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· 0 checks — Desktop Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.
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Detailed Report

Audit breakdown by category with detailed findings.

50

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
www.jhu.edu/assets/uploads/2025/12/fall_video-500x500.png86400.0 s556.2 KiB
www.jhu.edu/assets/uploads/2025/12/first_snow-500x500.png86400.0 s373.5 KiB
connect.facebook.net/en_US/fbevents.js1200.0 s96.6 KiB
www.jhu.edu/assets/themes/machado/assets/css/base.css?ver=3a245030ae1d43119ce986400.0 s194.4 KiB
www.jhu.edu/assets/themes/machado/assets/fonts/fa-solid-900.fb8184ad.woff286400.0 s153.1 KiB
/assets/themes/machado/assets/images/baltimore-bg-laptop-...86400.0 s133.8 KiB
www.jhu.edu/assets/themes/machado/assets/fonts/fa-brands-400.8d3cabfc.woff286400.0 s115.0 KiB
www.jhu.edu/assets/uploads/2026/04/2026-04-Homepage-Loop-131-960x540.jpg86400.0 s107.7 KiB
/signals/config/1580540818936438?v=2.9.303&r=c2&domain=ww...1200.0 s39.2 KiB
www.jhu.edu/assets/uploads/2019/05/kale_thumb-700x700.jpg86400.0 s71.5 KiB
/assets/themes/machado/assets/images/academics-bg-laptop-...86400.0 s65.7 KiB
www.jhu.edu/assets/themes/machado/assets/images/torn-paper-wall.26d9482d.png86400.0 s63.7 KiB
www.jhu.edu/assets/uploads/2025/12/campus_walk-500x500.jpg86400.0 s54.9 KiB
/assets/themes/machado/assets/images/links-bg-2-laptop-la...86400.0 s49.3 KiB
www.jhu.edu/assets/themes/shared/assets/js/logger.js?ver=10c509275f386f75034186400.0 s42.7 KiB
/assets/themes/machado/assets/images/textured_paper_incre...86400.0 s41.5 KiB
/assets/themes/machado/assets/images/links-bg-1-laptop-la...86400.0 s37.5 KiB
/assets/themes/machado/assets/images/profiles-marble-bg-l...86400.0 s37.5 KiB
www.jhu.edu/wp/wp-includes/js/jquery/jquery.min.js?ver=3.7.186400.0 s29.8 KiB
www.jhu.edu/assets/uploads/2025/12/student_center-500x500.jpg86400.0 s27.7 KiB
/assets/themes/machado/src/assets/images/logos/university...86400.0 s26.9 KiB
/assets/themes/machado/src/assets/images/logos/university...86400.0 s26.3 KiB
www.jhu.edu/assets/themes/machado/assets/fonts/fa-regular-400.e931bc0d.woff286400.0 s25.1 KiB
www.jhu.edu/wp/wp-includes/js/dist/vendor/lodash.min.js?ver=4.17.2186400.0 s24.5 KiB
www.jhu.edu/assets/uploads/2025/08/cleveland3-300x300.jpg86400.0 s24.2 KiB
/assets/themes/machado/src/assets/images/logos/university...86400.0 s23.5 KiB
/assets/themes/machado/src/assets/images/logos/university...86400.0 s22.7 KiB
www.jhu.edu/assets/themes/machado/assets/css/home.css?ver=76ae86743fa2e5ff3c8c86400.0 s20.4 KiB
www.jhu.edu/assets/themes/machado/assets/js/home.js?ver=16d7e4c85fbb0c04879686400.0 s20.2 KiB
www.jhu.edu/cdn-cgi/challenge-platform/h/b/scripts/jsd/0b8fb825cb67/main.js?14400.0 s11.6 KiB
www.jhu.edu/assets/uploads/2019/05/kirby_thumb-300x300.jpg86400.0 s15.6 KiB
www.jhu.edu/assets/uploads/2020/02/michaelson_thumb-300x300.jpg86400.0 s12.7 KiB
www.jhu.edu/wp/wp-includes/js/dist/vendor/wp-polyfill.min.js?ver=3.15.086400.0 s11.7 KiB
www.jhu.edu/assets/uploads/2025/07/wedad_profile-150x150.jpg86400.0 s11.3 KiB
/assets/themes/machado/src/assets/images/logos/university...86400.0 s8.6 KiB
/assets/themes/machado/src/assets/images/logos/university...86400.0 s8.6 KiB
www.jhu.edu/wp/wp-includes/js/backbone.min.js?ver=1.6.086400.0 s7.9 KiB
www.jhu.edu/assets/themes/machado/assets/js/page.js?ver=86ca049e5317d3aecb8a86400.0 s7.8 KiB
www.jhu.edu/wp/wp-includes/js/underscore.min.js?ver=1.13.786400.0 s7.3 KiB
siteimproveanalytics.com/js/siteanalyze_6185845.js86400.0 s6.3 KiB
www.jhu.edu/assets/uploads/2019/05/melissa_mai_thumb-150x150.jpg86400.0 s5.4 KiB
/assets/themes/machado/src/assets/images/logos/university...86400.0 s5.3 KiB
/assets/themes/machado/src/assets/images/logos/university...86400.0 s5.2 KiB
www.jhu.edu/wp/wp-includes/js/jquery/jquery-migrate.min.js?ver=3.4.186400.0 s5.1 KiB
www.jhu.edu/assets/uploads/2019/05/mengel_main-150x150.jpg86400.0 s5.0 KiB
www.jhu.edu/assets/uploads/2019/05/boutros_thumb-150x150.jpg86400.0 s5.0 KiB
www.jhu.edu/assets/uploads/2019/05/ishpreet_singh_thumb-150x150.jpg86400.0 s4.6 KiB
www.jhu.edu/assets/uploads/2019/05/autumn_hughes-150x150.jpg86400.0 s3.6 KiB
www.jhu.edu/assets/themes/shared/assets/js/modernizr.js?ver=291b8c292d0735d630d586400.0 s3.0 KiB
www.jhu.edu/assets/themes/shared/assets/js/callout.js?ver=eed37df7f6dda1dfae4586400.0 s1.3 KiB
/assets/themes/machado/assets/images/noisy_grid_@2X_blue_...86400.0 s1.2 KiB
/assets/themes/shared/assets/js/site-alert.js?ver=fb546e3...86400.0 s1.0 KiB
www.jhu.edu/assets/themes/shared/assets/js/rave.js?ver=eccb97754c1f775ab30a86400.0 s755 B
www.gstatic.com/recaptcha/api2/logo_48.png604800.0 s2.3 KiB
www.jhu.edu/assets/themes/machado/assets/js/vent.js?ver=a41c71dee6c1cbfb8e8f86400.0 s349 B
www.jhu.edu/assets/themes/machado/assets/images/cursor-close-x.f2ad4067.png86400.0 s348 B
www.jhu.edu/assets/themes/machado/assets/images/dot-matrix_03.fffb96a0.png86400.0 s211 B
/tr/?id=1580540818936438&ev=PageView&dl=https%3A%2F%2Fwww...0.0 ms19 B
/p.css?s=1&k=vxy8tas&ht=tk&f=25271.25272.25277.25278.2527...604800.0 s172 B
www.jhu.edu/assets/uploads/2026/04/2026-04-Homepage-Loop-131.mp486400.0 s0 B

Layout shifts occur when elements move absent any user interaction. Investigate the causes of layout shifts, such as elements being added, removed, or their fonts changing as the page loads.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]
items: [map[node:map[type:text value:Total] score:0.714484] map[node:map[boundingRect:map[bottom:2097 height:1149 left:0 right:1350 top:949 width:1350] lhId:page-5-DIV nodeLabel:Research Saves Lives. Without research—at Johns Hopkins and at thousands of ot… path:1,HTML,1,BODY,3,DIV,2,DIV,0,DIV,1,DIV selector:div.page-container > div#main-content > div.jhu-block > div.center snippet:<div class="center force"> type:node] score:0.702593] map[node:map[boundingRect:map[bottom:1321 height:176 left:115 right:1235 top:1145 width:1119] lhId:page-1-SPAN nodeLabel:Research path:1,HTML,1,BODY,3,DIV,2,DIV,0,DIV,1,DIV,0,DIV,0,H2,0,SPAN selector:div.center > div.content > h2 > span.line snippet:<span class="line one"> type:node] score:0.011891 subItems:map[items:[map[cause:Web font extra:map[type:url value:https://fonts.gstatic.com/s/worksans/v24/QGY_z_wNahGAdqQ43RhVcIgYT2Xz5u32K3vXBi8Jpo3ZKyHaQQ.woff2]] map[cause:Web font extra:map[type:url value:https://www.jhu.edu/assets/themes/machado/assets/fonts/fa-solid-900.fb8184ad.woff2]] map[cause:Web font extra:map[type:url value:https://www.jhu.edu/assets/themes/machado/assets/fonts/fa-regular-400.e931bc0d.woff2]] map[cause:Web font extra:map[type:url value:https://fonts.gstatic.com/s/oswald/v57/TK3iWkUHHAIjg752GT8Gl-1PKw.woff2]]] type:subitems]]]

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.jhu.edu/assets/themes/machado/assets/fonts/fa-brands-400.8d3cabfc.woff245 ms
www.jhu.edu/assets/themes/machado/assets/fonts/fa-solid-900.fb8184ad.woff235 ms
fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff235 ms
www.jhu.edu/assets/themes/machado/assets/fonts/fa-regular-400.e931bc0d.woff225 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:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:9.151 source:map[column:63433 line:1 type:source-location url:https://www.jhu.edu/assets/themes/shared/assets/js/logger.js?ver=10c509275f386f750341 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:22.509 source:map[column:1978 line:0 type:source-location url:https://www.jhu.edu/assets/themes/shared/assets/js/modernizr.js?ver=291b8c292d0735d630d5 urlProvider:network]] map[reflowTime:1.752 source:map[column:1643 line:0 type:source-location url:https://www.jhu.edu/assets/themes/shared/assets/js/modernizr.js?ver=291b8c292d0735d630d5 urlProvider:network]] map[reflowTime:5.648 source:map[column:5308 line:0 type:source-location url:https://www.jhu.edu/assets/themes/shared/assets/js/modernizr.js?ver=291b8c292d0735d630d5 urlProvider:network]] map[reflowTime:2.801 source:map[column:5338 line:0 type:source-location url:https://www.jhu.edu/assets/themes/shared/assets/js/modernizr.js?ver=291b8c292d0735d630d5 urlProvider:network]] map[reflowTime:7.734 source:map[column:85575 line:1 type:source-location url:https://www.jhu.edu/wp/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 urlProvider:network]] map[reflowTime:37.367 source:map[type:text value:[unattributed]]] map[reflowTime:0.892 source:map[column:50335 line:1 type:source-location url:https://www.jhu.edu/wp/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 urlProvider:network]] map[reflowTime:0.154 source:map[column:50393 line:1 type:source-location url:https://www.jhu.edu/wp/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 urlProvider:network]] map[reflowTime:0.154 source:map[column:50457 line:1 type:source-location url:https://www.jhu.edu/wp/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 urlProvider:network]] map[reflowTime:0.217 source:map[column:83946 line:1 type:source-location url:https://www.jhu.edu/wp/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 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-IMG
nodeLabel: Johns Hopkins University
path: 1,HTML,1,BODY,3,DIV,0,DIV,2,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,H1,0,IMG
selector: div.content > div.centerme > h1 > img.logo
snippet: <img class="logo horizontal-logo svg" src="https://www.jhu.edu/assets/themes/machado/src/assets/images/logos/universi…" alt="Johns Hopkins University">

Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

Why this matters

Performance issues directly impact user engagement and conversion rates.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.
title: Preconnected origins
value: no origins were preconnected
description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.
title: Preconnect candidates

Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer SizeDuration
www.jhu.edu/assets/themes/shared/assets/js/logger.js?ver=10c509275f386f75034142.7 KiB170 ms
www.jhu.edu/assets/themes/shared/assets/js/modernizr.js?ver=291b8c292d0735d630d53.0 KiB
fonts.googleapis.com/css2?family=Work+Sans:wght@500&display=swap961 B270 ms
www.jhu.edu/assets/themes/machado/assets/css/base.css?ver=3a245030ae1d43119ce9194.4 KiB340 ms
www.jhu.edu/wp/wp-includes/js/dist/vendor/wp-polyfill.min.js?ver=3.15.011.7 KiB
www.jhu.edu/assets/themes/machado/assets/css/home.css?ver=76ae86743fa2e5ff3c8c20.4 KiB57 ms
/css2?family=Source+Serif+4:ital,opsz,wght@0,8..60,200..9...798 B
/css2?family=Oswald:wght@200..700&family=Source+Serif+4:i...990 B
/css2?family=Work+Sans:ital,wght@0,100..900;1,100..900&di...623 B61 ms
fonts.googleapis.com/css2?family=Oswald:wght@200..700&display=swap653 B
use.typekit.net/vxy8tas.css1.1 KiB204 ms
/p.css?s=1&k=vxy8tas&ht=tk&f=25271.25272.25277.25278.2527...172 B204 ms

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
Bright red fall foliage div.media > figure > a.gtm-link-click > img.attachment-large_thumb
www.jhu.edu/assets/uploads/2025/12/fall_video-500x500.png555.5 KiB536.9 KiB
Two girls with winter coats and hoods smile while light snow falls around them. div.media > figure > a.gtm-link-click > img.attachment-large_thumb
www.jhu.edu/assets/uploads/2025/12/first_snow-500x500.png373.0 KiB354.4 KiB
telescope a.force > div.image > div.image-container > img.column
/factory/sites/default/files/styles/hub_thumbnail/public/...166.1 KiB152.0 KiB
Three young women walk on campus div.media > figure > a.gtm-link-click > img.attachment-large_thumb
www.jhu.edu/assets/uploads/2025/12/campus_walk-500x500.jpg54.7 KiB36.2 KiB
div.page-container > div#main-content > div.jhu-block > ::before div.page-container > div#main-content > div.jhu-block > ::before
www.jhu.edu/assets/themes/machado/assets/images/torn-paper-wall.26d9482d.png63.5 KiB34.2 KiB
Kale Hyder div.featured > a.image > div.accent-element > img.attachment-xlarge_thumb
www.jhu.edu/assets/uploads/2019/05/kale_thumb-700x700.jpg71.2 KiB28.4 KiB
A lacrosse player in a white jersey celebrates a.force > div.image > div.image-container > img.column
/factory/sites/default/files/styles/landscape/public/2026...84.6 KiB28.2 KiB
div.page-container > div#main-content > div.jhu-block > div.marker-stroke div.page-container > div#main-content > div.jhu-block > div.marker-stroke
/assets/themes/machado/assets/images/links-bg-1-laptop-la...37.4 KiB26.6 KiB
A woman smiles div.center > div.content > a.secondary > img.attachment-large_thumb
www.jhu.edu/assets/uploads/2025/08/cleveland3-300x300.jpg24.1 KiB17.8 KiB
Moon rises over campus building at dusk div.media > figure > a.gtm-link-click > img.attachment-large_thumb
www.jhu.edu/assets/uploads/2025/12/student_center-500x500.jpg27.5 KiB15.0 KiB
A seated woman leans on her left arm and smiles div.center > div.content > a.secondary > img.attachment-large_thumb
www.jhu.edu/assets/uploads/2025/07/wedad_profile-150x150.jpg11.1 KiB7.5 KiB
Spring blossoms in front of Shriver Hall's university seal a.force > div.image > div.image-container > img.column
/factory/sites/default/files/styles/hub_thumbnail/public/...18.8 KiB4.7 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: 540 ms
URLTime Spent
jhu.edu/540 ms
www.jhu.edu/0.0 ms

These are the largest layout shifts observed on the page. Each table item represents a single layout shift, and shows the element that shifted the most. Below each item are possible root causes that led to the layout shift. Some of these layout shifts may not be included in the CLS metric value due to windowing. Learn how to improve CLS

Why this matters

Performance issues directly impact user engagement and conversion rates.

ElementLayout shift score
Research Saves Lives. Without research—at Johns Hopkins and at thousands of ot… div.page-container > div#main-content > div.jhu-block > div.center
0.703
Research div.center > div.content > h2 > span.line
0.012

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

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: 230 ms 173.8 KiB
URLTransfer SizeEst Savings
www.jhu.edu/assets/themes/machado/assets/css/base.css?ver=3a245030ae1d43119ce9194.2 KiB161.0 KiB
www.jhu.edu/assets/themes/machado/assets/css/home.css?ver=76ae86743fa2e5ff3c8c20.3 KiB12.7 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: 0.0 ms 412.7 KiB
URLTransfer SizeEst Savings
www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js361.8 KiB177.1 KiB
www.googletagmanager.com/gtag/js?id=G-8031WYVC9V&cx=c&gtm=4e64h1170.1 KiB71.0 KiB
www.googletagmanager.com/gtm.js?id=GTM-P2FG28R129.7 KiB64.9 KiB
www.googletagmanager.com/gtag/js?id=G-TSX9K66082&cx=c&gtm=4e64h1152.3 KiB64.3 KiB
connect.facebook.net/en_US/fbevents.js96.5 KiB35.4 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.

URLTransfer Size
www.jhu.edu/assets/uploads/2026/04/2026-04-Homepage-Loop-131.mp45.9 MiB
www.jhu.edu/assets/uploads/2025/12/fall_video-500x500.png556.2 KiB
www.jhu.edu/assets/uploads/2025/12/first_snow-500x500.png373.5 KiB
www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js362.4 KiB
www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js361.9 KiB
www.jhu.edu/assets/themes/machado/assets/css/base.css?ver=3a245030ae1d43119ce9194.4 KiB
www.googletagmanager.com/gtag/js?id=G-8031WYVC9V&cx=c&gtm=4e64h1170.2 KiB
/factory/sites/default/files/styles/hub_thumbnail/public/...166.6 KiB
www.jhu.edu/assets/themes/machado/assets/fonts/fa-solid-900.fb8184ad.woff2153.1 KiB
www.googletagmanager.com/gtag/js?id=G-TSX9K66082&cx=c&gtm=4e64h1152.4 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
A lacrosse player in a white jersey celebrates a.force > div.image > div.image-container > img.column
/factory/sites/default/files/styles/landscape/public/2026...
Johns Hopkins University div.content > div.centerme > h1 > img.logo
/assets/themes/machado/src/assets/images/logos/university...
Johns Hopkins University div.content > div.identification > a.footer-logo > img.horizontal-logo
/assets/themes/machado/src/assets/images/logos/university...
Tod Machover smiles for the camera. div.load-into > div.item > a.media > img.media-object
/factory/sites/default/files/styles/square_thumbnail/publ...
A lacrosse player in a white jersey celebrates div.load-into > div.item > a.media > img.media-object
/factory/sites/default/files/styles/square_thumbnail/publ...
Vernon Lidtke div.load-into > div.item > a.media > img.media-object
/factory/sites/default/files/styles/square_thumbnail/publ...
div.load-into > div.item > a.media > img.media-object div.load-into > div.item > a.media > img.media-object
/factory/sites/default/files/styles/square_thumbnail/publ...

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

●Optimize DOM size
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Max Potential First Input Delay 50 ms
●Minify CSS
●Minify JavaScript
●User Timing marks and measures 11 user timings
●JavaScript execution time 0.3 s
●Minimizes main-thread work 1.2 s
●Avoid long main-thread tasks 4 long tasks found
●Avoid non-composited animations 2 animated elements found
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 100 ms
●Server Backend Latencies 210 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 40 ms
○INP breakdown
99

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.

Navigation

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
HOPKINS HANGS ON TO DEFEAT RIVAL MARYLAND div.article > div.text > div.accent-element > h5

These are opportunities to improve keyboard navigation in your application.

Visible text labels that do not match the accessible name can result in a confusing experience for screen reader users. Learn more about accessible names.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
SEARCH PROGRAMS div.jhu-block > form#gtm-home-explorer > div.form_fields > button.button
○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
●Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
●`[role]`s are contained by their required parent element
●`[role]` values are valid
●`[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.
●`button`, `link`, and `menuitem` elements have accessible names
●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.
●Document has a main landmark.
●Deprecated ARIA roles were not used
●`<video>` elements contain a `<track>` element with `[kind="captions"]`
●Identical links have the same purpose.
○`[accesskey]` values are unique
○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 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
○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.
○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
www.jhu.edu/cdn-cgi/challenge-platform/scripts/jsd/main.js
StorageType.persistent is deprecated. Please use standardized navigator.storage instead.
www.jhu.edu/cdn-cgi/challenge-platform/scripts/jsd/main.js
Fledge
www.jhu.edu/cdn-cgi/challenge-platform/scripts/jsd/main.js
AttributionReporting
connect.facebook.net/en_US/fbevents.js line 279, col 769

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
www.jhu.edu/assets/themes/shared/src/assets/images/favicons/manifest.json
Failed to load resource: the server responded with a status of 403 ()
www.jhu.edu/assets/themes/shared/src/assets/images/favicons/manifest.json
Failed to load resource: the server responded with a status of 403 ()
www.jhu.edu/ line 2956, col 0
Manifest fetch from https://www.jhu.edu/assets/themes/shared/src/assets/images/favicons/manifest.json failed, code 403
www.jhu.edu/
Manifest fetch from https://www.jhu.edu/assets/themes/shared/src/assets/images/favicons/manifest.json failed, code 403
●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
●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
●Image elements have `[alt]` attributes
●Document has a valid `hreflang`
●Document has a valid `rel=canonical`

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