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

Audit breakdown by category with detailed findings.

74

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
moneres.upv.es/tv/videos-home/portada_alumnos_m.webm0.0 ms5.3 MiB
moneres.upv.es/tv/videos-home/portada_alumnos_e.webm0.0 ms5.1 MiB
www.upv.es/imagenes/pnoticias/upv-master-2023.jpg0.0 ms378.4 KiB
www.upv.es/imagenes/pnoticias/upv-te-apuntas-2023.jpg0.0 ms153.4 KiB
www.upv.es/imagenes/pnoticias/port_previa_foro_empleo_2026.jpg0.0 ms106.0 KiB
www.upv.es/imagenes/pnoticias/imgpreview-1.jpg0.0 ms91.4 KiB
www.upv.es/imagenes/upv-separador.jpg0.0 ms87.7 KiB
www.upv.es/imagenes/svg/logo-UPV-light.svg0.0 ms87.1 KiB
www.upv.es/imagenes/svg/logo-upv.svg0.0 ms85.5 KiB
/imagenes/pnoticias/exposicion-n1-universitat-politecnica...0.0 ms83.3 KiB
www.upv.es/imagenes/pnoticias/port_previa_honoris_chinesta_garmendia_2026.jpg0.0 ms72.9 KiB
www.upv.es/js/gsap.min.js0.0 ms70.1 KiB
www.upv.es/imagenes/pnoticias/investigacion-upv-elena-pinilla-top50-mujeres.jpg0.0 ms67.5 KiB
www.upv.es/imagenes/card-6.jpg0.0 ms66.2 KiB
www.upv.es/imagenes/card-3.jpg0.0 ms56.1 KiB
www.upv.es/css/main.min.css0.0 ms50.8 KiB
www.upv.es/imagenes/pnoticias/port_jpa_online_grados_latam_2026.jpg0.0 ms47.5 KiB
www.upv.es/imagenes/pnoticias/port_MUTSRC_2026.jpg0.0 ms45.6 KiB
www.upv.es/imagenes/card-1.jpg0.0 ms40.9 KiB
www.upv.es/js/ScrollTrigger.min.js0.0 ms40.7 KiB
www.upv.es/imagenes/card-4.jpg0.0 ms39.0 KiB
www.upv.es/imagenes/card-2.jpg0.0 ms38.8 KiB
www.upv.es/imagenes/card-5.jpg0.0 ms37.1 KiB
www.upv.es/js/Draggable.min.js0.0 ms34.9 KiB
www.upv.es/imagenes/svg/logo-xarxa.svg0.0 ms27.5 KiB
www.upv.es/imagenes/svg/sello_aneca.svg0.0 ms20.4 KiB
www.upv.es/js/cookies.js0.0 ms16.5 KiB
www.upv.es/fonts/upv/font/upv.woff2?944291200.0 ms15.8 KiB
www.upv.es/js/carousel.js0.0 ms7.0 KiB
www.upv.es/fonts/upv/css/upv.css0.0 ms6.9 KiB
www.upv.es/imagenes/svg/logo-emas.svg0.0 ms6.8 KiB
www.upv.es/js/main.js0.0 ms5.8 KiB
www.upv.es/imagenes/svg/logo-universia.svg0.0 ms4.7 KiB
www.upv.es/imagenes/poli-consulta-negativo.png0.0 ms3.5 KiB
www.upv.es/imagenes/poli-consulta-blanco.png0.0 ms3.2 KiB
www.upv.es/imagenes/svg/enhance-logo.svg0.0 ms3.1 KiB
www.upv.es/imagenes/poli-sqf-negativo.png0.0 ms2.6 KiB
www.upv.es/imagenes/svg/logo-h4s4r.svg0.0 ms1.8 KiB
www.upv.es/imagenes/upv-letters.svg0.0 ms1.4 KiB
www.upv.es/js/accordion.js0.0 ms1.0 KiB

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:0.293128] map[node:map[boundingRect:map[bottom:2055 height:1358 left:0 right:1350 top:697 width:1350] lhId:page-12-SECTION nodeLabel:Phase 1. Aimed at all Spanish and foreign students Pre-registration for master… path:1,HTML,1,BODY,1,DIV,0,MAIN,1,SECTION selector:body > div#smooth-wrapper > main > section snippet:<section style="overflow: hidden; padding-top: 2.5rem"> type:node] score:0.264092 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:2469 height:415 left:0 right:1350 top:2055 width:1350] lhId:page-3-IMG nodeLabel:Estudiantes conversan en un campus de la UPV path:1,HTML,1,BODY,1,DIV,0,MAIN,2,SECTION,1,IMG selector:div#smooth-wrapper > main > section.no-padding > img.w-100 snippet:<img src="/imagenes/upv-separador.jpg" alt="Estudiantes conversan en un campus de la UPV" class="w-100"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:391 height:64 left:75 right:1275 top:327 width:1200] lhId:page-7-H1 nodeLabel:Up to 900€ per student path:1,HTML,1,BODY,1,DIV,0,MAIN,0,DIV,3,DIV,0,H1 selector:main > div > div.text-over-video > h1 snippet:<h1> type:node] score:0.029036 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:2469 height:415 left:0 right:1350 top:2055 width:1350] lhId:page-3-IMG nodeLabel:Estudiantes conversan en un campus de la UPV path:1,HTML,1,BODY,1,DIV,0,MAIN,2,SECTION,1,IMG selector:div#smooth-wrapper > main > section.no-padding > img.w-100 snippet:<img src="/imagenes/upv-separador.jpg" alt="Estudiantes conversan en un campus de la UPV" class="w-100"> type:node]] map[cause:Web font extra:map[type:url value:https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa1ZL7W0Q5nw.woff2]] map[cause:Web font extra:map[type:url value:https://fonts.gstatic.com/s/poppins/v24/pxiByp8kv8JHgFVrLCz7Z1xlFd2JQEk.woff2]]] 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:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:1.261 source:map[column:31811 line:9 type:source-location url:https://www.upv.es/js/ScrollTrigger.min.js urlProvider:network]] map[reflowTime:36.373 source:map[column:51 line:96 type:source-location url:https://www.upv.es/ 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
Admission to master's degree div.container > div.grid > div.col-7 > img.w-100
www.upv.es/imagenes/pnoticias/upv-master-2023.jpg378.1 KiB307.4 KiB
Are you in? div.container > div.grid > div.col-7 > img.w-100
www.upv.es/imagenes/pnoticias/upv-te-apuntas-2023.jpg153.0 KiB82.3 KiB
Don't just look for a job - find one Over 225 companies are looking for talent… div.container > div > div > div
www.upv.es/imagenes/pnoticias/port_previa_foro_empleo_2026.jpg105.6 KiB50.2 KiB
Estudiantes conversan en un campus de la UPV div#smooth-wrapper > main > section.no-padding > img.w-100
www.upv.es/imagenes/upv-separador.jpg87.4 KiB44.2 KiB
Phase 1. Aimed at all Spanish and foreign students Pre-registration for master… div.container > div > div > div.red-new
www.upv.es/imagenes/pnoticias/imgpreview-1.jpg91.0 KiB35.6 KiB
Live-streamed The Universitat Politècnica de València will confer honorary doc… div.container > div > div > div
www.upv.es/imagenes/pnoticias/port_previa_honoris_chinesta_garmendia_2026.jpg72.6 KiB17.2 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-6-VIDEO
nodeLabel: div#smooth-wrapper > main > div > video.no-mobile
path: 1,HTML,1,BODY,1,DIV,0,MAIN,0,DIV,0,VIDEO
selector: div#smooth-wrapper > main > div > video.no-mobile
snippet: <video width="100%" autoplay="" muted="" loop="" playsinline="" class="no-mobile">

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer SizeDuration
/css2?family=Inter:wght@400;700&family=Poppins:wght@700&d...1.2 KiB267 ms
www.upv.es/js/Draggable.min.js34.9 KiB294 ms
www.upv.es/js/gsap.min.js70.1 KiB375 ms
www.upv.es/js/ScrollTrigger.min.js40.7 KiB294 ms
www.upv.es/css/main.min.css50.8 KiB253 ms
www.upv.es/fonts/upv/css/upv.css6.9 KiB130 ms

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
www.upv.es/fonts/upv/font/upv.woff2?9442912010 ms

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.upv.es/http/1.1
www.upv.es/css/main.min.csshttp/1.1
www.upv.es/js/cookies.jshttp/1.1
www.upv.es/js/gsap.min.jshttp/1.1
www.upv.es/js/ScrollTrigger.min.jshttp/1.1
www.upv.es/js/main.jshttp/1.1
www.upv.es/js/Draggable.min.jshttp/1.1
www.upv.es/js/carousel.jshttp/1.1
www.upv.es/js/accordion.jshttp/1.1
www.upv.es/fonts/upv/css/upv.csshttp/1.1
www.upv.es/imagenes/svg/logo-upv.svghttp/1.1
www.upv.es/imagenes/upv-separador.jpghttp/1.1
www.upv.es/imagenes/pnoticias/upv-master-2023.jpghttp/1.1
www.upv.es/imagenes/pnoticias/upv-te-apuntas-2023.jpghttp/1.1
www.upv.es/imagenes/upv-letters.svghttp/1.1
www.upv.es/imagenes/card-1.jpghttp/1.1
www.upv.es/imagenes/card-2.jpghttp/1.1
www.upv.es/imagenes/card-3.jpghttp/1.1
www.upv.es/imagenes/card-4.jpghttp/1.1
www.upv.es/imagenes/card-5.jpghttp/1.1
www.upv.es/imagenes/card-6.jpghttp/1.1
www.upv.es/imagenes/pnoticias/investigacion-upv-elena-pinilla-top50-mujeres.jpghttp/1.1
www.upv.es/imagenes/poli-consulta-blanco.pnghttp/1.1
www.upv.es/imagenes/poli-sqf-negativo.pnghttp/1.1
www.upv.es/imagenes/poli-consulta-negativo.pnghttp/1.1
www.upv.es/imagenes/svg/logo-UPV-light.svghttp/1.1
www.upv.es/imagenes/svg/logo-h4s4r.svghttp/1.1
www.upv.es/imagenes/svg/logo-emas.svghttp/1.1
www.upv.es/imagenes/svg/enhance-logo.svghttp/1.1
www.upv.es/imagenes/svg/sello_aneca.svghttp/1.1
www.upv.es/imagenes/svg/logo-xarxa.svghttp/1.1
www.upv.es/imagenes/svg/logo-universia.svghttp/1.1
www.upv.es/imagenes/pnoticias/imgpreview-1.jpghttp/1.1
www.upv.es/imagenes/pnoticias/port_MUTSRC_2026.jpghttp/1.1
www.upv.es/imagenes/pnoticias/port_jpa_online_grados_latam_2026.jpghttp/1.1
www.upv.es/imagenes/pnoticias/port_previa_honoris_chinesta_garmendia_2026.jpghttp/1.1
www.upv.es/imagenes/pnoticias/port_previa_foro_empleo_2026.jpghttp/1.1
/imagenes/pnoticias/exposicion-n1-universitat-politecnica...http/1.1
www.upv.es/fonts/upv/font/upv.woff2?94429120http/1.1
www.upv.es/favicon.icohttp/1.1

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

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: 40 ms 4.9 KiB
URLTransfer SizeEst Savings
www.upv.es/js/cookies.js16.1 KiB2.6 KiB
www.upv.es/js/carousel.js6.7 KiB2.3 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: 90 ms 70.3 KiB
URLTransfer SizeEst Savings
www.upv.es/js/gsap.min.js69.7 KiB29.2 KiB
www.upv.es/js/ScrollTrigger.min.js40.4 KiB21.1 KiB
www.upv.es/js/Draggable.min.js34.6 KiB20.1 KiB

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 2.5 KiB
URLTransfer SizeEst Savings
www.upv.es/fonts/upv/css/upv.css6.9 KiB2.5 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: 20 ms 33.6 KiB
URLTransfer SizeEst Savings
www.upv.es/css/main.min.css50.5 KiB33.6 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
moneres.upv.es/tv/videos-home/portada_alumnos_m.webm5.3 MiB
moneres.upv.es/tv/videos-home/portada_alumnos_e.webm5.1 MiB
www.upv.es/imagenes/pnoticias/upv-master-2023.jpg378.4 KiB
www.upv.es/imagenes/pnoticias/upv-te-apuntas-2023.jpg153.4 KiB
www.upv.es/115.3 KiB
www.upv.es/imagenes/pnoticias/port_previa_foro_empleo_2026.jpg106.0 KiB
www.upv.es/imagenes/pnoticias/imgpreview-1.jpg91.4 KiB
www.upv.es/imagenes/upv-separador.jpg87.7 KiB
www.upv.es/imagenes/svg/logo-UPV-light.svg87.1 KiB
www.upv.es/imagenes/svg/logo-upv.svg85.5 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
Estudiantes conversan en un campus de la UPV div#smooth-wrapper > main > section.no-padding > img.w-100
www.upv.es/imagenes/upv-separador.jpg
Research structures div.col-7 > div.upv-carousel > div.slider-content > img.w-100
www.upv.es/imagenes/pnoticias/investigacion-upv-elena-pinilla-top50-mujeres.jpg
Admission to master's degree div.container > div.grid > div.col-7 > img.w-100
www.upv.es/imagenes/pnoticias/upv-master-2023.jpg
Are you in? div.container > div.grid > div.col-7 > img.w-100
www.upv.es/imagenes/pnoticias/upv-te-apuntas-2023.jpg
main > section#value > div.no-mobile-fix > img.scroll-animation-to-top main > section#value > div.no-mobile-fix > img.scroll-animation-to-top
www.upv.es/imagenes/upv-letters.svg
The image that illustrates block of bachelor’s degrees div.upv-carousel > div.slider-content > div.over-card-text-position > img
www.upv.es/imagenes/card-1.jpg
The image that illustrates block of double bachelor’s degrees div.upv-carousel > div.slider-content > div.over-card-text-position > img
www.upv.es/imagenes/card-2.jpg
The image that illustrates block of double international degrees div.upv-carousel > div.slider-content > div.over-card-text-position > img
www.upv.es/imagenes/card-3.jpg
The image that illustrates block of master‘s degrees div.upv-carousel > div.slider-content > div.over-card-text-position > img
www.upv.es/imagenes/card-4.jpg
The image that illustrates block of doctorate studies div.upv-carousel > div.slider-content > div.over-card-text-position > img
www.upv.es/imagenes/card-5.jpg
The image that illustrates this block of information div.upv-carousel > div.slider-content > div.over-card-text-position > img
www.upv.es/imagenes/card-6.jpg
footer.bg-black > div.flex > a.ml-2 > img footer.bg-black > div.flex > a.ml-2 > img
www.upv.es/imagenes/svg/sello_aneca.svg
footer.bg-black > div.container > div.text-center > img footer.bg-black > div.container > div.text-center > img
www.upv.es/imagenes/svg/logo-UPV-light.svg
Logo UPV div.menu > div.grid > a > img.upv-logo
www.upv.es/imagenes/svg/logo-upv.svg
footer.bg-black > div.flex > a > img footer.bg-black > div.flex > a > img
www.upv.es/imagenes/svg/enhance-logo.svg
footer.bg-black > div.flex > a.ml-2 > img footer.bg-black > div.flex > a.ml-2 > img
www.upv.es/imagenes/svg/logo-emas.svg
div.container > div > a > img div.container > div > a > img
www.upv.es/imagenes/svg/logo-xarxa.svg
div.container > div > a.ml-2 > img div.container > div > a.ml-2 > img
www.upv.es/imagenes/svg/logo-universia.svg
Website to communicate with UPV div.poli-links > div > div > img
www.upv.es/imagenes/poli-consulta-negativo.png
Website to communicate with UPV div#smooth-wrapper > main > a.poli-consulta-btn > img
www.upv.es/imagenes/poli-consulta-blanco.png
Website to communicate with UPV div.poli-links > div > div > img
www.upv.es/imagenes/poli-sqf-negativo.png
footer.bg-black > div.flex > a > img footer.bg-black > div.flex > a > img
www.upv.es/imagenes/svg/logo-h4s4r.svg

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

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
Phase 1. Aimed at all Spanish and foreign students Pre-registration for master… body > div#smooth-wrapper > main > section
0.264
Up to 900€ per student main > div > div.text-over-video > h1
0.029
●Time to Interactive 2.1 s
●Optimize DOM size
●LCP breakdown
●Optimize viewport for mobile
●Max Potential First Input Delay 20 ms
●JavaScript execution time 0.0 s
●Minimizes main-thread work 0.5 s
●Avoid non-composited animations 1 animated element found
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 20 ms
●Server Backend Latencies 30 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 10 ms
○INP breakdown
○User Timing marks and measures
○Avoid long main-thread tasks
90

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
Cookie policy body > div.cookie-box > p > a
ACCEPT body > div.cookie-box > div.buttons > button#save-button
REJECT body > div.cookie-box > div.buttons > button#cancel-button

These are opportunities to improve the legibility of your content.

Navigation

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Pre-registration for master's degrees div.red-new > div.flex > div > h3

These are opportunities to improve keyboard navigation in your application.

Names and labels

Labels ensure that form controls are announced properly by assistive technologies, like screen readers. Learn more about form element labels.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.cookies-checks > div#essential > div > input#essential-input div.cookies-checks > div#essential > div > input#essential-input
div.cookies-checks > div#preferences > div > input#preferences-input div.cookies-checks > div#preferences > div > input#preferences-input
div.cookies-checks > div#analytics > div > input#analytics-input div.cookies-checks > div#analytics > div > input#analytics-input

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
●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
●`[role]` values are valid
●`[aria-*]` attributes have valid values
●`[aria-*]` attributes are valid and not misspelled
●Buttons have an accessible name
●Image elements have `[alt]` attributes
●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
●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
●Links are distinguishable without relying on color.
●Links have a discernible name
●Touch targets have sufficient size and spacing.
●Document has a main landmark.
●Deprecated ARIA roles were not used
●`<video>` elements contain a `<track>` element with `[kind="captions"]`
●Identical links have the same purpose.
○`[accesskey]` values are unique
○`button`, `link`, and `menuitem` elements have accessible names
○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
○ARIA input fields have accessible names
○ARIA `meter` elements have accessible names
○ARIA `progressbar` elements have accessible names
○Elements with the `role=text` attribute do not have focusable descendents.
○ARIA toggle fields have accessible names
○ARIA `tooltip` elements have accessible names
○ARIA `treeitem` elements have accessible names
○The page contains a heading, skip link, or landmark region
○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
○Definition list items are wrapped in `<dl>` elements
○ARIA IDs are unique
○No form fields have multiple labels
○`<frame>` or `<iframe>` elements have a title
○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
○Input buttons have discernible text.
○`<input type="image">` elements have `[alt]` text
○Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
○List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
○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
○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.
100

Best Practices

●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
●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 clickjacking with XFO or CSP
●Mitigate DOM-based XSS with Trusted Types
●Page has valid source maps
○Redirects HTTP traffic to HTTPS
○Detected JavaScript libraries
92

SEO

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

Content Best Practices

Descriptive link text helps search engines understand your content. Learn how to make links more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Link destinationLink Text
www.upv.es/noticias-upv/noticia-15764-excellence-eng-en.htmlRead more
www.upv.es/noticias-upv/noticia-15749-charla-online-en.htmlRead more
www.upv.es/noticias-upv/noticia-15761-nuevos-doctore-en.htmlREAD MORE
www.upv.es/noticias-upv/noticia-15755-no-busques-emp-en.htmlRead more
www.upv.es/estudios/grado/grados-ramas-en.htmlMore information
www.upv.es/estudios/grado/grados-dobles-en.htmlMore information
www.upv.es/estudios/grado/dobles-tit-internacionales-en.htmlMore information
www.upv.es/estudios/posgrado/masteres-por-ramas-en.htmlMore information
www.upv.es/entidades/EDOCTORADO/info/1007774normali.htmlMore information
www.cfp.upv.es/formacion-permanente/masters/masters.html?idioma=es&menuupv=trueMore information
www.upv.es/contenidos/SIEPRACT/More information
www.upv.es/contenidos/SIEEMPLE/More information
www.servipoli.es/More information
www.upv.es/entidades/SIE/index-en.htmlMore information
www.upv.es/noticias-upv/noticia-15728-elena-pinilla-en.htmlRead more
www.upv.es/noticias-upv/noticia-15730-un-nuevo-bioma-en.htmlRead more
www.upv.es/noticias-upv/noticia-15726-la-dana-intens-en.htmlRead more

Format your HTML in a way that enables crawlers to better understand your app’s content.

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

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