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Lighthouse Desktop

· 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.

80

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
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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:0.24269400000000002] map[node:map[boundingRect:map[bottom:1495 height:874 left:0 right:1350 top:621 width:1350] lhId:page-1-DIV nodeLabel:Destacados El Comité Europeo de Protección de Datos somete a consulta pública s… path:1,HTML,1,BODY,1,DIV,0,DIV,0,DIV,3,DIV,0,DIV,0,DIV,0,MAIN,0,SECTION,2,ARTICLE,1,DIV,2,DIV selector:section.section > article.node > div.node__content > div#layout-settings-721fd18f-4a6a-409f-a746-2f310b02480c snippet:<div id="layout-settings-721fd18f-4a6a-409f-a746-2f310b02480c" class="p-big layout-settings-wrapper"> type:node] score:0.182404] map[node:map[boundingRect:map[bottom:1495 height:874 left:0 right:1350 top:621 width:1350] lhId:page-1-DIV nodeLabel:Destacados El Comité Europeo de Protección de Datos somete a consulta pública s… path:1,HTML,1,BODY,1,DIV,0,DIV,0,DIV,3,DIV,0,DIV,0,DIV,0,MAIN,0,SECTION,2,ARTICLE,1,DIV,2,DIV selector:section.section > article.node > div.node__content > div#layout-settings-721fd18f-4a6a-409f-a746-2f310b02480c snippet:<div id="layout-settings-721fd18f-4a6a-409f-a746-2f310b02480c" class="p-big layout-settings-wrapper"> type:node] score:0.060289] map[score:1e-06 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:64 height:60 left:-1 right:262 top:4 width:263] lhId:page-79-IMG nodeLabel:Agencia Española de Proteccion de Datos path:1,HTML,1,BODY,1,DIV,0,DIV,0,DIV,0,HEADER,0,DIV,0,DIV,1,SECTION,0,H1,0,A,0,IMG selector:section.row > h1.container-logo > a.navbar-brand > img.img-fluid snippet:<img src="/sites/default/files/logo.svg" alt="Agencia Española de Proteccion de Datos" class="img-fluid d-inline-block align-top"> 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:74.591 source:map[column:119 line:3 type:source-location url:https://www.aepd.es/sites/default/files/js/optimized/js_KRjtvzl6UujB23-j_sF6dqOcbqg2z8ej98A8RU9bGsg.tf2uFMYvjWAlCUT5WXaeZQUNd2G33v-j5Wu3kx2WVYM.js?v=10.5.9 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:69.773 source:map[column:49615 line:2 type:source-location url:https://www.aepd.es/sites/default/files/js/optimized/js_dxIVcwvQ00owLGoUGPTfRYXU-T5rnj8Xi0cXfb3Kn58.V6UkxNRD06srEY1Hg9WFgYYqwdgg9W8JduloSkTKCO8.js?v=3.7.1 urlProvider:network]] map[reflowTime:1.574 source:map[column:50335 line:2 type:source-location url:https://www.aepd.es/sites/default/files/js/optimized/js_dxIVcwvQ00owLGoUGPTfRYXU-T5rnj8Xi0cXfb3Kn58.V6UkxNRD06srEY1Hg9WFgYYqwdgg9W8JduloSkTKCO8.js?v=3.7.1 urlProvider:network]] map[reflowTime:0.371 source:map[column:50393 line:2 type:source-location url:https://www.aepd.es/sites/default/files/js/optimized/js_dxIVcwvQ00owLGoUGPTfRYXU-T5rnj8Xi0cXfb3Kn58.V6UkxNRD06srEY1Hg9WFgYYqwdgg9W8JduloSkTKCO8.js?v=3.7.1 urlProvider:network]] map[reflowTime:0.334 source:map[column:50457 line:2 type:source-location url:https://www.aepd.es/sites/default/files/js/optimized/js_dxIVcwvQ00owLGoUGPTfRYXU-T5rnj8Xi0cXfb3Kn58.V6UkxNRD06srEY1Hg9WFgYYqwdgg9W8JduloSkTKCO8.js?v=3.7.1 urlProvider:network]] map[reflowTime:0.623 source:map[column:51395 line:2 type:source-location url:https://www.aepd.es/sites/default/files/js/optimized/js_dxIVcwvQ00owLGoUGPTfRYXU-T5rnj8Xi0cXfb3Kn58.V6UkxNRD06srEY1Hg9WFgYYqwdgg9W8JduloSkTKCO8.js?v=3.7.1 urlProvider:network]] map[reflowTime:5.259 source:map[column:49637 line:2 type:source-location url:https://www.aepd.es/sites/default/files/js/optimized/js_dxIVcwvQ00owLGoUGPTfRYXU-T5rnj8Xi0cXfb3Kn58.V6UkxNRD06srEY1Hg9WFgYYqwdgg9W8JduloSkTKCO8.js?v=3.7.1 urlProvider:network]]]

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-IMG
nodeLabel: plan-actuacion-2026
path: 1,HTML,1,BODY,1,DIV,0,DIV,0,DIV,3,DIV,0,DIV,0,DIV,0,MAIN,0,SECTION,2,ARTICLE,1,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,SECTION,0,DIV,0,DIV,0,DIV,1,DIV,0,ARTICLE,1,DIV,1,DIV,0,DIV,0,PICTURE,3,IMG
selector: div.blazy > div.media > picture > img#img-87577
snippet: <img class="media__image media__element b-lazy b-responsive b-loaded" decoding="async" loading="auto" width="410" height="300" src="https://www.aepd.es/sites/default/files/styles/slider_410x300/public/2026-…" alt="plan-actuacion-2026" id="img-87577">

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer SizeDuration
/sites/default/files/js/optimized/js_G8podNJjOsxKvo_RVe4-...1.2 KiB
/sites/default/files/js/optimized/js_ezwJb8QjKN82W11Y2wid...745 B
www.aepd.es/modules/custom/aepd_power_bi/js/powerbi_iframe_blocker.js?v=1.x2.4 KiB
/sites/default/files/js/optimized/js_Hpe5jrMuKXrV4HSTMApX...507 B
/sites/default/files/js/optimized/js_SuZ3njmnGTRU9js_EZaH...3.4 KiB
/sites/default/files/js/optimized/js_KRjtvzl6UujB23-j_sF6...570 B
/sites/default/files/js/optimized/js_mjv4qhOv2_1-EQeYpZwv...505 B
/sites/default/files/js/optimized/js_V1oRQ-kJlXBZaEklOtPU...1.8 KiB
/sites/default/files/js/optimized/js_w0iO3No0CsyHgJmryEbh...1013 B
/sites/default/files/css/optimized/css_BmLhRcaaqxHxDok9do...775 B
/sites/default/files/css/optimized/css_ONdoCA737sakJ8dLLD...740 B
/sites/default/files/css/optimized/css_-5Ql3jVz9QP2W9t5NW...984 B
/sites/default/files/css/optimized/css_x7dTuDt9dhzFze4xQJ...560 B
/sites/default/files/css/optimized/css_GYmf02NlTXbDmluEF1...1.1 KiB
/sites/default/files/css/optimized/css_qaIQMIAjtLzWzTq95Q...2.5 KiB
/sites/default/files/css/optimized/css_9PuLmJSLAVhlUovwXX...542 B
/sites/default/files/css/optimized/css_JEmmY2TuiHKKaulB5X...1.1 KiB
/sites/default/files/css/optimized/css_lJYH_Mnorjke7G5XzC...2.4 KiB
/sites/default/files/css/optimized/css_sjGRd-SYAX5_oAxlOf...2.1 KiB
/sites/default/files/css/optimized/css_SdjUXqdLNNdXkfyiuL...1.3 KiB
/sites/default/files/css/optimized/css_gPtE1BTgc-AhFsLAon...1.1 KiB
/sites/default/files/css/optimized/css_P1fVujVyFe2mZrrfyl...7.6 KiB
/sites/default/files/css/optimized/css_goyHDs22_Pb1YQEs5o...1.1 KiB
/sites/default/files/css/optimized/css_kJqax_RkZBAk2I3Nq_...2.6 KiB
/sites/default/files/css/optimized/css_GunQXtkQRKx-66tOCo...1.5 KiB
/sites/default/files/css/optimized/css_U05JTEwct10HgUsBej...1.8 KiB
/sites/default/files/css/optimized/css_FAHHyBdG1OBdEYED2V...1.0 KiB
/ajax/libs/bootstrap-datepicker/1.9.0/css/bootstrap-datep...2.7 KiB288 ms
/sites/default/files/css/optimized/css_tDK83lPhDdry0Sf2SH...1.2 KiB
/sites/default/files/css/optimized/css_Q4S_V_Z27cKvgh4eUO...772 B
/sites/default/files/css/optimized/css_n_P6ml4i0yi43mydnd...18.9 KiB
/sites/default/files/css/optimized/css_AR6nvP19UCbInJpLbg...1.2 KiB
/sites/default/files/css/optimized/css_77cfniCo7rCaSou5Z_...2.4 KiB
/sites/default/files/css/optimized/css_kRF9Pjk0rQm1GX3g81...714 B
/sites/default/files/css/optimized/css_y2vBbbaOKupKpSxOVT...635 B
/sites/default/files/css/optimized/css_zaONKoVbo0l69XbCwl...731 B
/sites/default/files/css/optimized/css_ahIdriqzcIJ3M1UewH...590 B
/sites/default/files/css/optimized/css_zHi3dbHiaBJpJ_yNQ9...383 B
/sites/default/files/css/optimized/css_8cmr6-UfrtfJ5MQg1L...414 B
/sites/default/files/css/optimized/css_Q7zLgQvyD3dkOHXnT2...453 B
/sites/default/files/css/optimized/css_xbzTOfiddJMMy916Iy...797 B
/sites/default/files/css/optimized/css_KMd_dJ2wCyIZdGv0dd...983 B
/sites/default/files/css/optimized/css_S0tdTX3-46eRL4mn2C...3.1 KiB
/sites/default/files/css/optimized/css_AbaeiYRn19HwODDMKv...704 B
/sites/default/files/css/optimized/css_0aXuvdFaMVxGKtiAwV...708 B
/sites/default/files/css/optimized/css_73nz4faxDJu-1n9bzB...519 B
/sites/default/files/css/optimized/css_PRpLCpZQr4zTfafBQv...465 B
/sites/default/files/css/optimized/css__7a65Qsn2GbI6R4HiS...435 B
/sites/default/files/css/optimized/css_JCU_zSqQm3rvBIXWev...547 B
/sites/default/files/css/optimized/css_41w6dBZ448pJSogyLg...567 B
/sites/default/files/css/optimized/css_Q6hS9heFRWwmGWvo9W...431 B
/sites/default/files/css/optimized/css_GbvmbJJu3etNuvRxzg...423 B
/sites/default/files/css/optimized/css_XYJeCymlgeYq2fA8gU...375 B
/sites/default/files/css/optimized/css_wcTRp4Ty5SGu4F6Mj_...369 B
/sites/default/files/css/optimized/css_7QllbjqoprdCwoIdo3...392 B
/sites/default/files/css/optimized/css_0jPT-BWLonFoD1a1XP...413 B
/sites/default/files/css/optimized/css__13fw7LchbE-h7zw4b...432 B
/sites/default/files/css/optimized/css_hnJTGN1fzih_ZZssV4...503 B
/sites/default/files/css/optimized/css_QF7anExUIQ9m7lRlQY...388 B
/sites/default/files/css/optimized/css_CYXnyo1qFoxHAoBBNs...415 B
/sites/default/files/css/optimized/css_gfUtLDXi72df47Aexu...382 B
/sites/default/files/css/optimized/css_xnDYBl4OD9snX7Sf9E...444 B
/sites/default/files/css/optimized/css_7S4hRTz8VD9y7Ta-sR...480 B
/sites/default/files/css/optimized/css_yIJuzHvo1e460jlmqt...656 B
/sites/default/files/css/optimized/css_Awu9YtmWu_taaaaJKs...583 B
/sites/default/files/css/optimized/css_wofQq75toB5xc4OLz0...857 B
/sites/default/files/css/optimized/css_97htjIvQ15V1EfeTAS...886 B
/sites/default/files/css/optimized/css_0HuQhCQk6T4uSkP7y3...788 B

Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLResource SizeEst Savings
div.content > div.field > div.field__item > img#img-70323 div.content > div.field > div.field__item > img#img-70323
/sites/default/files/styles/full_1440x440/public/2021-06/...374.3 KiB279.8 KiB
imagen-19-feb-26.png div.content > div.blazy > div.media > img#img-75100
/sites/default/files/styles/destacado/public/2026-02/imag...79.1 KiB72.7 KiB
Diálogs de privacidad - Lorenzo Cotino charla con Samuel Parra y María Luisa Go… div.content > div.blazy > div.media > img#img-86406
/sites/default/files/styles/destacado/public/2026-02/lore...78.8 KiB72.5 KiB
div.content > div.blazy > div.media > img#img-26258 div.content > div.blazy > div.media > img#img-26258
/sites/default/files/styles/destacado/public/2026-01/dial...74.1 KiB67.8 KiB
div.blazy > div.media > picture > img#img-75937 div.blazy > div.media > picture > img#img-75937
/sites/default/files/styles/slider_410x300/public/2026-03...80.9 KiB60.8 KiB
div.content > div.field > div.field__item > img#img-91275 div.content > div.field > div.field__item > img#img-91275
www.aepd.es/sites/default/files/2026-03/frame_s8.png115.5 KiB58.4 KiB
div.content > div.blazy > div.media > img#img-37017 div.content > div.blazy > div.media > img#img-37017
/sites/default/files/styles/destacado/public/2026-03/deep...63.1 KiB56.8 KiB
10-aniversario-rgpd div.content > div.blazy > div.media > img#img-99607
/sites/default/files/styles/destacado/public/2026-03/10-a...35.8 KiB29.5 KiB
Asesora Brecha div > div.field > div.field__item > img#img-54488
/sites/default/files/styles/large/public/2022-10/asesora-...12.3 KiB12.2 KiB
div.sc-dspCDH > div.sc-ZVgAE > figure.image > img.Media div.sc-dspCDH > div.sc-ZVgAE > figure.image > img.Media
/media.landbot.io/275199/channels/ZI694ZDBAP937CA10JBBLJ9...15.3 KiB11.7 KiB
div.content > div.blazy > div.media > img#img-71647 div.content > div.blazy > div.media > img#img-71647
/sites/default/files/styles/destacado/public/2026-01/herr...17.6 KiB11.3 KiB
div > div.field > div.field__item > img#img-32383 div > div.field > div.field__item > img#img-32383
/sites/default/files/styles/large/public/2025-06/criterio...9.2 KiB8.8 KiB
div.content > div.blazy > div.media > img#img-33994 div.content > div.blazy > div.media > img#img-33994
/sites/default/files/styles/destacado/public/2024-03/guil...13.2 KiB6.9 KiB
Logo AEPD div.content > div.blazy > div.media > img#img-35805
/sites/default/files/styles/destacado/public/2020-03/aepd...12.6 KiB6.3 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: 201 ms
URLTime Spent
aepd.es/201 ms
www.aepd.es/0.0 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

ElementLayout shift score
Destacados El Comité Europeo de Protección de Datos somete a consulta pública s… section.section > article.node > div.node__content > div#layout-settings-721fd18f-4a6a-409f-a746-2f310b02480c
0.182
Destacados El Comité Europeo de Protección de Datos somete a consulta pública s… section.section > article.node > div.node__content > div#layout-settings-721fd18f-4a6a-409f-a746-2f310b02480c
0.060
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

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: 0.0 ms 67.1 KiB
URLTransfer SizeEst Savings
cdn.landbot.io/landbot-3/landbot-3.0.css35.9 KiB35.7 KiB
/sites/default/files/css/optimized/css_n_P6ml4i0yi43mydnd...18.7 KiB17.9 KiB
@layer properties{@supports ((-webkit-hyphens:none) and (not (margin-trim:inline))) or ((-moz-orien…23.2 KiB13.5 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: 40 ms 450.3 KiB
URLTransfer SizeEst Savings
cdn.landbot.io/landbot-3/landbot-3.0.0.js652.5 KiB401.3 KiB
www.aepd.es/libraries/cookiesjsr/dist/cookiesjsr.min.js?v=1.0.13107.4 KiB49.0 KiB

Minifying JavaScript files can reduce payload sizes and script parse time. Learn how to minify JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 5.7 KiB
URLTransfer SizeEst Savings
/sites/default/files/js/optimized/js_nhVVv-gKMkJM1V_U6fvr...9.9 KiB5.7 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
Agencia Española de Proteccion de Datos section.row > h1.container-logo > a.navbar-brand > img.img-fluid
www.aepd.es/sites/default/files/logo.svg
ValidaCripto div > div.field > div.field__item > img#img-21082
www.aepd.es/sites/default/files/2023-10/validacripto.svg
Comunica-Brecha RGPD div > div.field > div.field__item > img#img-82321
www.aepd.es/sites/default/files/2020-10/brecha.svg
Facilita EMPRENDE icono div > div.field > div.field__item > img#img-88838
www.aepd.es/sites/default/files/2021-05/Group%203-1.svg
Registro DPD icono div > div.field > div.field__item > img#img-34108
www.aepd.es/sites/default/files/2021-05/Group%2019-2.svg
Gestiona EIPD icono div > div.field > div.field__item > img#img-91935
www.aepd.es/sites/default/files/2021-05/data-protection%20%281%29.svg
FACILITA RGPD icono div > div.field > div.field__item > img#img-65655
www.aepd.es/sites/default/files/2021-05/connection%20%281%29.svg
Canal del DPD icono div > div.field > div.field__item > img#img-94573
www.aepd.es/sites/default/files/2021-05/data-protection.svg
Notificación brecha de seguridad icono div > div.field > div.field__item > img#img-85327
www.aepd.es/sites/default/files/2021-05/Group%2019-1.svg
Preguntas Frecuentes icono div > div.field > div.field__item > img#img-75418
www.aepd.es/sites/default/files/2021-05/Group%2019.svg
Transparencia icono div > div.field > div.field__item > img#img-86456
www.aepd.es/sites/default/files/2021-05/Group%2040.svg
Conoce tus derechos icono div > div.field > div.field__item > img#img-55255
www.aepd.es/sites/default/files/2021-05/Group%2029.svg
Consultas previas icono div > div.field > div.field__item > img#img-98667
www.aepd.es/sites/default/files/2021-05/Group%2035.svg
Certificación DPD icono div > div.field > div.field__item > img#img-47458
www.aepd.es/sites/default/files/2021-05/Group%209.svg

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

●Optimize DOM size
●Font display
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●Avoids enormous network payloads Total size was 2,570 KiB
●JavaScript execution time 0.4 s
●Minimizes main-thread work 1.6 s
●Avoid long main-thread tasks 5 long tasks found
●Avoid non-composited animations 71 animated elements found
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 20 ms
●Server Backend Latencies 340 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 10 ms
○INP breakdown
○User Timing marks and measures
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.

ARIA

Each ARIA `role` supports a specific subset of `aria-*` attributes. Mismatching these invalidates the `aria-*` attributes. Learn how to match ARIA attributes to their roles.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
30 table.table-condensed > tbody > tr > td.old
31 table.table-condensed > tbody > tr > td.old
1 table.table-condensed > tbody > tr > td.disabled
2 table.table-condensed > tbody > tr > td.disabled
3 table.table-condensed > tbody > tr > td.disabled
4 table.table-condensed > tbody > tr > td.disabled
5 table.table-condensed > tbody > tr > td.disabled
6 table.table-condensed > tbody > tr > td.day
7 table.table-condensed > tbody > tr > td.day
8 table.table-condensed > tbody > tr > td.disabled
9 table.table-condensed > tbody > tr > td.day
10 table.table-condensed > tbody > tr > td.disabled
11 table.table-condensed > tbody > tr > td.disabled
12 table.table-condensed > tbody > tr > td.disabled
13 table.table-condensed > tbody > tr > td.day
14 table.table-condensed > tbody > tr > td.disabled
15 table.table-condensed > tbody > tr > td.disabled
16 table.table-condensed > tbody > tr > td.day
17 table.table-condensed > tbody > tr > td.day
18 table.table-condensed > tbody > tr > td.disabled
19 table.table-condensed > tbody > tr > td.disabled
20 table.table-condensed > tbody > tr > td.day
21 table.table-condensed > tbody > tr > td.day
22 table.table-condensed > tbody > tr > td.disabled
23 table.table-condensed > tbody > tr > td.disabled
24 table.table-condensed > tbody > tr > td.disabled
25 table.table-condensed > tbody > tr > td.disabled
26 table.table-condensed > tbody > tr > td.disabled
27 table.table-condensed > tbody > tr > td.disabled
28 table.table-condensed > tbody > tr > td.disabled
29 table.table-condensed > tbody > tr > td.disabled
30 table.table-condensed > tbody > tr > td.disabled
1 table.table-condensed > tbody > tr > td.new
2 table.table-condensed > tbody > tr > td.new
3 table.table-condensed > tbody > tr > td.new
4 table.table-condensed > tbody > tr > td.new
5 table.table-condensed > tbody > tr > td.new
6 table.table-condensed > tbody > tr > td.new
7 table.table-condensed > tbody > tr > td.new
8 table.table-condensed > tbody > tr > td.new
9 table.table-condensed > tbody > tr > td.new
10 table.table-condensed > tbody > tr > td.new

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Names and labels

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.content > div.field > div.field__item > img#img-70323 div.content > div.field > div.field__item > img#img-70323

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

Disabling zooming is problematic for users with low vision who rely on screen magnification to properly see the contents of a web page. Learn more about the viewport meta tag.

Why this matters

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

Source: MDN Permissions-Policy

Failing Elements
body.is-mobile > meta body.is-mobile > meta

These items highlight common accessibility best practices.

Visible text labels that do not match the accessible name can result in a confusing experience for screen reader users. Learn more about accessible names.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Ver más información div > div.view > div.more-link > a

Screen readers have features to make navigating tables easier. Ensuring that tables use the actual caption element instead of cells with the `[colspan]` attribute may improve the experience for screen reader users. Learn more about captions.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
<< Retroceder en el calendario Abril 2026 >> Avanzar en el calendario Lu M… div#datepicker-always-visible-home > div.datepicker > div.datepicker-days > table.table-condensed
○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-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
●Input buttons have discernible text.
●`button`, `link`, and `menuitem` elements have accessible names
●ARIA attributes are used as specified for the element's role
●Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
●`[aria-hidden="true"]` elements do not contain focusable descendents
●Elements use only permitted ARIA attributes
●Background and foreground colors have a sufficient contrast ratio
●Document has a `<title>` element
●`<frame>` or `<iframe>` elements have a title
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●Links are distinguishable without relying on color.
●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
●No element has a `[tabindex]` value greater than 0
●Touch targets have sufficient size and spacing.
●Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
●Heading elements appear in a sequentially-descending order
●Skip links are focusable.
●Document has a main landmark.
●Deprecated ARIA roles were not used
●`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
●`<td>` elements in a large `<table>` have one or more table headers.
○`[accesskey]` values are unique
○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
○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
○`<input type="image">` elements have `[alt]` text
○Form elements have associated labels
○The document does not use `<meta http-equiv="refresh">`
○`<object>` elements have alternate text
○Select elements have associated label elements.
○`[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.
○Identical links have the same purpose.
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 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
77

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.

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.aepd.es/canalprioritarioMÁS INFORMACIÓN

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.content > div.field > div.field__item > img#img-70323 div.content > div.field > div.field__item > img#img-70323

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 are crawlable
●robots.txt is valid
●Document has a valid `hreflang`
●Document has a valid `rel=canonical`

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