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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.

54

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/default/files/styles/565_400/public/fra_1274-tagli...1209600.0 s423.9 KiB
ingestion.webanalytics.italia.it/matomo.js86400.0 s65.6 KiB
/sites/default/files/styles/275_200/public/committing_to_...1209600.0 s207.6 KiB
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/bootstrap/css/bootstrap.css1209600.0 s144.4 KiB
/sites/default/files/styles/760_501/public/fra_8830_0.jpg...1209600.0 s131.0 KiB
/sites/default/files/js/js_tr173tNWW2A1vvp5JmASPGVfECRtOf...1209600.0 s129.9 KiB
/sites/default/files/styles/275_200/public/civis_4.png?it...1209600.0 s129.8 KiB
/sites/default/files/styles/565_200/public/sapienza_nei_r...1209600.0 s127.3 KiB
/sites/default/files/styles/275_200/public/header_newslet...1209600.0 s115.8 KiB
/sites/default/files/styles/565_200/public/31542481691_59...1209600.0 s108.2 KiB
/sites/default/files/styles/275_200/public/ricercatore.pn...1209600.0 s101.1 KiB
/sites/default/files/js/js_f3Nfp_OSqooZcUvD7ceXPeRIjxSPr0...1209600.0 s91.2 KiB
/sites/default/files/styles/275_200/public/dsc_4605_0_0.j...1209600.0 s89.5 KiB
/sites/default/files/styles/275_200/public/immagine_appel...1209600.0 s85.5 KiB
/sites/default/files/js/js_r4aPdznsjKgvtqACP6O-8IT40PlxTR...1209600.0 s64.8 KiB
/sites/default/files/styles/275_400/public/lumaca_vampiro...1209600.0 s64.0 KiB
/sites/default/files/styles/275_200/public/cassetta_degli...1209600.0 s63.2 KiB
/sites/default/files/styles/565_200/public/adobestock_939...1209600.0 s61.2 KiB
/sites/default/files/styles/565_200/public/banner_templat...1209600.0 s53.4 KiB
/sites/default/files/styles/565_200/public/dsc_3311.jpg?i...1209600.0 s53.2 KiB
/sites/default/files/styles/275_200/public/9._arslantepe_...1209600.0 s48.0 KiB
/sites/default/files/js/js_FYWFIKatb9v1OxQnDak6_t2qpyRgub...1209600.0 s40.8 KiB
/sites/all/themes/sapienza_bootstrap/bootstrap/js/bootstr...1209600.0 s36.4 KiB
/sites/default/files/styles/275_400/public/laboratorio_ri...1209600.0 s35.9 KiB
/sites/default/files/js/js_9Rus79ChiI2hXGY4ky82J2TDHJZsnY...1209600.0 s35.8 KiB
/sites/default/files/styles/275_200/public/nigro_gerico_r...1209600.0 s35.1 KiB
/sites/default/files/styles/275_400/public/foto_laborator...1209600.0 s34.7 KiB
/sites/default/files/styles/565_400/public/strutture.png?...1209600.0 s32.3 KiB
/sites/all/modules/uniroma1_opensans/css/font-awesome.min...1209600.0 s30.7 KiB
/sites/default/files/styles/275_400/public/foto_pupille.j...1209600.0 s28.4 KiB
/sites/default/files/styles/565_200/public/template-1080x...1209600.0 s28.4 KiB
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/style.css?tds5hn1209600.0 s28.4 KiB
/sites/default/files/styles/565_400/public/internazionale...1209600.0 s27.6 KiB
/sites/default/files/styles/565_400/public/ciao_1_0.png?i...1209600.0 s25.6 KiB
/sites/default/files/styles/275_200/public/adobestock_587...1209600.0 s25.2 KiB
/sites/default/files/styles/565_400/public/logo_civis_new...1209600.0 s25.2 KiB
www.uniroma1.it/sites/all/modules/calendar/css/calendar_multiday.css?tds5hn1209600.0 s20.0 KiB
/sites/default/files/styles/275_200/public/adobestock_141...1209600.0 s19.0 KiB
/sites/default/files/styles/565_400/public/bandiera-union...1209600.0 s18.9 KiB
/sites/default/files/styles/275_200/public/technopole_int...1209600.0 s18.7 KiB
/sites/default/files/styles/565_400/public/fondazione.png...1209600.0 s18.1 KiB
/sites/default/files/styles/275_200/public/5x1000.jpg?ito...1209600.0 s15.2 KiB
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/menu.css?tds5hn1209600.0 s15.1 KiB
/sites/default/files/styles/565_400/public/terza-missione...1209600.0 s15.0 KiB
/sites/all/modules/jquery_update/replace/ui/themes/base/m...1209600.0 s13.7 KiB
www.uniroma1.it/sites/all/themes/bootstrap/css/3.3.5/overrides.min.css?tds5hn1209600.0 s12.7 KiB
www.uniroma1.it/sites/all/modules/uniroma1_2025/css/dashboard.css?tds5hn1209600.0 s11.8 KiB
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/ricerca3.css?tds5hn1209600.0 s11.4 KiB
/sites/default/files/styles/565_400/public/icona_inclusio...1209600.0 s11.1 KiB
/sites/default/files/styles/565_400/public/icona-pagopa.p...1209600.0 s10.8 KiB
/sites/default/files/styles/565_400/public/box-target-sto...1209600.0 s10.0 KiB
/sites/default/files/styles/565_400/public/corsi_0.png?it...1209600.0 s9.5 KiB
/sites/default/files/styles/565_400/public/icona_sostenib...1209600.0 s8.9 KiB
/sites/default/files/styles/565_400/public/ricerca.png?it...1209600.0 s8.5 KiB
/sites/default/files/js/js_L50O_PWoAuMOxVjnzZCkNSSmI0kFwh...1209600.0 s8.4 KiB
/sites/default/files/styles/275_200/public/propilei_sapie...1209600.0 s8.4 KiB
www.uniroma1.it/sites/default/files/hqdefault_48.jpg1209600.0 s7.8 KiB
/sites/default/files/styles/565_400/public/icona_sb_565x4...1209600.0 s7.2 KiB
/sites/default/files/styles/565_400/public/icona-musica-s...1209600.0 s6.9 KiB
/sites/default/files/styles/565_400/public/icona_studenti...1209600.0 s6.9 KiB
/sites/default/files/styles/565_400/public/icona_565x400m...1209600.0 s6.7 KiB
/sites/all/modules/eu_cookie_compliance/css/eu_cookie_com...1209600.0 s6.2 KiB
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/testata.css?tds5hn1209600.0 s6.1 KiB
/sites/default/files/styles/565_400/public/icona_centro_p...1209600.0 s5.9 KiB
www.uniroma1.it/modules/system/system.base.css?tds5hn1209600.0 s5.7 KiB
/sites/all/themes/sapienza_bootstrap/css/area-riservata_A...1209600.0 s5.6 KiB
/sites/default/files/styles/565_400/public/icona_sport.pn...1209600.0 s5.5 KiB
/sites/default/files/styles/565_400/public/goccia_bianco....1209600.0 s5.2 KiB
/sites/all/modules/colorbox/styles/default/colorbox_style...1209600.0 s5.1 KiB
www.uniroma1.it/sites/default/files/images/logo/sapienza-big.png1209600.0 s4.6 KiB
/sites/default/files/js/js_v89jUZ_l2LR8NzEXW2kWQ6me12tC-j...1209600.0 s4.5 KiB
/sites/default/files/js/js__LB7MEx17zs2MwO9QA_h_AuY2YN0SC...1209600.0 s4.4 KiB
/sites/all/modules/uniroma1_infostud_login/css/spid-sp-ac...1209600.0 s4.3 KiB
/sites/default/files/styles/565_400/public/opengov.png?it...1209600.0 s4.1 KiB
www.uniroma1.it/sites/all/modules/date/date_api/date.css?tds5hn1209600.0 s4.0 KiB
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/news.css?tds5hn1209600.0 s4.0 KiB
/sites/all/modules/date/date_popup/themes/datepicker.1.7....1209600.0 s4.0 KiB
/sites/all/themes/sapienza_bootstrap/css/uniroma1_infostu...1209600.0 s4.0 KiB
/sites/all/modules/uniroma1_opensans/css/uniroma1_opensan...1209600.0 s3.9 KiB
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/images/social/flickr-box.png1209600.0 s3.6 KiB
/sites/all/themes/sapienza_bootstrap/css/sapienza-newslet...1209600.0 s3.6 KiB
/sites/all/themes/sapienza_bootstrap/css/sapienza-researc...1209600.0 s3.5 KiB
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/target.css?tds5hn1209600.0 s3.3 KiB
/sites/default/files/styles/565_400/public/ateneo.png?ito...1209600.0 s3.3 KiB
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/banner.css?tds5hn1209600.0 s3.0 KiB
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/banner-big.css?tds5hn1209600.0 s2.9 KiB
www.uniroma1.it/sites/all/modules/sapienza_phonebook/css/phonebook.css?tds5hn1209600.0 s2.8 KiB
www.uniroma1.it/sites/all/modules/sapienza_yearbook/css/yearbook.css?tds5hn1209600.0 s2.8 KiB
www.uniroma1.it/sites/all/modules/sapienza_experts/css/experts.css?tds5hn1209600.0 s2.7 KiB
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/menu-footer.css?tds5hn1209600.0 s2.6 KiB
/sites/default/files/styles/565_400/public/icona_ssas.png...1209600.0 s2.6 KiB
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/sotto-testata.css?tds5hn1209600.0 s2.6 KiB
/sites/all/modules/uniroma1_infostud_login/js/spid-sp-acc...1209600.0 s2.5 KiB
www.uniroma1.it/sites/default/files/styles/565_400/public/info.png?itok=vB0G-4qq1209600.0 s2.4 KiB
/sites/default/files/styles/565_400/public/icona_orientam...1209600.0 s2.2 KiB
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/social.css?tds5hn1209600.0 s2.1 KiB
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/cerca-corso.css?tds5hn1209600.0 s1.6 KiB
www.uniroma1.it/sites/default/files/images/login.png1209600.0 s1.6 KiB
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/calendar.css?tds5hn1209600.0 s1.4 KiB
/sites/all/modules/jquery_update/replace/ui/themes/base/m...1209600.0 s1.3 KiB
www.uniroma1.it/sites/all/modules/addtoany/addtoany.css?tds5hn1209600.0 s1.3 KiB
/sites/all/modules/ldap/ldap_servers/ldap_servers.admin.c...1209600.0 s1.2 KiB
www.uniroma1.it/sites/all/modules/sapienza_pnnr_block/css/pnnr-block.css?tds5hn1209600.0 s1.1 KiB
www.uniroma1.it/sites/all/modules/views/css/views.css?tds5hn1209600.0 s1.1 KiB
/sites/default/files/ctools/css/db4c08a83158c94fcfc8c3a94...1209600.0 s1.1 KiB
/sites/all/modules/jquery_update/replace/ui/themes/base/m...1209600.0 s1.0 KiB
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/images/cerca.png1209600.0 s1.0 KiB
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/breadcrumb.css?tds5hn1209600.0 s979 B
www.uniroma1.it/modules/field/theme/field.css?tds5hn1209600.0 s959 B
www.uniroma1.it/sites/all/modules/ctools/css/ctools.css?tds5hn1209600.0 s918 B
www.uniroma1.it/sites/all/modules/cache_control/cache_control.css?tds5hn1209600.0 s830 B
/sites/all/modules/uniroma1_infostud_idm/css/uniroma1_inf...1209600.0 s789 B
www.uniroma1.it/sites/default/files/images/social/instagram.png1209600.0 s776 B
www.uniroma1.it/sites/default/files/images/social/twitter.png1209600.0 s745 B
/sites/all/themes/sapienza_bootstrap/images/social/youtub...1209600.0 s728 B
www.uniroma1.it/sites/default/files/images/social/youtube.png1209600.0 s711 B
www.uniroma1.it/sites/default/files/images/social/facebook.png1209600.0 s621 B
www.uniroma1.it/modules/node/node.css?tds5hn1209600.0 s552 B
www.uniroma1.it/sites/all/modules/ldap/ldap_user/ldap_user.css?tds5hn1209600.0 s539 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
/sites/all/modules/uniroma1_opensans/fonts/open-sans-v34-...670 ms
/sites/all/modules/uniroma1_opensans/fonts/open-sans-v34-...635 ms
/sites/all/themes/sapienza_bootstrap/bootstrap/fonts/glyp...600 ms
/sites/all/modules/uniroma1_opensans/fonts/open-sans-v34-...535 ms
/sites/all/modules/uniroma1_opensans/fonts/open-sans-v34-...360 ms

A forced reflow occurs when JavaScript queries geometric properties (such as offsetWidth) after styles have been invalidated by a change to the DOM state. This can result in poor performance. Learn more about forced reflows and possible mitigations.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:38.773 source:map[column:10792 line:4 type:source-location url:https://www.uniroma1.it/sites/default/files/js/js_tr173tNWW2A1vvp5JmASPGVfECRtOfLyNyp-38oEYX0.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:5.999 source:map[column:30882 line:2 type:source-location url:https://www.uniroma1.it/sites/default/files/js/js_tr173tNWW2A1vvp5JmASPGVfECRtOfLyNyp-38oEYX0.js urlProvider:network]] map[reflowTime:0.228 source:map[column:30979 line:2 type:source-location url:https://www.uniroma1.it/sites/default/files/js/js_tr173tNWW2A1vvp5JmASPGVfECRtOfLyNyp-38oEYX0.js urlProvider:network]] map[reflowTime:0.19 source:map[column:31260 line:2 type:source-location url:https://www.uniroma1.it/sites/default/files/js/js_tr173tNWW2A1vvp5JmASPGVfECRtOfLyNyp-38oEYX0.js urlProvider:network]] map[reflowTime:0.051 source:map[column:31351 line:2 type:source-location url:https://www.uniroma1.it/sites/default/files/js/js_tr173tNWW2A1vvp5JmASPGVfECRtOfLyNyp-38oEYX0.js urlProvider:network]] map[reflowTime:0.087 source:map[column:31632 line:2 type:source-location url:https://www.uniroma1.it/sites/default/files/js/js_tr173tNWW2A1vvp5JmASPGVfECRtOfLyNyp-38oEYX0.js urlProvider:network]] map[reflowTime:0.149 source:map[column:31782 line:2 type:source-location url:https://www.uniroma1.it/sites/default/files/js/js_tr173tNWW2A1vvp5JmASPGVfECRtOfLyNyp-38oEYX0.js urlProvider:network]] map[reflowTime:0.13 source:map[column:31900 line:2 type:source-location url:https://www.uniroma1.it/sites/default/files/js/js_tr173tNWW2A1vvp5JmASPGVfECRtOfLyNyp-38oEYX0.js urlProvider:network]] map[reflowTime:0.148 source:map[column:41 line:1053 type:source-location url:https://www.uniroma1.it/sites/default/files/js/js_tr173tNWW2A1vvp5JmASPGVfECRtOfLyNyp-38oEYX0.js urlProvider:network]] map[reflowTime:10.621 source:map[column:5688 line:4 type:source-location url:https://www.uniroma1.it/sites/default/files/js/js_tr173tNWW2A1vvp5JmASPGVfECRtOfLyNyp-38oEYX0.js urlProvider:network]] map[reflowTime:10.456 source:map[column:4863 line:4 type:source-location url:https://www.uniroma1.it/sites/default/files/js/js_tr173tNWW2A1vvp5JmASPGVfECRtOfLyNyp-38oEYX0.js urlProvider:network]] map[reflowTime:22.448 source:map[column:3774 line:4 type:source-location url:https://www.uniroma1.it/sites/default/files/js/js_tr173tNWW2A1vvp5JmASPGVfECRtOfLyNyp-38oEYX0.js urlProvider:network]] map[reflowTime:0.172 source:map[column:27937 line:4 type:source-location url:https://www.uniroma1.it/sites/default/files/js/js_tr173tNWW2A1vvp5JmASPGVfECRtOfLyNyp-38oEYX0.js urlProvider:network]] map[reflowTime:10.632 source:map[column:27902 line:4 type:source-location url:https://www.uniroma1.it/sites/default/files/js/js_tr173tNWW2A1vvp5JmASPGVfECRtOfLyNyp-38oEYX0.js urlProvider:network]] map[reflowTime:9.532 source:map[column:26533 line:4 type:source-location url:https://www.uniroma1.it/sites/default/files/js/js_tr173tNWW2A1vvp5JmASPGVfECRtOfLyNyp-38oEYX0.js urlProvider:network]] map[reflowTime:0.116 source:map[column:6794 line:4 type:source-location url:https://www.uniroma1.it/sites/default/files/js/js_tr173tNWW2A1vvp5JmASPGVfECRtOfLyNyp-38oEYX0.js urlProvider:network]] map[reflowTime:0.933 source:map[column:15 line:772 type:source-location url:https://www.uniroma1.it/sites/default/files/js/js_f3Nfp_OSqooZcUvD7ceXPeRIjxSPr04ILU5aS05BCz4.js urlProvider:network]] map[reflowTime:3.57 source:map[column:20 line:595 type:source-location url:https://www.uniroma1.it/sites/default/files/js/js_f3Nfp_OSqooZcUvD7ceXPeRIjxSPr04ILU5aS05BCz4.js urlProvider:network]]]

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:label label:Subpart valueType:text] map[key:duration label:Duration valueType:ms]]
items: [map[duration:267.943 label:Time to first byte subpart:timeToFirstByte] map[duration:5773.145 label:Resource load delay subpart:resourceLoadDelay] map[duration:1287.564 label:Resource load duration subpart:resourceLoadDuration] map[duration:20.5 label:Element render delay subpart:elementRenderDelay]]
lhId: page-0-SECTION
nodeLabel: #IoScelgoSapienza
path: 1,HTML,1,BODY,2,DIV,0,MAIN,2,SECTION,0,DIV,0,DIV,0,DIV,0,SECTION
selector: div.container > div.row > div.col-sm-8 > section#testata
snippet: <section id="testata" class="row" style="background-image: url(&quot;https://www.uniroma1.it/sites/default/files/styles/76…&quot;);">

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-SECTION
nodeLabel: #IoScelgoSapienza
path: 1,HTML,1,BODY,2,DIV,0,MAIN,2,SECTION,0,DIV,0,DIV,0,DIV,0,SECTION
selector: div.container > div.row > div.col-sm-8 > section#testata
snippet: <section id="testata" class="row" style="background-image: url(&quot;https://www.uniroma1.it/sites/default/files/styles/76…&quot;);">

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLProtocol
www.uniroma1.it/it/http/1.1
/sites/all/modules/uniroma1_infostud_login/css/spid-sp-ac...http/1.1
www.uniroma1.it/modules/system/system.base.css?tds5hnhttp/1.1
/sites/all/modules/jquery_update/replace/ui/themes/base/m...http/1.1
/sites/all/modules/jquery_update/replace/ui/themes/base/m...http/1.1
/sites/all/modules/jquery_update/replace/ui/themes/base/m...http/1.1
www.uniroma1.it/sites/all/modules/ldap/ldap_user/ldap_user.css?tds5hnhttp/1.1
www.uniroma1.it/sites/all/modules/calendar/css/calendar_multiday.css?tds5hnhttp/1.1
www.uniroma1.it/sites/all/modules/date/date_api/date.css?tds5hnhttp/1.1
/sites/all/modules/date/date_popup/themes/datepicker.1.7....http/1.1
www.uniroma1.it/modules/field/theme/field.css?tds5hnhttp/1.1
www.uniroma1.it/modules/node/node.css?tds5hnhttp/1.1
www.uniroma1.it/sites/all/modules/sapienza_experts/css/experts.css?tds5hnhttp/1.1
www.uniroma1.it/sites/all/modules/sapienza_phonebook/css/phonebook.css?tds5hnhttp/1.1
www.uniroma1.it/sites/all/modules/sapienza_pnnr_block/css/pnnr-block.css?tds5hnhttp/1.1
www.uniroma1.it/sites/all/modules/sapienza_yearbook/css/yearbook.css?tds5hnhttp/1.1
www.uniroma1.it/sites/all/modules/uniroma1_2025/css/dashboard.css?tds5hnhttp/1.1
/sites/all/modules/uniroma1_infostud_idm/css/uniroma1_inf...http/1.1
/sites/all/modules/uniroma1_opensans/css/uniroma1_opensan...http/1.1
/sites/all/modules/uniroma1_opensans/css/font-awesome.min...http/1.1
www.uniroma1.it/sites/all/modules/views/css/views.css?tds5hnhttp/1.1
www.uniroma1.it/sites/all/modules/cache_control/cache_control.css?tds5hnhttp/1.1
/sites/all/modules/colorbox/styles/default/colorbox_style...http/1.1
www.uniroma1.it/sites/all/modules/ctools/css/ctools.css?tds5hnhttp/1.1
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www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/breadcrumb.css?tds5hnhttp/1.1
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/calendar.css?tds5hnhttp/1.1
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www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/menu.css?tds5hnhttp/1.1
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/menu-footer.css?tds5hnhttp/1.1
/sites/all/themes/sapienza_bootstrap/css/area-riservata_A...http/1.1
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/news.css?tds5hnhttp/1.1
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www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/testata.css?tds5hnhttp/1.1
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www.uniroma1.it/sites/default/files/styles/565_400/public/info.png?itok=vB0G-4qqhttp/1.1
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www.uniroma1.it/sites/default/files/images/social/facebook.pnghttp/1.1
www.uniroma1.it/sites/default/files/images/social/twitter.pnghttp/1.1
www.uniroma1.it/sites/default/files/images/social/instagram.pnghttp/1.1
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/sites/default/files/styles/565_400/public/opengov.png?it...http/1.1
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www.uniroma1.it/sites/all/themes/sapienza_bootstrap/images/cerca.pnghttp/1.1
/sites/default/files/styles/565_400/public/fra_1274-tagli...http/1.1
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/sites/default/files/styles/275_200/public/committing_to_...http/1.1
/sites/default/files/styles/275_200/public/civis_4.png?it...http/1.1
/sites/default/files/styles/275_200/public/nigro_gerico_r...http/1.1
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/sites/default/files/styles/565_200/public/dsc_3311.jpg?i...http/1.1
/sites/default/files/styles/565_200/public/sapienza_nei_r...http/1.1
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/sites/default/files/styles/275_200/public/cassetta_degli...http/1.1
/sites/default/files/styles/275_200/public/adobestock_587...http/1.1
/sites/default/files/styles/275_200/public/immagine_appel...http/1.1
/sites/default/files/styles/275_400/public/foto_laborator...http/1.1
/sites/default/files/styles/275_400/public/laboratorio_ri...http/1.1
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/sites/default/files/styles/565_400/public/logo_civis_new...http/1.1
/sites/default/files/styles/565_200/public/31542481691_59...http/1.1
/sites/all/themes/sapienza_bootstrap/bootstrap/fonts/glyp...http/1.1
/sites/all/modules/uniroma1_opensans/fonts/open-sans-v34-...http/1.1
/sites/all/modules/uniroma1_opensans/fonts/open-sans-v34-...http/1.1
/sites/all/modules/uniroma1_opensans/fonts/open-sans-v34-...http/1.1
www.uniroma1.it/favicon.icohttp/1.1

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
/sites/default/files/js/js_v89jUZ_l2LR8NzEXW2kWQ6me12tC-j...4.5 KiB830 ms
/sites/default/files/js/js_FYWFIKatb9v1OxQnDak6_t2qpyRgub...40.8 KiB2.2 s
/sites/default/files/js/js_f3Nfp_OSqooZcUvD7ceXPeRIjxSPr0...91.2 KiB3.2 s
/sites/default/files/js/js_r4aPdznsjKgvtqACP6O-8IT40PlxTR...64.8 KiB3.0 s
/sites/all/themes/sapienza_bootstrap/bootstrap/js/bootstr...36.4 KiB2.2 s
/sites/default/files/js/js_tr173tNWW2A1vvp5JmASPGVfECRtOf...129.9 KiB4.1 s
/sites/default/files/js/js__LB7MEx17zs2MwO9QA_h_AuY2YN0SC...4.4 KiB830 ms
/sites/all/themes/sapienza_bootstrap/css/sapienza-newslet...3.6 KiB830 ms
/sites/all/themes/sapienza_bootstrap/css/sapienza-researc...3.5 KiB830 ms
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/style.css?tds5hn28.4 KiB2.2 s
/sites/all/themes/sapienza_bootstrap/css/uniroma1_infostu...4.0 KiB830 ms
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/testata.css?tds5hn6.1 KiB1.0 s
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/target.css?tds5hn3.3 KiB830 ms
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/sotto-testata.css?tds5hn2.6 KiB660 ms
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/social.css?tds5hn2.1 KiB660 ms
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/ricerca3.css?tds5hn11.4 KiB1.2 s
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/news.css?tds5hn4.0 KiB830 ms
/sites/all/themes/sapienza_bootstrap/css/area-riservata_A...5.6 KiB830 ms
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/menu.css?tds5hn15.1 KiB1.9 s
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/menu-footer.css?tds5hn2.6 KiB1.0 s
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/cerca-corso.css?tds5hn1.6 KiB1.0 s
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/calendar.css?tds5hn1.4 KiB1.0 s
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/breadcrumb.css?tds5hn979 B1.0 s
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/banner-big.css?tds5hn2.9 KiB1.2 s
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/banner.css?tds5hn3.0 KiB1.2 s
www.uniroma1.it/sites/all/themes/bootstrap/css/3.3.5/overrides.min.css?tds5hn12.7 KiB1.7 s
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/bootstrap/css/bootstrap.css144.4 KiB6.1 s
/sites/default/files/ctools/css/db4c08a83158c94fcfc8c3a94...1.1 KiB1.0 s
www.uniroma1.it/sites/all/modules/addtoany/addtoany.css?tds5hn1.3 KiB1.0 s
/sites/all/modules/eu_cookie_compliance/css/eu_cookie_com...6.2 KiB1.3 s
/sites/all/modules/ldap/ldap_servers/ldap_servers.admin.c...1.2 KiB1.0 s
www.uniroma1.it/sites/all/modules/ctools/css/ctools.css?tds5hn918 B1.0 s
/sites/all/modules/colorbox/styles/default/colorbox_style...5.1 KiB1.2 s
www.uniroma1.it/sites/all/modules/cache_control/cache_control.css?tds5hn830 B1.0 s
/sites/all/modules/uniroma1_opensans/css/font-awesome.min...30.7 KiB2.7 s
www.uniroma1.it/sites/all/modules/views/css/views.css?tds5hn1.1 KiB1.0 s
/sites/all/modules/uniroma1_opensans/css/uniroma1_opensan...3.9 KiB1.2 s
www.uniroma1.it/sites/all/modules/uniroma1_2025/css/dashboard.css?tds5hn11.8 KiB1.7 s
/sites/all/modules/uniroma1_infostud_idm/css/uniroma1_inf...789 B1.0 s
www.uniroma1.it/sites/all/modules/sapienza_yearbook/css/yearbook.css?tds5hn2.8 KiB1.0 s
www.uniroma1.it/sites/all/modules/sapienza_pnnr_block/css/pnnr-block.css?tds5hn1.1 KiB1.0 s
www.uniroma1.it/sites/all/modules/sapienza_phonebook/css/phonebook.css?tds5hn2.8 KiB1.0 s
www.uniroma1.it/sites/all/modules/sapienza_experts/css/experts.css?tds5hn2.7 KiB1.0 s
www.uniroma1.it/modules/node/node.css?tds5hn552 B1.0 s
www.uniroma1.it/modules/field/theme/field.css?tds5hn959 B1.0 s
/sites/all/modules/date/date_popup/themes/datepicker.1.7....4.0 KiB1.2 s
www.uniroma1.it/sites/all/modules/date/date_api/date.css?tds5hn4.0 KiB1.2 s
www.uniroma1.it/sites/all/modules/calendar/css/calendar_multiday.css?tds5hn20.0 KiB2.2 s
www.uniroma1.it/sites/all/modules/ldap/ldap_user/ldap_user.css?tds5hn539 B1.0 s
/sites/all/modules/jquery_update/replace/ui/themes/base/m...1.0 KiB1.0 s
/sites/all/modules/jquery_update/replace/ui/themes/base/m...13.7 KiB1.7 s
/sites/all/modules/jquery_update/replace/ui/themes/base/m...1.3 KiB1.0 s
www.uniroma1.it/modules/system/system.base.css?tds5hn5.7 KiB1.2 s
maxcdn.bootstrapcdn.com/font-awesome/4.6.3/css/font-awesome.min.css7.0 KiB1.1 s
/sites/all/modules/uniroma1_infostud_login/css/spid-sp-ac...4.3 KiB830 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.col > div.box-news > a > div.bg-image-cover-center div.col > div.box-news > a > div.bg-image-cover-center
/sites/default/files/styles/565_400/public/fra_1274-tagli...423.6 KiB386.8 KiB
div.col > div.box-news > a > div.bg-image-cover-center div.col > div.box-news > a > div.bg-image-cover-center
/sites/default/files/styles/275_200/public/committing_to_...207.2 KiB182.1 KiB
div.col > div.box-news > a > div.bg-image-cover-center div.col > div.box-news > a > div.bg-image-cover-center
/sites/default/files/styles/275_200/public/civis_4.png?it...129.4 KiB120.5 KiB
div.col > div.box-news > a > div.bg-image-cover-center div.col > div.box-news > a > div.bg-image-cover-center
/sites/default/files/styles/565_200/public/sapienza_nei_r...127.0 KiB108.5 KiB
div.col > div.box-news > a > div.bg-image-cover-center div.col > div.box-news > a > div.bg-image-cover-center
/sites/default/files/styles/275_200/public/header_newslet...115.4 KiB106.5 KiB
div.col > div.box-news > a > div.bg-image-cover-center div.col > div.box-news > a > div.bg-image-cover-center
/sites/default/files/styles/275_200/public/ricercatore.pn...100.7 KiB91.8 KiB
div.col > div.box-news > a > div.bg-image-cover-center div.col > div.box-news > a > div.bg-image-cover-center
/sites/default/files/styles/275_200/public/dsc_4605_0_0.j...89.2 KiB80.2 KiB
div.col > div.box-news > a > div.bg-image-cover-center div.col > div.box-news > a > div.bg-image-cover-center
/sites/default/files/styles/275_200/public/immagine_appel...85.1 KiB76.1 KiB
#IoScelgoSapienza div.container > div.row > div.col-sm-8 > section#testata
/sites/default/files/styles/760_501/public/fra_8830_0.jpg...130.7 KiB68.7 KiB
div.col > div.box-news > a > div.bg-image-cover-center div.col > div.box-news > a > div.bg-image-cover-center
/sites/default/files/styles/275_200/public/cassetta_degli...62.8 KiB53.9 KiB
div.col > div.box-news > a > div.bg-image-cover-center div.col > div.box-news > a > div.bg-image-cover-center
/sites/default/files/styles/565_200/public/adobestock_939...60.8 KiB42.3 KiB
div.col > div.box-news > a > div.bg-image-cover-center div.col > div.box-news > a > div.bg-image-cover-center
/sites/default/files/styles/275_200/public/9._arslantepe_...47.6 KiB38.6 KiB
div.col > div.box-news > a > div.bg-image-cover-center div.col > div.box-news > a > div.bg-image-cover-center
/sites/default/files/styles/565_200/public/banner_templat...53.0 KiB34.6 KiB
div.col > div.box-news > a > div.bg-image-cover-center div.col > div.box-news > a > div.bg-image-cover-center
/sites/default/files/styles/565_200/public/dsc_3311.jpg?i...52.9 KiB34.5 KiB
div.col > div.box-news > a > div.bg-image-cover-center div.col > div.box-news > a > div.bg-image-cover-center
/sites/default/files/styles/275_200/public/nigro_gerico_r...34.7 KiB25.7 KiB
div.col > div.box-news > a > div.bg-image-cover-center div.col > div.box-news > a > div.bg-image-cover-center
/sites/default/files/styles/275_400/public/foto_laborator...34.3 KiB16.4 KiB
div.col > div.box-news > a > div.bg-image-cover-center div.col > div.box-news > a > div.bg-image-cover-center
/sites/default/files/styles/275_200/public/adobestock_587...24.8 KiB15.9 KiB
div.col > div.box-news > a > div.bg-image-cover-center div.col > div.box-news > a > div.bg-image-cover-center
/sites/default/files/styles/275_200/public/adobestock_141...18.6 KiB9.7 KiB
div.col > div.box-news > a > div.bg-image-cover-center div.col > div.box-news > a > div.bg-image-cover-center
/sites/default/files/styles/565_200/public/template-1080x...28.0 KiB9.5 KiB
div.col > div.box-news > a > div.bg-image-cover-center div.col > div.box-news > a > div.bg-image-cover-center
/sites/default/files/styles/275_200/public/technopole_int...18.3 KiB9.4 KiB
div.col > div.box-news > a > div.bg-image-cover-center div.col > div.box-news > a > div.bg-image-cover-center
/sites/default/files/styles/275_200/public/5x1000.jpg?ito...14.8 KiB5.9 KiB

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 809 ms
URLTime Spent
uniroma1.it/809 ms
www.uniroma1.it/it/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

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: 240 ms 48.0 KiB
URLTransfer SizeEst Savings
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/bootstrap/css/bootstrap.css144.4 KiB24.1 KiB
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/style.css?tds5hn28.4 KiB6.7 KiB
www.uniroma1.it/sites/all/modules/uniroma1_2025/css/dashboard.css?tds5hn11.8 KiB4.6 KiB
www.uniroma1.it/sites/all/modules/calendar/css/calendar_multiday.css?tds5hn20.0 KiB4.2 KiB
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/ricerca3.css?tds5hn11.4 KiB3.2 KiB
www.uniroma1.it/modules/system/system.base.css?tds5hn5.7 KiB2.6 KiB
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/testata.css?tds5hn6.1 KiB2.5 KiB

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: 340 ms 82.5 KiB
URLTransfer SizeEst Savings
/sites/default/files/js/js_tr173tNWW2A1vvp5JmASPGVfECRtOf...129.5 KiB27.9 KiB
/sites/default/files/js/js_f3Nfp_OSqooZcUvD7ceXPeRIjxSPr0...90.8 KiB21.3 KiB
/sites/default/files/js/js_r4aPdznsjKgvtqACP6O-8IT40PlxTR...64.4 KiB18.7 KiB
/sites/default/files/js/js_FYWFIKatb9v1OxQnDak6_t2qpyRgub...40.4 KiB9.6 KiB
/sites/default/files/js/js_L50O_PWoAuMOxVjnzZCkNSSmI0kFwh...8.0 KiB2.8 KiB
/sites/default/files/js/js_v89jUZ_l2LR8NzEXW2kWQ6me12tC-j...4.1 KiB2.2 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 1.8 s 271.1 KiB
URLTransfer SizeEst Savings
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/bootstrap/css/bootstrap.css144.0 KiB136.8 KiB
/sites/all/modules/uniroma1_opensans/css/font-awesome.min...30.3 KiB30.2 KiB
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/style.css?tds5hn28.0 KiB23.5 KiB
www.uniroma1.it/sites/all/modules/calendar/css/calendar_multiday.css?tds5hn19.6 KiB19.6 KiB
/sites/all/modules/jquery_update/replace/ui/themes/base/m...13.3 KiB13.3 KiB
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/menu.css?tds5hn14.7 KiB13.3 KiB
www.uniroma1.it/sites/all/themes/bootstrap/css/3.3.5/overrides.min.css?tds5hn12.3 KiB12.1 KiB
www.uniroma1.it/sites/all/modules/uniroma1_2025/css/dashboard.css?tds5hn11.4 KiB11.4 KiB
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/ricerca3.css?tds5hn11.0 KiB11.0 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: 1.0 s 230.1 KiB
URLTransfer SizeEst Savings
/sites/default/files/js/js_f3Nfp_OSqooZcUvD7ceXPeRIjxSPr0...90.8 KiB49.1 KiB
/sites/default/files/js/js_r4aPdznsjKgvtqACP6O-8IT40PlxTR...64.4 KiB48.9 KiB
/sites/default/files/js/js_tr173tNWW2A1vvp5JmASPGVfECRtOf...129.5 KiB43.6 KiB
ingestion.webanalytics.italia.it/matomo.js64.3 KiB38.2 KiB
/sites/all/themes/sapienza_bootstrap/bootstrap/js/bootstr...36.0 KiB29.5 KiB
/sites/default/files/js/js_9Rus79ChiI2hXGY4ky82J2TDHJZsnY...35.4 KiB20.8 KiB

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
Other1.2 s
Style & Layout834 ms
Script Evaluation792 ms
Rendering295 ms
Parse HTML & CSS80 ms
Script Parsing & Compilation48 ms
Garbage Collection12 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

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
/sites/default/files/styles/565_400/public/fra_1274-tagli...423.9 KiB
/sites/default/files/styles/275_200/public/committing_to_...207.6 KiB
www.uniroma1.it/sites/all/themes/sapienza_bootstrap/bootstrap/css/bootstrap.css144.4 KiB
/sites/default/files/styles/760_501/public/fra_8830_0.jpg...131.0 KiB
/sites/default/files/js/js_tr173tNWW2A1vvp5JmASPGVfECRtOf...129.9 KiB
/sites/default/files/styles/275_200/public/civis_4.png?it...129.8 KiB
/sites/default/files/styles/565_200/public/sapienza_nei_r...127.3 KiB
/sites/default/files/styles/275_200/public/header_newslet...115.8 KiB
/sites/default/files/styles/565_200/public/31542481691_59...108.2 KiB
/sites/default/files/styles/275_200/public/ricercatore.pn...101.1 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
logo-mobile div.container > div.navbar-header > a.navbar-brand > img.logo-mobile
www.uniroma1.it/sites/default/files/images/logo/sapienza-big.png
Facebook div.section-header > h2 > a > img
www.uniroma1.it/sites/default/files/images/social/facebook.png
Twitter div.section-header > h2 > a > img
www.uniroma1.it/sites/default/files/images/social/twitter.png
Instagram div.section-header > h2 > a > img
www.uniroma1.it/sites/default/files/images/social/instagram.png
YouTube div.section-header > h2 > a > img
www.uniroma1.it/sites/default/files/images/social/youtube.png

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

●Layout shift culprits
●Optimize DOM size
●Optimize viewport for mobile
●JavaScript execution time 0.8 s
●Avoid long main-thread tasks 4 long tasks found
●Network Requests
●Network Round Trip Times 40 ms
●Server Backend Latencies 490 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 50 ms
●Avoid large layout shifts 4 layout shifts found
○INP breakdown
○User Timing marks and measures
○Avoid non-composited animations
91

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

Adding discernable and accessible text to input buttons may help screen reader users understand the purpose of the input button. Learn more about input buttons.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.col-sm-12 > section#cerca-corso > form#ricerca-offerta-formativa > input#btn-cerca-corso div.col-sm-12 > section#cerca-corso > form#ricerca-offerta-formativa > input#btn-cerca-corso

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
Social icon div.col > div.box-social > div.post-link > a.social-icon
Scrutinio elezioni Senato Accademico e Consiglio di Amministrazione div.box-social > div.same-height > div.field-content > a
Social icon div.col > div.box-social > div.post-link > a.social-icon
Social icon div.col > div.box-social > div.post-link > a.social-icon
Social icon div.col > div.box-social > div.post-link > a.social-icon

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.

○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
●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
●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
●Touch targets have sufficient size and spacing.
●Heading elements appear in a sequentially-descending order
●Document has a main landmark.
●Deprecated ARIA roles were not used
●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-hidden="true"]` elements do not contain focusable descendents
○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 type="image">` elements have `[alt]` text
○Links are distinguishable without relying on color.
○The document does not use `<meta http-equiv="refresh">`
○`<object>` elements have alternate text
○Select elements have associated label elements.
○Skip links are focusable.
○No element has a `[tabindex]` value greater than 0
○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
○`[lang]` attributes have a valid value
○`<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.
○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.
92

Best Practices

User Experience

Image natural dimensions should be proportional to the display size and the pixel ratio to maximize image clarity. Learn how to provide responsive images.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLDisplayed sizeActual sizeExpected size
logo-mobile div.container > div.navbar-header > a.navbar-brand > img.logo-mobile
www.uniroma1.it/sites/default/files/images/logo/sapienza-big.png247 x 120247 x 120371 x 180

General

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
/sites/default/files/js/js_FYWFIKatb9v1OxQnDak6_t2qpyRgub... line 11, col 647
TypeError: Cannot read properties of undefined (reading 'length') at jQuery.cookie (https://www.uniroma1.it/sites/default/files/js/js_FYWFIKatb9v1OxQnDak6_t2qpyRgubBQV9aUEHDeFb0.js:12:648) at p.eu_cookie_compliance.BlockCookies (https://www.uniroma1.it/sites/default/files/js/js_9Rus79ChiI2hXGY4ky82J2TDHJZsnYE02SAHZrAw2QQ.js:1:33039)
●Uses HTTPS
●Avoids deprecated APIs
●Avoids third-party cookies
●Allows users to paste into input fields
●Avoids requesting the geolocation permission on page load
●Avoids requesting the notification permission on page load
●Displays images with correct aspect ratio
●Page has the HTML doctype
●Properly defines charset
●No 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
85

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

Meta descriptions may be included in search results to concisely summarize page content. Learn more about the meta description.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Canonical links suggest which URL to show in search results. Learn more about canonical links.

Why this matters

Informational: a Permissions-Policy directive showing feature -> allowed origins.

Source: MDN Permissions-Policy

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
●Page has successful HTTP status code
●Links have descriptive text
●Links are crawlable
●robots.txt is valid
●Image elements have `[alt]` attributes
●Document has a valid `hreflang`

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