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
mc.yandex.ru/metrika/tag.js	3600.0 s	85.4 KiB
privacy-cs.mail.ru/static/sync-loader.js	600.0 s	21.9 KiB
mc.yandex.com/metrika/advert.gif?t=gdpr(14)ti(4)	3600.0 s	375 B
/sync_cookie_image_decide_secondary?cid=153166&scid=e783f...	0.0 ms	79 B
/sync_cookie_image_decide?cid=153166&scid=04d9531d-1996-c...	0.0 ms	67 B

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

items: [map[node:map[type:text value:Total] score:0.103112] map[node:map[boundingRect:map[bottom:20752 height:20321 left:0 right:412 top:431 width:412] lhId:page-1-MAIN nodeLabel:Атака Израиля и США на Иран Весь сюжет Главные новости Фигуранты дела Popcorn B… path:1,HTML,1,BODY,38,MAIN selector:body > main snippet:<main> type:node] score:0.099882] map[node:map[boundingRect:map[bottom:340 height:40 left:69 right:343 top:300 width:275] lhId:page-8-UL nodeLabel:$ 74,58 € 87,76 ¥ 10,95 IMOEX 2757,70 path:1,HTML,1,BODY,36,DIV,0,DIV,0,DIV,0,DIV,1,UL,0,LI,0,UL selector:div.actual__body > ul.actual__list > li.actual__item > ul.actual__money snippet:<ul class="actual__money slider-actual-item"> type:node] score:0.001627 subItems:map[items:[map[cause:Web font extra:map[type:url value:https://iv.kommersant.ru/ContentFlex/ajax/fonts/noto-sans/NotoSans-SemiCondensed.woff2?1]] map[cause:Web font extra:map[type:url value:https://iv.kommersant.ru/ContentFlex/ajax/fonts/noto-sans/NotoSans-SemiCondensedSemiBold.woff2?1]]] type:subitems]] map[node:map[boundingRect:map[bottom:300 height:50 left:154 right:274 top:250 width:120] lhId:page-6-IMG nodeLabel:div.main_header__important_logo > div#js-commercial-header > a > img.rocket_man__rocket path:1,HTML,1,BODY,33,HEADER,0,DIV,0,DIV,1,DIV,1,DIV,0,A,1,IMG selector:div.main_header__important_logo > div#js-commercial-header > a > img.rocket_man__rocket snippet:<img src="https://iv.kommersant.ru/CorpImages/MainPage/486def65-7ab7-44b1-a7f4-f3a13…" aria-hidden="true" class="rocket_man__rocket hide_desktop" alt=""> type:node] score:0.001603]]

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.

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:44.744 source:map[type:text value:[unattributed]]] map[reflowTime:0.748 source:map[column:101 line:33 type:source-location url:https://top-fwz1.mail.ru/js/code.js urlProvider:network]] map[reflowTime:0.6 source:map[column:80765 line:0 type:source-location url:https://iv.kommersant.ru/ContentFlex/Redesign2020/kom2021.commonJS.js?2604171836405513 urlProvider:network]] map[reflowTime:31.995 source:map[column:38014 line:1 type:source-location url:https://yandex.ru/ads/system/context.js urlProvider:network]] map[reflowTime:1.381 source:map[column:22604 line:1 type:source-location url:https://yandex.ru/ads/system/context.js urlProvider:network]] map[reflowTime:0.589 source:map[column:37548 line:1 type:source-location url:https://yandex.ru/ads/system/context.js urlProvider:network]]]

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:1666.482 label:Time to first byte subpart:timeToFirstByte] map[duration:2931.235 label:Resource load delay subpart:resourceLoadDelay] map[duration:448.85 label:Resource load duration subpart:resourceLoadDuration] map[duration:25.45 label:Element render delay subpart:elementRenderDelay]]

lhId: page-0-IMG

nodeLabel: div.adv_300x250_top > div#adfox_1488194504651863 > a.g73a5bf50 > img

path: 1,HTML,1,BODY,23,DIV,1,DIV,1,DIV,7,DIV,1,A,0,IMG

selector: div.adv_300x250_top > div#adfox_1488194504651863 > a.g73a5bf50 > img

snippet: <img alt="" src="https://avatars.mds.yandex.net/get-adfox-content/2788782/250909_adfox_3411…" style="width: 100%; height: auto; border: 0px; vertical-align: middle;">

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.adv_300x250_top > div#adfox_1488194504651863 > a.g73a5bf50 > img

path: 1,HTML,1,BODY,23,DIV,1,DIV,1,DIV,7,DIV,1,A,0,IMG

selector: div.adv_300x250_top > div#adfox_1488194504651863 > a.g73a5bf50 > img

snippet: <img alt="" src="https://avatars.mds.yandex.net/get-adfox-content/2788782/250909_adfox_3411…" style="width: 100%; height: auto; border: 0px; vertical-align: middle;">

HTTP/2 and HTTP/3 offer many benefits over HTTP/1.1, such as multiplexing. Learn more about using modern HTTP.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Protocol
iv.kommersant.ru/ContentFlex/ajax/fonts/noto-sans/noto-sans.css?2404271704550000	http/1.1
iv.kommersant.ru/ContentFlex/Redesign2020/kom2021.commonCss.css?2604171836405507	http/1.1
/ContentFlex/Redesign2020/kom2021.commonDeferCss.css?2604...	http/1.1
iv.kommersant.ru/ContentFlex/images/placeholder.gif	http/1.1
iv.kommersant.ru/ContentFlex/images/placeholder.webp	http/1.1
iv.kommersant.ru/ContentFlex/Redesign2020/kom2021.main.css?2604171836405549	http/1.1
iv.kommersant.ru/ContentFlex/Redesign2020/kom2021.commonJS.js?2604171836405513	http/1.1
iv.kommersant.ru/ContentFlex/Redesign2020/kom2021.pushPopup.js?2604171836405571	http/1.1
iv.kommersant.ru/ContentFlex/Redesign2020/kom2021.pollJS.js?2604171836405570	http/1.1
iv.kommersant.ru/ContentFlex/images/adv.gif	http/1.1
iv.kommersant.ru/ContentFlex/Redesign2020/kom2021.main.js?2604171836405549	http/1.1
/ContentFlex/Redesign2020/kom2021.commonAsyncJS.js?260417...	http/1.1
iv.kommersant.ru/ContentFlex/Redesign2020/kom2021.lentaVue.js?2604171836405543	http/1.1
iv.kommersant.ru/ContentFlex/ajax/fonts/noto-sans/NotoSans-SemiCondensed.woff2?1	http/1.1
/ContentFlex/ajax/fonts/noto-sans/NotoSans-SemiCondensedS...	http/1.1
iv.kommersant.ru/CorpImages/MainPage/1dd0086f-e5c7-4591-bfbc-38af32a9eae9.jpg	http/1.1
iv.kommersant.ru/CorpImages/MainPage/486def65-7ab7-44b1-a7f4-f3a139fe5bf2.jpg	http/1.1
iv.kommersant.ru/CorpImages/MainPage/b37f3511-0c6e-4443-b894-2aab3a07a0b2.jfif	http/1.1
iv.kommersant.ru/ContentFlex/images/favicons2020/favicon.svg	http/1.1

Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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.

URL	Transfer Size	Duration
iv.kommersant.ru/ContentFlex/Redesign2020/kom2021.commonJS.js?2604171836405513	47.8 KiB	1.4 s
iv.kommersant.ru/ContentFlex/Redesign2020/kom2021.main.css?2604171836405549	7.0 KiB	904 ms
iv.kommersant.ru/ContentFlex/Redesign2020/kom2021.commonCss.css?2604171836405507	10.4 KiB	904 ms

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
Атака Израиля и США на Иран `div.mini_sa > div.mini_sa__photo > picture.js-lazyimage > img.mini_sa__img`	iv.kommersant.ru/CorpImages/MainPage/b37f3511-0c6e-4443-b894-2aab3a07a0b2.jfif	119.0 KiB	92.8 KiB
div.adv_300x250_top > div#adfox_1488194504651863 > a.g73a5bf50 > img `div.adv_300x250_top > div#adfox_1488194504651863 > a.g73a5bf50 > img`	/get-adfox-content/2788782/250909_adfox_3411819_15286314....	31.6 KiB	7.4 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: 750 ms

URL	Time Spent
kommersant.ru/	750 ms
www.kommersant.ru/	0.0 ms

Keep the server response time for the main document short because all other requests depend on it. Learn more about the Time to First Byte metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 1.3 s

URL	Time Spent
www.kommersant.ru/	1.4 s

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
Атака Израиля и США на Иран Весь сюжет Главные новости Фигуранты дела Popcorn B… `body > main`	0.100
$ 74,58 € 87,76 ¥ 10,95 IMOEX 2757,70 `div.actual__body > ul.actual__list > li.actual__item > ul.actual__money`	0.002
div.main_header__important_logo > div#js-commercial-header > a > img.rocket_man__rocket `div.main_header__important_logo > div#js-commercial-header > a > img.rocket_man__rocket`	0.002

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.

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: 1.6 s 258.0 KiB

URL	Transfer Size	Est Savings
yastatic.net/partner-code-bundles/1304651/00cc0164cd639ddf.js	129.7 KiB	104.7 KiB
yandex.ru/ads/system/context.js	103.8 KiB	53.1 KiB
mc.yandex.ru/metrika/tag.js	84.7 KiB	43.2 KiB
iv.kommersant.ru/ContentFlex/Redesign2020/kom2021.lentaVue.js?2604171836405543	66.8 KiB	36.6 KiB
iv.kommersant.ru/ContentFlex/Redesign2020/kom2021.commonJS.js?2604171836405513	47.3 KiB	20.3 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Total CPU Time	Script Evaluation	Script Parse
www.kommersant.ru/	1.1 s	31 ms	20 ms
yandex.ru/ads/system/context.js	936 ms	622 ms	61 ms
top-fwz1.mail.ru/js/code.js	840 ms	555 ms	7.2 ms
Unattributable	694 ms	45 ms	0.0 ms
/ContentFlex/Redesign2020/kom2021.commonAsyncJS.js?260417...	466 ms	257 ms	21 ms
privacy-cs.mail.ru/static/sync-loader.js	419 ms	363 ms	12 ms
mc.yandex.ru/metrika/tag.js	289 ms	240 ms	36 ms
iv.kommersant.ru/ContentFlex/Redesign2020/kom2021.commonJS.js?2604171836405513	225 ms	173 ms	19 ms
yastatic.net/partner-code-bundles/1304651/00cc0164cd639ddf.js	219 ms	127 ms	91 ms
/ContentFlex/Redesign2020/kom2021.lazyChunks/jquery.slide...	184 ms	125 ms	3.2 ms
iv.kommersant.ru/ContentFlex/Redesign2020/kom2021.lentaVue.js?2604171836405543	152 ms	117 ms	26 ms
yastatic.net/partner-code-bundles/1304651/22d10f9d8e892aab.js	152 ms	90 ms	21 ms
iv.kommersant.ru/ContentFlex/Redesign2020/kom2021.pushPopup.js?2604171836405571	119 ms	23 ms	3.0 ms
iv.kommersant.ru/ContentFlex/Redesign2020/kom2021.main.js?2604171836405549	94 ms	67 ms	6.3 ms
yastatic.net/partner-code-bundles/1304651/28f6759769305be8.js	67 ms	47 ms	4.4 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	3.0 s
Style & Layout	1.1 s
Other	930 ms
Rendering	509 ms
Script Parsing & Compilation	349 ms
Parse HTML & CSS	122 ms
Garbage Collection	83 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
div.adv_300x250_top > div#adfox_1488194504651863 > a.g73a5bf50 > img `div.adv_300x250_top > div#adfox_1488194504651863 > a.g73a5bf50 > img`	/get-adfox-content/2788782/250909_adfox_3411819_15286314....

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

●Optimize DOM size

●Font display

●Optimize viewport for mobile

●Minify CSS

●Minify JavaScript

●Reduce unused CSS

●Avoids enormous network payloads Total size was 1,087 KiB

●Avoid long main-thread tasks 18 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 210 ms

●Server Backend Latencies 1,370 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

○INP breakdown

○User Timing marks and measures

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
НЕДВИЖИМОСТЬ `article.top_news__item > h2.top_news__name > a.top_news__link > span.top_news__update`
REVIEW `article.top_news__item > h2.top_news__name > a.top_news__link > span.top_news__update`
Главное `div.section_header > h3.section_name > a.link > span.section_name__text`
Мнения `div.section_header > h3.section_name > a.link > span.section_name__text`
Мультимедиа `div.section_header > h3.section_name > a.link > span.section_name__text`
Самое читаемое `div.section_header > h3.section_name > a.link > span.section_name__text`
567322 `article.most_readable__item > div.most_readable__text > h4.most_readable__tag > span.most_readable__number`
82230 `article.most_readable__item > div.most_readable__text > h4.most_readable__tag > span.most_readable__number`
79539 `article.most_readable__item > div.most_readable__text > h4.most_readable__tag > span.most_readable__number`
63775 `article.most_readable__item > div.most_readable__text > h4.most_readable__tag > span.most_readable__number`
42593 `article.most_readable__item > div.most_readable__text > h4.most_readable__tag > span.most_readable__number`
Экономика `div.section_header > h3.section_name > a.link > span.section_name__text`
Политика `div.section_header > h3.section_name > a.link > span.section_name__text`
Мир `div.section_header > h3.section_name > a.link > span.section_name__text`
Бизнес `div.section_header > h3.section_name > a.link > span.section_name__text`
Финансы `div.section_header > h3.section_name > a.link > span.section_name__text`
Потребительский рынок `div.section_header > h3.section_name > a.link > span.section_name__text`
Телекоммуникации `div.section_header > h3.section_name > a.link > span.section_name__text`
21.04.2026 `div.ba__text > ul.ba__list > li.ba__item > h2.ba__date`
21.04.2026 `div.ba__text > ul.ba__list > li.ba__item > h2.ba__date`
21.04.2026 `div.ba__text > ul.ba__list > li.ba__item > h2.ba__date`
21.04.2026 `div.ba__text > ul.ba__list > li.ba__item > h2.ba__date`
Общество `div.section_header > h3.section_name > a.link > span.section_name__text`
Происшествия `div.section_header > h3.section_name > a.link > span.section_name__text`
Культура `div.section_header > h3.section_name > a.link > span.section_name__text`
Спорт `div.section_header > h3.section_name > a.link > span.section_name__text`
Страна `div.section_header > h3.section_name > a.link > span.section_name__text`
Review `div.section_header > h3.section_name > a.link > span.section_name__text`
Weekend `div.section_header > h3.section_name > a.link > span.section_name__text`
HyperТекст `div.section_header > h3.section_name > a.link > span.section_name__text`
Тенденции `div.section_header > h3.section_name > a.link > span.section_name__text`
Стиль `section#spend > div.section_header > div.section_header__list > a.section_header__more`
Hi-Tech `section#spend > div.section_header > div.section_header__list > a.section_header__more`
Наука `section#spend > div.section_header > div.section_header__list > a.section_header__more`
Благотворительный фонд `div.footer_section > div.footer_rusfond > a.footer_rusfond__link > p.footer__title`
18+ реклама `div.footer_content > div.footer_section > div.footer_brand_logo > p.footer_brand_logo__age`
18+ `div.grid > div.footer_content > div.footer_section > span.footer__age`
© АО «Коммерсантъ». 127006, Москва, Оружейный переулок д. 41, тел. +7 (495) 797… `div.footer_content > div.footer_section > div.footer_adv__title > p.footer__title`
тел. +7 (495) 797-69-70. `div.footer_section > div.footer_adv__title > p.footer__title > nobr`
Сетевое издание «Коммерсантъ» (доменное имя сайта: kommersant.ru) зарегистриров… `div.footer_content > div.footer_section > div.footer_adv__title > p.footer__title`
Эл № ФС77-76922 `div.footer_section > div.footer_adv__title > p.footer__title > nobr`
Партнерские проекты/материалы, новости компаний, материалы с пометкой «Промо» и… `div.footer_content > div.footer_section > div.footer_adv__title > p.footer__title`
На kommersant.ru применяются рекомендательные технологии. Подробнее `div.footer_content > div.footer_section > div.footer_adv__title > p.footer__title`

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
Справка дня `div.slider-canvas > div.slider-item > article.rotd > h4.rotd__tag`
82230 `div.most_readable__content > article.most_readable__item > div.most_readable__text > h4.most_readable__tag`
79539 `div.most_readable__content > article.most_readable__item > div.most_readable__text > h4.most_readable__tag`
63775 `div.most_readable__content > article.most_readable__item > div.most_readable__text > h4.most_readable__tag`
42593 `div.most_readable__content > article.most_readable__item > div.most_readable__text > h4.most_readable__tag`

These are opportunities to improve keyboard navigation in your application.

Names and labels

Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.adv_nest > div.adv_300x250_top > div#adfox_1488194504651863 > a.g73a5bf50 `div.adv_nest > div.adv_300x250_top > div#adfox_1488194504651863 > a.g73a5bf50`
div.main_header__content > div.main_header__important_logo > div#js-commercial-header > a `div.main_header__content > div.main_header__important_logo > div#js-commercial-header > a`
body > div > a `body > div > a`

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
Архив `div.footer_content > ul.footer_section > li.footer__title > a.footer__link`
Контакты `div.footer_content > ul.footer_section > li.footer__title > a.footer__link`
Реклама `div.footer_content > ul.footer_section > li.footer__title > a.footer__link`
Вакансии `div.footer_content > ul.footer_section > li.footer__title > a.footer__link`

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-hidden="true"]` is not present on the document `<body>`

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

●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.

●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

●Document has a main landmark.

●Identical links have the same purpose.

○`[accesskey]` values are unique

○`[aria-*]` attributes match their roles

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

○ARIA attributes are used as specified for the element's role

○Deprecated ARIA roles were not used

○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 use only permitted ARIA attributes

○`[role]`s have all required `[aria-*]` attributes

○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.

○`[role]`s are contained by their required parent element

○`[role]` values are valid

○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

○`[aria-*]` attributes have valid values

○`[aria-*]` attributes are valid and not misspelled

○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.

○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.

○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`