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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.

49

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.js7083.0 s86.2 KiB
assets.adobedtm.com/2c8c1e17b98c/017edbc80c83/launch-88df53f8d9c8.min.js3600.0 s60.3 KiB
img.medscapestatic.com/pi/scripts/omniture/bi_medscape.js10481.0 s52.9 KiB
pub.doubleverify.com/dvtag/17778638/DV1010728/pub.js900.0 s30.7 KiB
img.medscapestatic.com/medscape-core/ads/js/dfp/profads2.js6381.0 s34.1 KiB
/medscape-core/common/js/global/medscape-script/all-scrip...9843.0 s36.3 KiB
img.medscapestatic.com/medscape-core/common/js/global/medscape-library.js8011.0 s14.2 KiB
img.medscapestatic.com/medscape-core/www-content/css/homepage/homepage.css7083.0 s13.0 KiB
/cdn-cgi/challenge-platform/h/b/scripts/jsd/0b8fb825cb67/...14400.0 s11.9 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.css5614.0 s9.4 KiB
survey.survicate.com/workspaces/45341c632d637695272dd606df87b92e/web_surveys.js10.0 s5.7 KiB
img.medscapestatic.com/medscape-core/shared-all/js/medscape/medscape-site.js6496.0 s4.0 KiB
img.medscapestatic.com/medscape-core/shared-all/js/sso-footer.js8160.0 s2.4 KiB
img.medscapestatic.com/medscape-core/shared-all/js/vendor/medscape-vt.js8956.0 s1.2 KiB
img.medscapestatic.com/medscape-core/shared-all/js/cp/cp.js6097.0 s1017 B
/mspx/tr.gif?e=al&id=9efee0b2850e0346-CDG&vi=&idcf=9efee0...300.0 s703 B
img.medscapestatic.com/medscape-core/promo/js/invites-layer.js5871.0 s783 B
/mspx/tr.gif?e=ac&id=9efee0b2850e0346-CDG&ap=177680060769...300.0 s474 B
www.medscape.com/mspx/tr.gif?e=bp&id=9efee0b2850e0346-CDG&idcf=9efee0b26ab5035a300.0 s331 B
/mspx/tr.gif?e=ps&id=9efee0b2850e0346-CDG&idcf=9efee0b26a...300.0 s281 B

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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: undefined
path: 1,HTML,1,BODY,10,DIV,8,MAIN,4,SECTION,2,DIV,0,UL,1,LI,0,A,0,IMG
selector: ul > li > a > img.featimg
snippet: <img src="https://img.medscapestatic.com/vim/live/professional_assets/medscape/image…" alt="undefined" border="0" class="featimg">

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.

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
div.carousel-item > div > a > img div.carousel-item > div > a > img
img.medscapestatic.com/thumbnail_library/041819_AppMedscapeEssentialAd.jpg54.2 KiB42.3 KiB
Reports li.nativecallouts-item > div > a > img
img.medscapestatic.com/pi/mscp-origin/courses/Business__of_Medicine_640x439.jpg22.6 KiB22.2 KiB
div.carousel-item > div > a > img div.carousel-item > div > a > img
/thumbnail_library/200612_SalaryExplorer_carousel_800x450...18.9 KiB14.7 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/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 div.flickity-slider > li > a > img.featimg
/vim/live/professional_assets/medscape/thumbnail_library/...17.4 KiB9.8 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.articles > 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.articles > li > a > img.featimg
/vim/live/professional_assets/medscape/images/thumbnail_l...8.8 KiB8.2 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.articles > 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/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 div.flickity-slider > li.is-selected > a > img.featimg
/vim/live/professional_assets/medscape/thumbnail_library/...12.3 KiB4.7 KiB
undefined ul.articles > li > a > img.featimg
/vim/live/professional_assets/medscape/images/thumbnail_l...4.7 KiB4.4 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: 808 ms
URLTime Spent
medscape.com/808 ms
www.medscape.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.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work

Why this matters

Performance issues directly impact user engagement and conversion rates.

CategoryTime Spent
Script Evaluation1.5 s
Other612 ms
Style & Layout297 ms
Script Parsing & Compilation234 ms
Parse HTML & CSS139 ms
Rendering50 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 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/images/thumbnail_l...
undefined div.flickity-slider > li.is-selected > a > img.featimg
/vim/live/professional_assets/medscape/images/thumbnail_l...
undefined div.flickity-slider > li > a > img.featimg
/vim/live/professional_assets/medscape/images/thumbnail_l...
undefined div.flickity-slider > li.is-selected > a > img.featimg
/vim/live/professional_assets/medscape/thumbnail_library/...
undefined div.flickity-slider > li > a > img.featimg
/vim/live/professional_assets/medscape/thumbnail_library/...
undefined div.flickity-slider > li > a > img.featimg
/vim/live/professional_assets/medscape/thumbnail_library/...
undefined div.flickity-slider > li > a > img.featimg
/vim/live/professional_assets/medscape/thumbnail_library/...
undefined div.flickity-slider > li > a > img.featimg
/vim/live/professional_assets/medscape/thumbnail_library/...
undefined div.flickity-slider > 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.

●Layout shift culprits
●Optimize DOM size
●Font display
●Forced reflow
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●Avoid long main-thread tasks 10 long tasks found
●Network Requests
●Network Round Trip Times 50 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
○Avoid non-composited animations
○Avoid large layout shifts
62

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
Mandrola on Medscape John M. Mandrola, MD 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
Impact Factor with F. Perry Wilson F. Perry Wilson, MD, MSCE 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
CDC Expert Commentary div#columnists > div.flickity-viewport > div.flickity-slider > div.carousel-item
George Lundberg: At Large at Medscape George D. Lundberg, MD 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
Medscape Physician Wealth & Debt Report 2026 ul.flickity-enabled > div.flickity-viewport > div.flickity-slider > li.is-selected
Medscape Most Popular Specialties for Doctors Report 2026 ul.flickity-enabled > div.flickity-viewport > div.flickity-slider > li
Medscape Physician Compensation Report 2026: Positive Signs ul.flickity-enabled > div.flickity-viewport > div.flickity-slider > li
Europe’s Retiring From Medicine Report 2025 ul.flickity-enabled > div.flickity-viewport > div.flickity-slider > li
Medscape Primary Care & Mental Health Treatment Report 2026 ul.flickity-enabled > div.flickity-viewport > div.flickity-slider > li
Infographic: How Much a Doctor’s Average Pay in the US Rose ul.flickity-enabled > div.flickity-viewport > div.flickity-slider > li.is-selected
Infographic: Primary Care on Mental Health’s Front Lines ul.flickity-enabled > div.flickity-viewport > div.flickity-slider > li
Infographic: Foreign-Trained Docs Help With Shortage Here ul.flickity-enabled > div.flickity-viewport > div.flickity-slider > li
Infographic: Dream and Dud Cities for Practicing Medicine ul.flickity-enabled > div.flickity-viewport > div.flickity-slider > li
Infographic: Pace of Affiliations by Primary Care Practices ul.flickity-enabled > div.flickity-viewport > div.flickity-slider > li

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.articles > li > div.tag
MEDSCAPE APP 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.articles > li > a div.section-container > ul.articles > 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.flickity-viewport > div.flickity-slider > li > a div.flickity-viewport > div.flickity-slider > 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.

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
Medscape Physician Wealth & Debt Report 2026 Medscape Most Popular Specialties … main.page-body > section.hp_cardlayout > div.section-container > ul.flickity-enabled
Infographic: How Much a Doctor’s Average Pay in the US Rose Infographic: Primar… main.page-body > section.hp_cardlayout > div.section-container > ul.flickity-enabled

Screen readers require list items (`<li>`) to be contained within a parent `<ul>`, `<ol>` or `<menu>` to be announced properly. Learn more about proper list structure.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Medscape Physician Wealth & Debt Report 2026 ul.flickity-enabled > div.flickity-viewport > div.flickity-slider > li.is-selected
Medscape Most Popular Specialties for Doctors Report 2026 ul.flickity-enabled > div.flickity-viewport > div.flickity-slider > li
Medscape Physician Compensation Report 2026: Positive Signs ul.flickity-enabled > div.flickity-viewport > div.flickity-slider > li
Europe’s Retiring From Medicine Report 2025 ul.flickity-enabled > div.flickity-viewport > div.flickity-slider > li
Medscape Primary Care & Mental Health Treatment Report 2026 ul.flickity-enabled > div.flickity-viewport > div.flickity-slider > li
Infographic: How Much a Doctor’s Average Pay in the US Rose ul.flickity-enabled > div.flickity-viewport > div.flickity-slider > li.is-selected
Infographic: Primary Care on Mental Health’s Front Lines ul.flickity-enabled > div.flickity-viewport > div.flickity-slider > li
Infographic: Foreign-Trained Docs Help With Shortage Here ul.flickity-enabled > div.flickity-viewport > div.flickity-slider > li
Infographic: Dream and Dud Cities for Practicing Medicine ul.flickity-enabled > div.flickity-viewport > div.flickity-slider > li
Infographic: Pace of Affiliations by Primary Care Practices ul.flickity-enabled > div.flickity-viewport > div.flickity-slider > li

These are opportunities to improve the experience of reading tabular or list data using 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>`
●`[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 use only permitted ARIA attributes
●Document has a `<title>` element
●Links are distinguishable without relying on color.
●No element has a `[tabindex]` value greater than 0
●Heading elements appear in a sequentially-descending order
●Document has a main landmark.
●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
○Deprecated ARIA roles were not used
○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
○`[aria-hidden="true"]` elements do not contain focusable descendents
○ARIA input fields have accessible names
○ARIA `meter` elements have accessible names
○ARIA `progressbar` elements have accessible names
○`[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
○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
Your Privacy Choices 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

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