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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.

21

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling

Why this matters

Performance issues directly impact user engagement and conversion rates.

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

Why this matters

Performance issues directly impact user engagement and conversion rates.

A long cache lifetime can speed up repeat visits to your page. Learn more about caching.

Why this matters

Performance issues directly impact user engagement and conversion rates.

RequestCache TTLTransfer Size
www.unam.mx/sites/default/files/images/carrusel/banneranimado-ok.gif1800.0 s1.3 MiB
www.unam.mx/sites/default/files/images/eventos/300.gif1800.0 s230.8 KiB
/sites/default/files/images/carrusel/260420-portada-gacet...1800.0 s129.8 KiB
/sites/default/files/images/carrusel/banner-1960x600-beca...1800.0 s128.1 KiB
www.unam.mx/sites/default/files/images/carrusel/500-historias-1960x600.jpg1800.0 s111.2 KiB
connect.facebook.net/es_LA/bundle/sdk.js/1200.0 s77.8 KiB
www.unam.mx/sites/default/files/images/carrusel/banner-8m-2026.jpg1800.0 s48.9 KiB
i.ytimg.com/vi_webp/DStkZOFgcMU/sddefault.webp300.0 s37.7 KiB
platform.twitter.com/widgets.js1800.0 s27.3 KiB
/sites/default/files/images/gaceta/lunes_20_abril_2026_ga...1800.0 s25.9 KiB
www.unam.mx/sites/default/files/images/boletines/2341.jpg1800.0 s24.4 KiB
www.unam.mx/sites/default/files/images/eventos/pt-2026.jpg1800.0 s21.0 KiB
/sites/default/files/js/js_rR1UpFcxYbve0531qs7TKMKfw50KNI...1800.0 s18.9 KiB
www.unam.mx/sites/default/files/images/boletines/2351.jpg1800.0 s18.5 KiB
www.google-analytics.com/analytics.js7200.0 s20.9 KiB
www.unam.mx/sites/default/files/images/eventos/informe2025.jpg1800.0 s15.8 KiB
/sites/default/files/css/css_uc1RcvZeZUNveo7aHETNpsDro7gP...1800.0 s15.2 KiB
www.unam.mx/sites/default/files/images/campanias/llvr.jpg1800.0 s10.8 KiB
www.unam.mx/cdn-cgi/challenge-platform/h/b/scripts/jsd/0b8fb825cb67/main.js?14400.0 s12.5 KiB
/sites/default/files/js/js_dWhBODswdXXk1M5Z5nyqNfGljmqwxU...1800.0 s8.9 KiB
/sites/default/files/css/css_JLCP4n47Z8AISwIm1s1TnuIbTc65...1800.0 s8.5 KiB
www.unam.mx/sites/default/files/images/campanias/ptu.jpg1800.0 s8.1 KiB
/sites/default/files/js/js_xVdESRffMtg-VD1YEgI9Mt1hde2nAM...1800.0 s6.7 KiB
www.unam.mx/sites/all/themes/unam/logo.png1800.0 s6.2 KiB
www.unam.mx/sites/default/files/images/campanias/cigu-abajo.jpg1800.0 s6.2 KiB
connect.facebook.net/es_LA/sdk.js#xfbml=1&version=v2.111200.0 s5.1 KiB
/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312...86400.0 s10.7 KiB
/sites/default/files/js/js_SpbJAG1Bu1guk20fiA-z1XncJHF44B...1800.0 s3.8 KiB
cse.google.com/cse.js?cx=000862918480106004188:wi2hxgsc9de0.0 ms3.0 KiB
/sites/default/files/css/css_Q7R7Blo9EYqLDI5rIlO_T3uTFBjI...1800.0 s2.9 KiB
/sites/default/files/css/css_dWBHPbSQWh-19e3Bc29cTHIsefj-...1800.0 s2.6 KiB
www.unam.mx/sites/default/files/tiktok-ok.jpg1800.0 s2.3 KiB
www.unam.mx/sites/default/files/images/ingles.jpg1800.0 s2.2 KiB
www.unam.mx/sites/default/files/images/logo_instagram_70.jpg1800.0 s2.1 KiB
www.unam.mx/sites/default/files/images/logo-global_0.png1800.0 s2.1 KiB
www.unam.mx/sites/default/files/images/frances.jpg1800.0 s2.0 KiB
www.unam.mx/sites/default/files/images/social/mail.png1800.0 s1.4 KiB
www.unam.mx/sites/default/files/images/social/facebook.png1800.0 s1.4 KiB
/sites/default/files/css/css_lQaZfjVpwP_oGNqdtWCSpJT1EMqX...1800.0 s1.3 KiB
www.google.com/cse/static/style/look/v6/default.css3000.0 s1.2 KiB
www.unam.mx/sites/default/files/images/social/rss.png1800.0 s1.1 KiB
/sites/default/files/js/js_o0NmOA6FrOQamIKXP181IN2QejpF72...1800.0 s1.1 KiB
www.unam.mx/sites/default/files/newsletter-unam.jpg1800.0 s1.0 KiB
www.unam.mx/sites/default/files/images/social/youtube.png1800.0 s1015 B
www.unam.mx/sites/default/files/images/social/twitter-x_0.png1800.0 s849 B
static.doubleclick.net/instream/ad_status.js900.0 s495 B
www.unam.mx/sites/all/themes/unam/images/bullet_magenta.png1800.0 s512 B

Layout shifts occur when elements move absent any user interaction. Investigate the causes of layout shifts, such as elements being added, removed, or their fonts changing as the page loads.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]
items: [map[node:map[type:text value:Total] score:0.562272] map[node:map[boundingRect:map[bottom:3455 height:3264 left:0 right:412 top:191 width:412] lhId:page-13-DIV nodeLabel:Gaceta UNAM 8M, Día Internacional de las Mujeres 475 aniversario de la Universi… path:6,HTML,2,BODY,2,DIV,1,DIV selector:body.html > div#page > div#main snippet:<div id="main"> type:node] score:0.490298 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:2432 height:200 left:140 right:280 top:2232 width:140] lhId:page-8-IMG nodeLabel:Lunes 20 de abril de 2026. El arte de gobernar (en tiempos de incertidumbre) de… path:6,HTML,2,BODY,2,DIV,1,DIV,3,DIV,1,DIV,0,DIV,1,DIV,0,DIV,0,DIV,0,DIV,1,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,A,0,IMG selector:div.views-field > div.field-content > a > img snippet:<img typeof="foaf:Image" src="https://www.unam.mx/sites/default/files/images/gaceta/lunes_20_abril_2026_…" width="280" height="400" alt="Lunes 20 de abril de 2026. El arte de gobernar (en tiempos de incertidumbr…"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:3455 height:3264 left:0 right:412 top:191 width:412] lhId:page-13-DIV nodeLabel:Gaceta UNAM 8M, Día Internacional de las Mujeres 475 aniversario de la Universi… path:6,HTML,2,BODY,2,DIV,1,DIV selector:body.html > div#page > div#main snippet:<div id="main"> type:node] score:0.037589 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:2432 height:200 left:140 right:280 top:2232 width:140] lhId:page-8-IMG nodeLabel:Lunes 20 de abril de 2026. El arte de gobernar (en tiempos de incertidumbre) de… path:6,HTML,2,BODY,2,DIV,1,DIV,3,DIV,1,DIV,0,DIV,1,DIV,0,DIV,0,DIV,0,DIV,1,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,A,0,IMG selector:div.views-field > div.field-content > a > img snippet:<img typeof="foaf:Image" src="https://www.unam.mx/sites/default/files/images/gaceta/lunes_20_abril_2026_…" width="280" height="400" alt="Lunes 20 de abril de 2026. El arte de gobernar (en tiempos de incertidumbr…"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:677 height:205 left:21 right:391 top:472 width:371] lhId:page-12-DIV nodeLabel:21 ABR BOLETÍN UNAM-2026/235 Gonzalo Celorio, Premio Cervantes 2025, resguarda … path:6,HTML,2,BODY,2,DIV,1,DIV,3,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV selector:div.inside > div.panels-flexible-region > div.inside > div#block-views-bloque-boletines-block snippet:<div id="block-views-bloque-boletines-block" class="block block-views first odd"> type:node] score:0.034385 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:2432 height:200 left:140 right:280 top:2232 width:140] lhId:page-8-IMG nodeLabel:Lunes 20 de abril de 2026. El arte de gobernar (en tiempos de incertidumbre) de… path:6,HTML,2,BODY,2,DIV,1,DIV,3,DIV,1,DIV,0,DIV,1,DIV,0,DIV,0,DIV,0,DIV,1,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,A,0,IMG selector:div.views-field > div.field-content > a > img snippet:<img typeof="foaf:Image" src="https://www.unam.mx/sites/default/files/images/gaceta/lunes_20_abril_2026_…" width="280" height="400" alt="Lunes 20 de abril de 2026. El arte de gobernar (en tiempos de incertidumbr…"> type:node]]] type:subitems]]]

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:19.748 source:map[column:9837 line:2 type:source-location url:https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.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:12.87 source:map[type:text value:[unattributed]]] map[reflowTime:1.005 source:map[column:21731 line:1 type:source-location url:https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js urlProvider:network]] map[reflowTime:0.329 source:map[column:21828 line:1 type:source-location url:https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js urlProvider:network]] map[reflowTime:0.26 source:map[column:22058 line:1 type:source-location url:https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js urlProvider:network]] map[reflowTime:0.252 source:map[column:22485 line:1 type:source-location url:https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js urlProvider:network]] map[reflowTime:0.36 source:map[column:22640 line:1 type:source-location url:https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js urlProvider:network]] map[reflowTime:0.308 source:map[column:22785 line:1 type:source-location url:https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js urlProvider:network]] map[reflowTime:0.253 source:map[column:41 line:778 type:source-location url:https://www.unam.mx/sites/default/files/js/js_dWhBODswdXXk1M5Z5nyqNfGljmqwxUwAK9i6D0YSDNs.js urlProvider:network]] map[reflowTime:13.293 source:map[column:75373 line:1 type:source-location url:https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js urlProvider:network]] map[reflowTime:1.892 source:map[column:76049 line:1 type:source-location url:https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js urlProvider:network]] map[reflowTime:0.131 source:map[column:3477 line:1 type:source-location url:https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js urlProvider:network]] map[reflowTime:0.254 source:map[column:75395 line:1 type:source-location url:https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js urlProvider:network]] map[reflowTime:1.411 source:map[column:77143 line:1 type:source-location url:https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js urlProvider:network]] map[reflowTime:0.661 source:map[column:8377 line:0 type:source-location url:https://www.unam.mx/cdn-cgi/challenge-platform/scripts/jsd/main.js urlProvider:network]] map[reflowTime:0.846 source:map[column:10449 line:7 type:source-location url:https://platform.twitter.com/widgets.js urlProvider:network]] map[reflowTime:0.115 source:map[column:55 line:821 type:source-location url:https://www.googletagmanager.com/gtag/js?id=G-R800EXT5K9&cx=c&_slc=1 urlProvider:network]] map[reflowTime:7.855 source:map[column:280 line:387 type:source-location url:https://www.google.com/cse/static/element/dc329f57de078f5d/cse_element__es.js?usqp=CAM%3D urlProvider:network]] map[reflowTime:1.254 source:map[column:168 line:313 type:source-location url:https://www.google.com/cse/static/element/dc329f57de078f5d/cse_element__es.js?usqp=CAM%3D urlProvider:network]] map[reflowTime:1.096 source:map[column:390 line:538 type:source-location url:https://www.google.com/cse/static/element/dc329f57de078f5d/cse_element__es.js?usqp=CAM%3D urlProvider:network]] map[reflowTime:1.439 source:map[column:1998 line:202 type:source-location url:https://connect.facebook.net/es_LA/bundle/sdk.js/ urlProvider:network]] map[reflowTime:0.653 source:map[column:46511 line:7 type:source-location url:https://platform.twitter.com/widgets.js urlProvider:network]]]

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLResource SizeEst Savings
475 aniversario de la Universidad de México div.owl-item > div > a > img
www.unam.mx/sites/default/files/images/carrusel/banneranimado-ok.gif1.3 MiB1.2 MiB
Nuestro video institucional, en varios idiomas: UNAM, Somos la Universidad de … div.views-field > div.field-content > a > img
www.unam.mx/sites/default/files/images/eventos/300.gif230.4 KiB129.4 KiB
Gaceta UNAM div.owl-item > div > a > img
/sites/default/files/images/carrusel/260420-portada-gacet...129.4 KiB111.9 KiB
Becas UNAM div.owl-item > div > a > img
/sites/default/files/images/carrusel/banner-1960x600-beca...127.7 KiB110.4 KiB
UNAM Global TV div.owl-item > div > a > img
www.unam.mx/sites/default/files/images/carrusel/500-historias-1960x600.jpg110.8 KiB95.9 KiB
8M, Día Internacional de las Mujeres div.owl-item > div > a > img
www.unam.mx/sites/default/files/images/carrusel/banner-8m-2026.jpg48.5 KiB42.0 KiB
Gobernar, labor compleja: Patricia Dolores Dávila Aranda div.views-field > div.field-content > a > img
www.unam.mx/sites/default/files/images/boletines/2341.jpg24.1 KiB21.5 KiB
Gonzalo Celorio, Premio Cervantes 2025, resguarda su legado en la Caja de las L… div.views-field > div.field-content > a > img
www.unam.mx/sites/default/files/images/boletines/2351.jpg18.1 KiB15.5 KiB
Lunes 20 de abril de 2026. El arte de gobernar (en tiempos de incertidumbre) de… div.views-field > div.field-content > a > img
/sites/default/files/images/gaceta/lunes_20_abril_2026_ga...25.5 KiB11.6 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-2-IMG
nodeLabel: Gaceta UNAM
path: 6,HTML,2,BODY,2,DIV,1,DIV,1,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,A,0,IMG
selector: div.owl-item > div > a > img
snippet: <img typeof="foaf:Image" src="https://www.unam.mx/sites/default/files/images/carrusel/260420-portada-gac…" width="1960" height="600" alt="Gaceta UNAM">

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.
title: Preconnected origins
description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.
title: Preconnect candidates

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
ajax.googleapis.com/ajax/libs/jqueryui/1.10.2/jquery-ui.min.js59.9 KiB450 ms
ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js32.9 KiB1.4 s
/sites/default/files/js/js_xVdESRffMtg-VD1YEgI9Mt1hde2nAM...6.7 KiB365 ms
/sites/default/files/js/js_o0NmOA6FrOQamIKXP181IN2QejpF72...1.1 KiB195 ms
/sites/default/files/js/js_SpbJAG1Bu1guk20fiA-z1XncJHF44B...3.8 KiB195 ms
/sites/default/files/js/js_dWhBODswdXXk1M5Z5nyqNfGljmqwxU...8.9 KiB873 ms
/sites/default/files/css/css_uc1RcvZeZUNveo7aHETNpsDro7gP...15.2 KiB1.0 s
/sites/default/files/css/css_JLCP4n47Z8AISwIm1s1TnuIbTc65...8.5 KiB704 ms
/sites/default/files/css/css_dWBHPbSQWh-19e3Bc29cTHIsefj-...2.6 KiB534 ms
/sites/default/files/css/css_Q7R7Blo9EYqLDI5rIlO_T3uTFBjI...2.9 KiB534 ms
/sites/default/files/css/css_lQaZfjVpwP_oGNqdtWCSpJT1EMqX...1.3 KiB195 ms

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
fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff210 ms
/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMawCUBHMdazT...5.0 ms

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

These are the largest layout shifts observed on the page. Each table item represents a single layout shift, and shows the element that shifted the most. Below each item are possible root causes that led to the layout shift. Some of these layout shifts may not be included in the CLS metric value due to windowing. Learn how to improve CLS

Why this matters

Performance issues directly impact user engagement and conversion rates.

ElementLayout shift score
Gaceta UNAM 8M, Día Internacional de las Mujeres 475 aniversario de la Universi… body.html > div#page > div#main
0.490
Gaceta UNAM 8M, Día Internacional de las Mujeres 475 aniversario de la Universi… body.html > div#page > div#main
0.038
21 ABR BOLETÍN UNAM-2026/235 Gonzalo Celorio, Premio Cervantes 2025, resguarda … div.inside > div.panels-flexible-region > div.inside > div#block-views-bloque-boletines-block
0.034

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: 170 ms 12.0 KiB
URLTransfer SizeEst Savings
/sites/default/files/js/js_rR1UpFcxYbve0531qs7TKMKfw50KNI...18.6 KiB6.1 KiB
/sites/default/files/js/js_dWhBODswdXXk1M5Z5nyqNfGljmqwxU...8.6 KiB5.9 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: 150 ms 21.9 KiB
URLTransfer SizeEst Savings
www.google.com/cse/static/element/dc329f57de078f5d/default_v6+es.css11.9 KiB11.5 KiB
/sites/default/files/css/css_uc1RcvZeZUNveo7aHETNpsDro7gP...14.9 KiB10.4 KiB

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 340 ms 278.4 KiB
URLTransfer SizeEst Savings
www.googletagmanager.com/gtag/js?id=G-R800EXT5K9&cx=c&_slc=1159.5 KiB66.8 KiB
/cse/static/element/dc329f57de078f5d/cse_element__es.js?u...102.9 KiB52.5 KiB
ajax.googleapis.com/ajax/libs/jqueryui/1.10.2/jquery-ui.min.js59.3 KiB51.9 KiB
connect.facebook.net/es_LA/bundle/sdk.js/77.7 KiB51.0 KiB
cse.google.com/adsense/search/async-ads.js43.3 KiB31.5 KiB
platform.twitter.com/widgets.js24.6 KiB24.5 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTotal CPU TimeScript EvaluationScript Parse
www.unam.mx/3.1 s115 ms8.0 ms
Unattributable1.2 s160 ms0.0 ms
ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js963 ms785 ms15 ms
www.unam.mx/cdn-cgi/challenge-platform/scripts/jsd/main.js527 ms504 ms4.4 ms
platform.twitter.com/widgets.js526 ms361 ms99 ms
www.googletagmanager.com/gtag/js?id=G-R800EXT5K9&cx=c&_slc=1432 ms294 ms135 ms
connect.facebook.net/es_LA/bundle/sdk.js/357 ms300 ms47 ms
cse.google.com/cse.js?cx=000862918480106004188:wi2hxgsc9de206 ms164 ms1.4 ms
www.google-analytics.com/analytics.js148 ms122 ms17 ms
ajax.googleapis.com/ajax/libs/jqueryui/1.10.2/jquery-ui.min.js116 ms62 ms40 ms
/cse/static/element/dc329f57de078f5d/cse_element__es.js?u...110 ms42 ms60 ms
cse.google.com/adsense/search/async-ads.js102 ms58 ms34 ms
/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312...97 ms62 ms17 ms
ep2.adtrafficquality.google/sodar/sodar2.js76 ms62 ms9.0 ms
/sites/default/files/js/js_rR1UpFcxYbve0531qs7TKMKfw50KNI...51 ms6.7 ms43 ms

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work

Why this matters

Performance issues directly impact user engagement and conversion rates.

CategoryTime Spent
Script Evaluation3.1 s
Other2.0 s
Rendering1.2 s
Style & Layout969 ms
Script Parsing & Compilation546 ms
Parse HTML & CSS130 ms
Garbage Collection103 ms

Minifying CSS files can reduce network payload sizes. Learn how to minify CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 3.3 KiB
URLTransfer SizeEst Savings
www.google.com/cse/static/element/dc329f57de078f5d/default_v6+es.css12.0 KiB3.3 KiB

Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer Size
www.unam.mx/sites/default/files/images/carrusel/banneranimado-ok.gif1.3 MiB
www.youtube.com/s/player/218d9d92/player_embed_es6.vflset/en_US/base.js435.8 KiB
www.unam.mx/sites/default/files/images/eventos/300.gif230.8 KiB
/s/_/ytembeds/_/js/k=ytembeds.base.en_US.CYE28xQTWxU.2021...193.1 KiB
www.googletagmanager.com/gtag/js?id=G-R800EXT5K9&cx=c&_slc=1159.9 KiB
/s/_/ytembeds/_/js/k=ytembeds.base.en_US.CYE28xQTWxU.2021...146.3 KiB
/sites/default/files/images/carrusel/260420-portada-gacet...129.8 KiB
/sites/default/files/images/carrusel/banner-1960x600-beca...128.1 KiB
www.unam.mx/sites/default/files/images/carrusel/500-historias-1960x600.jpg111.2 KiB
/widgets/widget_iframe.2f70fb173b9000da126c79afe2098f02.h...103.4 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
Inicio div#page > header#header > a#logo > img.header__logo-image
www.unam.mx/sites/all/themes/unam/logo.png
Facebook de la UNAM div#block-block-11 > p > a > img
www.unam.mx/sites/default/files/images/social/facebook.png
Canal de la UNAM en youtube div#block-block-11 > p > a > img
www.unam.mx/sites/default/files/images/social/youtube.png
Dudas y comentarios div#block-block-11 > p > a > img
www.unam.mx/sites/default/files/images/social/mail.png

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

●Document request latency
●Optimize DOM size
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●User Timing marks and measures 5 user timings
●Avoid long main-thread tasks 20 long tasks found
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 40 ms
●Server Backend Latencies 200 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Avoid multiple page redirects
●Initial server response time was short Root document took 210 ms
○INP breakdown
○Avoid non-composited animations
88

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.

Contrast

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
7 ABR 2026 div.views-row > div.views-field > div.field-content > span.date-display-single
7 ABR 2026 div.views-row > div.views-field > div.field-content > span.date-display-single
1 MAYO 2023 div.views-row > div.views-field > div.field-content > span.date-display-single
Eventos div.view > div.view-footer > p > a
Créditos div.region > div#block-bloque-legales-bloque-legales > p > a

These are opportunities to improve the legibility of your content.

Names and labels

Screen reader users rely on frame titles to describe the contents of frames. Learn more about frame titles.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.field-items > div.field-item > p > iframe div.field-items > div.field-item > p > iframe

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
body.html > div.mean-bar > a.meanmenu-reveal body.html > div.mean-bar > a.meanmenu-reveal

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
●Image elements have `[alt]` attributes
●Form elements have associated labels
●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
●ARIA attributes are used as specified for the element's role
●`[aria-hidden="true"]` elements do not contain focusable descendents
●Elements use only permitted ARIA attributes
●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
●All heading elements contain content.
●Identical links have the same purpose.
○`[accesskey]` values are unique
○`button`, `link`, and `menuitem` elements have accessible names
○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
○ARIA input fields have accessible names
○ARIA `meter` elements have accessible names
○ARIA `progressbar` elements have accessible names
○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
○`[role]`s are contained by their required parent element
○Elements with the `role=text` attribute do not have focusable descendents.
○ARIA toggle fields have accessible names
○ARIA `tooltip` elements have accessible names
○ARIA `treeitem` elements have accessible names
○Buttons have an accessible name
○The page contains a heading, skip link, or landmark region
○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
○Definition list items are wrapped in `<dl>` elements
○ARIA IDs are unique
○No form fields have multiple labels
○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
○Input buttons have discernible text.
○`<input type="image">` elements have `[alt]` text
○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>`.
○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.
81

Best Practices

General

Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / WarningSource
SharedStorage
www.unam.mx/cdn-cgi/challenge-platform/scripts/jsd/main.js
StorageType.persistent is deprecated. Please use standardized navigator.storage instead.
www.unam.mx/cdn-cgi/challenge-platform/scripts/jsd/main.js
Fledge
www.unam.mx/cdn-cgi/challenge-platform/scripts/jsd/main.js
●Uses HTTPS
●Avoids third-party cookies
●Allows users to paste into input fields
●Avoids requesting the geolocation permission on page load
●Avoids requesting the notification permission on page load
●Displays images with correct aspect ratio
●Serves images with appropriate resolution
●Page has the HTML doctype
●Properly defines charset
●No browser errors logged to the console
●No issues in the `Issues` panel in Chrome Devtools
●Ensure CSP is effective against XSS attacks
●Use a strong HSTS policy
●Ensure proper origin isolation with COOP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
●Page has valid source maps
○Redirects HTTP traffic to HTTPS
○Mitigate clickjacking with XFO or CSP
100

SEO

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

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

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