Skip to content
https://elastic.co

Lighthouse Mobile

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

Detailed Report

Audit breakdown by category with detailed findings.

40

Performance

Insights

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

RequestCache TTLTransfer Size
www.elastic.co/_next/static/chunks/pages/_app-06695bc226ea1778.js0.0 ms1.1 MiB
www.elastic.co/_next/static/css/64b76dd98c1ff1ba.css0.0 ms329.5 KiB
elastic-global-nav-assets.s3.us-west-2.amazonaws.com/texture-small.png0.0 ms299.0 KiB
cdn.vidyard.com/thumbnails/dhIsL9-mmyiOW9kMIASDtw/5febc0e94a13a2d723d1aa.gif0.0 ms280.1 KiB
cdn.vidyard.com/thumbnails/dhIsL9-mmyiOW9kMIASDtw/5febc0e94a13a2d723d1aa.gif0.0 ms280.1 KiB
cdn.optimizely.com/js/18132920325.js120.0 s233.9 KiB
cdn.optimizely.com/img/18132920325/afd038c28b604cfab5371be2bed7d258.png0.0 ms155.1 KiB
www.elastic.co/_next/static/chunks/framework-b21a9a9d949ebca4.js0.0 ms136.8 KiB
www.elastic.co/_next/static/chunks/main-c32e734cd4f99b3c.js0.0 ms117.5 KiB
www.elastic.co/_next/static/chunks/60337-e6d3ba7e60b93544.js0.0 ms105.0 KiB
elastic-global-nav-assets.s3.us-west-2.amazonaws.com/bg-observability-labs.png0.0 ms63.7 KiB
www.elastic.co/_next/static/chunks/19357-619908841eb1e42b.js0.0 ms58.3 KiB
www.elastic.co/_next/static/chunks/16153-953bd68e460842a8.js0.0 ms56.3 KiB
www.elastic.co/static-res/fonts/MierB-Demi.woff23600.0 s62.1 KiB
www.elastic.co/static-res/fonts/MierB-Bold.woff23600.0 s61.5 KiB
www.elastic.co/_next/static/chunks/54221-0617b9a3e4533f0f.js0.0 ms46.4 KiB
www.elastic.co/_next/static/chunks/37536-d9aed9b96d1c0394.js0.0 ms34.9 KiB
elastic-global-nav-assets.s3.us-west-2.amazonaws.com/bg-search-labs.png0.0 ms34.5 KiB
www.elastic.co/static-res/fonts/SpaceMono-Regular.ttf3600.0 s42.2 KiB
cdn.vidyard.com/thumbnails/3eqj84w3eMfQ_l-Pp0hcVQ/af91a922acfd2b3a00a4d3.jpg0.0 ms32.3 KiB
cdn.vidyard.com/thumbnails/3eqj84w3eMfQ_l-Pp0hcVQ/af91a922acfd2b3a00a4d3.jpg0.0 ms32.3 KiB
cdn.vidyard.com/thumbnails/hvF_bosHeLNucFhhZYhqhA/9f7668d57f8facd5d3a673.jpg0.0 ms29.7 KiB
cdn.vidyard.com/thumbnails/hvF_bosHeLNucFhhZYhqhA/9f7668d57f8facd5d3a673.jpg0.0 ms29.7 KiB
www.elastic.co/_next/static/chunks/webpack-d88a0ca4c773e87c.js0.0 ms28.9 KiB
elastic-global-nav-assets.s3.us-west-2.amazonaws.com/bg-security-labs.png0.0 ms27.1 KiB
www.elastic.co/_next/static/css/291ea81c578db979.css0.0 ms26.6 KiB
www.elastic.co/_next/static/css/14cd8e5e2d41ae81.css0.0 ms24.6 KiB
cdn.vidyard.com/thumbnails/5CSbT3DDs59Owv3YFFdLTA/5ca0a86060f5e158d83b8c.jpg0.0 ms24.5 KiB
cdn.vidyard.com/thumbnails/5CSbT3DDs59Owv3YFFdLTA/5ca0a86060f5e158d83b8c.jpg0.0 ms24.5 KiB
www.elastic.co/_next/static/css/a860b2cacb671af1.css0.0 ms23.7 KiB
elastic-global-nav-assets.s3.us-west-2.amazonaws.com/circular-pattern.png0.0 ms23.1 KiB
www.elastic.co/_next/static/chunks/36040-cf4feb95fbdd0d7c.js0.0 ms21.7 KiB
www.elastic.co/_next/static/chunks/72489-a2ed9d516fdcc25b.js0.0 ms21.3 KiB
www.elastic.co/_next/static/chunks/pages/product_detail-4805810e1de0922f.js0.0 ms19.5 KiB
www.elastic.co/_next/static/chunks/70085-9f83d6e664f3beb1.js0.0 ms18.6 KiB
www.elastic.co/_next/static/chunks/42448-cb23bf36c262b04e.js0.0 ms18.5 KiB
www.elastic.co/static-res/js/prettify.js3600.0 s20.2 KiB
elastic-global-nav-assets.s3.us-west-2.amazonaws.com/logo-booking.svg0.0 ms15.7 KiB
www.elastic.co/_next/static/chunks/93684-4bd520577b5d6a1a.js0.0 ms14.6 KiB
elastic-global-nav-assets.s3.us-west-2.amazonaws.com/logo-observability-labs.svg0.0 ms13.9 KiB
www.elastic.co/_next/static/chunks/91478-b16da48d58949eb9.js0.0 ms13.3 KiB
elastic-global-nav-assets.s3.us-west-2.amazonaws.com/logo-security-labs.svg0.0 ms12.1 KiB
elastic-global-nav-assets.s3.us-west-2.amazonaws.com/logo-search-labs.svg0.0 ms11.8 KiB
www.elastic.co/_next/static/css/d25110ffa5641bb9.css0.0 ms11.0 KiB
www.elastic.co/_next/static/7rk7qjWrzr1FZcEtDx0cB/_buildManifest.js0.0 ms8.8 KiB
elastic-global-nav-assets.s3.us-west-2.amazonaws.com/logo-comcast.svg0.0 ms7.2 KiB
elastic-global-nav-assets.s3.us-west-2.amazonaws.com/logo-cisco.svg0.0 ms5.0 KiB
elastic-global-nav-assets.s3.us-west-2.amazonaws.com/logo-pepsico.svg0.0 ms4.6 KiB
elastic-global-nav-assets.s3.us-west-2.amazonaws.com/logo-docusign.svg0.0 ms4.0 KiB
elastic-global-nav-assets.s3.us-west-2.amazonaws.com/logo-uol.svg0.0 ms1.9 KiB
cs.iubenda.com/cookie-solution/confs/js/67332803.js3600.0 s1.6 KiB
www.elastic.co/static-res/styles/css/vendors/prettify.css3600.0 s1.2 KiB
www.elastic.co/static-res/images/svg/icon-statistics-arrow-down.svg3600.0 s722 B
cdn.vidyard.com/thumbnails/hvF_bosHeLNucFhhZYhqhA/9f7668d57f8facd5d3a673.jpg0.0 ms398 B
cdn.vidyard.com/thumbnails/dhIsL9-mmyiOW9kMIASDtw/5febc0e94a13a2d723d1aa.gif0.0 ms395 B
cdn.vidyard.com/thumbnails/5CSbT3DDs59Owv3YFFdLTA/5ca0a86060f5e158d83b8c.jpg0.0 ms394 B
cdn.vidyard.com/thumbnails/3eqj84w3eMfQ_l-Pp0hcVQ/af91a922acfd2b3a00a4d3.jpg0.0 ms393 B
cdn3.optimizely.com/js/geo4.js0.0 ms305 B
www.elastic.co/_next/static/7rk7qjWrzr1FZcEtDx0cB/_ssgManifest.js0.0 ms278 B

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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:46.142 source:map[column:131178 line:1 type:source-location url:https://www.elastic.co/_next/static/chunks/framework-b21a9a9d949ebca4.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:40.44 source:map[column:749846 line:0 type:source-location url:https://www.elastic.co/_next/static/chunks/pages/_app-06695bc226ea1778.js urlProvider:network]] map[reflowTime:3.669 source:map[column:87302 line:0 type:source-location url:https://www.elastic.co/_next/static/chunks/60337-e6d3ba7e60b93544.js urlProvider:network]] map[reflowTime:0.412 source:map[column:55410 line:0 type:source-location url:https://www.elastic.co/_next/static/chunks/60337-e6d3ba7e60b93544.js urlProvider:network]] map[reflowTime:0.079 source:map[column:25838 line:0 type:source-location url:https://www.elastic.co/_next/static/chunks/60337-e6d3ba7e60b93544.js urlProvider:network]] map[reflowTime:0.67 source:map[column:86188 line:0 type:source-location url:https://www.elastic.co/_next/static/chunks/pages/_app-06695bc226ea1778.js urlProvider:network]] map[reflowTime:0.689 source:map[column:534951 line:0 type:source-location url:https://www.elastic.co/_next/static/chunks/pages/_app-06695bc226ea1778.js urlProvider:network]] map[reflowTime:0.143 source:map[column:18140 line:0 type:source-location url:https://www.elastic.co/_next/static/chunks/42448-cb23bf36c262b04e.js urlProvider:network]] map[reflowTime:0.04 source:map[column:44838 line:0 type:source-location url:https://www.elastic.co/_next/static/chunks/16153-953bd68e460842a8.js urlProvider:network]] map[reflowTime:19.524 source:map[type:text value:[unattributed]]]]

Each subpart has specific improvement strategies. Ideally, most of the LCP time should be spent on loading the resources, not within delays.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:label label:Subpart valueType:text] map[key:duration label:Duration valueType:ms]]
items: [map[duration:233.545 label:Time to first byte subpart:timeToFirstByte] map[duration:21.378 label:Resource load delay subpart:resourceLoadDelay] map[duration:503.652 label:Resource load duration subpart:resourceLoadDuration] map[duration:2668.882 label:Element render delay subpart:elementRenderDelay]]
lhId: page-0-IMG
nodeLabel: div.swiper-slide > a.Card_card__CkF2v > div.Card_card__inner__iEHQx > img.Card_card__image__ECR0l
path: 1,HTML,1,BODY,0,DIV,3,MAIN,0,DIV,0,SECTION,0,DIV,0,DIV,0,DIV,3,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,A,0,DIV,0,IMG
selector: div.swiper-slide > a.Card_card__CkF2v > div.Card_card__inner__iEHQx > img.Card_card__image__ECR0l
snippet: <img class="Card_card__image__ECR0l" src="https://static-www.elastic.co/v3/assets/bltefdd0b53724fa2ce/blt01287e6c22f…" alt="">

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: div.swiper-slide > a.Card_card__CkF2v > div.Card_card__inner__iEHQx > img.Card_card__image__ECR0l
path: 1,HTML,1,BODY,0,DIV,3,MAIN,0,DIV,0,SECTION,0,DIV,0,DIV,0,DIV,3,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,A,0,DIV,0,IMG
selector: div.swiper-slide > a.Card_card__CkF2v > div.Card_card__inner__iEHQx > img.Card_card__image__ECR0l
snippet: <img class="Card_card__image__ECR0l" src="https://static-www.elastic.co/v3/assets/bltefdd0b53724fa2ce/blt01287e6c22f…" alt="">

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.

More than 4 preconnect connections were found. These should be used sparingly and only to the most important origins.
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.

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
ul.card-deck-items > li.jsx-38863284 > div.jsx-38863284 > img.jsx-38863284 ul.card-deck-items > li.jsx-38863284 > div.jsx-38863284 > img.jsx-38863284
/v3/assets/bltefdd0b53724fa2ce/blt2619aaed40aa594c/688be4...184.0 KiB180.8 KiB
ul.card-deck-items > li.jsx-38863284 > div.jsx-38863284 > img.jsx-38863284 ul.card-deck-items > li.jsx-38863284 > div.jsx-38863284 > img.jsx-38863284
/v3/assets/bltefdd0b53724fa2ce/blt4e5f2bf8fa20b4e8/688be4...183.1 KiB178.3 KiB
ul.card-deck-items > li.jsx-38863284 > div.jsx-38863284 > img.jsx-38863284 ul.card-deck-items > li.jsx-38863284 > div.jsx-38863284 > img.jsx-38863284
/v3/assets/bltefdd0b53724fa2ce/blt882c00911d2dad16/688be4...117.4 KiB112.6 KiB
Comcast logo div.LogoBar_logoBar12Column__Zt3ix > div.logo > a > img.img-fluid
/v3/assets/bltefdd0b53724fa2ce/blt57b8c92f292ac258/69dd40...10.5 KiB8.9 KiB

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

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: 803 ms
URLTime Spent
elastic.co/803 ms
www.elastic.co/0.0 ms

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

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: 150 ms 12.1 KiB
URLTransfer SizeEst Savings
www.elastic.co/static-res/js/prettify.js20.0 KiB12.1 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.

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.

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.

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
Script Evaluation3.7 s
Other1.2 s
Style & Layout702 ms
Script Parsing & Compilation423 ms
Rendering274 ms
Parse HTML & CSS114 ms
Garbage Collection79 ms

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
IBM logo div.LogoBar_logoBar12Column__Zt3ix > div.logo > a > img.img-fluid
/v3/assets/bltefdd0b53724fa2ce/blt140025f37b5c8b6b/69dd40...
ul.card-deck-items > li.jsx-38863284 > div.jsx-38863284 > img.jsx-38863284 ul.card-deck-items > li.jsx-38863284 > div.jsx-38863284 > img.jsx-38863284
/v3/assets/bltefdd0b53724fa2ce/blt4e5f2bf8fa20b4e8/688be4...
ul.card-deck-items > li.jsx-38863284 > div.jsx-38863284 > img.jsx-38863284 ul.card-deck-items > li.jsx-38863284 > div.jsx-38863284 > img.jsx-38863284
/v3/assets/bltefdd0b53724fa2ce/blt2619aaed40aa594c/688be4...
ul.card-deck-items > li.jsx-38863284 > div.jsx-38863284 > img.jsx-38863284 ul.card-deck-items > li.jsx-38863284 > div.jsx-38863284 > img.jsx-38863284
/v3/assets/bltefdd0b53724fa2ce/blt882c00911d2dad16/688be4...
Pepsi logo div.LogoBar_logoBar12Column__Zt3ix > div.logo > a > img.img-fluid
/v3/assets/bltefdd0b53724fa2ce/blt527201268b46f065/69dd3d...
Comcast logo div.LogoBar_logoBar12Column__Zt3ix > div.logo > a > img.img-fluid
/v3/assets/bltefdd0b53724fa2ce/blt57b8c92f292ac258/69dd40...
Docusign logo div.LogoBar_logoBar12Column__Zt3ix > div.logo > a > img.img-fluid
/v3/assets/bltefdd0b53724fa2ce/blt734c6ee33f1507cb/68b739...
Land Rover logo div.LogoBar_logoBar12Column__Zt3ix > div.logo > a > img.img-fluid
/v3/assets/bltefdd0b53724fa2ce/blt1c1ba8a61aff9e96/67635d...
Elastic The Search AI Company div > div.Footer_logo__oqoeK > a > img
/v3/assets/bltefdd0b53724fa2ce/bltf8467a95eaa27e4a/6638d7...
arrow div.illustration-icon-grid-item-content > div.statistics-title-container > div.arrow-down > img
www.elastic.co/static-res/images/svg/icon-statistics-arrow-down.svg
Elastic's GitHub page ul.Footer_socialIconList__Hgtx5 > li.GitHub > a > img
/v3/assets/bltefdd0b53724fa2ce/blt6ef5841a45696d80/64ca2a...
Elastic's LinkedIn page ul.Footer_socialIconList__Hgtx5 > li.LinkedIn > a#footer_linkedin > img
/v3/assets/bltefdd0b53724fa2ce/blte7cfb1a091901ce1/5eb00c...
Elastic's YouTube page ul.Footer_socialIconList__Hgtx5 > li.YouTube > a#footer_youtube > img
/v3/assets/bltefdd0b53724fa2ce/blt7c28b18be98b1af8/5eb00c...
Elastic's Twitter page ul.Footer_socialIconList__Hgtx5 > li.Twitter > a#footer_twitter > img
/v3/assets/bltefdd0b53724fa2ce/blt341fed86979a9fbb/5eb00c...
Elastic's Facebook page ul.Footer_socialIconList__Hgtx5 > li.Facebook > a#footer_facebook > img
/v3/assets/bltefdd0b53724fa2ce/blt75566c5278ad68da/5eb00c...

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

●Layout shift culprits
●Optimize DOM size
●Optimize viewport for mobile
●Minify CSS
●User Timing marks and measures 5 user timings
●Avoid long main-thread tasks 19 long tasks found
●Avoid non-composited animations 1 animated element found
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 140 ms
●Server Backend Latencies 170 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 160 ms
○INP breakdown
○Avoid large layout shifts
92

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

When a button doesn't have an accessible name, screen readers announce it as "button", making it unusable for users who rely on screen readers. Learn how to make buttons more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.Container_container__CBaVM > div.Navigation_navigation-actions__0Xm94 > div.SearchInput_search-input__yoymL > button.SearchInput_search-input-button__Yg0h2 div.Container_container__CBaVM > div.Navigation_navigation-actions__0Xm94 > div.SearchInput_search-input__yoymL > button.SearchInput_search-input-button__Yg0h2
div.Container_container__CBaVM > div.Navigation_navigation-actions__0Xm94 > div > button.Hamburger_hamburger__pTXMy div.Container_container__CBaVM > div.Navigation_navigation-actions__0Xm94 > div > button.Hamburger_hamburger__pTXMy

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.

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
Go to slide 1 div.Carousel_carousel__agjUp > div.Carousel_carousel-controls__qHG1F > div.swiper-pagination > span.swiper-pagination-bullet
Go to slide 2 div.Carousel_carousel__agjUp > div.Carousel_carousel-controls__qHG1F > div.swiper-pagination > span.swiper-pagination-bullet
Go to slide 3 div.Carousel_carousel__agjUp > div.Carousel_carousel-controls__qHG1F > div.swiper-pagination > span.swiper-pagination-bullet
Go to slide 4 div.Carousel_carousel__agjUp > div.Carousel_carousel-controls__qHG1F > div.swiper-pagination > span.swiper-pagination-bullet
Go to slide 5 div.Carousel_carousel__agjUp > div.Carousel_carousel-controls__qHG1F > div.swiper-pagination > span.swiper-pagination-bullet
Go to slide 6 div.Carousel_carousel__agjUp > div.Carousel_carousel-controls__qHG1F > div.swiper-pagination > span.swiper-pagination-bullet

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
●`[role]` values are valid
●`[aria-*]` attributes have valid values
●`[aria-*]` attributes are valid and not misspelled
●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.
●`button`, `link`, and `menuitem` elements have accessible names
●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
●Background and foreground colors have a sufficient contrast ratio
●Document has a `<title>` element
●`<frame>` or `<iframe>` elements have a title
●`<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
●Skip links are focusable.
●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 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
○`<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.
○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.
100

Best Practices

General

●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 DOM-based XSS with Trusted Types
●Detected JavaScript libraries
○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`

Send Feedback