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Lighthouse Mobile

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

Audit breakdown by category with detailed findings.

34

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
player.twitch.tv/undefined0.0 ms170.7 KiB
cmp.inmobi.com/tcfv2/cmp2.js?referer=fr.ign.com3600.0 s116.3 KiB
/149e9513-01fa-4fb0-aad4-566afd725d1b/2d206a39-8ed7-437e-...600.0 s56.5 KiB
pg.ignimgs.com/pogoadkit.js3600.0 s46.1 KiB
cmp.inmobi.com/tcfv2/61/cmp2ui-fr.js172800.0 s112.3 KiB
/jtv_user_pictures/6fe51a5c-7a1e-4bbb-a37c-ff9d0fc3387f-p...14400.0 s29.2 KiB
/eppo/api/flag-config/v1/config?sdkName=js-sdk-client&sdk...300.0 s18.6 KiB
cdn.jsdelivr.net/npm/hls.js604800.0 s159.9 KiB
sm.ign.com/zdadkit2.js?6807200.0 s16.7 KiB
pagead2.googlesyndication.com/omsdk/releases/live/omweb-v1.js3600.0 s15.4 KiB
/jtv_user_pictures/a1fe01fd-6172-4c2d-85be-2db16e1cda34-p...14400.0 s15.7 KiB
www.gstatic.com/eureka/clank/147/cast_sender.js86400.0 s13.4 KiB
sb.scorecardresearch.com/beacon.js86400.0 s6.7 KiB
cmp.inmobi.com/choice/h6UBY2gfxnvfG/fr.ign.com/choice.js?tag_version=V3900.0 s2.3 KiB
/cf_vods/d2nvs31859zcd8/1f1599635e06c8fd1182_ignfrance_79...1209600.0 s20.6 KiB
ign-fr.disqus.com/count.js300.0 s1.5 KiB
/count-data.js?1=article_87599&1=article_87629&1=article_...600.0 s1.1 KiB
/count-data.js?1=article_87644&1=article_87645&1=article_...600.0 s1.1 KiB
/count-data.js?1=article_87658&1=article_87660&1=article_...600.0 s1.1 KiB
ign-fr.disqus.com/count-data.js?1=article_87691&1=video_87665600.0 s858 B
/videos/zencoder/2026/04/06/1920/dd133ab5-cb7a-4c4c-be15-...0.0 ms0 B

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:0.133 source:map[column:197 line:818 type:source-location url:https://www.googletagmanager.com/gtag/js?id=G-CHH2BMFQ0J 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:10.633 source:map[type:text value:[unattributed]]] map[reflowTime:0.133 source:map[column:55 line:815 type:source-location url:https://www.googletagmanager.com/gtag/js?id=G-CHH2BMFQ0J urlProvider:network]] map[reflowTime:0.644 source:map[column:415 line:23 type:source-location url:https://fr.ign.com/s/js/zad.js?680 urlProvider:network]] map[reflowTime:8.344 source:map[column:20 line:25 type:source-location url:https://fr.ign.com/s/js/videoplayer/setupVideoPlayer.js?680 urlProvider:network]] map[reflowTime:0.558 source:map[column:223 line:733 type:source-location url:https://imasdk.googleapis.com/js/sdkloader/ima3.js urlProvider:network]] map[reflowTime:4.394 source:map[column:471455 line:1 type:source-location url:https://cmp.inmobi.com/tcfv2/61/cmp2ui-fr.js urlProvider:network]] map[reflowTime:10.013 source:map[column:361633 line:1 type:source-location url:https://cmp.inmobi.com/tcfv2/61/cmp2ui-fr.js urlProvider:network]] map[reflowTime:6.772 source:map[column:470758 line:1 type:source-location url:https://cmp.inmobi.com/tcfv2/61/cmp2ui-fr.js urlProvider:network]] map[reflowTime:0.625 source:map[column:465810 line:1 type:source-location url:https://cmp.inmobi.com/tcfv2/61/cmp2ui-fr.js urlProvider:network]] map[reflowTime:0.031 source:map[column:475253 line:1 type:source-location url:https://cmp.inmobi.com/tcfv2/61/cmp2ui-fr.js urlProvider:network]] map[reflowTime:0.695 source:map[column:147786 line:1 type:source-location url:https://cmp.inmobi.com/tcfv2/61/cmp2ui-fr.js urlProvider:network]]]

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
Good Luck, Have Fun, Don’t Die est assurément le plus gros bordel cinématograph… div.wrap > article.card > a.thumb > img.thumb
sm.ign.com/t/ign_fr/slotter/4/48535/48535_2qkd.800.png144.1 KiB68.6 KiB
div.tbl > article.embed_video_broll > figure.icmsvideocontainer > img.videoposter div.tbl > article.embed_video_broll > figure.icmsvideocontainer > img.videoposter
/t/ign_fr/video/a/alkahest-o/alkahest-official-gameplay-r...47.0 KiB33.7 KiB
Test Last Flag : un hero shooter à l’ancienne, centré sur l’objectif div.wrap > article.card > a.thumb > img.thumb
sm.ign.com/t/ign_fr/slotter/4/48450/48450_v82d.800.png82.3 KiB19.2 KiB
IGN Logo header.fixed-header > div.sidebar-page-header > a.logo-link > img.ign-icon
assets1.ignimgs.com/kraken/ign30-logo-alt.png?width=192&auto=webp14.6 KiB13.2 KiB
Test Diablo IV Lord of Hatred : lumière et ténèbres pour sauver Sanctuaire div.wrap > article.card > a.thumb > img.thumb
/t/ign_fr/screenshot/default/diablo-4-lord-of-hatred-ca-v...30.5 KiB10.9 KiB

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-4-IMG
nodeLabel: Test Diablo IV Lord of Hatred : lumière et ténèbres pour sauver Sanctuaire
path: 1,HTML,1,BODY,1,DIV,2,DIV,2,DIV,0,SECTION,0,DIV,0,ARTICLE,0,A,0,IMG
selector: div.wrap > article.card > a.thumb > img.thumb
snippet: <img src="https://sm.ign.com/t/ign_fr/screenshot/default/diablo-4-lord-of-hatred-ca-…" alt="Test Diablo IV Lord of Hatred : lumière et ténèbres pour sauver Sanctuaire" class="thumb" srcset="https://sm.ign.com/t/ign_fr/screenshot/default/diablo-4-lord-of-hatred-ca-…">

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

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.

URLEst Savings
/assets/inter-latin-variable-wghtOnly-normal-a05a0d687a08...5.0 ms

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 Size
fr.ign.com/s/css/videoplayer.css?6803.4 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: 1.5 s
URLTime Spent
ign.com/751 ms
www.ign.com/768 ms
fr.ign.com/0.0 ms

Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Diagnostics

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 1.2 s 616.0 KiB
URLTransfer SizeEst Savings
cdn.jsdelivr.net/npm/hls.js159.5 KiB145.2 KiB
/pagead/managed/js/gpt/m202604160201/pubads_impl.js187.7 KiB123.7 KiB
imasdk.googleapis.com/js/sdkloader/ima3.js150.0 KiB93.3 KiB
www.googletagmanager.com/gtag/js?id=G-CHH2BMFQ0J157.7 KiB62.3 KiB
cmp.inmobi.com/tcfv2/cmp2.js?referer=fr.ign.com115.8 KiB57.8 KiB
cmp.inmobi.com/tcfv2/61/cmp2ui-fr.js111.8 KiB51.9 KiB
pg.ignimgs.com/pogoadkit.js45.9 KiB45.2 KiB
fundingchoicesmessages.google.com/i/7047?ers=368.7 KiB36.8 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.

URLTotal CPU TimeScript EvaluationScript Parse
fr.ign.com/1.0 s147 ms7.5 ms
cmp.inmobi.com/tcfv2/cmp2.js?referer=fr.ign.com647 ms465 ms46 ms
Unattributable563 ms9.8 ms0.0 ms
/pagead/managed/js/gpt/m202604160201/pubads_impl.js528 ms428 ms92 ms
cmp.inmobi.com/tcfv2/61/cmp2ui-fr.js489 ms316 ms47 ms
www.googletagmanager.com/gtag/js?id=G-CHH2BMFQ0J402 ms339 ms61 ms
imasdk.googleapis.com/js/sdkloader/ima3.js307 ms254 ms48 ms
fundingchoicesmessages.google.com/i/7047?ers=3293 ms244 ms25 ms
www.googletagmanager.com/gtag/js?id=G-G0Z2FQREVE&cx=c&gtm=4e64k0h2218 ms184 ms32 ms
/f/AGSKWxVXMVcHHiHe3morEoN3zvmCkrdNQwAuQEcfy34o4rtQMzN-C9...121 ms35 ms72 ms
cdn.jsdelivr.net/npm/hls.js83 ms41 ms42 ms
sm.ign.com/themes_10.js?68082 ms4.7 ms1.1 ms
pagead2.googlesyndication.com/omsdk/releases/live/omweb-v1.js72 ms62 ms8.4 ms
securepubads.g.doubleclick.net/tag/js/gpt.js65 ms56 ms8.1 ms
fr.ign.com/s/bundle_ign.js?68053 ms43 ms3.9 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.

CategoryTime Spent
Script Evaluation2.7 s
Other1.1 s
Script Parsing & Compilation533 ms
Style & Layout494 ms
Rendering225 ms
Parse HTML & CSS89 ms
Garbage Collection34 ms

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 reasonFailure type
Pages with WebSocket cannot enter back/forward cache.Pending browser support

Minifying JavaScript files can reduce payload sizes and script parse time. Learn how to minify JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 5.1 KiB
URLTransfer SizeEst Savings
fr.ign.com/s/js/videoplayer/setupPreroll.js?6804.4 KiB2.7 KiB
fr.ign.com/s/js/videoplayer/setupVideoPlayer.js?6806.2 KiB2.3 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
/ign_fr/video/m/metro-2039/metro-2039-official-gameplay-t...879.2 KiB
fr.ign.com/s/ign/Inter-VariableFont_slnt,wght.ttf408.1 KiB
assets.twitch.tv/assets/amazon-ivs-wasmworker.min-27b0c24cc1530dd84dc1.wasm398.7 KiB
imasdk.googleapis.com/js/core/bridge3.758.1_en.html?gdpr=1270.9 KiB
/149e9513-01fa-4fb0-aad4-566afd725d1b/2d206a39-8ed7-437e-...247.8 KiB
/149e9513-01fa-4fb0-aad4-566afd725d1b/2d206a39-8ed7-437e-...247.2 KiB
assets.twitch.tv/assets/56004-66d68a0eb8ef5ca75bfc.js240.6 KiB
/pagead/managed/js/gpt/m202604160201/pubads_impl.js187.7 KiB
/ign_fr/video/x/xbox-lower/xbox-lowers-prices-on-game-pas...175.7 KiB
player.twitch.tv/undefined170.7 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
IGN Logo div.sidebar-header > div.logo-edition > a#headerlogo > img.ign-icon
assets1.ignimgs.com/kraken/ign30-logo-alt.png?width=192&auto=webp

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

●Layout shift culprits
●Optimize DOM size
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●Reduce unused CSS
●User Timing marks and measures 10 user timings
●Avoid long main-thread tasks 20 long tasks found
●Avoid non-composited animations 2 animated elements found
●Network Requests
●Network Round Trip Times 30 ms
●Server Backend Latencies 250 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 10 ms
●Avoid large layout shifts 5 layout shifts found
○INP breakdown
75

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#video-controls > div.bottom-controls > div.left-controls > button#play div#video-controls > div.bottom-controls > div.left-controls > button#play
div.bottom-controls > div.left-controls > div.volume-controls > button#volume-button div.bottom-controls > div.left-controls > div.volume-controls > button#volume-button
div.bottom-controls > div.right-controls > div.quality-controls > button#quality-button div.bottom-controls > div.right-controls > div.quality-controls > button#quality-button
div#video-controls > div.bottom-controls > div.right-controls > button#fullscreen-button div#video-controls > div.bottom-controls > div.right-controls > button#fullscreen-button

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.tbl > article.embed_video_broll > figure.icmsvideocontainer > img.videoposter div.tbl > article.embed_video_broll > figure.icmsvideocontainer > img.videoposter

Form elements without effective labels can create frustrating experiences for screen reader users. Learn more about the `select` element.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Change Region United States United Kingdom Australia Africa Adria Serbian/Croat… div#ignheader > div.region > div.region-selector > select#region-dropdown

Screen reader users rely on frame titles to describe the contents of frames. Learn more about frame titles.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
section.hero > article.hero > div.vplayer > iframe#video53243 section.hero > article.hero > div.vplayer > iframe#video53243

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.sidebar-main > ul.sidebar-section > li.legal > a div.sidebar-main > ul.sidebar-section > li.legal > a
div#mainblock > header.fixed-header > div.sidebar-page-header > a#current-user div#mainblock > header.fixed-header > div.sidebar-page-header > a#current-user
div.m-mobile > div.info-bottom > div.container > a.comments div.m-mobile > div.info-bottom > div.container > a.comments
div.m-mobile > div.info-bottom > div.container > a.comments div.m-mobile > div.info-bottom > div.container > a.comments
div.m-mobile > div.info-bottom > div.container > a.comments div.m-mobile > div.info-bottom > div.container > a.comments
div.m-mobile > div.info-bottom > div.container > a.comments div.m-mobile > div.info-bottom > div.container > a.comments
div.m-mobile > div.info-bottom > div.container > a.comments div.m-mobile > div.info-bottom > div.container > a.comments
div.m-mobile > div.info-bottom > div.container > a.comments div.m-mobile > div.info-bottom > div.container > a.comments
div.m-mobile > div.info-bottom > div.container > a.comments div.m-mobile > div.info-bottom > div.container > a.comments
div.m-mobile > div.info-bottom > div.container > a.comments div.m-mobile > div.info-bottom > div.container > a.comments
div.m-mobile > div.info-bottom > div.container > a.comments div.m-mobile > div.info-bottom > div.container > a.comments
div.m-mobile > div.info-bottom > div.container > a.comments div.m-mobile > div.info-bottom > div.container > a.comments
div.m-mobile > div.info-bottom > div.container > a.comments div.m-mobile > div.info-bottom > div.container > a.comments
div.m-mobile > div.info-bottom > div.container > a.comments div.m-mobile > div.info-bottom > div.container > a.comments
div.m-mobile > div.info-bottom > div.container > a.comments div.m-mobile > div.info-bottom > div.container > a.comments
div.m-mobile > div.info-bottom > div.container > a.comments div.m-mobile > div.info-bottom > div.container > a.comments
div.m-mobile > div.info-bottom > div.container > a.comments div.m-mobile > div.info-bottom > div.container > a.comments
div.m-mobile > div.info-bottom > div.container > a.comments div.m-mobile > div.info-bottom > div.container > a.comments
div.m-mobile > div.info-bottom > div.container > a.comments div.m-mobile > div.info-bottom > div.container > a.comments
div.m-mobile > div.info-bottom > div.container > a.comments div.m-mobile > div.info-bottom > div.container > a.comments
div.m-mobile > div.info-bottom > div.container > a.comments div.m-mobile > div.info-bottom > div.container > a.comments
div.m-mobile > div.info-bottom > div.container > a.comments div.m-mobile > div.info-bottom > div.container > a.comments
div.m-mobile > div.info-bottom > div.container > a.comments div.m-mobile > div.info-bottom > div.container > a.comments
div.m-mobile > div.info-bottom > div.container > a.comments div.m-mobile > div.info-bottom > div.container > a.comments
div.m-mobile > div.info-bottom > div.container > a.comments div.m-mobile > div.info-bottom > div.container > a.comments
div.m-mobile > div.info-bottom > div.container > a.comments div.m-mobile > div.info-bottom > div.container > a.comments
div.m-mobile > div.info-bottom > div.container > a.comments div.m-mobile > div.info-bottom > div.container > a.comments
div.m-mobile > div.info-bottom > div.container > a.comments div.m-mobile > div.info-bottom > div.container > a.comments
div.m-mobile > div.info-bottom > div.container > a.comments div.m-mobile > div.info-bottom > div.container > a.comments
div.m-mobile > div.info-bottom > div.container > a.comments div.m-mobile > div.info-bottom > div.container > a.comments
div.m-mobile > div.info-bottom > div.container > a.comments div.m-mobile > div.info-bottom > div.container > a.comments
div.m-mobile > div.info-bottom > div.container > a.comments div.m-mobile > div.info-bottom > div.container > a.comments
div.m-mobile > div.info-bottom > div.container > a.comments div.m-mobile > div.info-bottom > div.container > a.comments
footer#footer > div#footerMain > div.legal > a footer#footer > div#footerMain > div.legal > 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.

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
Google Photos Touch-Up : quoi de neuf avec les nouveaux outils d’édition subtil… div.tbl > article#content87682 > div.m > h3

These are opportunities to improve keyboard navigation in your application.

Tables and lists

Screen readers have a specific way of announcing lists. Ensuring proper list structure aids screen reader output. Learn more about proper list structure.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Accueil Ciné, Séries, Anime Comics & mangas Tech & Gadgets Le Cri du Mochi Test… div.side-container > div.side > div.sidebar-main > ul.sidebar-section
Contact Presse Politique de Cookies Conditions Générales d’Utilisation Politiqu… div.side-container > div.side > div.sidebar-main > ul.sidebar-section

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

○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
●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
●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
●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
●`<video>` elements contain a `<track>` element with `[kind="captions"]`
●Image elements do not have `[alt]` attributes that are redundant text.
○`[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
○`<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
○Skip links are focusable.
○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
○`[lang]` attributes have a valid value
○Tables have different content in the summary attribute and `<caption>`.
○All heading elements contain content.
○Uses ARIA roles only on compatible elements
○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.
96

Best Practices

General

Errors logged to the console indicate unresolved problems. They can come from network request failures and other browser concerns. Learn more about this errors in console diagnostic audit

Why this matters

Performance issues directly impact user engagement and conversion rates.

SourceDescription
fr.ign.com/s/vplayer-firstplay-button.svg
Failed to load resource: the server responded with a status of 404 ()
●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 issues in the `Issues` panel in Chrome Devtools
●Ensure CSP is effective against XSS attacks
●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
○Use a strong HSTS policy
○Mitigate clickjacking with XFO or CSP
85

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.

Crawling and Indexing

Search engines may use `href` attributes on links to crawl websites. Ensure that the `href` attribute of anchor elements links to an appropriate destination, so more pages of the site can be discovered. Learn how to make links crawlable

Why this matters

Performance issues directly impact user engagement and conversion rates.

Uncrawlable Link
div.sidebar-main > ul.sidebar-section > li.search > a div.sidebar-main > ul.sidebar-section > li.search > a

To appear in search results, crawlers need access to your app.

Content Best Practices

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.tbl > article.embed_video_broll > figure.icmsvideocontainer > img.videoposter div.tbl > article.embed_video_broll > figure.icmsvideocontainer > img.videoposter

Format your HTML in a way that enables crawlers to better understand your app’s content.

○Structured data is valid
●Page isn’t blocked from indexing
●Document has a `<title>` element
●Document has a meta description
●Page has successful HTTP status code
●Links have descriptive text
●robots.txt is valid
●Document has a valid `hreflang`
●Document has a valid `rel=canonical`

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