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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.

28

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
frontend.medicare.gov/assets/index-f075554a.js2561.0 s374.9 KiB
/5CYs-zzZKIiXl/pJe/HE50060EFo4/OSwOzQOSuzizct5p/Fl0XSl4/C...21600.0 s178.0 KiB
www.medicare.gov/static/2d23bc785173354994b8f762fa69d172d6750013ed7077600.0 s58.2 KiB
frontend.medicare.gov/assets/index-be3a1ae0.css584.0 s55.7 KiB
tealium-tags.medicare.gov/medicare-www/prod/utag.js1.0 s40.0 KiB
/jfe/themes/skins/medicare/medicare1/version-171449137436...0.0 ms32.6 KiB
/static/2d23bc785173354994b8f762fa69d172d6750013ed7077/e/...600.0 s33.0 KiB
ads.nextdoor.com/v2/public/pixel/advmtch.js600.0 s23.6 KiB
frontend.medicare.gov/assets/sourcesanspro-regular-webfont-8792619b.woff2971.0 s20.4 KiB
ads.nextdoor.com/public/pixel/ndp.js600.0 s18.9 KiB
/static/2d23bc785173354994b8f762fa69d172d6750013ed7077/e/...600.0 s18.7 KiB
cdn1.adoberesources.net/alloy/2.6.4/alloy.min.js3600.0 s20.0 KiB
tealium-tags.medicare.gov/medicare-www/prod/utag.sync.js1.0 s12.9 KiB
/Universal-Federated-Analytics-Min.js?agency=DHHS&subagen...0.0 ms9.4 KiB
/dxjsmodule/5.17c364950fcb67448399.chunk.js?Q_CLIENTVERSI...604800.0 s73.5 KiB
/static/2d23bc785173354994b8f762fa69d172d6750013ed7077/e/...600.0 s7.3 KiB
/utag/cmsgov/medicare-www/prod/utag.220.js?utv=ut4.47.202...300.0 s6.2 KiB
/utag/cmsgov/medicare-www/prod/utag.215.js?utv=ut4.47.202...300.0 s5.8 KiB
/jfe/themes/skins/medicare/medicare1/version-171449137436...0.0 ms5.2 KiB
apps.use2.us-gov-pure.cloud/journey/messenger-plugins/offersHelper.min.js600.0 s5.5 KiB
dap.digitalgov.gov/web-vitals/dist/web-vitals.attribution.iife.js0.0 ms4.6 KiB
frontend.medicare.gov/assets/medicare-logo-green-6a40fc58.svg2047.0 s4.9 KiB
/SIE/?Q_ZID=ZN_56jL522eC1a1WZf&Q_LOC=https%3A%2F%2Fwww.me...3600.0 s4.8 KiB
/dxjsmodule/17.5339c461e1518fcc3620.chunk.js?Q_CLIENTVERS...604800.0 s38.1 KiB
/dxjsmodule/12.1a2b7192fd54e87d3971.chunk.js?Q_CLIENTVERS...604800.0 s36.5 KiB
/dxjsmodule/CoreModule.js?Q_CLIENTVERSION=2.46.0&Q_CLIENT...604800.0 s31.6 KiB
/utag/cmsgov/medicare-www/prod/utag.377.js?utv=ut4.47.202...300.0 s3.0 KiB
/utag/cmsgov/medicare-www/prod/utag.353.js?utv=ut4.47.202...300.0 s2.7 KiB
/static/2d23bc785173354994b8f762fa69d172d6750013ed7077/e/...600.0 s2.3 KiB
/dxjsmodule/37.7ea1ffe71ad8c0799cc1.chunk.js?Q_CLIENTVERS...604800.0 s19.2 KiB
/utag/cmsgov/medicare-www/prod/utag.321.js?utv=ut4.47.202...300.0 s1.8 KiB
/utag/cmsgov/medicare-www/prod/utag.299.js?utv=ut4.47.202...300.0 s1.7 KiB
tags.tiqcdn.com/utag/cmsgov/medicare-www/prod/utag.8.js?utv=ut4.47.202412111611300.0 s1.5 KiB
analytics-sm.com/js/v1/beacon.js600.0 s1.5 KiB
/jfe/themes/base-css/basestylesv4/version-1678899450557-8...0.0 ms1.3 KiB
/utag/cmsgov/medicare-www/prod/utag.194.js?utv=ut4.47.202...300.0 s1.4 KiB
/utag/cmsgov/medicare-www/prod/utag.266.js?utv=ut4.47.202...300.0 s1.4 KiB
/utag/cmsgov/medicare-www/prod/utag.336.js?utv=ut4.47.202...300.0 s1.3 KiB
/utag/cmsgov/medicare-www/prod/utag.395.js?utv=ut4.47.202...300.0 s1.3 KiB
/dxjsmodule/WebResponsiveDialogModule.js?Q_CLIENTVERSION=...604800.0 s12.4 KiB
tags.tiqcdn.com/utag/cmsgov/medicare-www/prod/utag.9.js?utv=ut4.47.202103221631300.0 s1.2 KiB
frontend.medicare.gov/assets/Icon_Chat-f1ad62dd.svg897.0 s998 B
/dxjsmodule/1.bc67e778235741631577.chunk.js?Q_CLIENTVERSI...604800.0 s7.8 KiB
frontend.medicare.gov/assets/Log_In-b51e10d7.svg2127.0 s866 B
/1/642335d5b5?a=145488977&sa=1&v=1123.df1c7f8&t=Unnamed%2...0.0 ms679 B
frontend.medicare.gov/assets/icon-dot-gov-54f6653a.svg1956.0 s707 B
frontend.medicare.gov/assets/icon-https-912daff9.svg2352.0 s674 B
frontend.medicare.gov/assets/chevron-c0537455.svg1310.0 s638 B
/utag/tiqapp/utag.v.js?a=cmsgov/medicare-www/202604151335...300.0 s431 B
match.adsrvr.org/track/cmb/rubicon?gdpr=00.0 ms254 B
match.adsrvr.org/track/cmb/rubicon?gdpr=00.0 ms254 B
/track/cmb/generic?ttd_pid=tealium&ttd_tpi=1&gdpr=0&domai...0.0 ms254 B
/track/cmb/appnexus?ttd=1&anid=499977745501234107&ttd_tdi...0.0 ms254 B
/dxjsmodule/7.f7df015b06d8a90ce822.chunk.js?Q_CLIENTVERSI...604800.0 s2.0 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLEst Savings
www.medicare.gov/libraries/fontawesome/webfonts/fa-solid-900.woff275 ms
frontend.medicare.gov/assets/sourcesanspro-regular-webfont-8792619b.woff220 ms
fonts.cdnfonts.com/css/montserrat.woff15 ms
fonts.cdnfonts.com/css/rubik.woff215 ms
/jfe/themes/base-css/basestylesv4/version-1678899450557-8...15 ms

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:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:81.929 source:map[column:245599 line:0 type:source-location url:https://www.medicare.gov/5CYs-zzZKIiXl/pJe/HE50060EFo4/OSwOzQOSuzizct5p/Fl0XSl4/CX4IW2x/xd1QB urlProvider:network]] map[reflowTime:0.246 source:map[column:154973 line:19 type:source-location url:https://gov1.siteintercept.qualtrics.com/dxjsmodule/5.17c364950fcb67448399.chunk.js?Q_CLIENTVERSION=2.46.0&Q_CLIENTTYPE=web&Q_BRANDID=medicare urlProvider:network]] map[reflowTime:0.22 source:map[column:14345 line:19 type:source-location url:https://gov1.siteintercept.qualtrics.com/dxjsmodule/5.17c364950fcb67448399.chunk.js?Q_CLIENTVERSION=2.46.0&Q_CLIENTTYPE=web&Q_BRANDID=medicare urlProvider:network]]]

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-SECTION
nodeLabel: Welcome to Medicare Get Started
path: 1,HTML,1,BODY,1,DIV,1,DIV,0,DIV,1,DIV,1,DIV,0,MAIN,0,DIV,0,DIV,0,ARTICLE,0,DIV,0,SECTION
selector: div#block-medicare-evo-content > article.layout-homepage > div.layout-homepage__upper > section.homepage-hero
snippet: <section class="homepage-hero " data-component-id="medicare_evo:homepage-hero">

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.

URLTransfer SizeDuration
www.medicare.gov/static/2d23bc785173354994b8f762fa69d172d6750013ed707758.2 KiB757 ms
www.medicare.gov/libraries/fontawesome/css/fontawesome.min.css?tdv0dd3.1 KiB151 ms
tealium-tags.medicare.gov/medicare-www/prod/utag.sync.js12.9 KiB1.0 s
/sites/default/files/css/css_15Bv3ciCGjF4FfsusVGo0ZkjaOae...28.7 KiB606 ms
frontend.medicare.gov/assets/index-be3a1ae0.css55.7 KiB1.4 s
/sites/default/files/css/css_Ju4p2lXo9klt35vrWknHx29aIuJ2...6.6 KiB
www.medicare.gov/libraries/fontawesome/css/solid.min.css?tdv0dd893 B

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.layout-homepage__upper > section.homepage-hero > div.homepage-hero__image > img.image div.layout-homepage__upper > section.homepage-hero > div.homepage-hero__image > img.image
/sites/default/files/styles/hero_image_775/public/resized...63.4 KiB57.8 KiB
article.initiative > div.initiative__media > div.initiative__media-container > img.image article.initiative > div.initiative__media > div.initiative__media-container > img.image
/sites/default/files/styles/16_9_1072x602/public/resized ...46.4 KiB39.6 KiB
white senior lady in a dark shirt looking at paperwork and a PC article.initiative > div.initiative__media > div.initiative__media-container > img.image
/sites/default/files/styles/16_9_1072x602/public/shutters...24.7 KiB21.0 KiB
article.initiative > div.initiative__media > div.initiative__media-container > img.image article.initiative > div.initiative__media > div.initiative__media-container > img.image
/sites/default/files/styles/16_9_1072x602/public/20250610...22.7 KiB19.3 KiB
h2.link-list__title > button.link-list__toggle > span.link-list__toggle-icon > ::before h2.link-list__title > button.link-list__toggle > span.link-list__toggle-icon > ::before
/jfe/themes/skins/medicare/medicare1/version-171449137436...4.9 KiB4.2 KiB

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

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: 779 ms
URLTime Spent
medicare.gov/779 ms
www.medicare.gov/0.0 ms

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

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: 300 ms 67.3 KiB
URLTransfer SizeEst Savings
apps.use2.us-gov-pure.cloud/genesys-bootstrap/genesys.min.js155.6 KiB67.3 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: 450 ms 74.9 KiB
URLTransfer SizeEst Savings
frontend.medicare.gov/assets/index-be3a1ae0.css55.4 KiB52.4 KiB
/sites/default/files/css/css_15Bv3ciCGjF4FfsusVGo0ZkjaOae...28.1 KiB22.5 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: 3.0 s 628.2 KiB
URLTransfer SizeEst Savings
frontend.medicare.gov/assets/index-f075554a.js371.3 KiB212.9 KiB
www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L&cx=c&gtm=4e64h1147.1 KiB106.0 KiB
apps.use2.us-gov-pure.cloud/genesys-bootstrap/genesys.min.js155.6 KiB79.5 KiB
www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L147.1 KiB61.3 KiB
/dxjsmodule/5.17c364950fcb67448399.chunk.js?Q_CLIENTVERSI...72.8 KiB54.1 KiB
www.googletagmanager.com/gtag/js?id=DC-4468676129.4 KiB53.7 KiB
/5CYs-zzZKIiXl/pJe/HE50060EFo4/OSwOzQOSuzizct5p/Fl0XSl4/C...176.7 KiB36.2 KiB
/sites/default/files/js/js_CCSofqacZwVOjNeWP9UehFpnD5jRzv...42.9 KiB24.5 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.medicare.gov/2.0 s1.2 s0.5 ms
/5CYs-zzZKIiXl/pJe/HE50060EFo4/OSwOzQOSuzizct5p/Fl0XSl4/C...1.3 s766 ms67 ms
Unattributable1.1 s121 ms0.0 ms
www.medicare.gov/static/2d23bc785173354994b8f762fa69d172d6750013ed70771.1 s926 ms22 ms
frontend.medicare.gov/assets/index-f075554a.js560 ms383 ms173 ms
apps.use2.us-gov-pure.cloud/genesys-bootstrap/genesys.min.js524 ms401 ms97 ms
/dxjsmodule/5.17c364950fcb67448399.chunk.js?Q_CLIENTVERSI...521 ms479 ms32 ms
www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L391 ms338 ms50 ms
www.googletagmanager.com/gtag/js?id=DC-4468676361 ms310 ms47 ms
/dxjsmodule/12.1a2b7192fd54e87d3971.chunk.js?Q_CLIENTVERS...147 ms121 ms16 ms
tealium-tags.medicare.gov/medicare-www/prod/utag.js114 ms58 ms21 ms
cdn1.adoberesources.net/alloy/2.6.4/alloy.min.js97 ms87 ms8.7 ms
www.medicare.gov/libraries/fontawesome/js/brands.min.js?v=6.4.295 ms30 ms1.0 ms
ads.nextdoor.com/public/pixel/ndp.js88 ms84 ms2.4 ms
/utag/cmsgov/medicare-www/prod/utag.220.js?utv=ut4.47.202...87 ms48 ms2.6 ms
/static/2d23bc785173354994b8f762fa69d172d6750013ed7077/e/...81 ms73 ms7.1 ms
www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L&cx=c&gtm=4e64h180 ms28 ms51 ms
/sites/default/files/js/js_CCSofqacZwVOjNeWP9UehFpnD5jRzv...66 ms47 ms16 ms
www.medicare.gov/libraries/fontawesome/js/solid.min.js?v=6.4.264 ms50 ms3.6 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 Evaluation6.0 s
Other1.5 s
Script Parsing & Compilation743 ms
Style & Layout743 ms
Garbage Collection153 ms
Parse HTML & CSS103 ms
Rendering85 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
The page has an unload handler in the main frame.Actionable
The page has an unload handler in a sub frame.Actionable

Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer Size
frontend.medicare.gov/assets/index-f075554a.js374.9 KiB
apps.use2.us-gov-pure.cloud/messenger/muiVendor.min.js198.4 KiB
/5CYs-zzZKIiXl/pJe/HE50060EFo4/OSwOzQOSuzizct5p/Fl0XSl4/C...178.0 KiB
apps.use2.us-gov-pure.cloud/genesys-bootstrap/genesys.min.js156.1 KiB
www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L147.2 KiB
www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L&cx=c&gtm=4e64h1147.1 KiB
www.googletagmanager.com/gtag/js?id=DC-4468676129.7 KiB
apps.use2.us-gov-pure.cloud/messenger/main.min.js93.0 KiB
apps.use2.us-gov-pure.cloud/messenger/messengerrenderer.min.js91.8 KiB
surveys.cms.gov/jfe/static/dist/jfe.4cd8912bfd30a89608ff.min.js89.2 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL
Medicare.gov header > div.ch-c-gov-and-menu-wrapper__wrapper > a.nav-menu-button > img.medicare-logo
frontend.medicare.gov/assets/medicare-logo-green-6a40fc58.svg
body.path-index > div.QSI_ScreenCapture > div > img body.path-index > div.QSI_ScreenCapture > div > img
/WRQualtricsShared/Graphics/siteintercept/building_previe...
U.S. flag header.usa-banner__header > div.usa-banner__inner > div.grid-col-auto > img.usa-banner__header-flag

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

●Layout shift culprits
●Optimize DOM size
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●User Timing marks and measures 9 user timings
●Avoid long main-thread tasks 20 long tasks found
●Network Requests
●Network Round Trip Times 70 ms
●Server Backend Latencies 190 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 110 ms
●Avoid large layout shifts 3 layout shifts found
○INP breakdown
○Avoid non-composited animations
97

Accessibility

These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.

Names and labels

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.QSIWebResponsive-creative-container-fade > div.QSIWebResponsiveDialog-Layout1-SI_6tbIx8xW9ShoDfU_content > div.QSIWebResponsiveDialog-Layout1-SI_6tbIx8xW9ShoDfU_embedded-target-container > iframe div.QSIWebResponsive-creative-container-fade > div.QSIWebResponsiveDialog-Layout1-SI_6tbIx8xW9ShoDfU_content > div.QSIWebResponsiveDialog-Layout1-SI_6tbIx8xW9ShoDfU_embedded-target-container > iframe

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.

○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
●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
●Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
●`[aria-hidden="true"]` elements do not contain focusable descendents
●Elements use only permitted ARIA attributes
●Background and foreground colors have a sufficient contrast ratio
●Document has a `<title>` element
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●Links are distinguishable without relying on color.
●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
●No element has a `[tabindex]` value greater than 0
●Touch targets have sufficient size and spacing.
●`[lang]` attributes have a valid value
●Heading elements appear in a sequentially-descending order
●Document has a main landmark.
●Deprecated ARIA roles were not used
●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
○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
○`<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.
○`<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.
○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.
77

Best Practices

User Experience

Image natural dimensions should be proportional to the display size and the pixel ratio to maximize image clarity. Learn how to provide responsive images.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLDisplayed sizeActual sizeExpected size
U.S. flag header.usa-banner__header > div.usa-banner__inner > div.grid-col-auto > img.usa-banner__header-flag
16 x 1116 x 1124 x 17

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
Unload event listeners are deprecated and will be removed.
www.medicare.gov/static/2d23bc785173354994b8f762fa69d172d6750013ed7077 line 140, col 127

Source maps translate minified code to the original source code. This helps developers debug in production. In addition, Lighthouse is able to provide further insights. Consider deploying source maps to take advantage of these benefits. Learn more about source maps.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLMap URL
/5CYs-zzZKIiXl/pJe/HE50060EFo4/OSwOzQOSuzizct5p/Fl0XSl4/C...
frontend.medicare.gov/assets/index-f075554a.js
/Universal-Federated-Analytics-Min.js?agency=DHHS&subagen...dap.digitalgov.gov/Federated.js.map
apps.use2.us-gov-pure.cloud/genesys-bootstrap/genesys.min.jsapps.use2.us-gov-pure.cloud/genesys-bootstrap/genesys.min.js.map
●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
●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
●Ensure proper origin isolation with COOP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
○Redirects HTTP traffic to HTTPS
○Use a strong HSTS policy
○Mitigate clickjacking with XFO or CSP
92

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.

Link destinationLink Text
www.medicare.gov/about-us/accessibility-nondiscrimination-noticeLearn More

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

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