Lighthouse Mobile

· 0 checks — Mobile 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
cdn.optimizely.com/js/17791710119.js	120.0 s	117.5 KiB
tags.tiqcdn.com/utag/unimelb/main/prod/utag.js	300.0 s	71.6 KiB
cdn1.adoberesources.net/alloy/2.25.0/alloy.min.js	3600.0 s	40.4 KiB
tags.tiqcdn.com/utag/unimelb/main/prod/utag.165.js?utv=ut4.53.202604210529	300.0 s	9.4 KiB
tags.tiqcdn.com/utag/unimelb/main/prod/utag.196.js?utv=ut4.53.202603180101	300.0 s	6.6 KiB
tags.tiqcdn.com/utag/unimelb/main/prod/utag.162.js?utv=ut4.53.202604210529	300.0 s	6.1 KiB
tags.tiqcdn.com/utag/unimelb/main/prod/utag.161.js?utv=ut4.53.202604210529	300.0 s	4.7 KiB
tags.tiqcdn.com/utag/unimelb/main/prod/utag.173.js?utv=ut4.53.202604210529	300.0 s	4.7 KiB
/utag/unimelb/main/prod/utag.v.js?a=unimelb/main/20260421...	300.0 s	441 B
cdn3.optimizely.com/js/geo4.js	0.0 ms	321 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:1.70213] map[node:map[boundingRect:map[bottom:1264 height:341 left:0 right:412 top:924 width:412] lhId:page-4-SECTION nodeLabel:STUDY AT MELBOURNE Unlock your potential at Australia’s leading university path:1,HTML,1,BODY,2,DIV,3,DIV,0,DIV,1,UOM-DS-CONTENT-BLOCK-WITH-HEADING,a,#document-fragment,1,SECTION selector:section.uom-ds-content-block-with-heading--secondary snippet:<section class=" uom-ds-content-block-with-heading--secondary uom-ds-content-block-with-he…" data-testid="uom-ds-content-block-with-heading"> type:node] score:0.883354 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:8442 height:144 left:16 right:160 top:8298 width:144] lhId:page-15-IMG nodeLabel:The University of Melbourne logo path:1,HTML,1,BODY,2,DIV,5,UOM-DS-FOOTER,a,#document-fragment,1,FOOTER,4,DIV,0,DIV,7,DIV,4,DIV,1,DIV,0,IMG selector:div.gap-250 > div.md:col-start-3 > div.size-900 > img snippet:<img src="data:image/svg+xml,%3csvg%20xmlns='http://www.w3.org/2000/svg'%20width='14…" alt="The University of Melbourne logo"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:5136 height:584 left:16 right:396 top:4552 width:380] lhId:page-1-UL nodeLabel:Research at Melbourne We are Australia’s leading research-intensive university … path:1,HTML,1,BODY,2,DIV,3,DIV,0,DIV,14,UOM-DS-CONTENT-BLOCK-WITH-HEADING,0,UOM-DS-CARD-ICON-LIST,a,#document-fragment,1,UL selector:ul.uom-ds-card-icon-list snippet:<ul class="uom-ds-card-icon-list" data-testid="uom-ds-card-icon-list"> type:node] score:0.730572 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:8442 height:144 left:16 right:160 top:8298 width:144] lhId:page-15-IMG nodeLabel:The University of Melbourne logo path:1,HTML,1,BODY,2,DIV,5,UOM-DS-FOOTER,a,#document-fragment,1,FOOTER,4,DIV,0,DIV,7,DIV,4,DIV,1,DIV,0,IMG selector:div.gap-250 > div.md:col-start-3 > div.size-900 > img snippet:<img src="data:image/svg+xml,%3csvg%20xmlns='http://www.w3.org/2000/svg'%20width='14…" alt="The University of Melbourne logo"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:646 height:192 left:16 right:396 top:454 width:380] lhId:page-7-H2 nodeLabel:Exceptional education, transformative research path:1,HTML,1,BODY,2,DIV,3,DIV,0,DIV,0,UOM-DS-HOMEPAGE-HERO-BANNER,a,#document-fragment,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,1,H2 selector:div.uom-ds-homepage-hero-banner__text-area > div.uom-ds-homepage-hero-banner__heading-wrapper > div.uom-ds-homepage-hero-banner__heading > h2.uom-ds-homepage-hero-banner__title snippet:<h2 class="uom-ds-homepage-hero-banner__title uom-ds-title-display"> type:node] score:0.088204 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:96 height:96 left:0 right:96 top:0 width:96] lhId:page-16-IMG nodeLabel:The University of Melbourne homepage path:1,HTML,1,BODY,2,DIV,2,DIV,0,UOM-DS-MEGA-MENU,a,#document-fragment,4,DIV,1,UOM-DS-MEGA-MENU-BASE-UI,a,#document-fragment,2,NAV,1,HEADER,2,DIV,0,A,1,IMG selector:header.top-0 > div.flex > a.logo > img.w-auto snippet:<img class="w-auto h-full outline-none" alt="The University of Melbourne homepage" src="data:image/svg+xml,%3csvg%20xmlns='http://www.w3.org/2000/svg'%20fill='non…"> type:node]] map[cause:Web font extra:map[type:url value:https://fonts.gstatic.com/s/sourcesans3/v19/nwpStKy2OAdR1K-IwhWudF-R3w8aZejf5Hc.woff2]] map[cause:Web font extra:map[type:url value:https://fonts.gstatic.com/s/fraunces/v38/6NUu8FyLNQOQZAnv9bYEvDiIdE9Ea92uMiIk_WBq8U_9v0c2Wa0K7iN7hzFUPJH58nhr1Ic7qv8oRcTn.woff2]]] type:subitems]]]

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.

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: a student positioning experimental laser equipment

path: 1,HTML,1,BODY,2,DIV,3,DIV,0,DIV,0,UOM-DS-HOMEPAGE-HERO-BANNER,a,#document-fragment,1,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,DIV,0,DIV,1,DIV,1,IMG

selector: div.uom-ds-homepage-hero-banner__media-wrapper > div.uom-ds-homepage-hero-banner__media > div.uom-ds-image > img.uom-ds-image__img

snippet: <img class="uom-ds-image__img" src="https://www.unimelb.edu.au/__data/assets/image/0005/5446265/241107_UoM_Sci…" alt="a student positioning experimental laser equipment" loading="eager" data-testid="uom-ds-image-img" decoding="async" style="object-fit:cover;width:100%;height:100%;">

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

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
tags.tiqcdn.com/utag/unimelb/main/prod/utag.js	71.6 KiB	1.6 s
cdn.optimizely.com/js/17791710119.js	117.5 KiB	2.0 s

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
Credit: University of Melbourne `a.uom-ds-card-news > div.uom-ds-card-news__image-container > div.uom-ds-image > img.uom-ds-image__img`	/__data/assets/image/0005/5512046/20230223-StudentsAndEdu...	814.9 KiB	775.5 KiB
PhD candidate Elise Mitri and Austin Health patient Nathan, who is able to have… `a.uom-ds-card-news > div.uom-ds-card-news__image-container > div.uom-ds-image > img.uom-ds-image__img`	/__data/assets/image/0004/5519596/Elise-Mitri-Austin-Heal...	471.4 KiB	425.6 KiB
Profile image of Serge da Motta Veiga `a.uom-ds-card-news > div.uom-ds-card-news__image-container > div.uom-ds-image > img.uom-ds-image__img`	www.unimelb.edu.au/__data/assets/image/0007/5519590/Serge-da-Motta-Veiga.jpg	67.0 KiB	23.4 KiB
AI influencer Lil Miquela in front of a highway fast food street sign `a.uom-ds-card-news > div.uom-ds-card-news__image-container > div.uom-ds-image > img.uom-ds-image__img`	www.unimelb.edu.au/__data/assets/image/0004/5519929/Influencer-lil-miquela.webp	52.9 KiB	21.9 KiB
a student positioning experimental laser equipment `div.uom-ds-homepage-hero-banner__media-wrapper > div.uom-ds-homepage-hero-banner__media > div.uom-ds-image > img.uom-ds-image__img`	/__data/assets/image/0005/5446265/241107_UoM_Science_Park...	72.6 KiB	16.1 KiB
a flock of birds in flight `a.uom-ds-card-news > div.uom-ds-card-news__image-container > div.uom-ds-image > img.uom-ds-image__img`	www.unimelb.edu.au/__data/assets/image/0020/5502701/birds.jpg	26.3 KiB	11.1 KiB
A cartoon insect chasing a bird for the front cover of the book What ally needs… `a.uom-ds-card-news > div.uom-ds-card-news__image-container > div.uom-ds-image > img.uom-ds-image__img`	/__data/assets/image/0004/5521477/What-ally-needs-now-boo...	31.1 KiB	8.1 KiB

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

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: 1.1 s

URL	Time Spent
unimelb.edu.au/	1.1 s
www.unimelb.edu.au/	0.0 ms

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
STUDY AT MELBOURNE Unlock your potential at Australia’s leading university `section.uom-ds-content-block-with-heading--secondary`	0.883
Research at Melbourne We are Australia’s leading research-intensive university … `ul.uom-ds-card-icon-list`	0.731
Exceptional education, transformative research `div.uom-ds-homepage-hero-banner__text-area > div.uom-ds-homepage-hero-banner__heading-wrapper > div.uom-ds-homepage-hero-banner__heading > h2.uom-ds-homepage-hero-banner__title`	0.088

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 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: 540 ms 309.1 KiB

URL	Transfer Size	Est Savings
www.googletagmanager.com/gtag/js?id=G-L55G410M0Q&cx=c&gtm=4e64h1	172.8 KiB	70.0 KiB
www.googletagmanager.com/gtag/js?id=G-YE8SEG9T0S&cx=c&gtm=4e64h1	153.5 KiB	67.6 KiB
www.googletagmanager.com/gtag/js?id=G-J6RRCK6F9V	173.6 KiB	67.0 KiB
cdn.optimizely.com/js/17791710119.js	116.9 KiB	51.3 KiB
/ui-core-web-components/v1.0.1/modular/client/carousel.js	64.4 KiB	30.0 KiB
tags.tiqcdn.com/utag/unimelb/main/prod/utag.js	71.2 KiB	23.2 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
/ui-core-web-components/v1.0.1/modular/client/lit-element...	989 ms	735 ms	0.1 ms
www.unimelb.edu.au/	471 ms	3.1 ms	0.8 ms
Unattributable	372 ms	41 ms	0.0 ms
www.googletagmanager.com/gtag/js?id=G-J6RRCK6F9V	370 ms	306 ms	39 ms
www.googletagmanager.com/gtag/js?id=G-L55G410M0Q&cx=c&gtm=4e64h1	312 ms	237 ms	36 ms
/ui-core-web-components/v1.0.1/modular/client/lazy.js	301 ms	296 ms	0.1 ms
cdn.optimizely.com/js/17791710119.js	298 ms	250 ms	30 ms
/ui-core-web-components/v1.0.1/modular/client/mega-menu.js	285 ms	113 ms	1.6 ms
www.googletagmanager.com/gtag/js?id=G-YE8SEG9T0S&cx=c&gtm=4e64h1	246 ms	190 ms	55 ms
tags.tiqcdn.com/utag/unimelb/main/prod/utag.js	225 ms	191 ms	30 ms
cdn1.adoberesources.net/alloy/2.25.0/alloy.min.js	211 ms	199 ms	9.9 ms
/ui-core-web-components/v1.0.1/modular/client/carousel.js	132 ms	32 ms	1.2 ms
tags.tiqcdn.com/utag/unimelb/main/prod/utag.165.js?utv=ut4.53.202604210529	90 ms	82 ms	3.2 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	2.7 s
Other	753 ms
Style & Layout	510 ms
Script Parsing & Compilation	228 ms
Rendering	114 ms
Parse HTML & CSS	92 ms
Garbage Collection	72 ms

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 12.2 KiB

URL	Transfer Size	Est Savings
/ui-core-web-components/v1.0.1/modular/client/carousel.js	64.5 KiB	12.2 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: 0.0 ms 34.3 KiB

URL	Transfer Size	Est Savings
:root { --uom-ds-color-brand-100: #f3f3f6; --uom-ds-color-brand-200: #dddfe7; --uom-ds-color-brand-…	32.0 KiB	24.1 KiB
*, ::before, ::after { --un-rotate: 0; --un-rotate-x: 0; --un-rotate-y: 0; --un-rotate-z: 0; --un-s…	10.2 KiB	10.2 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.

URL	Transfer Size
/__data/assets/image/0005/5512046/20230223-StudentsAndEdu...	815.3 KiB
www.unimelb.edu.au/__data/assets/image/0006/5509950/parkville-station.jpg	722.1 KiB
/__data/assets/image/0004/5519596/Elise-Mitri-Austin-Heal...	471.6 KiB
www.googletagmanager.com/gtag/js?id=G-J6RRCK6F9V	173.9 KiB
www.googletagmanager.com/gtag/js?id=G-L55G410M0Q&cx=c&gtm=4e64h1	172.9 KiB
www.googletagmanager.com/gtag/js?id=G-YE8SEG9T0S&cx=c&gtm=4e64h1	153.5 KiB
cdn.optimizely.com/js/17791710119.js	117.5 KiB
www.unimelb.edu.au/__data/assets/image/0020/5384000/frame-1.jpg	91.2 KiB
/__data/assets/image/0005/5446265/241107_UoM_Science_Park...	72.8 KiB
/__data/assets/image/0005/5446265/241107_UoM_Science_Park...	72.8 KiB

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

●Optimize DOM size

●Font display

●Forced reflow

●LCP breakdown

●Modern HTTP

●Optimize viewport for mobile

●Minify CSS

●User Timing marks and measures 16 user timings

●Avoid long main-thread tasks 12 long tasks found

●Avoid non-composited animations 3 animated elements found

●Image elements have explicit `width` and `height`

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 310 ms

●Server Backend Latencies 330 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 300 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

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
Menu `nav.uom-ds-mega-menu`

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.

Navigation

A value greater than 0 implies an explicit navigation ordering. Although technically valid, this often creates frustrating experiences for users who rely on assistive technologies. Learn more about the `tabindex` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Advanced research and learning in biomedical sciences The University of Melbou… `div.uom-ds-homepage-card-story-list__column-1 > div.uom-ds-homepage-card-story-list__cards > div#card-mUzVTPoI-UhYWVLEYXrq7 > a.uom-ds-homepage-card-story`
Cultural venues at the heart of our community The University of Melbourne is h… `div.uom-ds-homepage-card-story-list__column-2 > div.uom-ds-homepage-card-story-list__cards > div#card-AfV-BXmH5VT5UQCz8PRNE > a.uom-ds-homepage-card-story`

These are opportunities to improve keyboard navigation in your application.

○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]`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

●Form elements have associated labels

●`[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

●`[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

●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

●`<video>` elements contain a `<track>` element with `[kind="captions"]`

●Identical links have the same purpose.

●Elements with visible text labels have matching accessible names.

○`[accesskey]` values are unique

○`button`, `link`, and `menuitem` elements have accessible names

○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.

○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

○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

○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.

100

Best Practices

●Uses HTTPS

●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

●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

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

Descriptive link text helps search engines understand your content. Learn how to make links more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Link destination	Link Text
about.unimelb.edu.au/news-resources?in_c=home_news_cta	Read more
/strengths/advancing-research-2030-excellence-for-impact/...	Read more

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 are crawlable

●Image elements have `[alt]` attributes

●Document has a valid `hreflang`

●Document has a valid `rel=canonical`

○robots.txt is valid