Lighthouse Mobile

· 0 checks — Mobile 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
/mhv-portal-web/o/mhv-portal-theme/fonts/fontawesome/fa-s...	0.0 ms	77.1 KiB
/mhv-portal-web/combo?browserId=other&minifierType=js&lan...	0.0 ms	75.6 KiB
/mhv-portal-web/combo?browserId=other&minifierType=js&lan...	0.0 ms	73.1 KiB
/mhv-portal-web/combo?browserId=other&minifierType=js&lan...	0.0 ms	70.3 KiB
/mhv-portal-web/combo/?browserId=other&minifierType=&lang...	0.0 ms	50.8 KiB
/mhv-portal-web/combo?browserId=other&minifierType=js&lan...	0.0 ms	34.6 KiB
/mhv-portal-web/o/mhv-portal-theme/fonts/source-sans-pro/...	0.0 ms	20.9 KiB
/mhv-portal-web/o/mhv-portal-theme/fonts/source-sans-pro/...	0.0 ms	20.7 KiB
/mhv-portal-web/combo/?browserId=other&minifierType=&lang...	0.0 ms	14.0 KiB
/mhv-portal-web/combo/?browserId=other&minifierType=&lang...	0.0 ms	12.0 KiB
/mhv-portal-web/combo/?browserId=other&minifierType=&lang...	0.0 ms	11.4 KiB
/mhv-portal-web/o/frontend-theme-font-awesome-web/css/mai...	0.0 ms	9.9 KiB
/Universal-Federated-Analytics-Min.js?ver=true&agency=VA&...	0.0 ms	9.4 KiB
/mhv-portal-web/combo/?browserId=other&minifierType=&lang...	0.0 ms	5.8 KiB
/mhv-portal-web/combo/?browserId=other&minifierType=&lang...	0.0 ms	4.9 KiB
www.myhealth.va.gov/mhv-portal-web/o/mhv-portal-theme/images/VCL-icon-white.svg	0.0 ms	2.8 KiB
/mhv-portal-web/combo/?browserId=other&minifierType=&lang...	0.0 ms	2.7 KiB
/mhv-portal-web/combo/?browserId=other&minifierType=&lang...	0.0 ms	2.7 KiB
www.myhealth.va.gov/mhv-portal-web/o/mhv-portal-theme/images/info.svg	0.0 ms	2.5 KiB
www.myhealth.va.gov/mhv-portal-web/o/mhv-portal-theme/images/close-white.svg	0.0 ms	2.0 KiB
/mhv-portal-web/combo/?browserId=other&minifierType=&lang...	0.0 ms	1.8 KiB
www.myhealth.va.gov/mhv-portal-web/o/mhv-portal-theme/images/icon-dot-gov.svg	0.0 ms	1.4 KiB
www.myhealth.va.gov/mhv-portal-web/o/mhv-portal-theme/images/plus-white.svg	0.0 ms	1.4 KiB
www.myhealth.va.gov/mhv-portal-web/o/mhv-portal-theme/images/icon-https.svg	0.0 ms	1.4 KiB
/mhv-portal-web/o/mhv-portal-theme/images/arrow-right-whi...	0.0 ms	1.2 KiB
/mhv-portal-web/o/mhv-portal-theme/images/angle-arrow-dow...	0.0 ms	1.2 KiB
/mhv-portal-web/combo/?browserId=other&minifierType=&lang...	0.0 ms	976 B
/mhv-portal-web/o/mhv-portal-theme/images/usa-icons/navig...	0.0 ms	909 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.

URL	Est Savings
/mhv-portal-web/o/mhv-portal-theme/fonts/fontawesome/fa-s...	275 ms
/mhv-portal-web/o/mhv-portal-theme/fonts/source-sans-pro/...	160 ms
/mhv-portal-web/o/mhv-portal-theme/fonts/source-sans-pro/...	160 ms

Each subpart has specific improvement strategies. Ideally, most of the LCP time should be spent on loading the resources, not within delays.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:label label:Subpart valueType:text] map[key:duration label:Duration valueType:ms]]

items: [map[duration:813.837 label:Time to first byte subpart:timeToFirstByte] map[duration:1698.068 label:Element render delay subpart:elementRenderDelay]]

lhId: page-0-P

nodeLabel: On June 4, 2025, we transitioned to the new My HealtheVet on VA.gov experience.…

path: 2,HTML,4,BODY,1,DIV,4,MAIN,0,DIV,0,DIV,0,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,1,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,DIV,0,DIV,0,DIV,1,P

selector: div.journal-content-article > div.usa-alert > div.usa-alert-body > p.usa-alert-text

snippet: <p class="usa-alert-text">

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
/mhv-portal-web/o/mhv-portal-theme/js/security-fixes.js?m...	1.5 KiB	310 ms
/mhv-portal-web/o/mhv-portal-theme/js/jquery-ui-1.13.2.mi...	66.9 KiB	2.1 s
/mhv-portal-web/o/mhv-portal-theme/css/main.css?browserId...	217.4 KiB	5.7 s
/mhv-portal-web/o/mhv-portal-theme/js/mhv.min.js?mhvv=202...	5.4 KiB	460 ms
/mhv-portal-web/o/mhv-portal-theme/js/datatables-2.1.6.mi...	46.1 KiB	1.8 s
/mhv-portal-web/o/mhv-portal-theme/js/jquery.touchSwipe-1...	5.8 KiB	460 ms
/mhv-portal-web/o/mhv-portal-theme/js/jquery-3.7.1.min.js...	30.5 KiB	1.4 s
/mhv-portal-web/combo?browserId=other&minifierType=js&lan...	70.3 KiB	2.7 s
/mhv-portal-web/combo?browserId=other&minifierType=&theme...	2.5 KiB	310 ms
/mhv-portal-web/combo?browserId=other&minifierType=js&lan...	34.6 KiB	1.5 s
/mhv-portal-web/combo?browserId=other&minifierType=js&lan...	75.6 KiB	2.9 s
www.myhealth.va.gov/mhv-portal-web/o/js_bundle_config?t=1777600673276	4.0 KiB	310 ms
/mhv-portal-web/combo?browserId=other&minifierType=js&lan...	73.1 KiB	2.9 s
www.myhealth.va.gov/mhv-portal-web/o/js_loader_config?t=1777600661684	1.1 KiB	310 ms
/mhv-portal-web/o/mhv-portal-theme/css/clay.css?browserId...	89.5 KiB	3.6 s
/mhv-portal-web/o/change-tracking-change-lists-indicator-...	1.4 KiB	310 ms
/mhv-portal-web/o/journal-content-web/css/main.css?browse...	1.5 KiB	310 ms
/mhv-portal-web/o/staging-bar-web/css/main.css?browserId=...	1.9 KiB	310 ms
/mhv-portal-web/o/com.liferay.product.navigation.user.per...	1.0 KiB	310 ms
/mhv-portal-web/o/portal-search-web/css/main.css?browserI...	1.2 KiB	310 ms
/mhv-portal-web/o/frontend-css-web/main.css?browserId=oth...	15.7 KiB	1.1 s
/mhv-portal-web/o/site-navigation-menu-web/css/main.css?b...	884 B	310 ms
www.myhealth.va.gov/ruxitagentjs_ICA7NVfgqrux_10335260306043831.js	81.7 KiB	3.2 s
/mhv-portal-web/o/asset-publisher-web/css/main.css?browse...	1.8 KiB	610 ms
/mhv-portal-web/o/announcements-web/announcements/css/mai...	1.0 KiB	610 ms
/mhv-portal-web/o/product-navigation-product-menu-web/css...	1.7 KiB	610 ms
/mhv-portal-web/o/frontend-theme-font-awesome-web/css/mai...	9.9 KiB	610 ms
/mhv-portal-web/o/frontend-css-web/portal/aui_deprecated....	6.3 KiB	460 ms
/Universal-Federated-Analytics-Min.js?ver=true&agency=VA&...	9.4 KiB	1.1 s

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.asset-abstract > div.asset-content > div.asset-summary > div.aspect-ratio `div.asset-abstract > div.asset-content > div.asset-summary > div.aspect-ratio`	/mhv-portal-web/documents/314545/444503/try-appointments-...	160.7 KiB	147.0 KiB
div.asset-abstract > div.asset-content > div.asset-summary > div.aspect-ratio `div.asset-abstract > div.asset-content > div.asset-summary > div.aspect-ratio`	/mhv-portal-web/documents/314545/444503/Try-Messages-on-V...	157.5 KiB	143.8 KiB
div.asset-abstract > div.asset-content > div.asset-summary > div.aspect-ratio `div.asset-abstract > div.asset-content > div.asset-summary > div.aspect-ratio`	/mhv-portal-web/documents/314545/0/try-medical-records.pn...	122.0 KiB	108.3 KiB

HTTP/2 and HTTP/3 offer many benefits over HTTP/1.1, such as multiplexing. Learn more about using modern HTTP.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Protocol
www.myhealth.va.gov/mhv-portal-web/home	http/1.1
www.myhealth.va.gov/ruxitagentjs_ICA7NVfgqrux_10335260306043831.js	http/1.1
/mhv-portal-web/combo?browserId=other&minifierType=js&lan...	http/1.1
/mhv-portal-web/o/frontend-theme-font-awesome-web/css/mai...	http/1.1
/mhv-portal-web/o/mhv-portal-theme/css/clay.css?browserId...	http/1.1
/mhv-portal-web/o/frontend-css-web/main.css?browserId=oth...	http/1.1
/mhv-portal-web/o/asset-publisher-web/css/main.css?browse...	http/1.1
/mhv-portal-web/o/announcements-web/announcements/css/mai...	http/1.1
/mhv-portal-web/o/product-navigation-product-menu-web/css...	http/1.1
/mhv-portal-web/o/site-navigation-menu-web/css/main.css?b...	http/1.1
/mhv-portal-web/o/portal-search-web/css/main.css?browserI...	http/1.1
/mhv-portal-web/o/com.liferay.product.navigation.user.per...	http/1.1
/mhv-portal-web/o/staging-bar-web/css/main.css?browserId=...	http/1.1
/mhv-portal-web/o/journal-content-web/css/main.css?browse...	http/1.1
www.myhealth.va.gov/mhv-portal-web/o/js_loader_config?t=1777600661684	http/1.1
/mhv-portal-web/combo?browserId=other&minifierType=js&lan...	http/1.1
/mhv-portal-web/combo?browserId=other&minifierType=js&lan...	http/1.1
/mhv-portal-web/combo?browserId=other&minifierType=js&lan...	http/1.1
www.myhealth.va.gov/mhv-portal-web/o/js_bundle_config?t=1777600673276	http/1.1
/mhv-portal-web/combo?browserId=other&minifierType=&theme...	http/1.1
/mhv-portal-web/o/mhv-portal-theme/css/main.css?browserId...	http/1.1
/mhv-portal-web/o/change-tracking-change-lists-indicator-...	http/1.1
/mhv-portal-web/o/mhv-portal-theme/js/jquery-3.7.1.min.js...	http/1.1
/mhv-portal-web/o/mhv-portal-theme/js/jquery-ui-1.13.2.mi...	http/1.1
/mhv-portal-web/o/mhv-portal-theme/js/jquery.touchSwipe-1...	http/1.1
/mhv-portal-web/o/mhv-portal-theme/js/datatables-2.1.6.mi...	http/1.1
/mhv-portal-web/o/mhv-portal-theme/js/mhv.min.js?mhvv=202...	http/1.1
/mhv-portal-web/o/mhv-portal-theme/js/security-fixes.js?m...	http/1.1
www.myhealth.va.gov/mhv-portal-web/o/mhv-portal-theme/images/us_flag_small.png	http/1.1
www.myhealth.va.gov/mhv-portal-web/o/mhv-portal-theme/images/icon-dot-gov.svg	http/1.1
www.myhealth.va.gov/mhv-portal-web/o/mhv-portal-theme/images/icon-https.svg	http/1.1
/mhv-portal-web/o/mhv-portal-theme/images/arrow-right-whi...	http/1.1
/mhv-portal-web/o/mhv-portal-theme/images/MHVLogoWhite-14...	http/1.1
www.myhealth.va.gov/mhv-portal-web/o/mhv-portal-theme/images/close-white.svg	http/1.1
/mhv-portal-web/o/mhv-portal-theme/js/uswds-3.7.1.min.js?...	http/1.1
/mhv-portal-web/o/mhv-portal-theme/js/main.js?browserId=o...	http/1.1
/mhv-portal-web/o/frontend-css-web/portal/aui_deprecated....	http/1.1
/mhv-portal-web/o/mhv-portal-theme/images/angle-arrow-dow...	http/1.1
/mhv-portal-web/o/mhv-portal-theme/fonts/source-sans-pro/...	http/1.1
/mhv-portal-web/o/mhv-portal-theme/fonts/fontawesome/fa-s...	http/1.1
www.myhealth.va.gov/mhv-portal-web/o/mhv-portal-theme/images/info.svg	http/1.1
/mhv-portal-web/home?p_p_state=maximized&p_p_mode=view&sa...	http/1.1
/mhv-portal-web/documents/314545/444503/Try-Messages-on-V...	http/1.1
/mhv-portal-web/documents/314545/0/try-medical-records.pn...	http/1.1
/mhv-portal-web/documents/314545/444503/try-appointments-...	http/1.1
/mhv-portal-web/o/mhv-portal-theme/fonts/source-sans-pro/...	http/1.1
/mhv-portal-web/combo/?browserId=other&minifierType=&lang...	http/1.1
/mhv-portal-web/o/js_resolve_modules?modules=metal-dom%2F...	http/1.1
/mhv-portal-web/o/js_resolve_modules?modules=frontend-js-...	http/1.1
www.myhealth.va.gov/mhv-portal-web/o/mhv-portal-theme/images/VCL-icon-white.svg	http/1.1
www.myhealth.va.gov/mhv-portal-web/o/mhv-portal-theme/images/plus-white.svg	http/1.1
www.myhealth.va.gov/mhv-portal-web/o/mhv-portal-theme/images/vcl-logo.png	http/1.1
/mhv-portal-web/o/mhv-portal-theme/images/usa-icons/navig...	http/1.1
/mhv-portal-web/combo/?browserId=other&minifierType=&lang...	http/1.1
/mhv-portal-web/combo/?browserId=other&minifierType=&lang...	http/1.1
/mhv-portal-web/combo/?browserId=other&minifierType=&lang...	http/1.1
/mhv-portal-web/combo/?browserId=other&minifierType=&lang...	http/1.1
/mhv-portal-web/combo/?browserId=other&minifierType=&lang...	http/1.1
/mhv-portal-web/combo/?browserId=other&minifierType=&lang...	http/1.1
/mhv-portal-web/o/frontend-js-web/liferay/available_langu...	http/1.1
/mhv-portal-web/combo/?browserId=other&minifierType=&lang...	http/1.1
/mhv-portal-web/combo/?browserId=other&minifierType=&lang...	http/1.1
/mhv-portal-web/combo/?browserId=other&minifierType=&lang...	http/1.1
www.myhealth.va.gov/mhv-portal-web/o/mhv-portal-theme/images/favicon.ico	http/1.1
/rb_65aa2f7a-2a1d-4836-9cfb-f98e8ba3af74?type=js3&sn=v_4_...	http/1.1
/rb_65aa2f7a-2a1d-4836-9cfb-f98e8ba3af74?type=js3&sn=v_4_...	http/1.1

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: 1.1 s

URL	Time Spent
www.myhealth.va.gov/	1.1 s
www.myhealth.va.gov/mhv-portal-web/home	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.

Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

Diagnostics

Minifying CSS files can reduce network payload sizes. Learn how to minify CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 300 ms 54.6 KiB

URL	Transfer Size	Est Savings
/mhv-portal-web/o/mhv-portal-theme/css/main.css?browserId...	217.4 KiB	37.0 KiB
/mhv-portal-web/o/mhv-portal-theme/css/clay.css?browserId...	89.5 KiB	15.4 KiB
/mhv-portal-web/o/frontend-css-web/main.css?browserId=oth...	15.7 KiB	2.2 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: 1.8 s 312.8 KiB

URL	Transfer Size	Est Savings
/mhv-portal-web/o/mhv-portal-theme/css/main.css?browserId...	216.6 KiB	209.9 KiB
/mhv-portal-web/o/mhv-portal-theme/css/clay.css?browserId...	88.6 KiB	88.1 KiB
/mhv-portal-web/o/frontend-css-web/main.css?browserId=oth...	14.8 KiB	14.8 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: 1.5 s 590.6 KiB

URL	Transfer Size	Est Savings
www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L&cx=c&gtm=4e6562h1	147.0 KiB	106.3 KiB
www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L	147.9 KiB	63.5 KiB
www.googletagmanager.com/gtag/js?id=G-YPB3FD0PQ9&cx=c&gtm=4e6562h1	143.9 KiB	63.0 KiB
/gtm.js?id=GTM-WZ6MXMD&gtm_auth=EVfhr6k93Fl16jzaZVCafQ&gt...	141.1 KiB	61.5 KiB
/mhv-portal-web/o/mhv-portal-theme/js/jquery-ui-1.13.2.mi...	66.0 KiB	58.9 KiB
/mhv-portal-web/combo?browserId=other&minifierType=js&lan...	74.8 KiB	58.8 KiB
/mhv-portal-web/combo?browserId=other&minifierType=js&lan...	69.5 KiB	53.8 KiB
/mhv-portal-web/o/mhv-portal-theme/js/datatables-2.1.6.mi...	45.2 KiB	38.6 KiB
www.myhealth.va.gov/ruxitagentjs_ICA7NVfgqrux_10335260306043831.js	81.3 KiB	31.6 KiB
/mhv-portal-web/combo?browserId=other&minifierType=js&lan...	33.8 KiB	28.1 KiB
/mhv-portal-web/combo/?browserId=other&minifierType=&lang...	50.0 KiB	26.5 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.

URL	Total CPU Time	Script Evaluation	Script Parse
/mhv-portal-web/combo?browserId=other&minifierType=js&lan...	668 ms	349 ms	30 ms
www.myhealth.va.gov/mhv-portal-web/home	662 ms	106 ms	14 ms
Unattributable	516 ms	15 ms	0.0 ms
www.myhealth.va.gov/ruxitagentjs_ICA7NVfgqrux_10335260306043831.js	430 ms	373 ms	20 ms
/gtm.js?id=GTM-WZ6MXMD&gtm_auth=EVfhr6k93Fl16jzaZVCafQ&gt...	222 ms	189 ms	30 ms
www.googletagmanager.com/gtag/js?id=G-YPB3FD0PQ9&cx=c&gtm=4e6562h1	214 ms	183 ms	30 ms
www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L	197 ms	166 ms	30 ms
/mhv-portal-web/combo?browserId=other&minifierType=js&lan...	99 ms	69 ms	25 ms
/mhv-portal-web/combo?browserId=other&minifierType=js&lan...	88 ms	56 ms	31 ms
/mhv-portal-web/o/mhv-portal-theme/js/jquery-3.7.1.min.js...	85 ms	65 ms	5.6 ms
/mhv-portal-web/o/mhv-portal-theme/js/uswds-3.7.1.min.js?...	59 ms	31 ms	6.5 ms
/mhv-portal-web/o/mhv-portal-theme/js/jquery-ui-1.13.2.mi...	53 ms	32 ms	21 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.

Category	Time Spent
Script Evaluation	1.8 s
Other	772 ms
Style & Layout	350 ms
Script Parsing & Compilation	338 ms
Parse HTML & CSS	225 ms
Rendering	60 ms
Garbage Collection	26 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 reason	Failure 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

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: 0.0 ms 11.4 KiB

URL	Transfer Size	Est Savings
/mhv-portal-web/combo/?browserId=other&minifierType=&lang...	50.0 KiB	11.4 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
U.S. flag `div.usa-accordion > div.usa-banner-header > div.usa-grid > img`	www.myhealth.va.gov/mhv-portal-web/o/mhv-portal-theme/images/us_flag_small.png

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

●Layout shift culprits

●Optimize DOM size

●Forced reflow

●Optimize viewport for mobile

●Avoids enormous network payloads Total size was 2,230 KiB

●Avoid long main-thread tasks 13 long tasks found

●Network Requests

●Network Round Trip Times 120 ms

●Server Backend Latencies 110 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 200 ms

●Avoid large layout shifts 1 layout shift found

○INP breakdown

○LCP request discovery

○User Timing marks and measures

○Avoid non-composited animations

100

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.

○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

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

●Touch targets have sufficient size and spacing.

●Heading elements appear in a sequentially-descending order

●Skip links are focusable.

●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

○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

○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.

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

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

○ARIA toggle fields have accessible names

○ARIA `tooltip` elements have accessible names

○ARIA `treeitem` elements have accessible names

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

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

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

○ARIA IDs are unique

○No form fields have multiple labels

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

○`<html>` element has 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.

○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.

○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

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.

	URL	Displayed size	Actual size	Expected size
U.S. flag `div.usa-accordion > div.usa-banner-header > div.usa-grid > img`	www.myhealth.va.gov/mhv-portal-web/o/mhv-portal-theme/images/us_flag_small.png	21 x 14	16 x 11	32 x 21

●Uses HTTPS

●Avoids deprecated APIs

●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

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

○Use a strong HSTS policy

○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