https://uniroma1.it
Lighthouse Desktop
· 0 checks — Desktop Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.SCORE
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Detailed Report
Audit breakdown by category with detailed findings.
31
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.
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:1.0960489999999998] map[node:map[boundingRect:map[bottom:6553 height:6553 left:0 right:1350 top:0 width:1350] lhId:page-7-BODY nodeLabel:body.html path:1,HTML,1,BODY selector:body.html snippet:<body class="html front not-logged-in no-sidebars page-node page-node- page-node-6334 n…" style="padding-top: 120px;"> type:node] score:1 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:286 height:165 left:914 right:1021 top:121 width:107] lhId:page-15-IMG nodeLabel:Didattica path:1,HTML,1,BODY,2,DIV,0,MAIN,2,SECTION,0,DIV,0,DIV,1,DIV,0,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,0,A,0,IMG selector:div.box-target > div.square > a > img.img-responsive snippet:<img class="img-responsive" src="https://www.uniroma1.it/sites/default/files/styles/565_400/public/corsi_0.…" alt="Didattica" style="height: 165px; width: auto;"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:1013 height:223 left:0 right:1350 top:790 width:1350] lhId:page-4-SECTION nodeLabel:CIAO E URP
DOVE SIAMO
ORIENTAMENTO
SPORT
MUSEI ARTI CULTURA
CAV ANTIVIOLENZA path:1,HTML,1,BODY,2,DIV,0,MAIN,3,SECTION selector:body.html > div#fullpage > main#main > section#blocchi_highlight snippet:<section id="blocchi_highlight"> type:node] score:0.024203 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:507 height:165 left:1078 right:1247 top:342 width:169] lhId:page-17-IMG nodeLabel:Terza missione path:1,HTML,1,BODY,2,DIV,0,MAIN,2,SECTION,0,DIV,0,DIV,1,DIV,0,SECTION,0,DIV,0,DIV,3,DIV,0,DIV,0,A,0,IMG selector:div.box-target > div.square > a > img.img-responsive snippet:<img class="img-responsive" src="https://www.uniroma1.it/sites/default/files/styles/565_400/public/terza-mi…" alt="Terza missione" style="height: 165px; width: auto;"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:120 height:120 left:412 right:976 top:0 width:564] lhId:page-1-UL nodeLabel:STUDENTI
LAUREATI
DOCENTI
PERSONALE
CONTATTI path:1,HTML,1,BODY,2,DIV,0,MAIN,0,SECTION,1,NAV,1,DIV,1,DIV,0,UL selector:nav#navbar-main > div.container > div#navbar > ul.nav snippet:<ul class="nav navbar-nav menu-1"> type:node] score:0.022942 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:120 height:120 left:100 right:347 top:0 width:247] lhId:page-16-IMG nodeLabel:logo-desktop path:1,HTML,1,BODY,2,DIV,0,MAIN,0,SECTION,1,NAV,1,DIV,0,DIV,1,A,1,IMG selector:div.container > div.navbar-header > a.navbar-brand > img.logo-desktop snippet:<img class="logo-desktop" alt="logo-desktop" src="https://www.uniroma1.it/sites/default/files/images/logo/sapienza-big.png"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:543 height:201 left:1065 right:1260 top:342 width:195] lhId:page-11-DIV nodeLabel:TERZA MISSIONE path:1,HTML,1,BODY,2,DIV,0,MAIN,2,SECTION,0,DIV,0,DIV,1,DIV,0,SECTION,0,DIV,0,DIV,3,DIV selector:section#target > div.col > div.row > div.box-target snippet:<div class="box-target col-xs-12 col-sm-6 col-md-6 col-lg-6 "> type:node] score:0.01792 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:507 height:165 left:914 right:1021 top:342 width:107] lhId:page-18-IMG nodeLabel:Internazionale path:1,HTML,1,BODY,2,DIV,0,MAIN,2,SECTION,0,DIV,0,DIV,1,DIV,0,SECTION,0,DIV,0,DIV,2,DIV,0,DIV,0,A,0,IMG selector:div.box-target > div.square > a > img.img-responsive snippet:<img class="img-responsive" src="https://www.uniroma1.it/sites/default/files/styles/565_400/public/internaz…" alt="Internazionale" style="height: 165px; width: auto;"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:1013 height:223 left:0 right:1350 top:790 width:1350] lhId:page-4-SECTION nodeLabel:CIAO E URP
DOVE SIAMO
ORIENTAMENTO
SPORT
MUSEI ARTI CULTURA
CAV ANTIVIOLENZA path:1,HTML,1,BODY,2,DIV,0,MAIN,3,SECTION selector:body.html > div#fullpage > main#main > section#blocchi_highlight snippet:<section id="blocchi_highlight"> type:node] score:0.017273]]
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:0.015049] map[node:map[boundingRect:map[bottom:790 height:124 left:90 right:1260 top:666 width:1170] lhId:page-8-DIV nodeLabel:section#top-pagina > div.container > div.row > div.col-sm-12 path:1,HTML,1,BODY,2,DIV,0,MAIN,2,SECTION,0,DIV,1,DIV,0,DIV selector:section#top-pagina > div.container > div.row > div.col-sm-12 snippet:<div class="col-sm-12"> type:node] score:0.015049]]
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:0.11303] map[node:map[boundingRect:map[bottom:1013 height:223 left:0 right:1350 top:790 width:1350] lhId:page-4-SECTION nodeLabel:CIAO E URP
DOVE SIAMO
ORIENTAMENTO
SPORT
MUSEI ARTI CULTURA
CAV ANTIVIOLENZA path:1,HTML,1,BODY,2,DIV,0,MAIN,3,SECTION selector:body.html > div#fullpage > main#main > section#blocchi_highlight snippet:<section id="blocchi_highlight"> type:node] score:0.11303 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:286 height:165 left:914 right:1021 top:121 width:107] lhId:page-15-IMG nodeLabel:Didattica path:1,HTML,1,BODY,2,DIV,0,MAIN,2,SECTION,0,DIV,0,DIV,1,DIV,0,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,0,A,0,IMG selector:div.box-target > div.square > a > img.img-responsive snippet:<img class="img-responsive" src="https://www.uniroma1.it/sites/default/files/styles/565_400/public/corsi_0.…" alt="Didattica" style="height: 165px; width: auto;"> type:node]]] type:subitems]]]
Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.
Why this matters
Performance issues directly impact user engagement and conversion rates.
Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.
Why this matters
Performance issues directly impact user engagement and conversion rates.
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:179.144 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:131.138 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:1.325 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:25.408 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:8.597 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:12.544 source:map[column:3796 line:4 type:source-location url:https://www.uniroma1.it/sites/default/files/js/js_tr173tNWW2A1vvp5JmASPGVfECRtOfLyNyp-38oEYX0.js urlProvider:network]] map[reflowTime:0.132 source:map[column:28444 line:4 type:source-location url:https://www.uniroma1.it/sites/default/files/js/js_tr173tNWW2A1vvp5JmASPGVfECRtOfLyNyp-38oEYX0.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:256.2829990234375 label:Time to first byte subpart:timeToFirstByte] map[duration:5607.481000976562 label:Resource load delay subpart:resourceLoadDelay] map[duration:2265.766 label:Resource load duration subpart:resourceLoadDuration] map[duration:33.988 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("https://www.uniroma1.it/sites/default/files/styles/76…");">
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("https://www.uniroma1.it/sites/default/files/styles/76…");">
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.
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.
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.
| URL | Resource Size | Est 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 KiB | 386.8 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 KiB | 182.1 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 KiB | 120.5 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 KiB | 108.5 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 KiB | 106.5 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 KiB | 91.8 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 KiB | 80.2 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 KiB | 76.1 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 KiB | 68.7 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 KiB | 53.9 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_400/public/lumaca_vampiro... | 63.6 KiB | 45.7 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/adobestock_939... | 60.8 KiB | 42.3 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 KiB | 38.6 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 KiB | 34.6 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 KiB | 34.5 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 KiB | 25.7 KiB |
Internazionale div.box-target > div.square > a > img.img-responsive | /sites/default/files/styles/565_400/public/internazionale... | 27.2 KiB | 21.7 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/laboratorio_ri... | 35.5 KiB | 17.6 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/275_400/public/foto_laborator... | 34.3 KiB | 16.4 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 KiB | 15.9 KiB |
Terza missione div.box-target > div.square > a > img.img-responsive | /sites/default/files/styles/565_400/public/terza-missione... | 14.7 KiB | 13.3 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_400/public/foto_pupille.j... | 28.0 KiB | 10.1 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/adobestock_141... | 18.6 KiB | 9.7 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 KiB | 9.5 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 KiB | 9.4 KiB |
Cav antiviolenza div.box-target > div.square > a > img.img-responsive | /sites/default/files/styles/565_400/public/box-target-sto... | 9.6 KiB | 8.7 KiB |
DSC_3884 div.field-content > p > a > img | live.staticflickr.com/65535/54658777899_d9c6be3d1d_m.jpg | 13.3 KiB | 7.0 KiB |
Didattica div.box-target > div.square > a > img.img-responsive | /sites/default/files/styles/565_400/public/corsi_0.png?it... | 9.1 KiB | 6.9 KiB |
Ricerca scientifica div.box-target > div.square > a > img.img-responsive | /sites/default/files/styles/565_400/public/ricerca.png?it... | 8.1 KiB | 6.6 KiB |
DSC_3883 div.field-content > p > a > img | live.staticflickr.com/65535/54658770153_c4e2289064_m.jpg | 12.1 KiB | 6.0 KiB |
Musei arti cultura div.box-target > div.square > a > img.img-responsive | /sites/default/files/styles/565_400/public/icona-musica-s... | 6.6 KiB | 5.9 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/5x1000.jpg?ito... | 14.8 KiB | 5.9 KiB |
Scrutinio elezioni Senato Accademico e Consiglio di Amministrazione div.same-height > div.field-content > a > img.img-responsive | www.uniroma1.it/sites/default/files/hqdefault_48.jpg | 7.4 KiB | 5.7 KiB |
DSC_3881 div.field-content > p > a > img | live.staticflickr.com/65535/54658778094_9597fa3aaf_m.jpg | 10.7 KiB | 4.6 KiB |
Sport div.box-target > div.square > a > img.img-responsive | /sites/default/files/styles/565_400/public/icona_sport.pn... | 5.1 KiB | 4.6 KiB |
Dove siamo div.box-target > div.square > a > img.img-responsive | /sites/default/files/styles/565_400/public/goccia_bianco.... | 4.8 KiB | 4.4 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: 260 ms
| URL | Time Spent |
|---|---|
| uniroma1.it/ | 260 ms |
| www.uniroma1.it/it/ | 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.
| Element | Layout shift score |
|---|---|
body.html body.html | 1.000 |
CIAO E URP
DOVE SIAMO
ORIENTAMENTO
SPORT
MUSEI ARTI CULTURA
CAV ANTIVIOLENZA body.html > div#fullpage > main#main > section#blocchi_highlight | 0.113 |
CIAO E URP
DOVE SIAMO
ORIENTAMENTO
SPORT
MUSEI ARTI CULTURA
CAV ANTIVIOLENZA body.html > div#fullpage > main#main > section#blocchi_highlight | 0.024 |
STUDENTI
LAUREATI
DOCENTI
PERSONALE
CONTATTI nav#navbar-main > div.container > div#navbar > ul.nav | 0.023 |
TERZA MISSIONE section#target > div.col > div.row > div.box-target | 0.018 |
CIAO E URP
DOVE SIAMO
ORIENTAMENTO
SPORT
MUSEI ARTI CULTURA
CAV ANTIVIOLENZA body.html > div#fullpage > main#main > section#blocchi_highlight | 0.017 |
section#top-pagina > div.container > div.row > div.col-sm-12 section#top-pagina > div.container > div.row > div.col-sm-12 | 0.015 |
CIAO E URP
DOVE SIAMO
ORIENTAMENTO
SPORT
MUSEI ARTI CULTURA
CAV ANTIVIOLENZA body.html > div#fullpage > main#main > section#blocchi_highlight | 0.009 |
Questo sito utilizza solo cookie tecnici, propri e di terze parti, per il corre… body.html > div#sliding-popup | 0.002 |
NOTIZIE
Inaugurazione dell'anno accademico 2025-2026
Concerto MuSa Jazz Meets… body.html > div#fullpage > main#main > section#news | 0.001 |
Questo sito utilizza solo cookie tecnici, propri e di terze parti, per il corre… body.html > div#sliding-popup | 0.000 |
Questo sito utilizza solo cookie tecnici, propri e di terze parti, per il corre… body.html > div#sliding-popup | 0.000 |
Questo sito utilizza solo cookie tecnici, propri e di terze parti, per il corre… body.html > div#sliding-popup | 0.000 |
Questo sito utilizza solo cookie tecnici, propri e di terze parti, per il corre… body.html > div#sliding-popup | 0.000 |
Questo sito utilizza solo cookie tecnici, propri e di terze parti, per il corre… body.html > div#sliding-popup | 0.000 |
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 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: 60 ms 82.5 KiB
| URL | Transfer Size | Est Savings |
|---|---|---|
| /sites/default/files/js/js_tr173tNWW2A1vvp5JmASPGVfECRtOf... | 129.5 KiB | 27.9 KiB |
| /sites/default/files/js/js_f3Nfp_OSqooZcUvD7ceXPeRIjxSPr0... | 90.8 KiB | 21.3 KiB |
| /sites/default/files/js/js_r4aPdznsjKgvtqACP6O-8IT40PlxTR... | 64.4 KiB | 18.7 KiB |
| /sites/default/files/js/js_FYWFIKatb9v1OxQnDak6_t2qpyRgub... | 40.4 KiB | 9.6 KiB |
| /sites/default/files/js/js_L50O_PWoAuMOxVjnzZCkNSSmI0kFwh... | 8.0 KiB | 2.8 KiB |
| /sites/default/files/js/js_v89jUZ_l2LR8NzEXW2kWQ6me12tC-j... | 4.1 KiB | 2.2 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: 190 ms 263.8 KiB
| URL | Transfer Size | Est Savings |
|---|---|---|
| www.uniroma1.it/sites/all/themes/sapienza_bootstrap/bootstrap/css/bootstrap.css | 144.0 KiB | 130.9 KiB |
| /sites/all/modules/uniroma1_opensans/css/font-awesome.min... | 30.3 KiB | 30.3 KiB |
| www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/style.css?tds5hn | 28.0 KiB | 23.7 KiB |
| www.uniroma1.it/sites/all/modules/calendar/css/calendar_multiday.css?tds5hn | 19.6 KiB | 19.6 KiB |
| /sites/all/modules/jquery_update/replace/ui/themes/base/m... | 13.3 KiB | 13.3 KiB |
| www.uniroma1.it/sites/all/themes/bootstrap/css/3.3.5/overrides.min.css?tds5hn | 12.3 KiB | 12.1 KiB |
| www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/menu.css?tds5hn | 14.7 KiB | 11.5 KiB |
| www.uniroma1.it/sites/all/modules/uniroma1_2025/css/dashboard.css?tds5hn | 11.4 KiB | 11.4 KiB |
| www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/ricerca3.css?tds5hn | 11.0 KiB | 11.0 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: 120 ms 229.7 KiB
| URL | Transfer Size | Est Savings |
|---|---|---|
| /sites/default/files/js/js_r4aPdznsjKgvtqACP6O-8IT40PlxTR... | 64.4 KiB | 48.9 KiB |
| /sites/default/files/js/js_f3Nfp_OSqooZcUvD7ceXPeRIjxSPr0... | 90.8 KiB | 48.5 KiB |
| /sites/default/files/js/js_tr173tNWW2A1vvp5JmASPGVfECRtOf... | 129.5 KiB | 43.8 KiB |
| ingestion.webanalytics.italia.it/matomo.js | 64.3 KiB | 38.2 KiB |
| /sites/all/themes/sapienza_bootstrap/bootstrap/js/bootstr... | 36.0 KiB | 29.5 KiB |
| /sites/default/files/js/js_9Rus79ChiI2hXGY4ky82J2TDHJZsnY... | 35.4 KiB | 20.8 KiB |
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 reason | Failure type |
|---|---|
| Pages with cache-control:no-store header cannot enter back/forward cache. | Actionable |
Minifying CSS files can reduce network payload sizes. Learn how to minify CSS.
Why this matters
Performance issues directly impact user engagement and conversion rates.
Estimated savings: 0.0 ms 48.0 KiB
| URL | Transfer Size | Est Savings |
|---|---|---|
| www.uniroma1.it/sites/all/themes/sapienza_bootstrap/bootstrap/css/bootstrap.css | 144.4 KiB | 24.1 KiB |
| www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/style.css?tds5hn | 28.4 KiB | 6.7 KiB |
| www.uniroma1.it/sites/all/modules/uniroma1_2025/css/dashboard.css?tds5hn | 11.8 KiB | 4.6 KiB |
| www.uniroma1.it/sites/all/modules/calendar/css/calendar_multiday.css?tds5hn | 20.0 KiB | 4.2 KiB |
| www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/ricerca3.css?tds5hn | 11.4 KiB | 3.2 KiB |
| www.uniroma1.it/modules/system/system.base.css?tds5hn | 5.7 KiB | 2.6 KiB |
| www.uniroma1.it/sites/all/themes/sapienza_bootstrap/css/testata.css?tds5hn | 6.1 KiB | 2.5 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.
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 | |
|---|---|
Strutture div.box-target > div.square > a > img.img-responsive | /sites/default/files/styles/565_400/public/strutture.png?... |
CIAO - Informazioni per gli studenti div.box-target > div.square > a > img.img-responsive | /sites/default/files/styles/565_400/public/ciao_1_0.png?i... |
Fondazione Sapienza div.box-target > div.square > a > img.img-responsive | /sites/default/files/styles/565_400/public/fondazione.png... |
Terza missione div.box-target > div.square > a > img.img-responsive | /sites/default/files/styles/565_400/public/terza-missione... |
Ciao e Urp div.box-target > div.square > a > img.img-responsive | www.uniroma1.it/sites/default/files/styles/565_400/public/info.png?itok=vB0G-4qq |
Dove siamo div.box-target > div.square > a > img.img-responsive | /sites/default/files/styles/565_400/public/goccia_bianco.... |
Orientamento div.box-target > div.square > a > img.img-responsive | /sites/default/files/styles/565_400/public/icona_orientam... |
Sport div.box-target > div.square > a > img.img-responsive | /sites/default/files/styles/565_400/public/icona_sport.pn... |
Musei arti cultura div.box-target > div.square > a > img.img-responsive | /sites/default/files/styles/565_400/public/icona-musica-s... |
Cav antiviolenza div.box-target > div.square > a > img.img-responsive | /sites/default/files/styles/565_400/public/box-target-sto... |
Scuola superiore di studi avanzati div.box-target > div.square > a > img.img-responsive | /sites/default/files/styles/565_400/public/icona_ssas.png... |
Sistema bibliotecario Sapienza div.box-target > div.square > a > img.img-responsive | /sites/default/files/styles/565_400/public/icona_sb_565x4... |
Polo museale Sapienza Cultura div.box-target > div.square > a > img.img-responsive | /sites/default/files/styles/565_400/public/icona_centro_p... |
Assicurazione Qualità div.box-target > div.square > a > img.img-responsive | /sites/default/files/styles/565_400/public/icona_565x400m... |
Gli studenti per la qualità div.box-target > div.square > a > img.img-responsive | /sites/default/files/styles/565_400/public/icona_studenti... |
Responsabilità sociale e sostenibilità div.box-target > div.square > a > img.img-responsive | /sites/default/files/styles/565_400/public/icona_sostenib... |
Quarta missione: diversità, equità e inclusione div.box-target > div.square > a > img.img-responsive | /sites/default/files/styles/565_400/public/icona_inclusio... |
Opengov div.box-target > div.square > a > img.img-responsive | /sites/default/files/styles/565_400/public/opengov.png?it... |
Pagamenti PagoPa div.box-target > div.square > a > img.img-responsive | /sites/default/files/styles/565_400/public/icona-pagopa.p... |
Ricerca scientifica div.box-target > div.square > a > img.img-responsive | /sites/default/files/styles/565_400/public/ricerca.png?it... |
Didattica div.box-target > div.square > a > img.img-responsive | /sites/default/files/styles/565_400/public/corsi_0.png?it... |
Internazionale div.box-target > div.square > a > img.img-responsive | /sites/default/files/styles/565_400/public/internazionale... |
logo-desktop div.container > div.navbar-header > a.navbar-brand > img.logo-desktop | www.uniroma1.it/sites/default/files/images/logo/sapienza-big.png |
Login ul.nav > li.menu-login > a > img | www.uniroma1.it/sites/default/files/images/login.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.
●Optimize DOM size
●Optimize viewport for mobile
●JavaScript execution time 0.3 s
●Minimizes main-thread work 1.4 s
●Avoid long main-thread tasks 1 long task 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
○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 |
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 |
|---|
Cerca ul.nav > li.vertical-center > form.navbar-form > button#search-button |
DIDATTICA div.box-target > div.square > div.tasto-target-h3 > a |
RICERCA SCIENTIFICA div.box-target > div.square > div.tasto-target-h3 > a |
INTERNAZIONALE div.box-target > div.square > div.tasto-target-h3 > a |
TERZA MISSIONE div.box-target > div.square > div.tasto-target-h3 > a |
CIAO E URP div.box-target > div.square > div.tasto-target-h3 > a |
DOVE SIAMO div.box-target > div.square > div.tasto-target-h3 > a |
ORIENTAMENTO div.box-target > div.square > div.tasto-target-h3 > a |
SPORT div.box-target > div.square > div.tasto-target-h3 > a |
MUSEI ARTI CULTURA div.box-target > div.square > div.tasto-target-h3 > a |
CAV ANTIVIOLENZA div.box-target > div.square > div.tasto-target-h3 > a |
STRUTTURE div.box-target > div.square > div.tasto-target-h3 > a |
OPENGOV div.box-target > div.square > div.tasto-target-h3 > a |
PAGAMENTI PAGOPA div.box-target > div.square > div.tasto-target-h3 > a |
Lauree e lauree magistrali div.same-height > ul > li > a |
Scuola superiore di studi avanzati div.same-height > ul > li > a |
Corsi singoli div.same-height > ul > li > a |
Corsi di dottorato div.same-height > ul > li > a |
Corsi di specializzazione div.same-height > ul > li > a |
Scuola di ingegneria aerospaziale div.same-height > ul > li > a |
Master div.same-height > ul > li > a |
Corsi di alta formazione div.same-height > ul > li > a |
Corsi di formazione div.same-height > ul > li > a |
Summer and winter school div.same-height > ul > li > a |
Altre opportunità formative div.same-height > ul > li > a |
Andare all'estero div.same-height > ul > li > a |
Finanziamenti di Ateneo div.same-height > ul > li > a |
Scegliere Sapienza div.same-height > ul > li > a |
Accordi internazionali div.same-height > ul > li > a |
Incontri internazionali div.same-height > ul > li > a |
L'impegno per la ricerca div.same-height > ul > li > a |
Collaborazioni scientifiche div.same-height > ul > li > a |
Infrastrutture di ricerca e laboratori div.same-height > ul > li > a |
PNRR div.same-height > ul > li > a |
Finanziamenti europei e internazionali div.same-height > ul > li > a |
Finanziamenti nazionali e regionali div.same-height > ul > li > a |
Bandi Sapienza div.same-height > ul > li > a |
Tool per la ricerca div.same-height > ul > li > a |
Formazione per la ricerca div.same-height > ul > li > a |
Governance div.same-height > ul > li > a |
Chi siamo div.same-height > ul > li > a |
Assicurazione qualità div.same-height > ul > li > a |
Strutture div.same-height > ul > li > a |
Governo div.same-height > ul > li > a |
Amministrazione div.same-height > ul > li > a |
Amministrazione Trasparente div.same-height > ul > li > a |
Campus e servizi div.same-height > ul > li > a |
Comunicazione div.same-height > ul > li > a |
Fondazione Sapienza div.same-height > ul > li > a |
Bandi di gara div.same-height > ul > li > a |
Concorsi div.same-height > ul > li > a |
Bilanci div.same-height > ul > li > a |
Atti di notifica div.same-height > ul > li > a |
Albo on-line div.same-height > ul > li > a |
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
●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
●Links have a discernible name
●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
●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 display dimensions should match natural aspect ratio. Learn more about image aspect ratio.
Why this matters
Performance issues directly impact user engagement and conversion rates.
| URL | Aspect Ratio (Displayed) | Aspect Ratio (Actual) | |
|---|---|---|---|
DSC_3881 div.field-content > p > a > img | live.staticflickr.com/65535/54658778094_9597fa3aaf_m.jpg | 233 x 160 (1.46) | 240 x 160 (1.50) |
DSC_3883 div.field-content > p > a > img | live.staticflickr.com/65535/54658770153_c4e2289064_m.jpg | 233 x 160 (1.46) | 240 x 160 (1.50) |
DSC_3884 div.field-content > p > a > img | live.staticflickr.com/65535/54658777899_d9c6be3d1d_m.jpg | 233 x 240 (0.97) | 160 x 240 (0.67) |
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.
| Source | Description |
|---|---|
/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) |
/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
●Serves images with appropriate resolution
●Page has the HTML doctype
●Properly defines charset
●No issues in the `Issues` panel in Chrome Devtools
●Ensure CSP is effective against XSS attacks
●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`