Skip to content
https://rice.edu

Lighthouse Mobile

· 0 checks — Mobile Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.
SCORE
0
GRADE
FIX
0
REVIEW
0
PASS
0
INFO
0

Detailed Report

Audit breakdown by category with detailed findings.

33

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
/sites/g/files/bxs2566/files/2025-11/home-hero-gateway-ma...1209600.0 s137.6 KiB
news.rice.edu/sites/g/files/bxs2656/files/2024-09/00cof_verduzco_bart.jpg1209600.0 s134.0 KiB
js.adsrvr.org/up_loader.3.0.0.js0.0 ms12.3 KiB
/sites/g/files/bxs2566/files/2026-03/rice-academic-quad-h...1209600.0 s108.7 KiB
www.rice.edu/themes/custom/adm_rice/assets/js/app.js?v=10.6.31209600.0 s86.6 KiB
www.rice.edu/sites/g/files/bxs2566/files/2026-04/gsa-rankings-2026-hero-v2.webp1209600.0 s58.4 KiB
/sites/g/files/bxs2566/files/2026-02/rice-fifa-press-conf...1209600.0 s56.6 KiB
/sites/g/files/bxs2656/files/2025-01/12000_james_tour_pho...1209600.0 s56.6 KiB
news.rice.edu/sites/g/files/bxs2656/files/2025-03/00bart_7.jpg1209600.0 s52.2 KiB
www.rice.edu/themes/custom/adm_rice/assets/css/app.css1209600.0 s46.8 KiB
/sites/g/files/bxs2566/files/js/js_aBqya4AT2_6yges7zY5xaW...1209600.0 s40.9 KiB
news.rice.edu/sites/g/files/bxs2656/files/2025-02/00bart-anshu_1.jpg1209600.0 s39.4 KiB
cse.google.com/cse.js?cx=014332935913219502104:djq0abwo2eq0.0 ms3.6 KiB
siteimproveanalytics.com/js/siteanalyze_6343607.js86400.0 s8.9 KiB
news.rice.edu/sites/g/files/bxs2656/files/2025-03/00bart_10.jpg1209600.0 s35.5 KiB
/sites/g/files/bxs2566/files/2026-04/quyen-jones-artemis-...1209600.0 s33.2 KiB
/sites/g/files/bxs2656/files/styles/max_article_size_500p...1209600.0 s29.8 KiB
www.rice.edu/sites/g/files/bxs2656/files/2025-02/featured_ev.jpg1209600.0 s28.4 KiB
analytics.ahrefs.com/analytics.js14400.0 s3.0 KiB
/sites/g/files/bxs2656/files/styles/max_article_size_500p...1209600.0 s17.6 KiB
/st?ga_tracking_id=G-8MQ8ENB89P%3BG-KQHVHKSY8D&shpt=Rice%...0.0 ms1.2 KiB
/st?ga_tracking_id=G-8MQ8ENB89P%3BG-KQHVHKSY8D&shpt=Rice%...0.0 ms1.1 KiB
www.google.com/cse/static/style/look/v6/default.css3000.0 s1.2 KiB
js.adsrvr.org/universal_pixel.js0.0 ms935 B
static.addtoany.com/menu/page.js86400.0 s2.2 KiB
/sites/g/files/bxs2566/files/js/js_5aY8zv23mW6tpX0OaCUk0y...1209600.0 s7.6 KiB
/sites/g/files/bxs2566/files/2019-08/Rice_University_Hori...1209600.0 s6.9 KiB
/st?ga_tracking_id=G-8MQ8ENB89P%3BG-KQHVHKSY8D&shpt=Rice%...0.0 ms582 B
cdn-cookieyes.com/assets/images/close.svg36000.0 s868 B
kit.fontawesome.com/c22e70c3df.css300.0 s492 B
www.rice.edu/libraries/lazysizes/lazysizes.min.js1209600.0 s3.6 KiB
www.rice.edu/themes/custom/adm_rice/assets/css/extra.css1209600.0 s3.2 KiB
/sites/g/files/bxs2566/files/css/css_uWT33OGJAmpu4gOi0bA5...1209600.0 s2.2 KiB
/modules/contrib/ckeditor_accordion/js/accordion.frontend...1209600.0 s1.7 KiB
/sites/g/files/bxs2566/files/js/js_idIt7dMb0bu-NAyi2Sh94b...1209600.0 s906 B
www.rice.edu/themes/custom/adm_rice/assets/js/extras.js?v=10.6.31209600.0 s879 B
www.rice.edu/modules/contrib/google_tag/js/gtag.js?tcvtx01209600.0 s790 B
/st?ga_tracking_id=G-8MQ8ENB89P%3BG-KQHVHKSY8D&shpt=Rice%...0.0 ms70 B
www.rice.edu/modules/contrib/google_tag/js/gtm.js?tcvtx01209600.0 s668 B
www.rice.edu/sites/g/files/bxs2566/files/2024-03/icon--external-link--white.svg1209600.0 s633 B
/sites/g/files/bxs2566/files/js/js_UrSD6icM5sbY743d2jBrv9...1209600.0 s410 B

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:42.865 source:map[column:80089 line:3 type:source-location url:https://www.rice.edu/sites/g/files/bxs2566/files/js/js_aBqya4AT2_6yges7zY5xaWUqJLOaC_h1jDrpRECxpXc.js?scope=header&delta=0&language=en&theme=adm_rice&include=eJxdi1EKgCAQBS8k7pHk5dpi6S6IH9npK4qgfoZ5Aw_M3aCD8Iifm2l34Bpajomk2ITi4po4d2sBMVrjbEqv3Zek7MRMSgodQnLivz0WbN9YXcE-6MIBxNk1xA 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:6.184 source:map[column:50335 line:2 type:source-location url:https://www.rice.edu/sites/g/files/bxs2566/files/js/js_aBqya4AT2_6yges7zY5xaWUqJLOaC_h1jDrpRECxpXc.js?scope=header&delta=0&language=en&theme=adm_rice&include=eJxdi1EKgCAQBS8k7pHk5dpi6S6IH9npK4qgfoZ5Aw_M3aCD8Iifm2l34Bpajomk2ITi4po4d2sBMVrjbEqv3Zek7MRMSgodQnLivz0WbN9YXcE-6MIBxNk1xA urlProvider:network]] map[reflowTime:0.478 source:map[column:50393 line:2 type:source-location url:https://www.rice.edu/sites/g/files/bxs2566/files/js/js_aBqya4AT2_6yges7zY5xaWUqJLOaC_h1jDrpRECxpXc.js?scope=header&delta=0&language=en&theme=adm_rice&include=eJxdi1EKgCAQBS8k7pHk5dpi6S6IH9npK4qgfoZ5Aw_M3aCD8Iifm2l34Bpajomk2ITi4po4d2sBMVrjbEqv3Zek7MRMSgodQnLivz0WbN9YXcE-6MIBxNk1xA urlProvider:network]] map[reflowTime:0.291 source:map[column:50457 line:2 type:source-location url:https://www.rice.edu/sites/g/files/bxs2566/files/js/js_aBqya4AT2_6yges7zY5xaWUqJLOaC_h1jDrpRECxpXc.js?scope=header&delta=0&language=en&theme=adm_rice&include=eJxdi1EKgCAQBS8k7pHk5dpi6S6IH9npK4qgfoZ5Aw_M3aCD8Iifm2l34Bpajomk2ITi4po4d2sBMVrjbEqv3Zek7MRMSgodQnLivz0WbN9YXcE-6MIBxNk1xA urlProvider:network]] map[reflowTime:31.701 source:map[column:49615 line:2 type:source-location url:https://www.rice.edu/sites/g/files/bxs2566/files/js/js_aBqya4AT2_6yges7zY5xaWUqJLOaC_h1jDrpRECxpXc.js?scope=header&delta=0&language=en&theme=adm_rice&include=eJxdi1EKgCAQBS8k7pHk5dpi6S6IH9npK4qgfoZ5Aw_M3aCD8Iifm2l34Bpajomk2ITi4po4d2sBMVrjbEqv3Zek7MRMSgodQnLivz0WbN9YXcE-6MIBxNk1xA urlProvider:network]] map[reflowTime:0.548 source:map[column:51395 line:2 type:source-location url:https://www.rice.edu/sites/g/files/bxs2566/files/js/js_aBqya4AT2_6yges7zY5xaWUqJLOaC_h1jDrpRECxpXc.js?scope=header&delta=0&language=en&theme=adm_rice&include=eJxdi1EKgCAQBS8k7pHk5dpi6S6IH9npK4qgfoZ5Aw_M3aCD8Iifm2l34Bpajomk2ITi4po4d2sBMVrjbEqv3Zek7MRMSgodQnLivz0WbN9YXcE-6MIBxNk1xA urlProvider:network]] map[reflowTime:3.663 source:map[column:49637 line:2 type:source-location url:https://www.rice.edu/sites/g/files/bxs2566/files/js/js_aBqya4AT2_6yges7zY5xaWUqJLOaC_h1jDrpRECxpXc.js?scope=header&delta=0&language=en&theme=adm_rice&include=eJxdi1EKgCAQBS8k7pHk5dpi6S6IH9npK4qgfoZ5Aw_M3aCD8Iifm2l34Bpajomk2ITi4po4d2sBMVrjbEqv3Zek7MRMSgodQnLivz0WbN9YXcE-6MIBxNk1xA 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: Quyen Tran Jones - NASA Artemis II - Snapshot from NASA Video
path: 1,HTML,1,BODY,6,DIV,1,MAIN,0,DIV,2,DIV,1,DIV,0,DIV,0,SECTION,0,DIV,1,DIV,1,DIV,0,DIV,0,A,0,IMG
selector: div#carousel-item-1 > div.carousel-image > a#carousel-image-1 > img.no-lazy
snippet: <img alt="Quyen Tran Jones - NASA Artemis II - Snapshot from NASA Video" class="no-lazy" src="/sites/g/files/bxs2566/files/2026-04/quyen-jones-artemis-ii-hero-1500px.we…">

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
cdn.jsdelivr.net/npm/@fancyapps/fancybox@3.5.7/dist/jquery.fancybox.min.js23.0 KiB760 ms
cdn.jsdelivr.net/npm/focus-visible@5.2.0/dist/focus-visible.min.js1.3 KiB
cdn.jsdelivr.net/npm/plyr@3.7.2/dist/plyr.polyfilled.min.js35.9 KiB608 ms
cdn-cookieyes.com/client_data/653b6f472a2586b0ebbb56c1/script.js8.7 KiB1.1 s
kit.fontawesome.com/c22e70c3df.css492 B779 ms
cdn.jsdelivr.net/npm/selectric@1.13.0/public/jquery.selectric.min.js5.2 KiB
cdn.jsdelivr.net/npm/@fancyapps/fancybox@3.5.7/dist/jquery.fancybox.min.css3.4 KiB152 ms
/npm/@accessible360/accessible-slick@1.0.1/slick/accessib...1.8 KiB152 ms
cdn.jsdelivr.net/npm/plyr@3.7.2/dist/plyr.css6.2 KiB304 ms
cdn.jsdelivr.net/npm/@accessible360/accessible-slick@1.0.1/slick/slick.min.js11.0 KiB456 ms
cdn.jsdelivr.net/npm/@accessible360/accessible-slick@1.0.1/slick/slick.min.css781 B769 ms
/sites/g/files/bxs2566/files/js/js_aBqya4AT2_6yges7zY5xaW...40.9 KiB1.1 s
www.rice.edu/themes/custom/adm_rice/assets/css/app.css46.8 KiB1.7 s
www.rice.edu/themes/custom/adm_rice/assets/css/extra.css3.2 KiB
ka-p.fontawesome.com/assets/c22e70c3df/54803419/kit.css?token=c22e70c3df31.9 KiB1.7 s
www.rice.edu/modules/contrib/google_tag/js/gtm.js?tcvtx0668 B
www.rice.edu/modules/contrib/google_tag/js/gtag.js?tcvtx0790 B
/sites/g/files/bxs2566/files/js/js_5aY8zv23mW6tpX0OaCUk0y...7.6 KiB151 ms
/sites/g/files/bxs2566/files/css/css_uWT33OGJAmpu4gOi0bA5...2.2 KiB

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
/assets/fonts/Copernicus/Copernicus Book Italic/BookItali...5.0 ms
staticws.b-cdn.net/assets/fonts/Mallory/Mallory%20Black/Black.woff25.0 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
div.res2-container > div.res2-cards > div#card-2 > img.lazyload div.res2-container > div.res2-cards > div#card-2 > img.lazyload
news.rice.edu/sites/g/files/bxs2656/files/2024-09/00cof_verduzco_bart.jpg133.6 KiB118.0 KiB
div.res2-container > div.res2-cards > div#card-1 > img.lazyload div.res2-container > div.res2-cards > div#card-1 > img.lazyload
/sites/g/files/bxs2656/files/2025-01/12000_james_tour_pho...56.2 KiB50.7 KiB
div.res2-container > div.res2-cards > div#card-4 > img.lazyload div.res2-container > div.res2-cards > div#card-4 > img.lazyload
news.rice.edu/sites/g/files/bxs2656/files/2025-03/00bart_7.jpg51.8 KiB39.8 KiB
div.res2-container > div.res2-cards > div#card-5 > img.lazyload div.res2-container > div.res2-cards > div#card-5 > img.lazyload
news.rice.edu/sites/g/files/bxs2656/files/2025-02/00bart-anshu_1.jpg38.9 KiB29.9 KiB
div.res2-container > div.res2-cards > div#card-3 > img.lazyload div.res2-container > div.res2-cards > div#card-3 > img.lazyload
news.rice.edu/sites/g/files/bxs2656/files/2025-03/00bart_10.jpg35.1 KiB27.0 KiB
div.res2-container > div.res2-cards > div#card-6 > img.lazyload div.res2-container > div.res2-cards > div#card-6 > img.lazyload
www.rice.edu/sites/g/files/bxs2656/files/2025-02/featured_ev.jpg28.0 KiB21.4 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

The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Diagnostics

Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 300 ms 83.6 KiB
URLTransfer SizeEst Savings
www.rice.edu/themes/custom/adm_rice/assets/css/app.css46.6 KiB40.5 KiB
ka-p.fontawesome.com/assets/c22e70c3df/54803419/kit.css?token=c22e70c3df31.7 KiB31.3 KiB
www.google.com/cse/static/element/dc329f57de078f5d/default_v6+en.css11.9 KiB11.8 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: 2.5 s 351.9 KiB
URLTransfer SizeEst Savings
cdn.amplitude.com/libs/plugin-session-replay-browser-1.23.2-min.js.gz129.9 KiB82.5 KiB
www.rice.edu/themes/custom/adm_rice/assets/js/app.js?v=10.6.378.7 KiB69.2 KiB
www.googletagmanager.com/gtm.js?id=GTM-PH9QMD3143.8 KiB63.9 KiB
/cse/static/element/dc329f57de078f5d/cse_element__en.js?u...102.7 KiB51.4 KiB
cdn.jsdelivr.net/npm/plyr@3.7.2/dist/plyr.polyfilled.min.js35.6 KiB32.4 KiB
cse.google.com/adsense/search/async-ads.js43.3 KiB31.5 KiB
static.addtoany.com/menu/modules/core.ydpp7jcu.js25.8 KiB21.1 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
cdn.amplitude.com/libs/plugin-session-replay-browser-1.23.2-min.js.gz1.2 s956 ms42 ms
Unattributable1.0 s59 ms0.0 ms
www.rice.edu/697 ms89 ms13 ms
/sites/g/files/bxs2566/files/js/js_aBqya4AT2_6yges7zY5xaW...579 ms370 ms14 ms
www.googletagmanager.com/gtm.js?id=GTM-PH9QMD3400 ms341 ms46 ms
cse.google.com/cse.js?cx=014332935913219502104:djq0abwo2eq144 ms113 ms1.1 ms
cdn-cookieyes.com/client_data/653b6f472a2586b0ebbb56c1/script.js125 ms111 ms4.6 ms
cdn-cookieyes.com/client_data/653b6f472a2586b0ebbb56c1/banner.js110 ms72 ms2.5 ms
www.rice.edu/libraries/lazysizes/lazysizes.min.js110 ms54 ms1.3 ms
/cse/static/element/dc329f57de078f5d/cse_element__en.js?u...97 ms33 ms61 ms
www.rice.edu/themes/custom/adm_rice/assets/js/app.js?v=10.6.385 ms43 ms41 ms
ep2.adtrafficquality.google/sodar/sodar2.js75 ms69 ms2.2 ms
/spx?conv=1&shaid=39547&tdr=&plh=https%3A%2F%2Fwww.rice.e...66 ms61 ms2.1 ms
cse.google.com/adsense/search/async-ads.js59 ms38 ms15 ms
/spx?dxver=4.0.0&shaid=39547&tdr=&plh=https%3A%2F%2Fwww.r...54 ms42 ms2.5 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 Evaluation3.1 s
Other1.2 s
Style & Layout696 ms
Script Parsing & Compilation316 ms
Parse HTML & CSS218 ms
Garbage Collection70 ms
Rendering49 ms

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: 0.0 ms 3.3 KiB
URLTransfer SizeEst Savings
www.google.com/cse/static/element/dc329f57de078f5d/default_v6+en.css12.0 KiB3.3 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
Rice University Logo div.header__content > div.fl > a.header__logo > img.image-responsive
/sites/g/files/bxs2566/files/2019-08/Rice_University_Hori...
Rice University Logo div.footer__content > div.tal > a.footer__logo > img.image-responsive
/sites/g/files/bxs2566/files/2019-08/Rice_University_Hori...
Susan and Fayez Sarofim Hall div.res2-row-some-page-wrapper > div.res2-column-some-page-wrapper > div.blue-column > img.image-responsive
Two researchers work in a lab while a student with a red bag walks past. div.page-body__content > div.masonry-grid > div.masonry-item > img.image-responsive
Researcher in a red jacket observes and takes notes next to a tree outdoors. div.page-body__content > div.masonry-grid > div.masonry-item > img.image-responsive
Laboratory equipment including a microscope, petri dishes, a notepad, and a com… div.page-body__content > div.masonry-grid > div.masonry-item > img.image-responsive
Presenter speaking to an audience with a bar graph on screen and an airplane gr… div.page-body__content > div.masonry-grid > div.masonry-item > img.image-responsive
Two scientists in lab coats and gloves discuss research in a hallway. div.page-body__content > div.masonry-grid > div.masonry-item > img.image-responsive
Building infrastructure graphic showing electricity, heating, and cooling syste… div.page-body__content > div.masonry-grid > div.masonry-item > img.image-responsive
Stack of books next to a server rack symbolizing research libraries and data st… div.page-body__content > div.masonry-grid > div.masonry-item > img.image-responsive
Administrator working on a computer with spreadsheets and database files shown … div.page-body__content > div.masonry-grid > div.masonry-item > img.image-responsive
Two safety officers in protective suits with gloves, goggles, masks, and boots … div.page-body__content > div.masonry-grid > div.masonry-item > img.image-responsive
div.page-body__content > div.rr3-mag-container > div.rr3-mag-right-column > img.image-responsive div.page-body__content > div.rr3-mag-container > div.rr3-mag-right-column > img.image-responsive

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

●Layout shift culprits
●Document request latency
●Optimize DOM size
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Minify JavaScript
●Avoids enormous network payloads Total size was 2,224 KiB
●Avoid long main-thread tasks 20 long tasks found
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 70 ms
●Server Backend Latencies 60 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Avoid multiple page redirects
●Initial server response time was short Root document took 0 ms
○INP breakdown
○User Timing marks and measures
○Avoid non-composited animations
○Avoid large layout shifts
92

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

When a button doesn't have an accessible name, screen readers announce it as "button", making it unusable for users who rely on screen readers. Learn how to make buttons more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.menu__search > div.search > form > button#search-close div.menu__search > div.search > form > button#search-close
div.container > div.grid-pv > div.js-rice-news > button.slick-prev div.container > div.grid-pv > div.js-rice-news > button.slick-prev
div.container > div.grid-pv > div.js-rice-news > button.slick-next div.container > div.grid-pv > div.js-rice-news > button.slick-next

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
MENTAL HEALTH RESOURCES div.footer__content > div.footer--content-box > nav.footer__menu > a.menu__item

These items highlight common accessibility best practices.

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
Explore the Winter 2026 Issue (opens in a new window) div.res2-row-some-page-wrapper > div.res2-column-some-page-wrapper > div.green-column > a.responsive-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
●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
●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
●Heading elements appear in a sequentially-descending order
●Document has a main landmark.
●Deprecated ARIA roles were not used
○`[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 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.
○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.
100

Best Practices

●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
●Serves images with appropriate resolution
●Page has the HTML doctype
●Properly defines charset
●No browser errors logged to the console
●No issues in the `Issues` panel in Chrome Devtools
●Ensure CSP is effective against XSS attacks
●Use a strong HSTS policy
●Ensure proper origin isolation with COOP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
●Page has valid source maps
○Redirects HTTP traffic to HTTPS
○Mitigate clickjacking with XFO or CSP
100

SEO

These checks ensure that your page is following basic search engine optimization advice. There are many additional factors Lighthouse does not score here that may affect your search ranking, including performance on Core Web Vitals. Learn more about Google Search Essentials.

○Structured data is valid
●Page isn’t blocked from indexing
●Document has a `<title>` element
●Document has a meta description
●Page has successful HTTP status code
●Links have descriptive text
●Links are crawlable
●Image elements have `[alt]` attributes
●Document has a valid `hreflang`
●Document has a valid `rel=canonical`
○robots.txt is valid

Send Feedback