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Lighthouse Mobile

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

Audit breakdown by category with detailed findings.

16

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
/maps/api/js?v=3.63&key=AIzaSyDn8VcdTA0P4Smn8HU3ygF-UbnWK...1800.0 s177.4 KiB
/c/document_library/get_file?uuid=392a2d3a-4d91-cbb1-6598...86400.0 s367.2 KiB
/c/document_library/get_file?uuid=f5a13940-4a6b-288f-ecc1...86400.0 s332.2 KiB
/documents/6323808/6603656/trempats2_web.jpg/e0601346-a3e...86400.0 s286.1 KiB
connect.facebook.net/en_US/fbevents.js1200.0 s96.6 KiB
/documents/10193/253897431/Mercat-del-Peix_concurs_notici...86400.0 s211.7 KiB
/c/document_library/get_file?uuid=8db3ef88-e4c8-ca51-d126...86400.0 s200.1 KiB
/c/document_library/get_file?uuid=ab15ad29-d079-32d2-1510...86400.0 s188.8 KiB
/c/document_library/get_file?uuid=1c678f42-0bd0-35e4-cded...86400.0 s168.7 KiB
/c/document_library/get_file?uuid=91671ca1-363e-4d48-6a6c...86400.0 s163.1 KiB
www.upf.edu/o/upf-2016-theme/css/fontawesome/webfonts/fa-solid-900.woff286400.0 s146.8 KiB
/documents/10193/243909664/Campus+Junior.jpg/3c6ce9bc-d8e...86400.0 s126.0 KiB
/signals/config/1303739654147485?v=2.9.303&r=stable&domai...1200.0 s46.6 KiB
/documents/263761847/263783960/262772755/59cdc564-a959-0a...86400.0 s98.2 KiB
/c/document_library/get_file?uuid=8b93c2d1-1a7b-f6a4-64bc...86400.0 s93.2 KiB
/c/document_library/get_file?uuid=3a2cb351-7588-bc47-4708...86400.0 s93.1 KiB
www.upf.edu/o/frontend-js-codemirror-web/__liferay__/index.js86400.0 s92.4 KiB
/documents/263761847/263783960/impacte_4_home.jpg/644a8d6...86400.0 s84.7 KiB
/documents/263761847/263783960/262772764/d9586bee-f0a9-31...86400.0 s81.5 KiB
www.gstatic.com/feedback/js/help/prod/service/lazy.min.js3000.0 s39.4 KiB
/c/document_library/get_file?uuid=6569e042-9fe5-f03c-3e31...86400.0 s71.7 KiB
/documents/263761847/263783960/262772770/1d2d4805-dbe7-4c...86400.0 s51.1 KiB
www.upf.edu/o/frontend-taglib-clay/__liferay__/exports/@clayui$core.js86400.0 s43.8 KiB
www.upf.edu/o/frontend-js-react-web/__liferay__/exports/react-dom.js86400.0 s43.0 KiB
/c/document_library/get_file?uuid=1a40d042-10b2-200e-1251...86400.0 s40.9 KiB
www.upf.edu/documents/10193/260816695/swiper.js86400.0 s38.0 KiB
/documents/263761847/263783960/262772749/3c24fdec-3b77-fa...86400.0 s24.9 KiB
/c/document_library/get_file?uuid=695bc8f2-77d5-33f9-d95d...86400.0 s24.1 KiB
www.upf.edu/o/portal-search-web/__liferay__/index.js86400.0 s24.1 KiB
www.upf.edu/o/frontend-js-web/__liferay__/index.js86400.0 s20.0 KiB
www.upf.edu/o/frontend-js-react-web/__liferay__/exports/formik.js86400.0 s17.2 KiB
www.upf.edu/o/frontend-js-react-web/__liferay__/exports/react-dnd.js86400.0 s15.5 KiB
/documents/10193/0/Mosca-Innovació-Docent.jpg/ef9f8b09-8...86400.0 s15.2 KiB
www.upf.edu/o/frontend-taglib-clay/__liferay__/exports/@clayui$shared.js86400.0 s13.1 KiB
/documents/263761847/263783960/262772758/e4105777-dc98-67...86400.0 s12.7 KiB
www.upf.edu/o/frontend-js-spa-web/__liferay__/index.js86400.0 s11.0 KiB
/documents/6323808/310129271/EUTOPIA+black.png/dc3d6ffc-1...86400.0 s11.0 KiB
www.upf.edu/o/frontend-taglib-clay/__liferay__/exports/@clayui$drop-down.js86400.0 s10.9 KiB
www.upf.edu/o/frontend-js-components-web/__liferay__/index.js86400.0 s9.9 KiB
/documents/6323808/310129271/The+Guil+color2.png/71213373...86400.0 s7.0 KiB
www.upf.edu/o/frontend-taglib-clay/__liferay__/exports/@clayui$form.js86400.0 s6.9 KiB
www.upf.edu/o/frontend-taglib-clay/__liferay__/exports/@clayui$autocomplete.js86400.0 s6.8 KiB
/documents/6323808/310129271/4+alianza+color+(1).png/d05c...86400.0 s6.7 KiB
www.upf.edu/o/frontend-taglib-clay/__liferay__/exports/@clayui$modal.js86400.0 s6.7 KiB
/o/frontend-js-loader-modules-extender/loader.js?&mac=9Wa...86400.0 s6.5 KiB
www.upf.edu/o/frontend-taglib-clay/__liferay__/exports/@clayui$multi-select.js86400.0 s5.9 KiB
www.upf.edu/o/frontend-taglib-clay/__liferay__/exports/@clayui$card.js86400.0 s5.9 KiB
www.upf.edu/o/layout-taglib/__liferay__/index.js86400.0 s5.8 KiB
/documents/263761847/263783960/262772743/801933d0-ab0f-d0...86400.0 s5.5 KiB
www.upf.edu/o/frontend-taglib-clay/__liferay__/exports/@clayui$tooltip.js86400.0 s5.2 KiB
www.upf.edu/o/frontend-js-dependencies-web/__liferay__/exports/dom-align.js86400.0 s5.2 KiB
www.upf.edu/o/frontend-taglib-clay/__liferay__/exports/@clayui$data-provider.js86400.0 s4.9 KiB
/o/frontend-js-react-web/__liferay__/exports/react-dnd-ht...86400.0 s4.8 KiB
www.upf.edu/documents/10193/260817512/swiper.css86400.0 s4.5 KiB
/o/frontend-js-dependencies-web/__liferay__/exports/react...86400.0 s4.5 KiB
www.upf.edu/documents/10193/6775906/Logo_Eutopia_vectorial.png?v=0286400.0 s4.4 KiB
www.upf.edu/o/frontend-js-dependencies-web/__liferay__/exports/clipboard.js86400.0 s3.8 KiB
www.upf.edu/o/frontend-taglib-clay/__liferay__/exports/@clayui$pagination-bar.js86400.0 s3.8 KiB
www.upf.edu/o/frontend-taglib-clay/__liferay__/exports/@clayui$pagination.js86400.0 s3.7 KiB
www.upf.edu/o/frontend-js-dependencies-web/__liferay__/exports/uuid.js86400.0 s3.6 KiB
www.upf.edu/o/frontend-js-react-web/__liferay__/exports/react.js86400.0 s3.4 KiB
www.upf.edu/o/frontend-taglib-clay/__liferay__/exports/@clayui$popover.js86400.0 s3.2 KiB
www.upf.edu/o/frontend-taglib-clay/__liferay__/exports/@clayui$layout.js86400.0 s3.1 KiB
www.upf.edu/o/frontend-taglib-clay/__liferay__/exports/@clayui$provider.js86400.0 s3.0 KiB
/o/frontend-taglib-clay/__liferay__/exports/@clayui$local...86400.0 s3.0 KiB
www.upf.edu/documents/10193/297840437/UPF_Font.ttf?xoqodo86400.0 s2.8 KiB
www.upf.edu/o/cookies-banner-web/__liferay__/index.js86400.0 s2.5 KiB
www.upf.edu/o/frontend-taglib-clay/__liferay__/exports/@clayui$button.js86400.0 s2.5 KiB
www.upf.edu/o/frontend-taglib-clay/__liferay__/exports/@clayui$empty-state.js86400.0 s2.4 KiB
www.upf.edu/o/frontend-taglib-clay/__liferay__/exports/@clayui$alert.js86400.0 s2.3 KiB
www.upf.edu/o/frontend-taglib-clay/__liferay__/exports/@clayui$table.js86400.0 s2.3 KiB
/documents/6323808/310129271/ACUP+color+(1).png/108f54ba-...86400.0 s2.2 KiB
www.upf.edu/documents/10193/257030327/countUp.js86400.0 s2.2 KiB
www.upf.edu/o/frontend-js-react-web/__liferay__/index.js86400.0 s2.1 KiB
www.upf.edu/o/frontend-js-node-shims/__liferay__/exports/process.js86400.0 s2.1 KiB
www.upf.edu/o/frontend-taglib-clay/__liferay__/exports/@clayui$link.js86400.0 s1.8 KiB
www.upf.edu/o/frontend-taglib-clay/__liferay__/exports/@clayui$label.js86400.0 s1.7 KiB
www.upf.edu/o/frontend-js-state-web/__liferay__/index.js86400.0 s1.6 KiB
www.upf.edu/documents/6323808/6326791/HR_01.png86400.0 s1.6 KiB
www.upf.edu/o/frontend-taglib-clay/__liferay__/exports/@clayui$icon.js86400.0 s1.6 KiB
www.upf.edu/o/frontend-js-dropdown-support-web/__liferay__/index.js86400.0 s1.5 KiB
www.upf.edu/o/frontend-js-collapse-support-web/__liferay__/index.js86400.0 s1.4 KiB
/o/upf-2016-theme/js/main.js?browserId=chrome&minifierTyp...86400.0 s1.4 KiB
www.upf.edu/o/frontend-taglib-clay/__liferay__/exports/@clayui$sticker.js86400.0 s1.4 KiB
/o/frontend-taglib-clay/__liferay__/exports/@clayui$loadi...86400.0 s1.3 KiB
www.upf.edu/o/frontend-js-tabs-support-web/__liferay__/index.js86400.0 s1.2 KiB
www.upf.edu/o/frontend-taglib-clay/__liferay__/exports/@clayui$badge.js86400.0 s1.2 KiB
www.upf.edu/o/frontend-js-react-web/__liferay__/exports/prop-types.js86400.0 s1.1 KiB
www.upf.edu/o/frontend-js-dependencies-web/__liferay__/exports/fuzzy.js86400.0 s961 B
www.upf.edu/o/frontend-js-tooltip-support-web/__liferay__/index.js86400.0 s868 B
www.upf.edu/o/frontend-js-react-web/__liferay__/exports/classnames.js86400.0 s864 B
/documents/10193/297840437/icons_upf.css/fc13f30d-3cec-5e...86400.0 s632 B
www.upf.edu/o/accessibility-settings-state-web/__liferay__/index.js86400.0 s619 B
www.upf.edu/o/frontend-js-alert-support-web/__liferay__/index.js86400.0 s560 B
www.upf.edu/o/portal-template-react-renderer-impl/__liferay__/index.js86400.0 s534 B
/o/frontend-js-codemirror-web/__liferay__/exports/codemir...86400.0 s367 B
/o/frontend-js-codemirror-web/__liferay__/exports/codemir...86400.0 s346 B
/o/frontend-js-codemirror-web/__liferay__/exports/codemir...86400.0 s338 B
/tr/?id=1303739654147485&ev=PageView&dl=https%3A%2F%2Fwww...0.0 ms19 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:0.34963500000000003] map[node:map[boundingRect:map[bottom:887 height:68 left:0 right:412 top:819 width:412] lhId:page-13-DIV nodeLabel:Universitat Pompeu Fabra Estudis Recerca Serveis Transferència Universitat Info… path:1,HTML,1,BODY,0,DIV,1,DIV,0,HEADER,2,DIV,0,DIV,1,SECTION,0,DIV,1,DIV,0,DIV,3,DIV selector:div.portlet-content > div.portlet-content-container > div.portlet-body > div#mySidenav snippet:<div id="mySidenav" class="sidenav upf-personalitzat-color-deep"> type:node] score:0.332116 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:80 height:58 left:5 right:232 top:22 width:227] lhId:page-32-IMG nodeLabel:div#heading > div.site-title > a.logo > img path:1,HTML,1,BODY,0,DIV,1,DIV,0,HEADER,1,DIV,0,DIV,0,A,0,IMG selector:div#heading > div.site-title > a.logo > img snippet:<img style="max-height:58px" src="/documents/d/guest/logo_upf_35" alt=""> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:549 height:650 left:0 right:412 top:-101 width:412] lhId:page-18-DIV nodeLabel:Vine al Campus Júnior UPF Inscriu-t'hi! path:1,HTML,1,BODY,0,DIV,1,DIV,1,SECTION,2,DIV,0,DIV,0,DIV,0,DIV,0,DIV,1,SECTION,0,DIV,1,DIV,0,DIV,0,DIV,0,DIV,2,DIV,0,DIV,1,DIV,3,DIV selector:div.swiper-container > div#swiper-wrapper-891b2aac11d37f91 > div.swiper-slide > div.container snippet:<div class="container blog centre"> type:node] score:0.015591 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:6459 height:97 left:69 right:199 top:6362 width:130] lhId:page-33-IMG nodeLabel:HR Excellence in Research path:1,HTML,1,BODY,0,DIV,1,DIV,2,FOOTER,0,DIV,1,SECTION,0,DIV,1,DIV,0,DIV,1,DIV,0,DIV,0,DIV,0,DIV,4,DIV,1,A,0,IMG selector:div.row > div.col-md-3 > a > img snippet:<img alt="HR Excellence in Research" src="https://www.upf.edu/documents/6323808/6326791/HR_01.png"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:549 height:440 left:380 right:412 top:109 width:32] lhId:page-15-DIV nodeLabel:posterior - Next slide path:1,HTML,1,BODY,0,DIV,1,DIV,1,SECTION,2,DIV,0,DIV,0,DIV,0,DIV,0,DIV,1,SECTION,0,DIV,1,DIV,0,DIV,0,DIV,0,DIV,2,DIV,1,DIV,2,DIV selector:div.journal-content-article > div.swiper-container > div..impacte-1369618097 > div.swiper-button-next snippet:<div class="swiper-button-next swiper-button-disabled" tabindex="-1" role="button" aria-label="posterior - Next slide" aria-controls="swiper-wrapper-e2d4d99101e5aa9e" aria-disabled="true"> type:node] score:0.001603 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:80 height:58 left:5 right:232 top:22 width:227] lhId:page-32-IMG nodeLabel:div#heading > div.site-title > a.logo > img path:1,HTML,1,BODY,0,DIV,1,DIV,0,HEADER,1,DIV,0,DIV,0,A,0,IMG selector:div#heading > div.site-title > a.logo > img snippet:<img style="max-height:58px" src="/documents/d/guest/logo_upf_35" alt=""> type:node]]] type:subitems]] map[score:0.000229 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:80 height:58 left:5 right:232 top:22 width:227] lhId:page-32-IMG nodeLabel:div#heading > div.site-title > a.logo > img path:1,HTML,1,BODY,0,DIV,1,DIV,0,HEADER,1,DIV,0,DIV,0,A,0,IMG selector:div#heading > div.site-title > a.logo > img snippet:<img style="max-height:58px" src="/documents/d/guest/logo_upf_35" alt=""> type:node]] map[cause:Web font extra:map[type:url value:https://www.upf.edu/o/upf-2016-theme/css/fontawesome/webfonts/fa-solid-900.woff2]]] type:subitems]] map[node:map[boundingRect:map[bottom:809 height:36 left:6 right:173 top:773 width:167] lhId:page-14-A nodeLabel:MENÚ path:1,HTML,1,BODY,0,DIV,1,DIV,0,HEADER,2,DIV,0,DIV,1,SECTION,0,DIV,1,DIV,0,DIV,6,DIV,0,DIV,1,A selector:div.portlet-body > div.menu-mobil-bar > div.row > a#boto-menu-mobil snippet:<a role="button" id="boto-menu-mobil" class="col-5" href="javascript:void(0)" onclick="openNav()"> type:node] score:9.6e-05 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:80 height:58 left:5 right:232 top:22 width:227] lhId:page-32-IMG nodeLabel:div#heading > div.site-title > a.logo > img path:1,HTML,1,BODY,0,DIV,1,DIV,0,HEADER,1,DIV,0,DIV,0,A,0,IMG selector:div#heading > div.site-title > a.logo > img snippet:<img style="max-height:58px" src="/documents/d/guest/logo_upf_35" alt=""> type:node]] map[cause:Web font extra:map[type:url value:https://fonts.gstatic.com/s/titilliumweb/v19/NaPDcZTIAOhVxoMyOr9n_E7ffHjDGItzY5abuWI.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.

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:31.801 source:map[column:66017 line:13 type:source-location url:https://www.upf.edu/documents/10193/260816695/swiper.js 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:15.113 source:map[column:62 line:5944 type:source-location url:https://www.upf.edu/ urlProvider:network]] map[reflowTime:60.567 source:map[type:text value:[unattributed]]] map[reflowTime:9.933 source:map[column:7507 line:12 type:source-location url:https://www.upf.edu/documents/10193/260816695/swiper.js urlProvider:network]] map[reflowTime:13.753 source:map[column:16832 line:12 type:source-location url:https://www.upf.edu/documents/10193/260816695/swiper.js urlProvider:network]] map[reflowTime:0.41 source:map[column:22559 line:12 type:source-location url:https://www.upf.edu/documents/10193/260816695/swiper.js urlProvider:network]] map[reflowTime:1.677 source:map[column:6560 line:12 type:source-location url:https://www.upf.edu/documents/10193/260816695/swiper.js urlProvider:network]] map[reflowTime:7.972 source:map[column:51681 line:1 type:source-location url:https://code.jquery.com/jquery-3.6.0.min.js urlProvider:network]] map[reflowTime:11.653 source:map[column:52357 line:1 type:source-location url:https://code.jquery.com/jquery-3.6.0.min.js urlProvider:network]] map[reflowTime:0.417 source:map[column:52415 line:1 type:source-location url:https://code.jquery.com/jquery-3.6.0.min.js urlProvider:network]] map[reflowTime:0.303 source:map[column:52479 line:1 type:source-location url:https://code.jquery.com/jquery-3.6.0.min.js urlProvider:network]] map[reflowTime:0.477 source:map[column:53392 line:1 type:source-location url:https://code.jquery.com/jquery-3.6.0.min.js urlProvider:network]] map[reflowTime:11.882 source:map[column:7507 line:12 type:source-location url:https://www.upf.edu/documents/10193/260816695/swiper.js urlProvider:network]] map[reflowTime:17.654 source:map[column:53230 line:12 type:source-location url:https://www.upf.edu/documents/10193/260816695/swiper.js urlProvider:network]] map[reflowTime:0.706 source:map[column:16832 line:12 type:source-location url:https://www.upf.edu/documents/10193/260816695/swiper.js urlProvider:network]] map[reflowTime:0.918 source:map[column:6560 line:12 type:source-location url:https://www.upf.edu/documents/10193/260816695/swiper.js urlProvider:network]] map[reflowTime:1.148 source:map[column:7507 line:12 type:source-location url:https://www.upf.edu/documents/10193/260816695/swiper.js urlProvider:network]] map[reflowTime:1.019 source:map[column:16832 line:12 type:source-location url:https://www.upf.edu/documents/10193/260816695/swiper.js urlProvider:network]] map[reflowTime:11.111 source:map[column:7507 line:12 type:source-location url:https://www.upf.edu/documents/10193/260816695/swiper.js urlProvider:network]] map[reflowTime:17.627 source:map[column:53230 line:12 type:source-location url:https://www.upf.edu/documents/10193/260816695/swiper.js urlProvider:network]] map[reflowTime:0.991 source:map[column:16832 line:12 type:source-location url:https://www.upf.edu/documents/10193/260816695/swiper.js urlProvider:network]] map[reflowTime:1.357 source:map[column:6560 line:12 type:source-location url:https://www.upf.edu/documents/10193/260816695/swiper.js urlProvider:network]] map[reflowTime:30.65 source:map[column:45378 line:12 type:source-location url:https://www.upf.edu/documents/10193/260816695/swiper.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
div.noticia > div.elements-llistat > a > div.imatge div.noticia > div.elements-llistat > a > div.imatge
/c/document_library/get_file?uuid=f5a13940-4a6b-288f-ecc1...331.6 KiB227.7 KiB
div#swiper-wrapper-e2d4d99101e5aa9e > div.swiper-slide > a > div.imatge-gran div#swiper-wrapper-e2d4d99101e5aa9e > div.swiper-slide > a > div.imatge-gran
www.upf.edu/documents/229891609/8a3d3a7c-0233-4f47-60a3-321ef851cf79208.2 KiB123.6 KiB
div#swiper-wrapper-b82facea05556a4a > div.destacat > a > div.destacats-carousel-imatge div#swiper-wrapper-b82facea05556a4a > div.destacat > a > div.destacats-carousel-imatge
/documents/10193/253897431/Mercat-del-Peix_concurs_notici...211.3 KiB96.0 KiB
div.article-seguit-1412719392 > div.noticia > a > div.imatge div.article-seguit-1412719392 > div.noticia > a > div.imatge
/c/document_library/get_file?uuid=8db3ef88-e4c8-ca51-d126...199.7 KiB91.3 KiB
div.noticia > div.elements-llistat > a > div.imatge div.noticia > div.elements-llistat > a > div.imatge
/c/document_library/get_file?uuid=392a2d3a-4d91-cbb1-6598...366.6 KiB84.6 KiB
div.swiper-container > div#swiper-wrapper-891b2aac11d37f91 > div.swiper-slide > video#video-upf div.swiper-container > div#swiper-wrapper-891b2aac11d37f91 > div.swiper-slide > video#video-upf
/documents/10193/243909664/Campus+Junior.jpg/3c6ce9bc-d8e...125.6 KiB82.9 KiB
div#swiper-wrapper-e2d4d99101e5aa9e > div.swiper-slide > a > div.imatge-gran div#swiper-wrapper-e2d4d99101e5aa9e > div.swiper-slide > a > div.imatge-gran
/c/document_library/get_file?uuid=1c678f42-0bd0-35e4-cded...168.3 KiB82.4 KiB
div#swiper-wrapper-b82facea05556a4a > div.destacat > a > div.destacats-carousel-imatge div#swiper-wrapper-b82facea05556a4a > div.destacat > a > div.destacats-carousel-imatge
/documents/263761847/263783960/262772755/59cdc564-a959-0a...97.9 KiB78.4 KiB
div.noticia > div.elements-llistat > a > div.imatge div.noticia > div.elements-llistat > a > div.imatge
/c/document_library/get_file?uuid=ab15ad29-d079-32d2-1510...188.3 KiB66.2 KiB
div.noticia > div.elements-llistat > a > div.imatge div.noticia > div.elements-llistat > a > div.imatge
/c/document_library/get_file?uuid=3a2cb351-7588-bc47-4708...92.8 KiB39.3 KiB
div#swiper-wrapper-b82facea05556a4a > div.destacat > a > div.destacats-carousel-imatge div#swiper-wrapper-b82facea05556a4a > div.destacat > a > div.destacats-carousel-imatge
/documents/263761847/263783960/262772764/d9586bee-f0a9-31...81.2 KiB35.1 KiB
div#swiper-wrapper-b82facea05556a4a > div.destacat > a > div.destacats-carousel-imatge div#swiper-wrapper-b82facea05556a4a > div.destacat > a > div.destacats-carousel-imatge
/documents/263761847/263783960/262772770/1d2d4805-dbe7-4c...50.8 KiB11.7 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-12-IMG
nodeLabel: div.swiper-container > div#swiper-wrapper-891b2aac11d37f91 > div.swiper-slide > img.swiper-lazy
path: 1,HTML,1,BODY,0,DIV,1,DIV,1,SECTION,2,DIV,0,DIV,0,DIV,0,DIV,0,DIV,1,SECTION,0,DIV,1,DIV,0,DIV,0,DIV,0,DIV,2,DIV,0,DIV,1,DIV,1,IMG
selector: div.swiper-container > div#swiper-wrapper-891b2aac11d37f91 > div.swiper-slide > img.swiper-lazy
snippet: <img alt="" class="swiper-lazy swiper-lazy-loaded" src="/documents/10193/243909664/Campus+Junior.jpg/3c6ce9bc-d8ec-e320-ebd7-8cbbf…">

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.
title: Preconnected origins
description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.
title: Preconnect candidates
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
/combo?browserId=chrome&minifierType=js&languageId=ca_ES&...77.5 KiB303 ms
/combo?browserId=chrome&minifierType=js&languageId=ca_ES&...88.1 KiB455 ms
www.upf.edu/documents/d/global/datalayers-upf1.4 KiB152 ms
/o/frontend-js-loader-modules-extender/loader.js?&mac=9Wa...6.5 KiB
www.upf.edu/documents/d/global/gtm-upf487 B
www.upf.edu/documents/d/global/global-upf-css674 B152 ms
/combo?browserId=chrome&minifierType=js&languageId=ca_ES&...396 B
/combo?browserId=chrome&minifierType=css&themeId=upf2016t...3.1 KiB
/o/upf-2016-theme/css/main.css?browserId=chrome&themeId=u...42.1 KiB303 ms
/o/upf-2016-theme/css/clay.css?browserId=chrome&themeId=u...105.2 KiB1.1 s
/o/frontend-js-aui-web/alloy_ui.css?&mac=favIEq7hPo8AEd6k...184 B
code.jquery.com/jquery-3.6.0.min.js30.5 KiB1.1 s

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.upf.edu/o/upf-2016-theme/css/fontawesome/webfonts/fa-solid-900.woff220 ms
www.upf.edu/documents/10193/297840437/UPF_Font.ttf?xoqodo10 ms
fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBA.woff210 ms

These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 858 ms
URLTime Spent
upf.edu/858 ms
www.upf.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
Universitat Pompeu Fabra Estudis Recerca Serveis Transferència Universitat Info… div.portlet-content > div.portlet-content-container > div.portlet-body > div#mySidenav
0.332
Vine al Campus Júnior UPF Inscriu-t'hi! div.swiper-container > div#swiper-wrapper-891b2aac11d37f91 > div.swiper-slide > div.container
0.016
posterior - Next slide div.journal-content-article > div.swiper-container > div..impacte-1369618097 > div.swiper-button-next
0.002
0.000
MENÚ div.portlet-body > div.menu-mobil-bar > div.row > a#boto-menu-mobil
0.000

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Diagnostics

Minifying 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: 150 ms 23.3 KiB
URLTransfer SizeEst Savings
/o/upf-2016-theme/css/clay.css?browserId=chrome&themeId=u...105.2 KiB16.5 KiB
/o/upf-2016-theme/css/main.css?browserId=chrome&themeId=u...42.1 KiB6.8 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: 910 ms 156.3 KiB
URLTransfer SizeEst Savings
/o/upf-2016-theme/css/clay.css?browserId=chrome&themeId=u...105.1 KiB104.0 KiB
/o/upf-2016-theme/css/main.css?browserId=chrome&themeId=u...42.0 KiB40.8 KiB
17.0 KiB11.4 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: 1.2 s 640.3 KiB
URLTransfer SizeEst Savings
www.upf.edu/o/frontend-js-codemirror-web/__liferay__/index.js92.3 KiB74.2 KiB
www.googletagmanager.com/gtag/js?id=G-WD336R1B7H&cx=c&gtm=4e64k0169.9 KiB68.5 KiB
www.googletagmanager.com/gtag/js?id=G-7DWCYQLH28&cx=c&gtm=4e64k0156.9 KiB65.5 KiB
www.googletagmanager.com/gtm.js?id=GTM-HGS8134.0 KiB62.6 KiB
/combo?browserId=chrome&minifierType=js&languageId=ca_ES&...77.4 KiB59.6 KiB
www.googletagmanager.com/gtag/js?id=AW-1066573390&cx=c&gtm=4e64k0145.3 KiB55.4 KiB
/combo?browserId=chrome&minifierType=js&languageId=ca_ES&...88.0 KiB41.4 KiB
www.upf.edu/o/frontend-taglib-clay/__liferay__/exports/@clayui$core.js43.6 KiB32.7 KiB
connect.facebook.net/en_US/fbevents.js96.5 KiB32.6 KiB
www.upf.edu/documents/10193/260816695/swiper.js37.9 KiB21.5 KiB
www.upf.edu/documents/10193/260816695/swiper.js37.9 KiB21.3 KiB
www.upf.edu/documents/10193/260816695/swiper.js37.9 KiB21.3 KiB
www.upf.edu/documents/10193/260816695/swiper.js37.9 KiB21.3 KiB
www.upf.edu/documents/10193/260816695/swiper.js37.9 KiB20.8 KiB
www.upf.edu/documents/10193/260816695/swiper.js37.9 KiB20.7 KiB
www.upf.edu/o/portal-search-web/__liferay__/index.js23.9 KiB20.6 KiB

Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to reduce Javascript execution time.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTotal CPU TimeScript EvaluationScript Parse
www.upf.edu/1.8 s575 ms33 ms
www.upf.edu/documents/10193/260816695/swiper.js1.7 s122 ms103 ms
Unattributable1.5 s265 ms0.0 ms
code.jquery.com/jquery-3.6.0.min.js547 ms34 ms11 ms
/combo?browserId=chrome&minifierType=js&languageId=ca_ES&...398 ms287 ms39 ms
www.googletagmanager.com/gtag/js?id=G-7DWCYQLH28&cx=c&gtm=4e64k0397 ms333 ms60 ms
www.googletagmanager.com/gtag/js?id=G-WD336R1B7H&cx=c&gtm=4e64k0391 ms320 ms68 ms
www.googletagmanager.com/gtag/js?id=AW-1066573390&cx=c&gtm=4e64k0354 ms299 ms51 ms
www.googletagmanager.com/gtm.js?id=GTM-HGS8307 ms231 ms46 ms
www.upf.edu/o/frontend-js-spa-web/__liferay__/index.js246 ms243 ms0.4 ms
connect.facebook.net/en_US/fbevents.js207 ms160 ms45 ms
/signals/config/1303739654147485?v=2.9.303&r=stable&domai...172 ms146 ms25 ms
/combo?browserId=chrome&minifierType=js&languageId=ca_ES&...122 ms75 ms33 ms
www.upf.edu/o/frontend-js-react-web/__liferay__/exports/react-dom.js84 ms77 ms0.9 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 Evaluation3.2 s
Other2.5 s
Style & Layout1.6 s
Script Parsing & Compilation572 ms
Rendering255 ms
Parse HTML & CSS233 ms
Garbage Collection155 ms

Many navigations are performed by going back to a previous page, or forwards again. The back/forward cache (bfcache) can speed up these return navigations. Learn more about the bfcache

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reasonFailure type
Pages with cache-control:no-store header cannot enter back/forward cache.Actionable
The page has an unload handler in a sub frame.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 10.5 KiB
URLTransfer SizeEst Savings
/combo?browserId=chrome&minifierType=js&languageId=ca_ES&...77.4 KiB10.5 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
/c/document_library/get_file?uuid=392a2d3a-4d91-cbb1-6598...367.2 KiB
/c/document_library/get_file?uuid=f5a13940-4a6b-288f-ecc1...332.2 KiB
www.upf.edu/294.0 KiB
www.upf.edu/294.0 KiB
www.upf.edu/294.0 KiB
www.upf.edu/293.9 KiB
/documents/6323808/6603656/trempats2_web.jpg/e0601346-a3e...286.1 KiB
/mapspro/_/js/k=mapspro.gmeviewer.en_US.4VDasZDgDts.O/am=...245.9 KiB
/documents/10193/253897431/Mercat-del-Peix_concurs_notici...211.7 KiB
www.upf.edu/documents/229891609/8a3d3a7c-0233-4f47-60a3-321ef851cf79208.6 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
div#heading > div.site-title > a.logo > img div#heading > div.site-title > a.logo > img
www.upf.edu/documents/d/guest/logo_upf_35
Eutopia div.row > div.col-md-3 > a > img
www.upf.edu/documents/10193/6775906/Logo_Eutopia_vectorial.png?v=02
HR Excellence in Research div.row > div.col-md-3 > a > img
www.upf.edu/documents/6323808/6326791/HR_01.png

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
●User Timing marks and measures 19 user timings
●Avoid long main-thread tasks 20 long tasks found
●Avoid non-composited animations 11 animated elements found
●Network Requests
●Network Round Trip Times 10 ms
●Server Backend Latencies 220 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 310 ms
○INP breakdown
93

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

Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.row > div.accordion > div.accordion-header > a.accordion-toggle div.row > div.accordion > div.accordion-header > a.accordion-toggle
div.row > div.accordion > div.accordion-header > a.accordion-toggle div.row > div.accordion > div.accordion-header > a.accordion-toggle
div.row > div.accordion > div.accordion-header > a.accordion-toggle div.row > div.accordion > div.accordion-header > a.accordion-toggle
div.row > div.accordion > div.accordion-header > a.accordion-toggle div.row > div.accordion > div.accordion-header > a.accordion-toggle

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
Go to slide 1 div.swiper-container > div..impacte-1369618097 > div.swiper-pagination-1369618097 > span.swiper-pagination-bullet
Go to slide 2 div.swiper-container > div..impacte-1369618097 > div.swiper-pagination-1369618097 > span.swiper-pagination-bullet
Go to slide 3 div.swiper-container > div..impacte-1369618097 > div.swiper-pagination-1369618097 > span.swiper-pagination-bullet
Go to slide 4 div.swiper-container > div..impacte-1369618097 > div.swiper-pagination-1369618097 > span.swiper-pagination-bullet
Go to slide 1 div.swiper-container > div..impacte1776892122854 > div.swiper-pagination1776892122854 > span.swiper-pagination-bullet
Go to slide 2 div.swiper-container > div..impacte1776892122854 > div.swiper-pagination1776892122854 > span.swiper-pagination-bullet
Go to slide 3 div.swiper-container > div..impacte1776892122854 > div.swiper-pagination1776892122854 > span.swiper-pagination-bullet
anterior div.journal-content-article > div#swiper1434651551 > div.swipper-pagination-capsa > div.slide-arrow
Go to slide 1 div#swiper1434651551 > div.swipper-pagination-capsa > div.swiper-pagination1434651551 > span.swiper-pagination-bullet
Go to slide 2 div#swiper1434651551 > div.swipper-pagination-capsa > div.swiper-pagination1434651551 > span.swiper-pagination-bullet
Go to slide 3 div#swiper1434651551 > div.swipper-pagination-capsa > div.swiper-pagination1434651551 > span.swiper-pagination-bullet
Go to slide 4 div#swiper1434651551 > div.swipper-pagination-capsa > div.swiper-pagination1434651551 > span.swiper-pagination-bullet
posterior div.journal-content-article > div#swiper1434651551 > div.swipper-pagination-capsa > div.slide-arrow
anterior div.container > div.text-escollir > div.swipper-pagination-capsa > div.slide-arrow
Go to slide 1 div.text-escollir > div.swipper-pagination-capsa > div.swiper-pagination-1663997275 > span.swiper-pagination-bullet
Go to slide 2 div.text-escollir > div.swipper-pagination-capsa > div.swiper-pagination-1663997275 > span.swiper-pagination-bullet
Go to slide 3 div.text-escollir > div.swipper-pagination-capsa > div.swiper-pagination-1663997275 > span.swiper-pagination-bullet
Go to slide 4 div.text-escollir > div.swipper-pagination-capsa > div.swiper-pagination-1663997275 > span.swiper-pagination-bullet
Go to slide 5 div.text-escollir > div.swipper-pagination-capsa > div.swiper-pagination-1663997275 > span.swiper-pagination-bullet
Go to slide 6 div.text-escollir > div.swipper-pagination-capsa > div.swiper-pagination-1663997275 > span.swiper-pagination-bullet
Go to slide 7 div.text-escollir > div.swipper-pagination-capsa > div.swiper-pagination-1663997275 > span.swiper-pagination-bullet
Go to slide 8 div.text-escollir > div.swipper-pagination-capsa > div.swiper-pagination-1663997275 > span.swiper-pagination-bullet
Go to slide 9 div.text-escollir > div.swipper-pagination-capsa > div.swiper-pagination-1663997275 > span.swiper-pagination-bullet
Go to slide 10 div.text-escollir > div.swipper-pagination-capsa > div.swiper-pagination-1663997275 > span.swiper-pagination-bullet
Go to slide 11 div.text-escollir > div.swipper-pagination-capsa > div.swiper-pagination-1663997275 > span.swiper-pagination-bullet
Go to slide 12 div.text-escollir > div.swipper-pagination-capsa > div.swiper-pagination-1663997275 > span.swiper-pagination-bullet
posterior div.container > div.text-escollir > div.swipper-pagination-capsa > div.slide-arrow
Go to slide 1 div#swiper443643517 > div.swipper-pagination-capsa > div.swiper-pagination443643517 > span.swiper-pagination-bullet
Go to slide 2 div#swiper443643517 > div.swipper-pagination-capsa > div.swiper-pagination443643517 > span.swiper-pagination-bullet
Go to slide 3 div#swiper443643517 > div.swipper-pagination-capsa > div.swiper-pagination443643517 > span.swiper-pagination-bullet
Go to slide 4 div#swiper443643517 > div.swipper-pagination-capsa > div.swiper-pagination443643517 > span.swiper-pagination-bullet
Go to slide 5 div#swiper443643517 > div.swipper-pagination-capsa > div.swiper-pagination443643517 > span.swiper-pagination-bullet
Go to slide 6 div#swiper443643517 > div.swipper-pagination-capsa > div.swiper-pagination443643517 > span.swiper-pagination-bullet
posterior div.journal-content-article > div#swiper443643517 > div.swipper-pagination-capsa > div.slide-arrow
Go to slide 1 div.journal-content-article > div.swipper-pagination-capsa > div.swiper-pagination1876570599 > span.swiper-pagination-bullet
Go to slide 2 div.journal-content-article > div.swipper-pagination-capsa > div.swiper-pagination1876570599 > span.swiper-pagination-bullet
Go to slide 3 div.journal-content-article > div.swipper-pagination-capsa > div.swiper-pagination1876570599 > span.swiper-pagination-bullet
Go to slide 4 div.journal-content-article > div.swipper-pagination-capsa > div.swiper-pagination1876570599 > span.swiper-pagination-bullet
Go to slide 5 div.journal-content-article > div.swipper-pagination-capsa > div.swiper-pagination1876570599 > span.swiper-pagination-bullet
Go to slide 6 div.journal-content-article > div.swipper-pagination-capsa > div.swiper-pagination1876570599 > span.swiper-pagination-bullet
posterior div.asset-content > div.journal-content-article > div.swipper-pagination-capsa > div.slide-arrow

These items highlight common accessibility best practices.

○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
●`[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
●Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
●`[aria-hidden="true"]` elements do not contain focusable descendents
●Elements use only permitted ARIA attributes
●Background and foreground colors have a sufficient contrast ratio
●Document has a `<title>` element
●`<frame>` or `<iframe>` elements have a title
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●Links are distinguishable without relying on color.
●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
●`<video>` elements contain a `<track>` element with `[kind="captions"]`
●Elements with visible text labels have matching accessible names.
○`[accesskey]` values are unique
○ARIA input fields have accessible names
○ARIA `meter` elements have accessible names
○ARIA `progressbar` elements have accessible names
○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
○`[role]`s are contained by their required parent element
○Elements with the `role=text` attribute do not have focusable descendents.
○ARIA toggle fields have accessible names
○ARIA `tooltip` elements have accessible names
○ARIA `treeitem` elements have accessible names
○The page contains a heading, skip link, or landmark region
○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
○Definition list items are wrapped in `<dl>` elements
○ARIA IDs are unique
○No form fields have multiple labels
○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
○Input buttons have discernible text.
○`<input type="image">` elements have `[alt]` text
○Form elements have associated labels
○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.
○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.
81

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
connect.facebook.net/en_US/fbevents.js line 279, col 769
●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 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
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.

Crawling and Indexing

Search engines may use `href` attributes on links to crawl websites. Ensure that the `href` attribute of anchor elements links to an appropriate destination, so more pages of the site can be discovered. Learn how to make links crawlable

Why this matters

Performance issues directly impact user engagement and conversion rates.

Uncrawlable Link
close div.portlet-content-container > div.portlet-body > div#mySidenav > a.closebtn

To appear in search results, crawlers need access to your app.

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

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