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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.

29

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
/kentico/bundles/pageComponents/scripts?v=pRVF8QjC7E6RSR5...14400.0 s237.1 KiB
/kentico/bundles/forms/scripts?v=9f0F8pnbgylbAp00nyCSId7o...14400.0 s187.7 KiB
connect.facebook.net/en_US/fbevents.js1200.0 s96.6 KiB
/optimize/getmedia/ef76ac96-993d-448b-bb5b-3d1e17589972/s...14400.0 s97.4 KiB
cdn.fundraiseup.com/widget/AJCPTCHU0.0 ms64.7 KiB
/kentico/bundles/jquery?v=QKUPSia3ECT_E95si24LagQNjDmMyla...14400.0 s40.0 KiB
cdn.mouseflow.com/projects/2685518b-bc6c-422c-8192-19a914616903.js86400.0 s52.2 KiB
www.redditstatic.com/ads/pixel.js60.0 s19.0 KiB
js.adsrvr.org/up_loader.1.1.0.js0.0 ms12.3 KiB
www.lung.org/cdn-cgi/challenge-platform/h/b/scripts/jsd/0b8fb825cb67/main.js?14400.0 s12.7 KiB
/signals/config/427055587939441?v=2.9.303&r=stable&domain...1200.0 s6.6 KiB
/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312...86400.0 s10.7 KiB
cdn.userway.org/widget.js3600.0 s1.6 KiB
/st?ga_tracking_id=G-3JFTBZB242%3BG-P13PC1PGW8%3BUA-22287...0.0 ms1.2 KiB
/kentico/bundles/jquery-unobtrusive-ajax?v=yWiSJlfkRWGOtj...14400.0 s1.5 KiB
js.adsrvr.org/universal_pixel.js0.0 ms935 B
static.addtoany.com/menu/page.js86400.0 s2.2 KiB
/rp.gif?ts=1776815232479&id=t2_dc30ore4q&event=ViewConten...0.0 ms666 B
/st?ga_tracking_id=G-3JFTBZB242%3BG-P13PC1PGW8%3BUA-22287...0.0 ms581 B
cdn.userway.org/styles/2026-04-14-10-40-20/widget_base.css?v=1776163220800864000.0 s5.4 KiB
www.gstatic.com/recaptcha/api2/logo_48.png604800.0 s2.3 KiB
cdn.fundraiseup.com/embed-data/elements-global/AJCPTCHU.js0.0 ms152 B
insight.adsrvr.org/track/pxl/?adv=k03bhy0&ct=0:wzpq3hi&fmt=30.0 ms149 B
/pixel/?ad_log=referer&action=lead&pixid=7b96fa69-da41-43...0.0 ms131 B
/rp.gif?ts=1776815232472&id=t2_dc30ore4q&event=PageVisit&...0.0 ms76 B
/v.gif?cd=0&a=1025125&d=lung.org&u=DF9CA5E3C27519CAD9BEFD...43200.0 s147 B
cdn.userway.org/styles/2026-04-14-10-40-20/widget_base.css?v=1776163220800864000.0 s0 B
cdn.userway.org/styles/2026-04-14-10-40-20/widget_base.css?v=1776163220800864000.0 s0 B
cdn.userway.org/styles/2026-04-14-10-40-20/widget_base.css?v=1776163220800864000.0 s0 B
cdn.userway.org/styles/2026-04-14-10-40-20/widget_base.css?v=1776163220800864000.0 s0 B
www.gstatic.com/recaptcha/api2/logo_48.png604800.0 s0 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.

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.

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:29.678 source:map[column:29670 line:2 type:source-location url:https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js 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:219.688 source:map[type:text value:[unattributed]]] map[reflowTime:3.863 source:map[column:51415 line:1 type:source-location url:https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js urlProvider:network]] map[reflowTime:0.703 source:map[column:50673 line:1 type:source-location url:https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js urlProvider:network]] map[reflowTime:0.369 source:map[column:50731 line:1 type:source-location url:https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js urlProvider:network]] map[reflowTime:0.433 source:map[column:50793 line:1 type:source-location url:https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js urlProvider:network]] map[reflowTime:0.074 source:map[column:54492 line:1 type:source-location url:https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js urlProvider:network]] map[reflowTime:5.258 source:map[column:153974 line:0 type:source-location url:https://www.lung.org/dist/home.min.js?v=55260016-03ef-435b-999f-50101db22f4f_5e8e9a4d184f22b3027844a7c3053344 urlProvider:network]] map[reflowTime:22.092 source:map[column:51393 line:1 type:source-location url:https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js urlProvider:network]] map[reflowTime:1.41 source:map[column:151357 line:0 type:source-location url:https://www.lung.org/dist/home.min.js?v=55260016-03ef-435b-999f-50101db22f4f_5e8e9a4d184f22b3027844a7c3053344 urlProvider:network]] map[reflowTime:9.614 source:map[column:98099 line:17 type:source-location url:https://cdn.mouseflow.com/projects/2685518b-bc6c-422c-8192-19a914616903.js urlProvider:network]] map[reflowTime:5.684 source:map[column:55 line:877 type:source-location url:https://www.googletagmanager.com/gtag/js?id=G-P13PC1PGW8&cx=c&gtm=4e64h1 urlProvider:network]] map[reflowTime:0.642 source:map[column:107296 line:17 type:source-location url:https://cdn.mouseflow.com/projects/2685518b-bc6c-422c-8192-19a914616903.js urlProvider:network]] map[reflowTime:2.155 source:map[column:38667 line:17 type:source-location url:https://cdn.mouseflow.com/projects/2685518b-bc6c-422c-8192-19a914616903.js urlProvider:network]] map[reflowTime:2.664 source:map[column:332 line:412 type:source-location url:https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.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
Woman in orange sweater hugs her arms and looks to the sky against coastal sunr… main#main > div.hero > div.hero-content > img.d-block
/optimize/getmedia/ef76ac96-993d-448b-bb5b-3d1e17589972/s...97.1 KiB40.7 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-0-IMG
nodeLabel: Woman in orange sweater hugs her arms and looks to the sky against coastal sunr…
path: 1,HTML,1,BODY,10,MAIN,0,DIV,0,DIV,2,IMG
selector: main#main > div.hero > div.hero-content > img.d-block
snippet: <img alt="Woman in orange sweater hugs her arms and looks to the sky against coastal…" class="d-block d-md-none js-lazy js-webp" data-image="/optimize/getmedia/ef76ac96-993d-448b-bb5b-3d1e17589972/sweater_hug_am.jpg…" data-image-webp="/optimize/getmedia/ef76ac96-993d-448b-bb5b-3d1e17589972/sweater_hug_am.jpg…" src="/optimize/getmedia/ef76ac96-993d-448b-bb5b-3d1e17589972/sweater_hug_am.jpg…" data-uw-rm-alt-original="Woman in orange sweater hugs her arms and looks to the sky against coastal…" data-uw-rm-alt="ALT">

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

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.

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.

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: 879 ms
URLTime Spent
lung.org/879 ms
www.lung.org/0.0 ms

Diagnostics

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: 450 ms 89.2 KiB

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: 1.1 s 190.3 KiB
URLTransfer SizeEst Savings
/dist/home.min.css?v=55260016-03ef-435b-999f-50101db22f4f...198.9 KiB190.3 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: 7.4 s 2.5 MiB
URLTransfer SizeEst Savings
static.fundraiseup.com/checkout.9e2624d0be733d7f.js410.2 KiB365.9 KiB
www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js361.8 KiB244.4 KiB
/kentico/bundles/pageComponents/scripts?v=pRVF8QjC7E6RSR5...237.0 KiB207.2 KiB
www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js361.8 KiB176.5 KiB
/dist/home.min.js?v=55260016-03ef-435b-999f-50101db22f4f_...268.3 KiB170.5 KiB
/kentico/bundles/pageComponents/scripts?v=pRVF8QjC7E6RSR5...237.0 KiB165.7 KiB
/kentico/bundles/forms/scripts?v=9f0F8pnbgylbAp00nyCSId7o...187.6 KiB142.7 KiB
/kentico/bundles/forms/scripts?v=9f0F8pnbgylbAp00nyCSId7o...187.6 KiB142.6 KiB
static.fundraiseup.com/checkout-sentry-vendor.dda4c7629502a974.js111.7 KiB111.7 KiB
/_/translate_http/_/js/k=translate_http.tr.nl.2-2JqXXxIUQ...118.2 KiB92.2 KiB
static.fundraiseup.com/checkout-vendors.78ab7844d94042df.js105.2 KiB87.4 KiB
www.googletagmanager.com/gtag/destination?id=AW-16692913250&cx=c&gtm=4e64h1134.1 KiB67.1 KiB
www.googletagmanager.com/gtag/js?id=G-P13PC1PGW8&cx=c&gtm=4e64h1168.0 KiB65.4 KiB
www.googletagmanager.com/gtag/js?id=AW-863692700&cx=c&gtm=4e64h1146.5 KiB61.4 KiB
www.googletagmanager.com/gtag/js?id=AW-1063344903&cx=c&gtm=4e64h1144.5 KiB56.5 KiB
www.googletagmanager.com/gtag/js?id=DC-14823050&cx=c&gtm=4e64h1130.9 KiB55.3 KiB
www.googletagmanager.com/gtag/js?id=DC-14825237&cx=c&gtm=4e64h1131.3 KiB54.5 KiB
www.googletagmanager.com/gtm.js?id=GTM-P37QJ4190.8 KiB52.0 KiB
connect.facebook.net/en_US/fbevents.js96.5 KiB43.9 KiB
/kentico/bundles/jquery?v=QKUPSia3ECT_E95si24LagQNjDmMyla...39.8 KiB27.2 KiB
/kentico/bundles/jquery?v=QKUPSia3ECT_E95si24LagQNjDmMyla...39.8 KiB27.2 KiB
c.la2-c1-ph2.salesforceliveagent.com/content/g/js/47.0/deployment.js41.7 KiB26.6 KiB
cdn.mouseflow.com/projects/2685518b-bc6c-422c-8192-19a914616903.js51.6 KiB23.3 KiB
static.fundraiseup.com/checkout-styles.fab72e48733dfd10.js22.3 KiB22.3 KiB
cdn.fundraiseup.com/widget/AJCPTCHU63.9 KiB22.1 KiB
static.addtoany.com/menu/modules/core.ydpp7jcu.js25.7 KiB21.0 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
www.lung.org/3.7 s109 ms29 ms
www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js3.5 s2.7 s645 ms
Unattributable1.9 s289 ms0.0 ms
/dist/home.min.js?v=55260016-03ef-435b-999f-50101db22f4f_...1.5 s977 ms123 ms
www.googletagmanager.com/gtm.js?id=GTM-P37QJ41.3 s1.0 s122 ms
cdn.mouseflow.com/projects/2685518b-bc6c-422c-8192-19a914616903.js874 ms730 ms24 ms
ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js855 ms643 ms13 ms
www.googletagmanager.com/gtag/js?id=DC-14823050&cx=c&gtm=4e64h1845 ms770 ms66 ms
www.googletagmanager.com/gtag/js?id=AW-863692700&cx=c&gtm=4e64h1718 ms512 ms76 ms
www.googletagmanager.com/gtag/js?id=G-P13PC1PGW8&cx=c&gtm=4e64h1630 ms515 ms82 ms
www.googletagmanager.com/gtag/js?id=AW-1063344903&cx=c&gtm=4e64h1604 ms524 ms76 ms
cdn.userway.org/widgetapp/2026-04-14-10-40-20/widget_app_base_1776163220800.js601 ms429 ms31 ms
/kentico/bundles/pageComponents/scripts?v=pRVF8QjC7E6RSR5...594 ms163 ms428 ms
/kentico/bundles/forms/scripts?v=9f0F8pnbgylbAp00nyCSId7o...474 ms183 ms271 ms
www.googletagmanager.com/gtag/js?id=DC-14825237&cx=c&gtm=4e64h1435 ms375 ms57 ms
static.fundraiseup.com/checkout-vendors.78ab7844d94042df.js416 ms367 ms48 ms
www.lung.org/cdn-cgi/challenge-platform/scripts/jsd/main.js413 ms395 ms4.8 ms
/_/translate_http/_/js/k=translate_http.tr.nl.2-2JqXXxIUQ...369 ms252 ms87 ms
static.fundraiseup.com/checkout.9e2624d0be733d7f.js285 ms3.4 ms280 ms
www.googletagmanager.com/gtag/destination?id=AW-16692913250&cx=c&gtm=4e64h1282 ms219 ms61 ms
connect.facebook.net/en_US/fbevents.js281 ms217 ms59 ms
cdn.fundraiseup.com/widget/AJCPTCHU267 ms216 ms39 ms
www.lung.org/dist/babel.min.js?v=55260016-03ef-435b-999f-50101db22f4f166 ms147 ms19 ms
/kentico/bundles/jquery?v=QKUPSia3ECT_E95si24LagQNjDmMyla...156 ms96 ms49 ms
track.securedvisit.com/js/sv.js141 ms123 ms9.9 ms
/remediation/2026-04-14-10-40-20/paid/remediation-tool.js...140 ms113 ms21 ms
/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312...130 ms50 ms5.1 ms
/spx?dxver=4.0.0&shaid=32062&tdr=&plh=https%3A%2F%2Fwww.l...116 ms101 ms3.8 ms
static.addtoany.com/menu/page.js97 ms80 ms1.1 ms
/dist/home.min.css?v=55260016-03ef-435b-999f-50101db22f4f...96 ms0.0 ms0.0 ms
js.adsrvr.org/up_loader.1.1.0.js96 ms80 ms6.1 ms
www.redditstatic.com/ads/pixel.js88 ms71 ms10 ms
/widgetapp/2026-04-14-10-40-20/remediation/remediation_17...84 ms57 ms10 ms
/chat/rest/System/MultiNoun.jsonp?nouns=VisitorId,Setting...81 ms72 ms0.8 ms
static.fundraiseup.com/elementsApi.c0fc24ed4d35f527.js63 ms44 ms17 ms
static.fundraiseup.com/checkout-sentry-vendor.dda4c7629502a974.js51 ms1.2 ms49 ms
translate.google.com/translate_a/element.js?cb=googleTranslateElementInit50 ms38 ms12 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 Evaluation13.2 s
Other4.0 s
Script Parsing & Compilation2.9 s
Style & Layout1.9 s
Rendering505 ms
Garbage Collection372 ms
Parse HTML & CSS316 ms

Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL
American Lung Association Logo div.header-inner > div.header-inner-wrap > a.header-logo > img.no-lazy
www.lung.org/Content/images/header-logo.svg

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
Optimize viewport for mobile
Minify CSS
User Timing marks and measures 12 user timings
Avoid long main-thread tasks 20 long tasks found
Avoid non-composited animations 5 animated elements found
Page didn't prevent back/forward cache restoration
Network Requests
Network Round Trip Times 160 ms
Server Backend Latencies 690 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Initial server response time was short Root document took 260 ms
Avoid large layout shifts 1 layout shift found
INP breakdown
82

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
1 2 3 section.section > div.global-container > div.card-slider > ul.slick-dots
1 2 3 section.section > div.global-container > div.card-slider > ul.slick-dots

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
Email Address div.newsletter-before > form#responsiveSurvey-footer > div.input-group > input#footer-email-signup
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of … div.newsletter-before > form#responsiveSurvey-footer > div.input-group > div.grecaptcha-branding

Low-contrast text is difficult or impossible for many users to read. Link text that is discernible improves the experience for users with low vision. Learn how to make links distinguishable.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Privacy Policy form#responsiveSurvey-footer > div.input-group > div.grecaptcha-branding > a
Terms of Service form#responsiveSurvey-footer > div.input-group > div.grecaptcha-branding > a

These are opportunities to improve the legibility of your content.

Names and labels

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div > div.footer-logo > div.footer-logo-img > a.external div > div.footer-logo > div.footer-logo-img > a.external

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
1 div.card-slider > ul.slick-dots > li.slick-active > button#slick-slide-control00
2 div.card-slider > ul.slick-dots > li > button#slick-slide-control01
3 div.card-slider > ul.slick-dots > li > button#slick-slide-control02
1 div.card-slider > ul.slick-dots > li.slick-active > button#slick-slide-control10
2 div.card-slider > ul.slick-dots > li > button#slick-slide-control11
3 div.card-slider > ul.slick-dots > li > button#slick-slide-control12

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-*]` 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
Image elements have `[alt]` attributes
Form elements have associated labels
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
ARIA 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
Document has a `<title>` element
`<html>` element has a `[lang]` attribute
`<html>` element has a valid value for its `[lang]` attribute
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
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.
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

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
AttributionReporting

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
Error: Highcharts error #16: www.highcharts.com/errors/16/ at Object.<anonymous> (https://www.lung.org/kentico/bundles/pageComponents/scripts?v=pRVF8QjC7E6RSR52aMr6YHDr7QxWqlCEBVfDwD1zhUo1:87:282) at u (https://www.lung.org/kentico/bundles/pageComponents/scripts?v=pRVF8QjC7E6RSR52aMr6YHDr7QxWqlCEBVfDwD1zhUo1:107:37) at Object.e [as error] (https://www.lung.org/kentico/bundles/pageComponents/scripts?v=pRVF8QjC7E6RSR52aMr6YHDr7QxWqlCEBVfDwD1zhUo1:87:188) at https://www.lung.org/kentico/bundles/pageComponents/scripts?v=pRVF8QjC7E6RSR52aMr6YHDr7QxWqlCEBVfDwD1zhUo1:72:264 at https://www.lung.org/kentico/bundles/pageComponents/scripts?v=pRVF8QjC7E6RSR52aMr6YHDr7QxWqlCEBVfDwD1zhUo1:72:302
Uncaught TypeError: Cannot read properties of null (reading 'style')
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 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
Redirects HTTP traffic to HTTPS
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.

Content Best Practices

Descriptive link text helps search engines understand your content. Learn how to make links more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

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
Call the Lung HelpLine div.header-inner-wrap > div.header-info > div.header-info-phone > a.js-helpline-modal
Live Chat div.header-inner-wrap > div.header-info > div.header-info-links > a#liveagent-chat-link
Call the Lung HelpLine div.full-width-container > div.header-info > div.header-info-phone > a.js-helpline-modal
Live Chat div.full-width-container > div.header-info > div.header-info-links > a#liveagent-chat-link-mobile
Live Chat div.helpLineModal > div.help-line-modal > div.help-line-buttons > a#liveagent-chat-button

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

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
robots.txt is valid
Image elements have `[alt]` attributes
Document has a valid `hreflang`
Document has a valid `rel=canonical`

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