https://biography.com
Lighthouse Desktop
· 0 checks — Desktop Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.SCORE
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Detailed Report
Audit breakdown by category with detailed findings.
88
Performance
Insights
Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.
Why this matters
Performance issues directly impact user engagement and conversion rates.
Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling
Why this matters
Performance issues directly impact user engagement and conversion rates.
3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.
Why this matters
Performance issues directly impact user engagement and conversion rates.
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:0.138236] map[node:map[boundingRect:map[bottom:2221 height:1245 left:0 right:1350 top:976 width:1350] lhId:page-17-SECTION nodeLabel:Everything We Know About Gilgo Beach Killer Rex Heuermann’s Life in Prison Toda… path:1,HTML,1,BODY,1,DIV,7,MAIN,3,SECTION selector:body > div#__next > main#main-content > section.css-1u6e6n snippet:<section data-lazy-id="P0-13" class="css-1u6e6n eq9yxe30" data-hydrated="1"> type:node] score:0.077963 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:915 height:598 left:76 right:675 top:317 width:599] lhId:page-0-IMG nodeLabel:key art for “#SKYKING” documentary about richard russell showing man in air tra… path:1,HTML,1,BODY,1,DIV,7,MAIN,2,SECTION,0,A,0,DIV,0,DIV,0,IMG selector:a.ee4ms354 > div.css-79elbk > div.css-126fzvm > img.css-0 snippet:<img alt="key art for “#SKYKING” documentary about richard russell showing man in ai…" fetchpriority="high" width="3000" height="1688" decoding="async" data-nimg="1" style="color:transparent;width:100%;height:auto;" sizes="100vw" srcset="https://hips.hearstapps.com/hmg-prod/images/c32a4ca8-2429-46c3-afd5-a5fa72…" src="https://hips.hearstapps.com/hmg-prod/images/c32a4ca8-2429-46c3-afd5-a5fa72…" class="css-0 e1g79fud0"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:9528 height:9373 left:0 right:1350 top:155 width:1350] lhId:page-19-MAIN nodeLabel:Who Was Richard Russell of #SkyKing? Why the Airline Worker Stole a Plane and F… path:1,HTML,1,BODY,1,DIV,7,MAIN selector:body > div#__next > main#main-content snippet:<main id="main-content" class="css-rk6tbh ewq0ot91"> type:node] score:0.060273 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:915 height:598 left:76 right:675 top:317 width:599] lhId:page-0-IMG nodeLabel:key art for “#SKYKING” documentary about richard russell showing man in air tra… path:1,HTML,1,BODY,1,DIV,7,MAIN,2,SECTION,0,A,0,DIV,0,DIV,0,IMG selector:a.ee4ms354 > div.css-79elbk > div.css-126fzvm > img.css-0 snippet:<img alt="key art for “#SKYKING” documentary about richard russell showing man in ai…" fetchpriority="high" width="3000" height="1688" decoding="async" data-nimg="1" style="color:transparent;width:100%;height:auto;" sizes="100vw" srcset="https://hips.hearstapps.com/hmg-prod/images/c32a4ca8-2429-46c3-afd5-a5fa72…" src="https://hips.hearstapps.com/hmg-prod/images/c32a4ca8-2429-46c3-afd5-a5fa72…" class="css-0 e1g79fud0"> type:node]]] type:subitems]]]
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:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:91.621 source:map[type:text value:[unattributed]]]]
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 | |
|---|---|---|---|
key art for “#SKYKING” documentary about richard russell showing man in air tra… a.ee4ms354 > div.css-79elbk > div.css-126fzvm > img.css-0 | /hmg-prod/images/c32a4ca8-2429-46c3-afd5-a5fa72dfa522.jpg... | 204.1 KiB | 155.5 KiB |
Lizzie Andrew Borden a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | /hmg-prod/images/40ccba07-f28b-4dac-afe5-be7d724eb337.jpe... | 50.2 KiB | 44.1 KiB |
this undated photo from wise county sheriff's office shows tanner lynn horner h… a.ee4ms354 > div.css-79elbk > div.css-126fzvm > img.css-0 | /hmg-prod/images/94ec1462-9233-4ae8-9766-48720372cf7f.jpg... | 36.8 KiB | 30.0 KiB |
2024 Vanity Fair Oscar Party Hosted By Radhika Jones - Arrivals div.css-79elbk > div.__resp-container > picture.css-0 > img | /hmg-prod/images/a4336802-c423-4c0c-b7b6-473876efd8f1.jpe... | 55.9 KiB | 28.5 KiB |
dr j allen hynek holding pipe and ufo report, flying saucers a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img.css-0 | /hmg-prod/images/j-allen-hynek-ufos-660b09e8ef620.jpg?cro... | 20.2 KiB | 17.9 KiB |
Fundamentalist Church of Jesus Christ of Latter-Day Saints, FLDS Church, Mormon… a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | /hmg-prod/images/2859f6e7-be38-424c-b0b6-dd663aab045c.jpe... | 21.5 KiB | 15.4 KiB |
a group of men posing for a photo a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img.css-0 | /hmg-prod/images/bio-famous-inventors-65e20470ce112.jpg?c... | 17.9 KiB | 15.3 KiB |
Former 'American Idol' contestant Caleb Flynn is accused of killing his wife As… a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | /hmg-prod/images/3f264ab1-1c69-44db-b96b-8f39b406beff.jpe... | 18.6 KiB | 13.2 KiB |
Former FLDS prophet Warren Jeffs at a court appearance a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | /hmg-prod/images/e53317d3-648e-4757-b84b-e88d0a182276.jpe... | 14.2 KiB | 10.1 KiB |
samuel bateman from the netflix docuseries trust me the false prophet a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | /hmg-prod/images/b4dda222-5c5f-4075-8694-1586b34aa53d.png... | 13.3 KiB | 9.5 KiB |
police mugshot of gilgo beach murder suspect rex heuermann a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | /hmg-prod/images/in-this-handout-provided-by-the-suffolk-... | 12.1 KiB | 8.6 KiB |
miley cyrus looks at the camera, she wears a pink and black sleeveless dress a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | /hmg-prod/images/miley-cyrus-attends-the-versace-fw23-sho... | 20.4 KiB | 8.2 KiB |
Nassau Sailing a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | /hmg-prod/images/3cd190af-dfc4-4234-aa02-7eee48b977d6.jpe... | 10.1 KiB | 7.2 KiB |
a man in a black suit jacket white collared shirt and red tie walks through a d… a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | /hmg-prod/images/alleged-gilgo-serial-killer-rex-heuerman... | 9.9 KiB | 7.0 KiB |
Lucille Ball a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | /hmg-prod/images/lucille-ball-gettyimages-3135193.jpg?cro... | 16.6 KiB | 6.7 KiB |
Dakota Mortensen attends the Los Angeles Premiere and FYC Event of Hulu's "The … a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | /hmg-prod/images/cfd6fb04-9805-4878-8b3e-446d831a5212.jpe... | 14.7 KiB | 5.9 KiB |
Photo showing Dayton Webber, a former pro cornhole player arrested and charged … a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | /hmg-prod/images/dae03c98-d249-4158-9b01-15b8d48bb13d.jpe... | 14.0 KiB | 5.6 KiB |
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
value: No additional origins are good candidates for preconnecting
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 |
|---|---|---|
| nexus.ensighten.com/hearst/mag/Bootstrap.js | 300.0 s | 18.6 KiB |
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.
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: 245 ms
| URL | Time Spent |
|---|---|
| biography.com/ | 245 ms |
| www.biography.com/ | 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 |
|---|---|
Everything We Know About Gilgo Beach Killer Rex Heuermann’s Life in Prison Toda… body > div#__next > main#main-content > section.css-1u6e6n | 0.078 |
Who Was Richard Russell of #SkyKing? Why the Airline Worker Stole a Plane and F… body > div#__next > main#main-content | 0.060 |
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
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: 160 ms 364.1 KiB
| URL | Transfer Size | Est Savings |
|---|---|---|
| /pagead/managed/js/gpt/m202604160201/pubads_impl.js | 187.7 KiB | 140.4 KiB |
| www.biography.com/_assets/moapt/2.437.0/moapt-bidder-pb-hdm.10.23.0.js | 107.1 KiB | 85.0 KiB |
| www.biography.com/_assets/moapt/2.437.0/moapt-bundle-hdm.js | 57.1 KiB | 47.3 KiB |
| www.biography.com/_assets/moapt/2.437.0/moapt-data.js | 52.8 KiB | 47.2 KiB |
| /_assets/fre/scopes/hdm/_next/static/chunks/main-d2f686aa... | 41.3 KiB | 23.1 KiB |
| /_assets/fre/scopes/hdm/_next/static/chunks/74011-55fecbe... | 42.4 KiB | 21.0 KiB |
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 |
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 | |
|---|---|
olivia rodrigo looks at the camera in a sequin dress a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | /hmg-prod/images/olivia-rodrigo-attends-the-2023-vanity-f... |
a woman poses for a photo in front of a red background, she wears a black sequi… a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | /hmg-prod/images/sydney-sweeney-attends-the-armani-beauty... |
Lucille Ball a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | /hmg-prod/images/lucille-ball-gettyimages-3135193.jpg?cro... |
Dakota Mortensen attends the Los Angeles Premiere and FYC Event of Hulu's "The … a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | /hmg-prod/images/cfd6fb04-9805-4878-8b3e-446d831a5212.jpe... |
Photo showing Dayton Webber, a former pro cornhole player arrested and charged … a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | /hmg-prod/images/dae03c98-d249-4158-9b01-15b8d48bb13d.jpe... |
Former 'American Idol' contestant Caleb Flynn is accused of killing his wife As… a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | /hmg-prod/images/3f264ab1-1c69-44db-b96b-8f39b406beff.jpe... |
Nassau Sailing a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | /hmg-prod/images/3cd190af-dfc4-4234-aa02-7eee48b977d6.jpe... |
Former FLDS prophet Warren Jeffs at a court appearance a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | /hmg-prod/images/e53317d3-648e-4757-b84b-e88d0a182276.jpe... |
samuel bateman from the netflix docuseries trust me the false prophet a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | /hmg-prod/images/b4dda222-5c5f-4075-8694-1586b34aa53d.png... |
Fundamentalist Church of Jesus Christ of Latter-Day Saints, FLDS Church, Mormon… a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | /hmg-prod/images/2859f6e7-be38-424c-b0b6-dd663aab045c.jpe... |
Rex Heuermann pleads guilty in Gilgo Beach serial killings case a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | /hmg-prod/images/b4df56d2-a28c-4f51-9934-e0228c4df18a.jpe... |
Jaafar Jackson attends the "Michael" Global Fan Premiere at Uber Eats Music Hal… a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | /hmg-prod/images/f08876af-5cd9-4e5d-a2a9-fa089375c218.jpe... |
Jackson Family And Global Live Events Press Conference a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | /hmg-prod/images/e3f86d25-1c20-4f3f-9dac-7dc80fabb29f.jpe... |
Katherine Johnson At NASA Langley Research Center a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | /hmg-prod/images/19b6b0a1-f6e7-4eb7-99f6-9fd0d7ebe78a.jpe... |
Vatican Pool Images 2026 a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | /hmg-prod/images/739d0c63-c67d-486f-947e-d0526cd04287.jpe... |
moriah wilson and mother karen wilson netflix the truth and tragedy of moriah w… a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | /hmg-prod/images/a481989d-e475-4cab-874b-7bbc1943b748.jpg... |
caitlin cash in the truth and tragedy of moriah wilson cr courtesy of netflix ©… a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | /hmg-prod/images/021aaecb-ddf2-4778-af7e-1c685294192b.jpg... |
Three individuals standing in a grassy field under a cloudy sky a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | /hmg-prod/images/7fd7aa87-dd71-44cf-9453-ff3afde2f13e.jpg... |
miley cyrus looks at the camera, she wears a pink and black sleeveless dress a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | /hmg-prod/images/miley-cyrus-attends-the-versace-fw23-sho... |
Lizzie Andrew Borden a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | /hmg-prod/images/40ccba07-f28b-4dac-afe5-be7d724eb337.jpe... |
a man in a black suit jacket white collared shirt and red tie walks through a d… a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | /hmg-prod/images/alleged-gilgo-serial-killer-rex-heuerman... |
taylor frankie paul poses in black dress a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | /hmg-prod/images/the-industrys-biggest-reality-fans-and-s... |
a man in a top hat with identity obscured, mitre square in london, map of white… a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | /hmg-prod/images/jack-the-ripper-identity-65aaa8f8af93d.j... |
police mugshot of gilgo beach murder suspect rex heuermann a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | /hmg-prod/images/in-this-handout-provided-by-the-suffolk-... |
Logo div.css-mt5vg7 > a.css-8aa961 > div.css-zcysxb > img.css-7flfmd | /_assets/design-tokens/biography/static/images/logos/logo... |
Logo div.css-1ss7lvu > div.css-iz4391 > a.css-82acjr > img.css-0 | /_assets/design-tokens/biography/static/images/logos/logo... |
Martin V Acuna a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | |
Nifty Network a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | |
Former NBA player Lamar Odom appears in a new Netflix 'Untold' documentary a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | |
Serena Williams attends The Prelude to The Paris Games 2024 on July 25, 2024 in… a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | |
Lainey Wilson and Devlin “Duck” Hodges at 59th Annual Country Music Association… a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | |
michael jackson file photos by kevin mazur a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | |
phil collins sitting to the right of his ex wife andrea bertorelli and their da… a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | |
Megan Moroney a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | |
bong and marge a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | |
amelia earhart looks at the camera with a small smile on her face, she wears a … a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | |
Bronze statue of a woman holding a child. a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | |
amelia earhart a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | |
dr. lise meitner a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | |
scientist marie curie sitting in a chair a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | |
mae jemison smiles at the camera while standing in front of a photo background … a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | |
portrait photograph of george washington carver looking to his left, he wears a… a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | |
Shirley Chisholm speaks at a podium at the Democratic National Convention, Miam… a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | |
kamala harris campaigns for president in raleigh, north carolina a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | |
file photo ronald reagan turns 93 a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | |
braddock's defeat a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | |
BRITAIN-ENERGY-CLIMATE-DEMO a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | |
illustration of first women's rights convention in 1848 a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | |
getty images portrait studio presented by imdb and imdbpro at the intercontinen… a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img | |
A historical illustration depicting a person speaking passionately to an audien… a.ee4ms354 > div.css-79elbk > div.css-ftsoqv > img |
More information about the performance of your application. These numbers don't directly affect the Performance score.
●Max Potential First Input Delay 120 ms
●Optimize DOM size
●LCP breakdown
●LCP request discovery
●Modern HTTP
●Render blocking requests
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●Reduce unused CSS
●Avoids enormous network payloads Total size was 2,217 KiB
●User Timing marks and measures 24 user timings
●JavaScript execution time 0.5 s
●Minimizes main-thread work 1.3 s
●Avoid long main-thread tasks 5 long tasks found
●Network Requests
●Network Round Trip Times 20 ms
●Server Backend Latencies 120 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 0 ms
○INP breakdown
○Avoid non-composited animations
100
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.
○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
●`[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 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.
●Heading elements appear in a sequentially-descending order
●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.
○`[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 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
○Links are distinguishable without relying on color.
○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.
○Elements with visible text labels have matching accessible names.
○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 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`