Lighthouse Desktop

· 0 checks — Desktop 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
aamc.tfaforms.net/wForms/3.11/js/wforms.js	0.0 ms	84.2 KiB
www.aamc.org/sites/default/files/We%20Are%20the%20AAMC%20Thumbnail.jpg	1209600.0 s	404.8 KiB
www.redditstatic.com/ads/pixel.js	60.0 s	19.0 KiB
www.google-analytics.com/analytics.js	7200.0 s	20.9 KiB
aamc.tfaforms.net/js/kalendae/kalendae.standalone.min.js	0.0 ms	13.4 KiB
/sites/default/files/css/css_Vy72AoZsGlPBiug0-qDqe7JE0byx...	1209600.0 s	101.5 KiB
/sites/default/files/js/js_0pQ4-3upvNFJx2BwDmd6MF6mSnE3J4...	1209600.0 s	90.7 KiB
/sites/default/files/js/js_5Zl9LscdZ3Nf0YS_nPGZRBsDFXf_fE...	1209600.0 s	83.4 KiB
snap.licdn.com/li.lms-analytics/insight.min.js	86400.0 s	18.7 KiB
/sites/default/files/styles/section_background_image/publ...	1209600.0 s	68.2 KiB
/sites/default/files/styles/section_background_image/publ...	1209600.0 s	66.2 KiB
/sites/default/files/styles/section_background_image/publ...	1209600.0 s	65.2 KiB
static.hotjar.com/c/hotjar-3441183.js?sv=7	60.0 s	6.2 KiB
/sites/default/files/styles/section_background_image/publ...	1209600.0 s	58.2 KiB
/sites/default/files/styles/scale_and_crop_678_x_376/publ...	1209600.0 s	51.1 KiB
www.aamc.org/themes/custom/hippocrates/fonts/roboto-bold.woff2	1209600.0 s	49.1 KiB
/sites/default/files/styles/scale_and_crop_678_x_376/publ...	1209600.0 s	47.2 KiB
/sites/default/files/styles/scale_and_crop_678_x_376/publ...	1209600.0 s	37.8 KiB
/sites/default/files/styles/focal_point_480x360/public/mc...	1209600.0 s	33.0 KiB
/sites/default/files/styles/scale_and_crop_678_x_376/publ...	1209600.0 s	32.5 KiB
aamc.tfaforms.net/wForms/3.11/js/localization-en_US.js	0.0 ms	2.8 KiB
www.aamc.org/sites/default/files/2026-01/WeAreAAMC6%201.webm	1209600.0 s	25.1 KiB
extend.vimeocdn.com/ga/22066161.js	86400.0 s	5.8 KiB
aamc.tfaforms.net/css/kalendae.css	0.0 ms	2.2 KiB
www.aamc.org/themes/custom/hippocrates/fonts/chivo-regular.woff2	1209600.0 s	19.5 KiB
aamc.tfaforms.net/wForms/3.11/js/wforms_calendar.js	0.0 ms	1.8 KiB
www.aamc.org/themes/custom/hippocrates/fonts/chivo-bold.woff2	1209600.0 s	17.2 KiB
www.aamc.org/themes/custom/hippocrates/fonts/roboto-regular.woff2	1209600.0 s	16.1 KiB
/sites/default/files/css/css_36_3Btz33RrEPtUYbagiu5yeOWIO...	1209600.0 s	11.5 KiB
/sites/default/files/css/css_VoH7F-f6WjmOA1RhmTdjf-uPzt_x...	1209600.0 s	8.5 KiB
www.aamc.org/modules/custom/aamc_utility/images/loading.gif	1209600.0 s	8.5 KiB
www.google-analytics.com/plugins/ua/linkid.js	3600.0 s	995 B
/rp.gif?ts=1776896803210&id=a2_h7viuhrstruh&event=PageVis...	0.0 ms	666 B
/sites/default/files/css/css_uVB265OOl4KXq7-aTZPRMjPNE_5p...	1209600.0 s	4.1 KiB
/collect?v=2&fmt=js&pid=7057404%2C4636330&time=1776896803...	0.0 ms	272 B
/collect?v=2&fmt=js&pid=7057404%2C4636330&time=1776896803...	0.0 ms	254 B
www.aamc.org/modules/contrib/google_tag/js/gtm.js?td85j5	1209600.0 s	1.4 KiB
www.aamc.org/modules/contrib/google_tag/js/gtag.js?td85j5	1209600.0 s	1.4 KiB
www.aamc.org/modules/custom/aamc_utility/images/close.png	1209600.0 s	599 B
/sites/default/files/js/js_ECurzVQdX1kv9Bl-3MBiOrK-9x7Jt4...	1209600.0 s	538 B
www.aamc.org/sites/default/files/2026-01/WeAreAAMC6%201.webm	1209600.0 s	0 B
www.aamc.org/sites/default/files/2026-01/WeAreAAMC6%201.webm	1209600.0 s	0 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.

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:24.973 source:map[column:156 line:12 type:source-location url:https://www.aamc.org/sites/default/files/js/js_5Zl9LscdZ3Nf0YS_nPGZRBsDFXf_fEzrAxVXD4nqaa0.js?scope=footer&delta=0&language=en&theme=hippocrates&include=eJx1UG2SgyAMvZDKkZgIKaYF4pDotLdfpLrqzuwfyPsg5AUgOQs-UTbwWw5naZ_SNRTAukWUk8UVs4oJzCGiVQg2QYaA5W6wE2QfsXyfF4yg6C0pJuPLMkMcrtzXJcLmgR5L4yMHyqcQKb8qB_7o2Uh2L7vkdpHj3b4oRdKPuYIB6jBqx2Y9Uh3GfaIr1-Fbty8PbYfdmduEevzFAzzhfSdTN9E8s9tSicE01oS-f3C5CyHyCPFGTVi4X8kj947TzLku9mYQBZV_NJ0wYd_y3nl2_VWjNBde677TEpWsYESnhpJ0UqWaoqDU9kLrFmiMuE_ai37qRsIPxjbjfg urlProvider:network]]]

headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]

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url:https://www.aamc.org/sites/default/files/js/js_0pQ4-3upvNFJx2BwDmd6MF6mSnE3J4HdMA30u2n1iyk.js?scope=footer&delta=6&language=en&theme=hippocrates&include=eJx1UG2SgyAMvZDKkZgIKaYF4pDotLdfpLrqzuwfyPsg5AUgOQs-UTbwWw5naZ_SNRTAukWUk8UVs4oJzCGiVQg2QYaA5W6wE2QfsXyfF4yg6C0pJuPLMkMcrtzXJcLmgR5L4yMHyqcQKb8qB_7o2Uh2L7vkdpHj3b4oRdKPuYIB6jBqx2Y9Uh3GfaIr1-Fbty8PbYfdmduEevzFAzzhfSdTN9E8s9tSicE01oS-f3C5CyHyCPFGTVi4X8kj947TzLku9mYQBZV_NJ0wYd_y3nl2_VWjNBde677TEpWsYESnhpJ0UqWaoqDU9kLrFmiMuE_ai37qRsIPxjbjfg urlProvider:network]] map[reflowTime:0.475 source:map[column:3241 line:32 type:source-location 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url:https://www.aamc.org/sites/default/files/js/js_0pQ4-3upvNFJx2BwDmd6MF6mSnE3J4HdMA30u2n1iyk.js?scope=footer&delta=6&language=en&theme=hippocrates&include=eJx1UG2SgyAMvZDKkZgIKaYF4pDotLdfpLrqzuwfyPsg5AUgOQs-UTbwWw5naZ_SNRTAukWUk8UVs4oJzCGiVQg2QYaA5W6wE2QfsXyfF4yg6C0pJuPLMkMcrtzXJcLmgR5L4yMHyqcQKb8qB_7o2Uh2L7vkdpHj3b4oRdKPuYIB6jBqx2Y9Uh3GfaIr1-Fbty8PbYfdmduEevzFAzzhfSdTN9E8s9tSicE01oS-f3C5CyHyCPFGTVi4X8kj947TzLku9mYQBZV_NJ0wYd_y3nl2_VWjNBde677TEpWsYESnhpJ0UqWaoqDU9kLrFmiMuE_ai37qRsIPxjbjfg urlProvider:network]] map[reflowTime:0.97 source:map[column:10237 line:31 type:source-location url:https://www.aamc.org/sites/default/files/js/js_0pQ4-3upvNFJx2BwDmd6MF6mSnE3J4HdMA30u2n1iyk.js?scope=footer&delta=6&language=en&theme=hippocrates&include=eJx1UG2SgyAMvZDKkZgIKaYF4pDotLdfpLrqzuwfyPsg5AUgOQs-UTbwWw5naZ_SNRTAukWUk8UVs4oJzCGiVQg2QYaA5W6wE2QfsXyfF4yg6C0pJuPLMkMcrtzXJcLmgR5L4yMHyqcQKb8qB_7o2Uh2L7vkdpHj3b4oRdKPuYIB6jBqx2Y9Uh3GfaIr1-Fbty8PbYfdmduEevzFAzzhfSdTN9E8s9tSicE01oS-f3C5CyHyCPFGTVi4X8kj947TzLku9mYQBZV_NJ0wYd_y3nl2_VWjNBde677TEpWsYESnhpJ0UqWaoqDU9kLrFmiMuE_ai37qRsIPxjbjfg urlProvider:network]] map[reflowTime:2.21 source:map[column:3342 line:33 type:source-location url:https://www.aamc.org/sites/default/files/js/js_0pQ4-3upvNFJx2BwDmd6MF6mSnE3J4HdMA30u2n1iyk.js?scope=footer&delta=6&language=en&theme=hippocrates&include=eJx1UG2SgyAMvZDKkZgIKaYF4pDotLdfpLrqzuwfyPsg5AUgOQs-UTbwWw5naZ_SNRTAukWUk8UVs4oJzCGiVQg2QYaA5W6wE2QfsXyfF4yg6C0pJuPLMkMcrtzXJcLmgR5L4yMHyqcQKb8qB_7o2Uh2L7vkdpHj3b4oRdKPuYIB6jBqx2Y9Uh3GfaIr1-Fbty8PbYfdmduEevzFAzzhfSdTN9E8s9tSicE01oS-f3C5CyHyCPFGTVi4X8kj947TzLku9mYQBZV_NJ0wYd_y3nl2_VWjNBde677TEpWsYESnhpJ0UqWaoqDU9kLrFmiMuE_ai37qRsIPxjbjfg urlProvider:network]] map[reflowTime:0.165 source:map[column:3534 line:31 type:source-location url:https://www.aamc.org/sites/default/files/js/js_0pQ4-3upvNFJx2BwDmd6MF6mSnE3J4HdMA30u2n1iyk.js?scope=footer&delta=6&language=en&theme=hippocrates&include=eJx1UG2SgyAMvZDKkZgIKaYF4pDotLdfpLrqzuwfyPsg5AUgOQs-UTbwWw5naZ_SNRTAukWUk8UVs4oJzCGiVQg2QYaA5W6wE2QfsXyfF4yg6C0pJuPLMkMcrtzXJcLmgR5L4yMHyqcQKb8qB_7o2Uh2L7vkdpHj3b4oRdKPuYIB6jBqx2Y9Uh3GfaIr1-Fbty8PbYfdmduEevzFAzzhfSdTN9E8s9tSicE01oS-f3C5CyHyCPFGTVi4X8kj947TzLku9mYQBZV_NJ0wYd_y3nl2_VWjNBde677TEpWsYESnhpJ0UqWaoqDU9kLrFmiMuE_ai37qRsIPxjbjfg 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.

	URL	Resource Size	Est Savings
div.row > div.hero-video__media > div.hero-video__video-wrapper > video.hero-video__video `div.row > div.hero-video__media > div.hero-video__video-wrapper > video.hero-video__video`	www.aamc.org/sites/default/files/We%20Are%20the%20AAMC%20Thumbnail.jpg	404.4 KiB	387.5 KiB
Doctors meeting in hospital `div.col-md-12 > a.bento-box__link > div.bento-box__image-wrapper > img`	/sites/default/files/styles/scale_and_crop_678_x_376/publ...	37.6 KiB	20.9 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-2-DIV

nodeLabel: ADVOCACY & POLICY Advocating as the voice of academic medicine The AAMC works …

path: 1,HTML,1,BODY,2,DIV,3,DIV,0,MAIN,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,ARTICLE,0,DIV,2,DIV

selector: div#block-hippocrates-content > article.node > div.node__content > div.center-container

snippet: <div class="center-container section-bg-light section-theme-block aamc-custom-layout-s…" style="--bg-color: var(--section-bg-white); --bg-opacity: 0; --bg-image: url('htt…;">

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

value: No additional origins are good candidates for preconnecting

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
aamc.tfaforms.net/css/kalendae.css	2.2 KiB	226 ms
/sites/default/files/css/css_Vy72AoZsGlPBiug0-qDqe7JE0byx...	101.5 KiB	163 ms
/sites/default/files/js/js_ECurzVQdX1kv9Bl-3MBiOrK-9x7Jt4...	538 B
www.aamc.org/modules/contrib/google_tag/js/gtag.js?td85j5	1.4 KiB
www.aamc.org/modules/contrib/google_tag/js/gtm.js?td85j5	1.4 KiB
/sites/default/files/css/css_VoH7F-f6WjmOA1RhmTdjf-uPzt_x...	8.5 KiB
/sites/default/files/css/css_uVB265OOl4KXq7-aTZPRMjPNE_5p...	4.1 KiB
/sites/default/files/css/css_36_3Btz33RrEPtUYbagiu5yeOWIO...	11.5 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: 222 ms

URL	Time Spent
aamc.org/	222 ms
www.aamc.org/	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 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.

Estimated savings: 40 ms 72.5 KiB

URL	Transfer Size	Est Savings
/sites/default/files/css/css_Vy72AoZsGlPBiug0-qDqe7JE0byx...	78.0 KiB	72.5 KiB

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: 80 ms 447.8 KiB

URL	Transfer Size	Est Savings
www.googletagmanager.com/gtag/js?id=G-6RMD5F01JZ&cx=c&gtm=4e64k1	157.2 KiB	65.6 KiB
www.googletagmanager.com/gtm.js?id=GTM-56KVS72	179.4 KiB	61.1 KiB
www.googletagmanager.com/gtag/js?id=G-WEC3LEBYC9&cx=c&gtm=4e64k1	171.6 KiB	59.0 KiB
aamc.tfaforms.net/wForms/3.11/js/wforms.js	83.9 KiB	58.6 KiB
/sites/default/files/js/js_0pQ4-3upvNFJx2BwDmd6MF6mSnE3J4...	90.4 KiB	55.7 KiB
/sites/default/files/js/js_5Zl9LscdZ3Nf0YS_nPGZRBsDFXf_fE...	83.2 KiB	55.2 KiB
www.googletagmanager.com/gtag/destination?id=AW-746638938&cx=c&gtm=4e64k1	146.1 KiB	55.1 KiB
script.hotjar.com/modules.6a0f3932cb1341a35c18.js	56.1 KiB	37.6 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.

URL	Transfer Size
www.aamc.org/sites/default/files/2026-01/WeAreAAMC6%201.webm	6.8 MiB
www.aamc.org/sites/default/files/We%20Are%20the%20AAMC%20Thumbnail.jpg	404.8 KiB
www.googletagmanager.com/gtm.js?id=GTM-56KVS72	179.7 KiB
www.googletagmanager.com/gtag/js?id=G-WEC3LEBYC9&cx=c&gtm=4e64k1	171.6 KiB
www.googletagmanager.com/gtag/js?id=G-6RMD5F01JZ&cx=c&gtm=4e64k1	157.3 KiB
www.googletagmanager.com/gtag/destination?id=AW-746638938&cx=c&gtm=4e64k1	146.2 KiB
/sites/default/files/css/css_Vy72AoZsGlPBiug0-qDqe7JE0byx...	101.5 KiB
/sites/default/files/js/js_0pQ4-3upvNFJx2BwDmd6MF6mSnE3J4...	90.7 KiB
aamc.tfaforms.net/wForms/3.11/js/wforms.js	84.2 KiB
/sites/default/files/js/js_5Zl9LscdZ3Nf0YS_nPGZRBsDFXf_fE...	83.4 KiB

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

●LCP breakdown

●Modern HTTP

●Optimize viewport for mobile

●Minify CSS

●Minify JavaScript

●User Timing marks and measures 19 user timings

●JavaScript execution time 0.8 s

●Minimizes main-thread work 1.5 s

●Avoid long main-thread tasks 5 long tasks found

●Avoid non-composited animations 5 animated elements found

●Image elements have explicit `width` and `height`

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 30 ms

●Server Backend Latencies 60 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 0 ms

●Avoid large layout shifts 1 layout shift found

○INP breakdown

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

Some ARIA parent roles must contain specific child roles to perform their intended accessibility functions. Learn more about roles and required children elements.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Contact Us AAMC Communities Network Sign up for AAMC Newsletters View all Socia… `nav > ul.footer-menu-columns > li.footer-menu-columns__block > ul.footer-menu-columns__block__menu`

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.

○Interactive controls are keyboard focusable

○Interactive elements indicate their purpose and state

○The page has a logical tab order

○Visual order on the page follows DOM order

○User focus is not accidentally trapped in a region

○The user's focus is directed to new content added to the page

○HTML5 landmark elements are used to improve navigation

○Offscreen content is hidden from assistive technology

○Custom controls have associated labels

○Custom controls have ARIA roles

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

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

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

●`[role]` values are valid

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

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

●Buttons have an accessible name

●Input buttons have discernible text.

●Form elements have associated labels

●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.

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

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

●Elements use only permitted ARIA attributes

●Background and foreground colors have a sufficient contrast ratio

●Document has a `<title>` element

●`<html>` element has a `[lang]` attribute

●`<html>` element has a valid value for its `[lang]` attribute

●Links have a discernible name

●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).

●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements

●Touch targets have sufficient size and spacing.

●Heading elements appear in a sequentially-descending order

●Document has a main landmark.

●Deprecated ARIA roles were not used

●`<video>` elements contain a `<track>` element with `[kind="captions"]`

●Elements with visible text labels have matching accessible names.

○`[accesskey]` values are unique

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

○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

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

○Elements with the `role=text` attribute do not have focusable descendents.

○ARIA toggle fields have accessible names

○ARIA `tooltip` elements have accessible names

○ARIA `treeitem` elements have accessible names

○The page contains a heading, skip link, or landmark region

○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.

○Definition list items are wrapped in `<dl>` elements

○ARIA IDs are unique

○No form fields have multiple labels

○`<frame>` or `<iframe>` elements have a title

○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.

○Image elements have `[alt]` attributes

○`<input type="image">` elements have `[alt]` text

○Links are distinguishable without relying on color.

○The document does not use `<meta http-equiv="refresh">`

○`<object>` elements have alternate text

○Select elements have associated label elements.

○Skip links are focusable.

○No element has a `[tabindex]` value greater than 0

○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

○Image elements do not have `[alt]` attributes that are redundant text.

○Identical links have the same purpose.

○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.

Best Practices

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 / Warning	Source
AttributionReporting	snap.licdn.com/li.lms-analytics/insight.min.js

●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

●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

●Document has a valid `hreflang`

●Document has a valid `rel=canonical`

○Image elements have `[alt]` attributes