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

Audit breakdown by category with detailed findings.

77

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.

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:0.361759] map[node:map[boundingRect:map[bottom:3940 height:3494 left:0 right:1350 top:446 width:1350] lhId:page-12-DIV nodeLabel:185,014 clipart by 8,231 artists. 21 clipart by 2 artists today. Improve Opencl… path:1,HTML,1,BODY,3,DIV selector:body > div#content snippet:<div class="container-fluid" id="content"> type:node] score:0.187707 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:919 height:337 left:20 right:318 top:583 width:298] lhId:page-0-IMG nodeLabel:Moth path:1,HTML,1,BODY,3,DIV,6,DIV,0,DIV,0,A,0,IMG selector:div.gallery > div.artwork > a > img snippet:<img src="/image/800px/355502" alt="Moth"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:4084 height:144 left:0 right:1350 top:3940 width:1350] lhId:page-1-DIV nodeLabel:For questions, please email support@openclipart.org FAQ Privacy License Members… path:1,HTML,1,BODY,4,DIV selector:body > div#footer snippet:<div id="footer"> type:node] score:0.098249 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:919 height:337 left:20 right:318 top:583 width:298] lhId:page-0-IMG nodeLabel:Moth path:1,HTML,1,BODY,3,DIV,6,DIV,0,DIV,0,A,0,IMG selector:div.gallery > div.artwork > a > img snippet:<img src="/image/800px/355502" alt="Moth"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:1285 height:328 left:350 right:647 top:957 width:298] lhId:page-5-DIV nodeLabel:Kingfisher path:1,HTML,1,BODY,3,DIV,6,DIV,5,DIV selector:body > div#content > div.gallery > div.artwork snippet:<div class="artwork"> type:node] score:0.025813 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:1263 height:284 left:20 right:317 top:979 width:297] lhId:page-17-IMG nodeLabel:Cicada path:1,HTML,1,BODY,3,DIV,6,DIV,4,DIV,0,A,0,IMG selector:div.gallery > div.artwork > a > img snippet:<img src="/image/800px/355498" alt="Cicada"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:1285 height:328 left:350 right:647 top:957 width:298] lhId:page-5-DIV nodeLabel:Kingfisher path:1,HTML,1,BODY,3,DIV,6,DIV,5,DIV selector:body > div#content > div.gallery > div.artwork snippet:<div class="artwork"> type:node] score:0.024479 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:1263 height:284 left:20 right:317 top:979 width:297] lhId:page-17-IMG nodeLabel:Cicada path:1,HTML,1,BODY,3,DIV,6,DIV,4,DIV,0,A,0,IMG selector:div.gallery > div.artwork > a > img snippet:<img src="/image/800px/355498" alt="Cicada"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:919 height:337 left:1009 right:1306 top:583 width:298] lhId:page-3-DIV nodeLabel:Termite path:1,HTML,1,BODY,3,DIV,6,DIV,3,DIV selector:body > div#content > div.gallery > div.artwork snippet:<div class="artwork"> type:node] score:0.015166 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:920 height:338 left:425 right:571 top:582 width:146] lhId:page-16-IMG nodeLabel:Elektro and Sparko path:1,HTML,1,BODY,3,DIV,6,DIV,1,DIV,0,A,0,IMG selector:div.gallery > div.artwork > a > img snippet:<img src="/image/800px/355501" alt="Elektro and Sparko"> type:node]]] type:subitems]]]

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
/s/opensans/v40/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu...100 ms
/s/opensans/v40/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu...60 ms
/s/roboto/v48/KFOMCnqEu92Fr1ME7kSn66aGLdTylUAMQXC89YmC2DP...45 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: Moth
path: 1,HTML,1,BODY,3,DIV,6,DIV,0,DIV,0,A,0,IMG
selector: div.gallery > div.artwork > a > img
snippet: <img src="/image/800px/355502" alt="Moth">

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
openclipart.org/vendor/twbs/bootstrap/dist/js/bootstrap.bundle.min.js27.5 KiB107 ms
openclipart.org/vendor/components/jquery/jquery.slim.min.js28.2 KiB
openclipart.org/vendor/twbs/bootstrap/dist/css/bootstrap.min.css31.3 KiB213 ms
openclipart.org/assets/css/style.css?v=17768981193.3 KiB

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
openclipart.org/image/800px/355476604800.0 s619.6 KiB
openclipart.org/image/800px/355478604800.0 s521.4 KiB
openclipart.org/image/800px/355473604800.0 s362.2 KiB
openclipart.org/image/800px/355480604800.0 s346.4 KiB
openclipart.org/image/800px/355475604800.0 s263.1 KiB
openclipart.org/image/800px/355484604800.0 s221.8 KiB
openclipart.org/image/800px/355474604800.0 s189.9 KiB
openclipart.org/image/800px/355501604800.0 s180.2 KiB
/pagead/managed/js/adsense/m202604170101/show_ads_impl_fy...1209600.0 s177.5 KiB
www.google-analytics.com/analytics.js7200.0 s20.9 KiB
openclipart.org/image/800px/355496604800.0 s138.6 KiB
openclipart.org/image/800px/355485604800.0 s127.9 KiB
openclipart.org/image/800px/355488604800.0 s127.5 KiB
openclipart.org/image/800px/355477604800.0 s127.5 KiB
openclipart.org/image/800px/355491604800.0 s125.1 KiB
openclipart.org/image/800px/355487604800.0 s120.2 KiB
openclipart.org/image/800px/355486604800.0 s117.5 KiB
openclipart.org/image/800px/355495604800.0 s117.1 KiB
openclipart.org/image/800px/355490604800.0 s112.2 KiB
openclipart.org/image/800px/355497604800.0 s109.6 KiB
openclipart.org/image/800px/355489604800.0 s108.3 KiB
openclipart.org/image/800px/355472604800.0 s108.1 KiB
openclipart.org/image/800px/355494604800.0 s99.8 KiB
openclipart.org/image/800px/355482604800.0 s99.7 KiB
openclipart.org/image/800px/355492604800.0 s96.8 KiB
openclipart.org/image/800px/355479604800.0 s95.8 KiB
openclipart.org/image/800px/355493604800.0 s93.4 KiB
openclipart.org/image/800px/355499604800.0 s81.0 KiB
openclipart.org/image/800px/355502604800.0 s72.7 KiB
openclipart.org/image/800px/355498604800.0 s67.9 KiB
openclipart.org/image/800px/355483604800.0 s63.7 KiB
openclipart.org/image/800px/355500604800.0 s54.2 KiB
openclipart.org/image/800px/355471604800.0 s39.8 KiB
openclipart.org/assets/images/openclipart-logo-2019.svg86400.0 s6.2 KiB
openclipart.org/image/800px/355481604800.0 s17.6 KiB

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
Parchment borderless div.gallery > div.artwork > a > img
openclipart.org/image/800px/355476618.6 KiB605.5 KiB
Vintage Parchment Frame - Colour Remix div.gallery > div.artwork > a > img
openclipart.org/image/800px/355478520.5 KiB507.3 KiB
Grill div.gallery > div.artwork > a > img
openclipart.org/image/800px/355473361.4 KiB352.1 KiB
Sketched red love heart black outline and curly tail div.gallery > div.artwork > a > img
openclipart.org/image/800px/355480345.7 KiB329.8 KiB
Abstract Pink Chaos div.gallery > div.artwork > a > img
openclipart.org/image/800px/355475262.5 KiB250.5 KiB
Birth Scene div.gallery > div.artwork > a > img
openclipart.org/image/800px/355484221.2 KiB209.0 KiB
Abstract Yellow Background div.gallery > div.artwork > a > img
openclipart.org/image/800px/355474189.4 KiB177.4 KiB
Elektro and Sparko div.gallery > div.artwork > a > img
openclipart.org/image/800px/355501179.6 KiB173.6 KiB
Finch div.gallery > div.artwork > a > img
openclipart.org/image/800px/355496138.2 KiB128.4 KiB
Earthquake Font div.gallery > div.artwork > a > img
openclipart.org/image/800px/355488127.1 KiB119.1 KiB
Classic Trolley Problem div.gallery > div.artwork > a > img
openclipart.org/image/800px/355477127.0 KiB118.8 KiB
Mochitsuki div.gallery > div.artwork > a > img
openclipart.org/image/800px/355485127.4 KiB111.7 KiB
Cuckoo div.gallery > div.artwork > a > img
openclipart.org/image/800px/355491124.6 KiB109.4 KiB
Fishing in a Small Pond div.gallery > div.artwork > a > img
openclipart.org/image/800px/355486117.0 KiB108.9 KiB
Old Car div.gallery > div.artwork > a > img
openclipart.org/image/800px/355487119.7 KiB107.7 KiB
Man and a Dog div.gallery > div.artwork > a > img
openclipart.org/image/800px/355495116.6 KiB100.6 KiB
Katakana Classic Font div.gallery > div.artwork > a > img
openclipart.org/image/800px/355489107.8 KiB100.3 KiB
Firefighter extinguishing a fire div.gallery > div.artwork > a > img
openclipart.org/image/800px/355472107.7 KiB98.1 KiB
Horse div.gallery > div.artwork > a > img
openclipart.org/image/800px/355490111.7 KiB97.8 KiB
Kingfisher div.gallery > div.artwork > a > img
openclipart.org/image/800px/355497109.1 KiB94.0 KiB
Flag of Delaware div.gallery > div.artwork > a > img
openclipart.org/image/800px/35549499.4 KiB89.8 KiB
Mink div.gallery > div.artwork > a > img
openclipart.org/image/800px/35548299.3 KiB88.9 KiB
Three Wise Monkeys div.gallery > div.artwork > a > img
openclipart.org/image/800px/35547995.3 KiB84.5 KiB
Nightingale div.gallery > div.artwork > a > img
openclipart.org/image/800px/35549296.3 KiB83.0 KiB
Canary div.gallery > div.artwork > a > img
openclipart.org/image/800px/35549393.0 KiB80.1 KiB
Termite div.gallery > div.artwork > a > img
openclipart.org/image/800px/35549980.6 KiB69.4 KiB
Moth div.gallery > div.artwork > a > img
openclipart.org/image/800px/35550272.3 KiB62.3 KiB
Earthquake - Text div.gallery > div.artwork > a > img
openclipart.org/image/800px/35548363.3 KiB60.6 KiB
Cicada div.gallery > div.artwork > a > img
openclipart.org/image/800px/35549867.5 KiB58.2 KiB
Mantis div.gallery > div.artwork > a > img
openclipart.org/image/800px/35550053.8 KiB46.4 KiB
A game of Konigsberg that played by two strong AI, the man stalecheck! div.gallery > div.artwork > a > img
openclipart.org/image/800px/35547139.5 KiB34.0 KiB
Handdrawn heart doodle outline transparent div.gallery > div.artwork > a > img
openclipart.org/image/800px/35548117.2 KiB14.9 KiB

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

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: 0.0 ms 43.6 KiB
URLTransfer SizeEst Savings
openclipart.org/vendor/twbs/bootstrap/dist/css/bootstrap.min.css30.9 KiB29.5 KiB
.fc-consent-root .fc-dialog-container.fc-fullscreen { height: 100% !important; … } …16.3 KiB14.1 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 356.1 KiB
URLTransfer SizeEst Savings
/pagead/managed/js/adsense/m202604170101/show_ads_impl_fy...177.5 KiB147.9 KiB
www.googletagmanager.com/gtag/js?id=G-QLBW7R5K54&cx=c&gtm=4e64k1164.8 KiB67.1 KiB
www.googletagmanager.com/gtag/js?id=UA-7908533-1124.8 KiB63.7 KiB
/i/ca-pub-0352842915813820?href=https%3A%2F%2Fopenclipart...68.8 KiB35.8 KiB
openclipart.org/vendor/twbs/bootstrap/dist/js/bootstrap.bundle.min.js27.1 KiB21.3 KiB
pagead2.googlesyndication.com/pagead/js/adsbygoogle.js54.3 KiB20.3 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
openclipart.org/image/800px/355476619.6 KiB
openclipart.org/image/800px/355478521.4 KiB
openclipart.org/image/800px/355473362.2 KiB
openclipart.org/image/800px/355480346.4 KiB
openclipart.org/image/800px/355475263.1 KiB
openclipart.org/image/800px/355484221.8 KiB
openclipart.org/image/800px/355474189.9 KiB
openclipart.org/image/800px/355501180.2 KiB
/pagead/managed/js/adsense/m202604170101/show_ads_impl_fy...177.5 KiB
www.googletagmanager.com/gtag/js?id=G-QLBW7R5K54&cx=c&gtm=4e64k1164.9 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
Openclipart nav#header > div#logo > a > img
openclipart.org/assets/images/openclipart-logo-2019.svg
Elektro and Sparko div.gallery > div.artwork > a > img
openclipart.org/image/800px/355501
Fishing in a Small Pond div.gallery > div.artwork > a > img
openclipart.org/image/800px/355486
Finch div.gallery > div.artwork > a > img
openclipart.org/image/800px/355496
Parchment borderless div.gallery > div.artwork > a > img
openclipart.org/image/800px/355476
Firefighter extinguishing a fire div.gallery > div.artwork > a > img
openclipart.org/image/800px/355472
Vintage Parchment Frame - Colour Remix div.gallery > div.artwork > a > img
openclipart.org/image/800px/355478
Mink div.gallery > div.artwork > a > img
openclipart.org/image/800px/355482
Horse div.gallery > div.artwork > a > img
openclipart.org/image/800px/355490
Mochitsuki div.gallery > div.artwork > a > img
openclipart.org/image/800px/355485
Moth div.gallery > div.artwork > a > img
openclipart.org/image/800px/355502
Termite div.gallery > div.artwork > a > img
openclipart.org/image/800px/355499
Man and a Dog div.gallery > div.artwork > a > img
openclipart.org/image/800px/355495
Handdrawn heart doodle outline transparent div.gallery > div.artwork > a > img
openclipart.org/image/800px/355481
Sketched red love heart black outline and curly tail div.gallery > div.artwork > a > img
openclipart.org/image/800px/355480
Kingfisher div.gallery > div.artwork > a > img
openclipart.org/image/800px/355497
Canary div.gallery > div.artwork > a > img
openclipart.org/image/800px/355493
Nightingale div.gallery > div.artwork > a > img
openclipart.org/image/800px/355492
Cuckoo div.gallery > div.artwork > a > img
openclipart.org/image/800px/355491
Cicada div.gallery > div.artwork > a > img
openclipart.org/image/800px/355498
Birth Scene div.gallery > div.artwork > a > img
openclipart.org/image/800px/355484
Old Car div.gallery > div.artwork > a > img
openclipart.org/image/800px/355487
Abstract Yellow Background div.gallery > div.artwork > a > img
openclipart.org/image/800px/355474
Abstract Pink Chaos div.gallery > div.artwork > a > img
openclipart.org/image/800px/355475
Three Wise Monkeys div.gallery > div.artwork > a > img
openclipart.org/image/800px/355479
Mantis div.gallery > div.artwork > a > img
openclipart.org/image/800px/355500
Flag of Delaware div.gallery > div.artwork > a > img
openclipart.org/image/800px/355494
A game of Konigsberg that played by two strong AI, the man stalecheck! div.gallery > div.artwork > a > img
openclipart.org/image/800px/355471
Grill div.gallery > div.artwork > a > img
openclipart.org/image/800px/355473
Classic Trolley Problem div.gallery > div.artwork > a > img
openclipart.org/image/800px/355477
Earthquake Font div.gallery > div.artwork > a > img
openclipart.org/image/800px/355488
Katakana Classic Font div.gallery > div.artwork > a > img
openclipart.org/image/800px/355489
Earthquake - Text div.gallery > div.artwork > a > img
openclipart.org/image/800px/355483

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

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.

ElementLayout shift score
185,014 clipart by 8,231 artists. 21 clipart by 2 artists today. Improve Opencl… body > div#content
0.188
For questions, please email support@openclipart.org FAQ Privacy License Members… body > div#footer
0.098
Kingfisher body > div#content > div.gallery > div.artwork
0.026
Kingfisher body > div#content > div.gallery > div.artwork
0.024
Termite body > div#content > div.gallery > div.artwork
0.015
Elektro and Sparko body > div#content > div.gallery > div.artwork
0.009
Welcome This site asks for consent to use your data Personalised advertising a… body > div.fc-consent-root > div.fc-dialog-container
0.001
185,014 clipart by 8,231 artists. 21 clipart by 2 artists today. body > div#content > h2.text-center
0.000
●Document request latency
●Optimize DOM size
●Forced reflow
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Time to Interactive 1.0 s
●Max Potential First Input Delay 50 ms
●Minify CSS
●Minify JavaScript
●User Timing marks and measures 5 user timings
●JavaScript execution time 0.0 s
●Minimizes main-thread work 0.4 s
●Avoid non-composited animations 1 animated element found
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 90 ms
●Server Backend Latencies 260 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 90 ms
○INP breakdown
○Avoid long main-thread tasks
95

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.

Contrast

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Join & Become Member div.ml-auto > div#logged > span > a.btn
Search form#search > div.input-group > div.input-group-append > button#button-search
Random form#search > div.input-group > div.input-group-append > a#button-random
Improve Openclipart by Becoming a Member body > div#content > center > a.btn
Browse Latest Clipart body > div#content > p.text-center > a#browse
Learn more div.fc-dialog-content > div.fc-dialog-scrollable-content > button.fc-faq-header > span.fc-faq-label
List of partners. div.fc-dialog-scrollable-content > div.fc-footer > p > a.fc-vendors-list-dialog

These are opportunities to improve the legibility of your content.

Navigation

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
For questions, please email support@openclipart.org body > div#footer > div#forfooter > h4#support

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]` 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
●Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
●`[aria-hidden="true"]` elements do not contain focusable descendents
●Elements use only permitted ARIA attributes
●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
●Touch targets have sufficient size and spacing.
●Document has a main landmark.
●Deprecated ARIA roles were not used
●Uses ARIA roles only on compatible elements
●Image elements do not have `[alt]` attributes that are redundant text.
●Elements with visible text labels have matching accessible names.
○`[accesskey]` values are unique
○`button`, `link`, and `menuitem` elements have accessible names
○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.
○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.
○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.
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
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`

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