 for the full message or use the non-minified dev environment for full errors and additional helpful warnings. at jl (https://www.manutd.com/dist/mu-jss-app/static/js/main.3497de50.js:2:2329580) at bc (https://www.manutd.com/dist/mu-jss-app/static/js/main.3497de50.js:2:2317254) at gc (https://www.manutd.com/dist/mu-jss-app/static/js/main.3497de50.js:2:2317182) at vc (https://www.manutd.com/dist/mu-jss-app/static/js/main.3497de50.js:2:2317045) at ac (https://www.manutd.com/dist/mu-jss-app/static/js/main.3497de50.js:2:2312149) at w (https://www.manutd.com/dist/mu-jss-app/static/js/main.3497de50.js:2:2465627) at A (https://www.manutd.com/dist/mu-jss-app/static/js/main.3497de50.js:2:2466161) at N.<computed> (https://www.manutd.com/dist/mu-jss-app/static/js/main.3497de50.js:2:2564214) at E (https://www.manutd.com/dist/mu-jss-app/static/js/main.3497de50.js:2:2563983) at MessagePort.I (https://www.manutd.com/dist/mu-jss-app/static/js/main.3497de50.js:2:2564042)
10979490.collect.igodigital.com/collect.js	`Failed to load resource: net::ERR_NAME_NOT_RESOLVED`
www.manutd.com/dist/mu-jss-app/static/js/main.3497de50.js line 1, col 2939383	`Refused to set unsafe header "Accept-Encoding"`

●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

●Serves images with appropriate resolution

●Page has the HTML doctype

●Properly defines charset

●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

100

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.

○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

●robots.txt is valid

●Image elements have `[alt]` attributes

●Document has a valid `hreflang`

●Document has a valid `rel=canonical`