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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.

79

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.umb.edu/media/umassboston/site-assets/javascript/main.js3600.0 s176.6 KiB
/signals/config/839846335654893?v=2.9.303&r=stable&domain...1200.0 s97.0 KiB
connect.facebook.net/en_US/fbevents.js1200.0 s96.6 KiB
/signals/config/409483902956545?v=2.9.303&r=stable&domain...1200.0 s46.6 KiB
/prod01/umassbostonedu-cdn-pxl/media/umassboston/content-...0.0 ms34.9 KiB
www.umb.edu/media/umassboston/site-assets/css/main0610.css3600.0 s31.8 KiB
www.umb.edu/media/umassboston/site-assets/javascript/jquery.3.5.1.min.js3600.0 s31.1 KiB
www.umb.edu/media/umassboston/site-assets/fonts/ABCWhyte-Bold.woff86400.0 s61.4 KiB
www.umb.edu/media/umassboston/site-assets/fonts/ABCArizonaSerif-Bold.woff286400.0 s61.4 KiB
www.umb.edu/media/umassboston/site-assets/fonts/ABCWhyte-Medium.woff286400.0 s51.5 KiB
www.umb.edu/media/umassboston/site-assets/fonts/ABCWhyte-Book.woff286400.0 s49.7 KiB
www.google-analytics.com/analytics.js7200.0 s20.9 KiB
www.umb.edu/media/umassboston/site-assets/css/umass-extra-css.css3600.0 s19.2 KiB
scripts.clarity.ms/0.8.59/clarity.js86400.0 s26.2 KiB
pixel.byspotify.com/ping.min.js3600.0 s10.2 KiB
siteimproveanalytics.com/js/siteanalyze_21258.js86400.0 s19.2 KiB
snap.licdn.com/li.lms-analytics/insight.min.js86400.0 s18.7 KiB
www.umb.edu/media/umassboston/site-assets/css/t4-extra-css.css3600.0 s6.9 KiB
track.gaconnector.com/gaconnector.js14400.0 s5.5 KiB
www.umb.edu/media/umassboston/site-assets/javascript/t4-extras-js.js3600.0 s4.3 KiB
www.umb.edu/media/umassboston/site-assets/javascript/rave.js3600.0 s3.2 KiB
www.umb.edu/media/umassboston/site-assets/javascript/emergency.js3600.0 s2.8 KiB
www.umb.edu/media/umassboston/site-assets/javascript/umb-umass-footer-js-min.js3600.0 s2.8 KiB
/media/umassboston/site-assets/javascript/automated-facul...3600.0 s2.4 KiB
www.umb.edu/media/umassboston/site-assets/images/new-umb-logo-blue.svg86400.0 s3.6 KiB
/media/umassboston/content-assets/images/branding-assets/...86400.0 s2.9 KiB
www.umb.edu/media/umassboston/site-assets/css/fonts.css3600.0 s1.1 KiB
www.umb.edu/media/umassboston/site-assets/javascript/umb-umass-header-js-min.js3600.0 s1.0 KiB
success.umb.edu/ping1793.0 s963 B
go.umb.edu/ping1793.0 s951 B
/collect?v=2&fmt=js&pid=4609314&time=1776900983972&url=ht...0.0 ms694 B
/idsync/ex/receive/check?partner_id=2305&partner_device_i...0.0 ms428 B
/syncMe?partnerDomain=simpli.fi&idType=cookie&partnerUser...0.0 ms389 B
ps.eyeota.net/match?bid=irm51m1&uid=6315F7753DB94506A9B5914374395AAD0.0 ms354 B
/profiles_engine/ProfilesEngineServlet?at=20&dpi=21243074...0.0 ms219 B
simplifi.partners.tremorhub.com/sync?UISF=60DDA17CE3AD45BCA2D771B2D78EFF4F0.0 ms175 B
/tr/?id=409483902956545&ev=PageView&dl=https%3A%2F%2Fwww....0.0 ms16 B
/tr/?id=839846335654893&ev=PageView&dl=https%3A%2F%2Fwww....0.0 ms16 B
/prod01/umassbostonedu-cdn-pxl/media/umassboston/content-...0.0 ms0 B
/prod01/umassbostonedu-cdn-pxl/media/umassboston/content-...0.0 ms0 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.

URLEst Savings
/s/materialsymbolsoutlined/v331/kJEhBvYX7BgnkSrUwT8OhrdQw...495 ms
www.umb.edu/media/umassboston/site-assets/fonts/ABCWhyte-Book.woff2415 ms
www.umb.edu/media/umassboston/site-assets/fonts/ABCArizonaSerif-Bold.woff2415 ms
www.umb.edu/media/umassboston/site-assets/fonts/ABCWhyte-Medium.woff2415 ms
www.umb.edu/media/umassboston/site-assets/fonts/ABCWhyte-Bold.woff410 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:28.062 source:map[type:text value:[unattributed]]] map[reflowTime:3.232 source:map[column:23 line:7 type:source-location url:webpack://build/./src/js/components/header.js? urlProvider:network]] map[reflowTime:5.413 source:map[column:19 line:13 type:source-location url:webpack://build/./node_modules/swiper/core/update/updateSize.js? urlProvider:network]] map[reflowTime:0.905 source:map[column:65 line:744 type:source-location url:webpack://build/./node_modules/dom7/dom7.esm.js? urlProvider:network]] map[reflowTime:1.119 source:map[column:68 line:9 type:source-location url:webpack://build/./node_modules/swiper/core/update/updateSlidesOffset.js? urlProvider:network]] map[reflowTime:2.376 source:map[column:47 line:112 type:source-location url:webpack://build/./node_modules/swiper/modules/scrollbar/scrollbar.js? urlProvider:network]]]

Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLResource SizeEst Savings
UMass Boston Celebrates Opening of New Police & Public Safety Station div.flow > div.feature > div.frame > img
www.umb.edu/media/umassboston/editor-uploads/news-2025/Police-Ribbon-Cutting.jpg440.5 KiB434.4 KiB
Boston Public Schools, UMass Boston Partner on Student AI Literacy Initiative div.grid > div.flow > div.frame > img
/media/umassboston/editor-uploads/news-2025/Chancellor-Ma...389.1 KiB347.0 KiB
div.pin-scroll__left > div.pin-scroll__sticky > div.bg-static > ::after div.pin-scroll__left > div.pin-scroll__sticky > div.bg-static > ::after
www.umb.edu/media/umassboston/site-assets/images/static.png341.2 KiB221.9 KiB
University Hosts Night of Scholarship Event and Discussion of Latino Education … div.flow > div.feature > div.frame > img
/media/umassboston/editor-uploads/news-2025/7A286394-5258...166.9 KiB160.8 KiB
researchers working in the wet labs at UMass Boston's Integrated Science Complex div.stat > div.relative > div.frame > img
/media/umassboston/content-assets/images/homepage/Male-Fe...164.4 KiB156.7 KiB
A student smiles while working in an audio production booth wearing a bright re… div.feature-home > div.image-with-hanger-2 > div.frame > img
/media/umassboston/content-assets/images/homepage/mixer-p...151.8 KiB139.6 KiB
International student stands in front of flags on balcony in Campus Center. div.stat > div.relative > div.frame > img
www.umb.edu/media/internationalstudents-UMB20140124-0994_900x900.jpg131.0 KiB123.4 KiB
Stefan sits in the cafeteria looking thoughtfully at camera. div.swiper-slide > div.testimonial > div.frame > img
/media/umassboston/content-assets/images/homepage/stefan-...120.2 KiB110.9 KiB
Stefan sits in wheelchair talks with two students in cafeteria. div.stat > div.relative > div.frame > img
/media/umassboston/content-assets/images/homepage/UMass-B...108.2 KiB101.8 KiB
Anjali in nursing scrubs stands in nursing lab. div.swiper-slide > div.testimonial > div.frame > img
/media/umassboston/content-assets/images/homepage/Anjali-...118.4 KiB101.7 KiB
Mya-Jai holds flute smiling in the auditorium. div.swiper-slide > div.testimonial > div.frame > img
/media/umassboston/content-assets/images/homepage/mya-jai...116.4 KiB101.0 KiB
Harley smiles standing in Uhall lobby. div.swiper-slide > div.testimonial > div.frame > img
/media/umassboston/content-assets/images/homepage/Harley-...113.5 KiB99.9 KiB
2 attend the Pow Wow on Campus Center lawn. div.stat > div.relative > div.frame > img
/media/umassboston/content-assets/images/homepage/3rd-mos...91.0 KiB85.7 KiB
2 sit outside at commencement in caps & gowns, 1 holds up diploma. div.stat > div.relative > div.frame > img
/media/umassboston/content-assets/images/homepage/social-...88.6 KiB83.4 KiB
Student poses in front of ISC railing. div.stat > div.relative > div.frame > img
/media/umassboston/content-assets/images/homepage/student...86.1 KiB81.0 KiB
Eden wearing cooking uniform stands in Campus Center kitchen. div.swiper-slide > div.testimonial > div.frame > img
/media/umassboston/content-assets/images/homepage/eden-UM...94.2 KiB78.0 KiB
Three UMass Boston students, a woman and two men, smiling div.feature-home > div.image-with-hanger-2 > div.frame > img
/media/umassboston/content-assets/images/homepage/3incamp...88.8 KiB72.7 KiB
Hamad-Schifferli working with graduate student, Josselyn Mata Calidonio in the … div > article.timely-update > div.frame > img
/media/umassboston/editor-uploads/research/images/R1-Prof...70.5 KiB38.9 KiB
International flags on railings in campus center view from balcony. div.pin-scroll__left > div.pin-scroll__sticky > div.bg-static > img.pin-scroll__background
/media/umassboston/content-assets/images/test/campus-cent...79.2 KiB20.7 KiB
div.canvas > div.hero > div.hero__media > video#video_lib div.canvas > div.hero > div.hero__media > video#video_lib
/fit-in/1920x1080/filters:quality(40)/filters:format(webp...57.1 KiB20.3 KiB

Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-19-VIDEO
nodeLabel: div.canvas > div.hero > div.hero__media > video#video_lib
path: 1,HTML,1,BODY,4,DIV,3,DIV,5,DIV,0,DIV,2,VIDEO
selector: div.canvas > div.hero > div.hero__media > video#video_lib
snippet: <video id="video_lib" muted="" loop="" autoplay="" playsinline="" preload="none" poster="https://pxl-umassbostonedu.terminalfour.net/fit-in/1920x1080/filters:quali…" class="absolute">

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.

URLTransfer SizeDuration
fonts.googleapis.com/icon?family=Material+Icons423 B66 ms
/css2?family=Material+Symbols+Outlined:opsz,wght,FILL,GRA...850 B282 ms
cdnjs.cloudflare.com/ajax/libs/font-awesome/4.6.3/css/font-awesome.min.css5.9 KiB269 ms
www.umb.edu/media/umassboston/site-assets/css/umass-extra-css.css19.2 KiB56 ms
www.umb.edu/media/umassboston/site-assets/css/fonts.css1.1 KiB
www.umb.edu/media/umassboston/site-assets/css/t4-extra-css.css6.9 KiB
www.umb.edu/media/umassboston/site-assets/css/main0610.css31.8 KiB168 ms

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: 820 ms
URLTime Spent
umb.edu/820 ms
www.umb.edu/0.0 ms

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: 80 ms 15.7 KiB
URLTransfer SizeEst Savings
www.umb.edu/media/umassboston/site-assets/css/main0610.css31.8 KiB9.6 KiB
www.umb.edu/media/umassboston/site-assets/css/umass-extra-css.css19.2 KiB6.2 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: 80 ms 39.8 KiB
URLTransfer SizeEst Savings
www.umb.edu/media/umassboston/site-assets/css/main0610.css31.0 KiB22.4 KiB
www.umb.edu/media/umassboston/site-assets/css/umass-extra-css.css18.3 KiB17.4 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 293.6 KiB
URLTransfer SizeEst Savings
www.googletagmanager.com/gtag/js?id=G-M8C7CNEF94&cx=c&gtm=4e64k1169.7 KiB67.4 KiB
www.googletagmanager.com/gtag/js?id=AW-795115797&cx=c&gtm=4e64k1144.4 KiB57.5 KiB
analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMA.js105.2 KiB55.7 KiB
www.googletagmanager.com/gtm.js?id=GTM-PXJ923G188.9 KiB53.4 KiB
connect.facebook.net/en_US/fbevents.js96.5 KiB33.1 KiB
/signals/config/839846335654893?v=2.9.303&r=stable&domain...96.8 KiB26.5 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
/prod01/umassbostonedu-cdn-pxl/media/umassboston/content-...6.7 MiB
/s/materialsymbolsoutlined/v331/kJEhBvYX7BgnkSrUwT8OhrdQw...3.7 MiB
www.umb.edu/media/umassboston/editor-uploads/news-2025/Police-Ribbon-Cutting.jpg442.0 KiB
/media/umassboston/editor-uploads/news-2025/Chancellor-Ma...390.5 KiB
www.umb.edu/media/umassboston/site-assets/images/static.png342.5 KiB
www.googletagmanager.com/gtm.js?id=GTM-PXJ923G189.2 KiB
/media/umassboston/content-assets/images/homepage/freedom...177.6 KiB
www.umb.edu/media/umassboston/site-assets/javascript/main.js176.6 KiB
www.googletagmanager.com/gtag/js?id=G-M8C7CNEF94&cx=c&gtm=4e64k1169.8 KiB
/media/umassboston/editor-uploads/news-2025/7A286394-5258...168.0 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
Sitting in his wheelchair on the field at Fenway park, Stefan wears a Red Sox e… div#swiper-wrapper-9a8ca2c62a366772 > div.swiper-slide > a.gallery__image > img
/media/umassboston/content-assets/images/homepage/boston-...
Paramount Theater, theater district Boston. div#swiper-wrapper-9a8ca2c62a366772 > div.swiper-slide > a.gallery__image > img
/media/umassboston/content-assets/images/homepage/theater...
4 students in UMB apparel walk in the Boston Public Gardens past the gates. div#swiper-wrapper-9a8ca2c62a366772 > div.swiper-slide > a.gallery__image > img
/media/umassboston/content-assets/images/homepage/student...
Chinatown Gate Boston. div#swiper-wrapper-9a8ca2c62a366772 > div.swiper-slide > a.gallery__image > img
/media/umassboston/content-assets/images/homepage/chinato...
Breathe Life Mural Rob-ProBlak-Gibbs-2017, Roxbury. div#swiper-wrapper-9a8ca2c62a366772 > div.swiper-slide > a.gallery__image > img
/media/umassboston/content-assets/images/homepage/roxbury...
Student holds a banh mi sandwich in front of a shop in Dorchester. div#swiper-wrapper-9a8ca2c62a366772 > div.swiper-slide > a.gallery__image > img
www.umb.edu/media/Boston-banhmi-SandwichPhoto-JessieLi-1200x800.jpg
Freedom trail viewed from street level, feet on sidewalk. div#swiper-wrapper-9a8ca2c62a366772 > div.swiper-slide > a.gallery__image > img
/media/umassboston/content-assets/images/homepage/freedom...
Two women in wool coats on Boston Common. div#swiper-wrapper-9a8ca2c62a366772 > div.swiper-slide > a.gallery__image > img
/media/umassboston/content-assets/images/homepage/womenn-...
Three UMass Boston students, a woman and two men, smiling div.feature-home > div.image-with-hanger-2 > div.frame > img
/media/umassboston/content-assets/images/homepage/3incamp...
A student smiles while working in an audio production booth wearing a bright re… div.feature-home > div.image-with-hanger-2 > div.frame > img
/media/umassboston/content-assets/images/homepage/mixer-p...
Harley smiles standing in Uhall lobby. div.swiper-slide > div.testimonial > div.frame > img
/media/umassboston/content-assets/images/homepage/Harley-...
Anjali in nursing scrubs stands in nursing lab. div.swiper-slide > div.testimonial > div.frame > img
/media/umassboston/content-assets/images/homepage/Anjali-...
Stefan sits in the cafeteria looking thoughtfully at camera. div.swiper-slide > div.testimonial > div.frame > img
/media/umassboston/content-assets/images/homepage/stefan-...
Eden wearing cooking uniform stands in Campus Center kitchen. div.swiper-slide > div.testimonial > div.frame > img
/media/umassboston/content-assets/images/homepage/eden-UM...
Mya-Jai holds flute smiling in the auditorium. div.swiper-slide > div.testimonial > div.frame > img
/media/umassboston/content-assets/images/homepage/mya-jai...
Valerie stands in lobby of Uhall. div.swiper-slide > div.testimonial > div.frame > img
/media/umassboston/content-assets/images/homepage/valerie...
Student poses in front of ISC railing. div.stat > div.relative > div.frame > img
/media/umassboston/content-assets/images/homepage/student...
International student stands in front of flags on balcony in Campus Center. div.stat > div.relative > div.frame > img
www.umb.edu/media/internationalstudents-UMB20140124-0994_900x900.jpg
2 attend the Pow Wow on Campus Center lawn. div.stat > div.relative > div.frame > img
/media/umassboston/content-assets/images/homepage/3rd-mos...
2 sit outside at commencement in caps & gowns, 1 holds up diploma. div.stat > div.relative > div.frame > img
/media/umassboston/content-assets/images/homepage/social-...
Stefan sits in wheelchair talks with two students in cafeteria. div.stat > div.relative > div.frame > img
/media/umassboston/content-assets/images/homepage/UMass-B...
researchers working in the wet labs at UMass Boston's Integrated Science Complex div.stat > div.relative > div.frame > img
/media/umassboston/content-assets/images/homepage/Male-Fe...
Hamad-Schifferli working with graduate student, Josselyn Mata Calidonio in the … div > article.timely-update > div.frame > img
/media/umassboston/editor-uploads/research/images/R1-Prof...
UMass Boston Celebrates Opening of New Police & Public Safety Station div.flow > div.feature > div.frame > img
www.umb.edu/media/umassboston/editor-uploads/news-2025/Police-Ribbon-Cutting.jpg
Boston Public Schools, UMass Boston Partner on Student AI Literacy Initiative div.grid > div.flow > div.frame > img
/media/umassboston/editor-uploads/news-2025/Chancellor-Ma...
University Hosts Night of Scholarship Event and Discussion of Latino Education … div.flow > div.feature > div.frame > img
/media/umassboston/editor-uploads/news-2025/7A286394-5258...

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

●Max Potential First Input Delay 100 ms
●Layout shift culprits
●Optimize DOM size
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Minify JavaScript
●User Timing marks and measures 10 user timings
●JavaScript execution time 0.7 s
●Minimizes main-thread work 1.4 s
●Avoid long main-thread tasks 6 long tasks found
●Avoid non-composited animations 4 animated elements found
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 200 ms
●Server Backend Latencies 230 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 20 ms
●Avoid large layout shifts 2 layout shifts found
○INP breakdown
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
●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
●Touch targets have sufficient size and spacing.
●Heading elements appear in a sequentially-descending order
●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
○`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.
○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
○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.
○Elements with visible text labels have matching accessible names.
○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.
73

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
AttributionReporting
snap.licdn.com/li.lms-analytics/insight.min.js

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
bcp.crwdcntrl.net/map/c=7625/tp=SIMP/tpid=280694C246834C4180D17B9D3121611B
Failed to load resource: the server responded with a status of 404 ()
idsync.rlcdn.com/419566.gif?partner_uid=17D37136A0E8492E9AABBD200B8465BD
Failed to load resource: the server responded with a status of 451 ()
www.umb.edu/media/umassboston/site-assets/javascript/umb-umass-footer-js-min.js
Missing required DOM elements.
www.googletagmanager.com/gtm.js?id=GTM-PXJ923G line 236, col 503
Uncaught [object Object]
www.googletagmanager.com/gtm.js?id=GTM-PXJ923G line 236, col 503
Uncaught [object Object]

Issues logged to the `Issues` panel in Chrome Devtools indicate unresolved problems. They can come from network request failures, insufficient security controls, and other browser concerns. Open up the Issues panel in Chrome DevTools for more details on each issue.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Issue type
Cookie

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.

URL
www.umb.edu/media/umassboston/site-assets/javascript/main.js
●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
●Ensure CSP is effective against XSS attacks
●Use a strong HSTS policy
●Ensure proper origin isolation with COOP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
○Redirects HTTP traffic to HTTPS
○Mitigate clickjacking with XFO or CSP
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.umb.edu/research/r1-research-classification/Learn 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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