Skip to content
https://medscape.com

Lighthouse Desktop

· 0 checks — Desktop 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.

68

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
img.medscapestatic.com/medscape-core/www-content/js/homepage/homepage.js7064.0 s86.2 KiB
cdn.cookielaw.org/scripttemplates/202510.2.0/otBannerSdk.js86400.0 s124.3 KiB
assets.adobedtm.com/2c8c1e17b98c/017edbc80c83/launch-88df53f8d9c8.min.js3600.0 s60.3 KiB
img.medscapestatic.com/pi/scripts/omniture/bi_medscape.js10462.0 s52.9 KiB
/logos/ebe19500-bc8d-487f-9d89-98fde8b270e2/d7b36c55-7b82...86400.0 s74.3 KiB
pub.doubleverify.com/dvtag/17778638/DV1010728/pub.js900.0 s30.7 KiB
img.medscapestatic.com/medscape-core/ads/js/dfp/profads2.js6362.0 s34.2 KiB
/medscape-core/common/js/global/medscape-script/all-scrip...9824.0 s36.2 KiB
img.medscapestatic.com/medscape-core/common/js/global/medscape-library.js7992.0 s14.2 KiB
img.medscapestatic.com/medscape-core/www-content/css/homepage/homepage.css7064.0 s12.9 KiB
/medscape-promo/medscape-invitations/v1/1.1.1/js/invites-...4619.0 s11.7 KiB
/cdn-cgi/challenge-platform/h/b/scripts/jsd/0b8fb825cb67/...14400.0 s12.7 KiB
cdn.mouseflow.com/projects/766bdc67-82c4-445a-9a95-1d209d0510f6.js86400.0 s18.5 KiB
img.medscapestatic.com/medscape-core/common/css/global/global-common.css5595.0 s9.4 KiB
cdn.cookielaw.org/scripttemplates/202510.2.0/otTCF.js86400.0 s17.7 KiB
survey.survicate.com/workspaces/45341c632d637695272dd606df87b92e/web_surveys.js10.0 s5.7 KiB
cdn.cookielaw.org/consent/d7b36c55-7b82-43bc-90c0-9ae20e7d25b4/otSDKStub.js86400.0 s9.2 KiB
img.medscapestatic.com/medscape-core/shared-all/js/medscape/medscape-site.js6477.0 s4.0 KiB
img.medscapestatic.com/medscape-core/shared-all/js/sso-footer.js8141.0 s2.4 KiB
img.medscapestatic.com/pi/scripts/ads/build-ad-tag.js4646.0 s1.7 KiB
cdn.cookielaw.org/logos/static/powered_by_logo.svg86400.0 s2.6 KiB
img.medscapestatic.com/medscape-core/shared-all/js/vendor/medscape-vt.js8937.0 s1.2 KiB
img.medscapestatic.com/medscape-core/shared-all/js/cp/cp.js6078.0 s1.1 KiB
img.medscapestatic.com/medscape-core/promo/js/invites-layer.js5852.0 s783 B
/mspx/tr.gif?e=ps&id=9efee12c6562556d-CDG&idcf=9efee12c49...300.0 s344 B
/mspx/tr.gif?e=al&id=9efee12c6562556d-CDG&vi=&idcf=9efee1...300.0 s344 B
/mspx/tr.gif?e=ac&id=9efee12c6562556d-CDG&ap=177680062791...300.0 s344 B
www.medscape.com/mspx/tr.gif?e=bp&id=9efee12c6562556d-CDG&idcf=9efee12c49b07f64300.0 s344 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:0.21793] map[node:map[boundingRect:map[bottom:4289 height:4097 left:0 right:1350 top:192 width:1350] lhId:page-26-DIV nodeLabel:Today on Medscape Cardiology Diabetes & Endocrinology Family Medicine Hematolog… path:1,HTML,1,BODY,10,DIV selector:body.is-www > div#bodypadding snippet:<div id="bodypadding" class="mscp-origin logged-out"> type:node] score:0.14963] map[node:map[boundingRect:map[bottom:4289 height:4097 left:0 right:1350 top:192 width:1350] lhId:page-30-MAIN nodeLabel:Today on Medscape Cardiology Diabetes & Endocrinology Family Medicine Hematolog… path:1,HTML,1,BODY,10,DIV,8,MAIN selector:body.is-www > div#bodypadding > main.page-body snippet:<main class="page-body resp-container Medscape Today hp"> type:node] score:0.064838] map[node:map[boundingRect:map[bottom:940 height:231 left:0 right:1350 top:709 width:1350] lhId:page-31-DIV nodeLabel:We Care About Your Privacy We and our 60 partners store and access personal dat… path:1,HTML,1,BODY,31,DIV,1,DIV selector:body.is-www > div#onetrust-consent-sdk > div#onetrust-banner-sdk snippet:<div id="onetrust-banner-sdk" class="otFlat ot-iab-2 bottom vertical-align-content ot-buttons-fw" tabindex="0" role="region" aria-label="Cookie banner" style="bottom: 0px;"> type:node] score:0.000492] map[node:map[boundingRect:map[bottom:940 height:231 left:0 right:1350 top:709 width:1350] lhId:page-31-DIV nodeLabel:We Care About Your Privacy We and our 60 partners store and access personal dat… path:1,HTML,1,BODY,31,DIV,1,DIV selector:body.is-www > div#onetrust-consent-sdk > div#onetrust-banner-sdk snippet:<div id="onetrust-banner-sdk" class="otFlat ot-iab-2 bottom vertical-align-content ot-buttons-fw" tabindex="0" role="region" aria-label="Cookie banner" style="bottom: 0px;"> type:node] score:0.000466] map[node:map[boundingRect:map[bottom:940 height:231 left:0 right:1350 top:709 width:1350] lhId:page-31-DIV nodeLabel:We Care About Your Privacy We and our 60 partners store and access personal dat… path:1,HTML,1,BODY,31,DIV,1,DIV selector:body.is-www > div#onetrust-consent-sdk > div#onetrust-banner-sdk snippet:<div id="onetrust-banner-sdk" class="otFlat ot-iab-2 bottom vertical-align-content ot-buttons-fw" tabindex="0" role="region" aria-label="Cookie banner" style="bottom: 0px;"> type:node] score:0.000449]]

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.

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
/vim/live/professional_assets/medscape/images/thumbnail_l...101.6 KiB101.0 KiB
/vim/live/professional_assets/medscape/images/thumbnail_l...62.9 KiB62.3 KiB
div.carousel-item > div > a > img div.carousel-item > div > a > img
/vim/live/professional_assets/medscape/images/thumbnail_l...73.5 KiB60.0 KiB
/vim/live/professional_assets/medscape/images/thumbnail_l...58.8 KiB58.3 KiB
/vim/live/professional_assets/medscape/images/thumbnail_l...54.2 KiB53.7 KiB
/vim/live/professional_assets/medscape/images/thumbnail_l...50.0 KiB49.5 KiB
/vim/live/professional_assets/medscape/images/thumbnail_l...42.6 KiB42.2 KiB
/vim/live/professional_assets/medscape/images/thumbnail_l...40.6 KiB40.2 KiB
/vim/live/professional_assets/medscape/images/thumbnail_l...33.4 KiB33.1 KiB
/vim/live/professional_assets/medscape/images/thumbnail_l...26.6 KiB26.4 KiB
Reports li.nativecallouts-item > div > a > img
img.medscapestatic.com/pi/mscp-origin/courses/Business__of_Medicine_640x439.jpg22.6 KiB22.2 KiB
/vim/live/professional_assets/medscape/images/thumbnail_l...27.3 KiB21.7 KiB
/vim/live/professional_assets/medscape/images/thumbnail_l...19.0 KiB18.9 KiB
undefined ul > li > a > img.featimg
/vim/live/professional_assets/medscape/images/thumbnail_l...21.0 KiB16.0 KiB
undefined ul > li > a > img.featimg
/vim/live/professional_assets/medscape/images/thumbnail_l...18.4 KiB13.2 KiB
undefined ul > li > a > img.featimg
/vim/live/professional_assets/medscape/thumbnail_library/...18.2 KiB13.0 KiB
div#headerbox > div.resp-container > a.header-logo > img.header-logo-path div#headerbox > div.resp-container > a.header-logo > img.header-logo-path
img.medscapestatic.com/pi/logos/mscp-logo.png12.6 KiB12.5 KiB
undefined ul > li > a > img.featimg
/vim/live/professional_assets/medscape/thumbnail_library/...17.4 KiB12.2 KiB
undefined ul > li > a > img.featimg
/vim/live/professional_assets/medscape/images/thumbnail_l...12.4 KiB11.8 KiB
undefined ul > li > a > img.featimg
/vim/live/professional_assets/medscape/images/thumbnail_l...19.8 KiB11.6 KiB
undefined ul > li > a > img.featimg
/vim/live/professional_assets/medscape/thumbnail_library/...16.8 KiB11.6 KiB
div.columnist-intro > div > a > img div.columnist-intro > div > a > img
img.medscapestatic.com/thumbnail_library/partner/cdc_columnist.jpg11.4 KiB9.9 KiB
undefined ul > li > a > img.featimg
/vim/live/professional_assets/medscape/images/thumbnail_l...18.0 KiB9.7 KiB
undefined ul > li > a > img.featimg
/vim/live/professional_assets/medscape/images/thumbnail_l...9.9 KiB9.3 KiB
undefined ul.column2 > li > a > img.featimg
/vim/live/professional_assets/medscape/images/thumbnail_l...9.4 KiB8.8 KiB
undefined ul > li > a > img.featimg
/vim/live/professional_assets/dctmAssets/dt230124doctorfe...9.2 KiB8.6 KiB
undefined ul > li > a > img.featimg
/vim/live/professional_assets/medscape/thumbnail_library/...13.6 KiB8.4 KiB
undefined ul.column2 > li > a > img.featimg
/vim/live/professional_assets/medscape/images/thumbnail_l...8.8 KiB8.2 KiB
/vim/live/professional_assets/medscape/images/thumbnail_l...8.7 KiB8.1 KiB
undefined ul > li > a > img.featimg
/vim/live/professional_assets/medscape/images/thumbnail_l...8.4 KiB7.8 KiB
undefined ul.articles > li > a > img.featimg
/vim/live/professional_assets/medscape/images/thumbnail_l...8.4 KiB7.8 KiB
undefined ul > li > a > img.featimg
/vim/live/professional_assets/medscape/images/thumbnail_l...8.3 KiB7.8 KiB
undefined ul.column2 > li > a > img.featimg
/vim/live/professional_assets/medscape/images/thumbnail_l...8.0 KiB7.5 KiB
undefined ul > li > a > img.featimg
/vim/live/professional_assets/medscape/images/thumbnail_l...7.9 KiB7.4 KiB
undefined ul > li > a > img.featimg
/vim/live/professional_assets/medscape/thumbnail_library/...12.3 KiB7.1 KiB
undefined ul > li > a > img.featimg
/vim/live/professional_assets/medscape/images/thumbnail_l...5.9 KiB5.5 KiB
undefined ul > li > a > img.featimg
/vim/live/professional_assets/medscape/images/thumbnail_l...5.2 KiB4.8 KiB
undefined ul.articles > li > a > img.featimg
/vim/live/professional_assets/medscape/images/thumbnail_l...4.7 KiB4.4 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.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.
title: Preconnected origins
value: no origins were preconnected
description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.
title: Preconnect candidates

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.

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: 261 ms
URLTime Spent
medscape.com/261 ms
www.medscape.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.

ElementLayout shift score
Today on Medscape Cardiology Diabetes & Endocrinology Family Medicine Hematolog… body.is-www > div#bodypadding
0.150
Today on Medscape Cardiology Diabetes & Endocrinology Family Medicine Hematolog… body.is-www > div#bodypadding > main.page-body
0.065
We Care About Your Privacy We and our 60 partners store and access personal dat… body.is-www > div#onetrust-consent-sdk > div#onetrust-banner-sdk
0.000
We Care About Your Privacy We and our 60 partners store and access personal dat… body.is-www > div#onetrust-consent-sdk > div#onetrust-banner-sdk
0.000
We Care About Your Privacy We and our 60 partners store and access personal dat… body.is-www > div#onetrust-consent-sdk > div#onetrust-banner-sdk
0.000
We Care About Your Privacy We and our 60 partners store and access personal dat… body.is-www > div#onetrust-consent-sdk > div#onetrust-banner-sdk
0.000
We Care About Your Privacy We and our 60 partners store and access personal dat… body.is-www > div#onetrust-consent-sdk > div#onetrust-banner-sdk
0.000
We Care About Your Privacy We and our 60 partners store and access personal dat… body.is-www > div#onetrust-consent-sdk > div#onetrust-banner-sdk
0.000
We Care About Your Privacy We and our 60 partners store and access personal dat… body.is-www > div#onetrust-consent-sdk > div#onetrust-banner-sdk
0.000
We Care About Your Privacy We and our 60 partners store and access personal dat… body.is-www > div#onetrust-consent-sdk > div#onetrust-banner-sdk
0.000

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.

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 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

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.

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#headerbox > div.resp-container > a.header-logo > img.header-logo-path div#headerbox > div.resp-container > a.header-logo > img.header-logo-path
img.medscapestatic.com/pi/logos/mscp-logo.png
div.carousel-item > div > a > img div.carousel-item > div > a > img
img.medscapestatic.com/thumbnail_library/041819_AppMedscapeEssentialAd.jpg
div.carousel-item > div > a > img div.carousel-item > div > a > img
/vim/live/professional_assets/medscape/images/thumbnail_l...
div.carousel-item > div > a > img div.carousel-item > div > a > img
/vim/live/professional_assets/medscape/images/thumbnail_l...
div.carousel-item > div > a > img div.carousel-item > div > a > img
/thumbnail_library/200612_SalaryExplorer_carousel_800x450...
undefined ul > li > a > img.featimg
/vim/live/professional_assets/medscape/images/thumbnail_l...
undefined ul > li > a > img.featimg
/vim/live/professional_assets/medscape/images/thumbnail_l...
undefined ul > li > a > img.featimg
/vim/live/professional_assets/medscape/thumbnail_library/...
undefined ul > li > a > img.featimg
/vim/live/professional_assets/medscape/thumbnail_library/...
undefined ul > li > a > img.featimg
/vim/live/professional_assets/medscape/thumbnail_library/...
undefined ul > li > a > img.featimg
/vim/live/professional_assets/medscape/thumbnail_library/...
undefined ul > li > a > img.featimg
/vim/live/professional_assets/medscape/thumbnail_library/...
undefined ul > li > a > img.featimg
/vim/live/professional_assets/medscape/images/thumbnail_l...

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
Font display
Forced reflow
LCP breakdown
Modern HTTP
Optimize viewport for mobile
Minify CSS
Minify JavaScript
JavaScript execution time 0.5 s
Minimizes main-thread work 1.2 s
Avoid long main-thread tasks 3 long tasks found
Avoid non-composited animations 1 animated element found
Network Requests
Network Round Trip Times 30 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 170 ms
INP breakdown
User Timing marks and measures
76

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.

ARIA

Each ARIA `role` supports a specific subset of `aria-*` attributes. Mismatching these invalidates the `aria-*` attributes. Learn how to match ARIA attributes to their roles.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
George Lundberg: At Large at Medscape George D. Lundberg, MD div#columnists > div.flickity-viewport > div.flickity-slider > div.carousel-item
CDC Expert Commentary div#columnists > div.flickity-viewport > div.flickity-slider > div.carousel-item
Mandrola on Medscape John M. Mandrola, MD div#columnists > div.flickity-viewport > div.flickity-slider > div.carousel-item
Ethics: Today's Hot Topics Arthur L. Caplan, PhD div#columnists > div.flickity-viewport > div.flickity-slider > div.carousel-item
Impact Factor with F. Perry Wilson F. Perry Wilson, MD, MSCE div#columnists > div.flickity-viewport > div.flickity-slider > div.carousel-item
Digital Health Pulse Nelly Abulata, MD, PhD, MBA, PgDipTQMH div#columnists > div.flickity-viewport > div.flickity-slider > div.carousel-item
MEDSCAPE APP Access what you need, when you need it. Download the app. div#callouts > div.flickity-viewport > div.flickity-slider > div.carousel-item
MEDSCAPE SALARY EXPLORER See how your salary compares by specialty, location, e… div#callouts > div.flickity-viewport > div.flickity-slider > div.carousel-item
NEW! 2025 PHYSICIAN MENTAL HEALTH REPORT Easiest vs Toughest Specialties for Wo… div#callouts > div.flickity-viewport > div.flickity-slider > div.carousel-item
NEW SLIDESHOW! Regional Rankings: Best & Worst States to Practice div#callouts > div.flickity-viewport > div.flickity-slider > div.carousel-item

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

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
ACP-IM 2026 div.section-container > ul > li > div.tag
AAN 2026 div.section-container > ul.column2 > li > div.tag
MEDSCAPE APP div.carousel-item > div > a > span.subtitle
MEDSCAPE SALARY EXPLORER div.carousel-item > div > a > span.subtitle
NEW! 2025 PHYSICIAN MENTAL HEALTH REPORT div.carousel-item > div > a > span.subtitle

These are opportunities to improve the legibility of your content.

Internationalization and localization

If a page doesn't specify a `lang` attribute, a screen reader assumes that the page is in the default language that the user chose when setting up the screen reader. If the page isn't actually in the default language, then the screen reader might not announce the page's text correctly. Learn more about the `lang` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html html

These are opportunities to improve the interpretation of your content by users in different locales.

Names and labels

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.resp-container > div#searchbox > button.ai-mode-button > img div.resp-container > div#searchbox > button.ai-mode-button > img
div.columnist-intro > div > a > img div.columnist-intro > div > a > img
div.columnist-intro > div > a > img div.columnist-intro > div > a > img
div.columnist-intro > div > a > img div.columnist-intro > div > a > img
div.columnist-intro > div > a > img div.columnist-intro > div > a > img
div.columnist-intro > div > a > img div.columnist-intro > div > a > img
div.columnist-intro > div > a > img div.columnist-intro > div > a > img
div.carousel-item > div > a > img div.carousel-item > div > a > img
div.carousel-item > div > a > img div.carousel-item > div > a > img
div.carousel-item > div > a > img div.carousel-item > div > a > img
div.carousel-item > div > a > img div.carousel-item > div > a > img

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.section-container > ul.articles > li > a div.section-container > ul.articles > li > a
div.section-container > ul.articles > li > a div.section-container > ul.articles > li > a
div.section-container > ul.column2 > li > a div.section-container > ul.column2 > li > a
div.section-container > ul > li > a div.section-container > ul > li > a
div.section-container > ul > li > a div.section-container > ul > li > a
div.section-container > ul > li > a div.section-container > ul > li > a
div.section-container > ul > li > a div.section-container > ul > li > 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
REPORTS li.nativecallouts-item > div > div.tag > a

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>`
`[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
Form elements have associated labels
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
ARIA attributes are used as specified for the element's role
Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
`[aria-hidden="true"]` elements do not contain focusable descendents
Elements use only permitted ARIA attributes
Document has a `<title>` element
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
Heading elements appear in a sequentially-descending order
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
`button`, `link`, and `menuitem` elements have accessible names
ARIA input fields have accessible names
ARIA `meter` elements have accessible names
ARIA `progressbar` elements have accessible names
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
`[role]`s are contained by their required parent element
Elements with the `role=text` attribute do not have focusable descendents.
ARIA toggle fields have accessible names
ARIA `tooltip` elements have accessible names
ARIA `treeitem` elements have accessible names
The page contains a heading, skip link, or landmark region
`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Definition list items are wrapped in `<dl>` elements
ARIA IDs are unique
No form fields have multiple labels
`<frame>` or `<iframe>` elements have a title
`<html>` element has a valid value for its `[lang]` attribute
`<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.
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.
77

Best Practices

Browser Compatibility

Specifying a doctype prevents the browser from switching to quirks-mode. Learn more about the doctype declaration.

Why this matters

Performance issues directly impact user engagement and conversion rates.

General

Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / WarningSource
SharedStorage
StorageType.persistent is deprecated. Please use standardized navigator.storage instead.
Fledge
Uses HTTPS
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
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
83

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
More nav.header-nav > ul > li > a#header-more-link
Manage Preferences div.footer-row--links > div.footer-links > div.footer-section > a#ot-sdk-btn

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.resp-container > div#searchbox > button.ai-mode-button > img div.resp-container > div#searchbox > button.ai-mode-button > img
div.columnist-intro > div > a > img div.columnist-intro > div > a > img
div.columnist-intro > div > a > img div.columnist-intro > div > a > img
div.columnist-intro > div > a > img div.columnist-intro > div > a > img
div.columnist-intro > div > a > img div.columnist-intro > div > a > img
div.columnist-intro > div > a > img div.columnist-intro > div > a > img
div.columnist-intro > div > a > img div.columnist-intro > div > a > img
div.carousel-item > div > a > img div.carousel-item > div > a > img
div.carousel-item > div > a > img div.carousel-item > div > a > img
div.carousel-item > div > a > img div.carousel-item > div > a > img
div.carousel-item > div > a > img div.carousel-item > div > a > img

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
Document has a valid `hreflang`
Document has a valid `rel=canonical`
robots.txt is valid

Send Feedback