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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.

49

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
/signals/config/1246353057568670?v=2.9.298&r=stable&domai...1200.0 s126.9 KiB
assets.adobedtm.com/062a88abff57/46c664a2bb51/launch-c03de8dbe9b7.min.js3600.0 s120.3 KiB
connect.facebook.net/en_US/fbevents.js1200.0 s96.4 KiB
c.amazon-adsystem.com/aax2/apstag.js3600.0 s90.9 KiB
sdk.mrf.io/statics/marfeel-sdk.js?id=20581800.0 s59.1 KiB
service.wemass.com/dmp/d94422aa8614fd4bf4e0cafd66f9c097.js180.0 s34.9 KiB
/54be359e-8720-4316-b789-ade04aa9f9cd/loader.js?target=ww...7200.0 s41.2 KiB
static.vocstatic.com/vam/7.18.0/prebid.js604800.0 s125.1 KiB
static.vocstatic.com/voonto2/latest/voonto.js86400.0 s21.0 KiB
static.vocstatic.com/user-identity/1.71.1/user-identity-framework.js604800.0 s69.9 KiB
static.vocstatic.com/vam/7.18.0/vam.js604800.0 s42.4 KiB
static.vocstatic.com/tag-manager/latest/vtm.js86400.0 s10.1 KiB
static.vocstatic.com/voc26/latest/assets/fonts/mcs.woff2604800.0 s38.6 KiB
static.vocstatic.com/voc26/latest/assets/fonts/mcr.woff2604800.0 s37.2 KiB
sdk.mrf.io/statics/compass-multimedia-sdk.js?version=22583600.0 s4.3 KiB
static.vocstatic.com/voc26/1.0.46/voc26-home.css604800.0 s30.7 KiB
es-config.sensic.net/s2s-web.js1209600.0 s31.0 KiB
static.vocstatic.com/widgets/4.35.0/ev-em.min.js604800.0 s28.8 KiB
static.vocstatic.com/voc26/latest/assets/fonts/axs.woff2604800.0 s28.2 KiB
static.vocstatic.com/voc26/latest/assets/fonts/ads.woff2604800.0 s24.7 KiB
static.vocstatic.com/voc26/latest/assets/fonts/adl.woff2604800.0 s24.0 KiB
/062a88abff57/46c664a2bb51/01d9642264e1/RC6d460359592d407...3600.0 s3.0 KiB
static.vocstatic.com/voc26/latest/assets/fonts/atl.woff2604800.0 s23.2 KiB
static.vocstatic.com/widgets/4.35.0/loader.js604800.0 s19.2 KiB
/062a88abff57/46c664a2bb51/01d9642264e1/RC98ac3dc73d964f5...3600.0 s2.2 KiB
/062a88abff57/46c664a2bb51/01d9642264e1/RC3b9b2b754fe94f7...3600.0 s2.0 KiB
static.vocstatic.com/widgets/4.35.0/accessctrl.js604800.0 s12.8 KiB
/062a88abff57/46c664a2bb51/01d9642264e1/RC97c4717d25ed477...3600.0 s1.6 KiB
/062a88abff57/46c664a2bb51/01d9642264e1/RCbdd29dadae934c8...3600.0 s1.5 KiB
static.vocstatic.com/widgets/4.35.0/rtim.js604800.0 s11.6 KiB
static.vocstatic.com/portalsjs/2.8.1/portals.js604800.0 s11.0 KiB
/062a88abff57/46c664a2bb51/01d9642264e1/RCc75907c1a8254b5...3600.0 s1.2 KiB
/062a88abff57/46c664a2bb51/01d9642264e1/RCbf15496093304f4...3600.0 s1.1 KiB
/062a88abff57/46c664a2bb51/01d9642264e1/RC8bf42caa53c04aa...3600.0 s1.0 KiB
/062a88abff57/46c664a2bb51/01d9642264e1/RCbe6651486dfa492...3600.0 s1011 B
/062a88abff57/46c664a2bb51/01d9642264e1/RCf8c2cccfb63d468...3600.0 s992 B
static.vocstatic.com/video-player/2.4.0/video-player.js604800.0 s6.7 KiB
static.vocstatic.com/voc26/1.0.46/dom-ready.js604800.0 s6.6 KiB
/062a88abff57/46c664a2bb51/01d9642264e1/RC0798c660782e47e...3600.0 s832 B
/062a88abff57/46c664a2bb51/01d9642264e1/RCc2b8e4b8a487499...3600.0 s826 B
/062a88abff57/46c664a2bb51/01d9642264e1/RCfc1d34f76f214f5...3600.0 s807 B
/062a88abff57/46c664a2bb51/01d9642264e1/RCc9e9bc05fdc846a...3600.0 s803 B
/062a88abff57/46c664a2bb51/01d9642264e1/RC91f321fa8f79484...3600.0 s802 B
/062a88abff57/46c664a2bb51/01d9642264e1/RC7e16fcb2ad6c4bf...3600.0 s797 B
/062a88abff57/46c664a2bb51/01d9642264e1/RC77b28969ef864c8...3600.0 s788 B
/062a88abff57/46c664a2bb51/01d9642264e1/RCc594cf4e21ed4ab...3600.0 s773 B
/062a88abff57/46c664a2bb51/01d9642264e1/RC7c12e02fa3964b8...3600.0 s696 B
/062a88abff57/46c664a2bb51/01d9642264e1/RC7384fdcfd6d74bf...3600.0 s691 B
/062a88abff57/46c664a2bb51/01d9642264e1/RC7536b7ffb5be48e...3600.0 s685 B
/062a88abff57/46c664a2bb51/01d9642264e1/RC407298c5d763426...3600.0 s680 B
/062a88abff57/46c664a2bb51/01d9642264e1/RCb08cdd109820427...3600.0 s675 B
/062a88abff57/46c664a2bb51/01d9642264e1/RCb0e9747aa53644d...3600.0 s672 B
static.vocstatic.com/widgets/4.35.0/3.js604800.0 s4.5 KiB
static.vocstatic.com/portalsjs/2.8.1/progressive.js604800.0 s4.2 KiB
static.vocstatic.com/portalsjs/2.8.1/nibara-layout-indigitalLoaded.js604800.0 s3.4 KiB
static.vocstatic.com/portalsjs/2.8.1/nibara-home-script.js604800.0 s3.1 KiB
static.vocstatic.com/voc26/1.0.46/click.js604800.0 s2.5 KiB
static.vocstatic.com/voc26/1.0.46/voc26.js604800.0 s2.5 KiB
static.vocstatic.com/portalsjs/2.8.1/chunk-group-main.js604800.0 s2.4 KiB
static.vocstatic.com/portalsjs/2.8.1/sticky-ads.js604800.0 s2.3 KiB
static.vocstatic.com/portalsjs/2.8.1/edition-change.js604800.0 s1.9 KiB
static1.vocstatic.com/voc26/latest/assets/images/logos/logo-abc.svg604800.0 s1.5 KiB
static.vocstatic.com/user-identity/1.71.1/identity-general-loader.js604800.0 s1.1 KiB
static.vocstatic.com/portalsjs/2.8.1/nibara-layout-lazyload.js604800.0 s923 B
static.vocstatic.com/tag-manager/3.14.3/wemass.js604800.0 s845 B
static.vocstatic.com/portalsjs/2.8.1/nibara-comun-vocuser-data.js604800.0 s830 B
static.vocstatic.com/portalsjs/2.8.1/video-player-img-default.js604800.0 s736 B
static.vocstatic.com/voc26/1.0.46/inview.js604800.0 s719 B
s1.abcstatics.com/abc/www/multimedia/plantillas/icon-newsletter.svg604800.0 s718 B
static.vocstatic.com/portalsjs/2.8.1/video-player-widget.js604800.0 s662 B

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
Alcaraz se baja del Godó por lesión figure.v-a-fig > a.v-a-lnk > picture > img.v-a-img
/abc/www/multimedia/deportes/2026/04/15/1510116086-kjgG--...65.9 KiB30.2 KiB
Mbappé, protestando a Vincic por la roja a Camavinga figure.v-a-fig > a.v-a-lnk > picture > img.v-a-img
/abc/www/multimedia/deportes/2026/04/15/vincic-U368170267...49.1 KiB20.4 KiB
Los investigadores no han conseguido detectar la causa del fenómeno figure.v-a-fig > a.v-a-lnk > picture > img.v-a-img
/abc/www/multimedia/tecnologia/2026/04/15/1483125077-U107...18.5 KiB6.8 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-3-IMG
nodeLabel: Isabel Pardo de Vera, a su llegada al Tribunal Supremo para declarar como testi…
path: 1,HTML,1,BODY,11,DIV,0,DIV,0,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,ARTICLE,0,DIV,0,FIGURE,0,A,0,PICTURE,2,IMG
selector: figure.v-a-fig > a.v-a-lnk > picture > img.v-a-img
snippet: <img src="https://s1.abcstatics.com/abc/www/multimedia/espana/2026/04/15/IsabelPardo…" class="v-a-img " alt="Isabel Pardo de Vera, a su llegada al Tribunal Supremo para declarar como …" width="562" height="315">

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.

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.

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: 754 ms
URLTime Spent
abc.es/754 ms
www.abc.es/0.0 ms

Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Diagnostics

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 40.7 KiB
URLTransfer SizeEst Savings
static.vocstatic.com/voc26/1.0.46/voc26-home.css30.6 KiB25.9 KiB
16.6 KiB14.9 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.

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 Evaluation3.2 s
Other1.2 s
Style & Layout703 ms
Script Parsing & Compilation504 ms
Rendering224 ms
Garbage Collection101 ms
Parse HTML & CSS76 ms

Many navigations are performed by going back to a previous page, or forwards again. The back/forward cache (bfcache) can speed up these return navigations. Learn more about the bfcache

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reasonFailure type
Pages with cache-control:no-store header cannot enter back/forward cache.Actionable
Pages whose main resource has cache-control:no-store cannot enter back/forward cache.Not actionable
Back/forward cache is disabled because some JavaScript network request received resource with Cache-Control: no-store header.Not actionable

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

Layout shift culprits
Optimize DOM size
Font display
Forced reflow
LCP breakdown
Modern HTTP
Optimize viewport for mobile
Minify CSS
Minify JavaScript
Avoids enormous network payloads Total size was 2,192 KiB
User Timing marks and measures 9 user timings
Avoid long main-thread tasks 20 long tasks found
Image elements have explicit `width` and `height`
Network Requests
Network Round Trip Times 70 ms
Server Backend Latencies 110 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Initial server response time was short Root document took 0 ms
Avoid large layout shifts 1 layout shift found
INP breakdown
Avoid non-composited animations
73

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

Assistive technologies, like screen readers, can't interpret ARIA attributes with invalid values. Learn more about valid values for ARIA attributes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.v-h__c > div.v-h__g > div.v-h__w > button.v-hmb div.v-h__c > div.v-h__g > div.v-h__w > button.v-hmb

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

When a button doesn't have an accessible name, screen readers announce it as "button", making it unusable for users who rely on screen readers. Learn how to make buttons more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.v-h__c > div.v-h__g > div.v-h__w > button.v-hmb div.v-h__c > div.v-h__g > div.v-h__w > button.v-hmb
body.didomi-popup-open > div.v-adv > button.v-x body.didomi-popup-open > div.v-adv > button.v-x

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.

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
EN DIRECTO div.v-tck > div.v-tck__c > span.v-plv > span.v-plv__c
Isabel Pardo de Vera, a su llegada al Tribunal Supremo para declarar como testi… div.v-a-img-c > figure.v-a-fig > figcaption.v-fc > span.v-fc__t
Mbappé, protestando a Vincic por la roja a Camavinga. div.v-a-img-c > figure.v-a-fig > figcaption.v-fc > span.v-fc__t
Siete goles en el Allianz, con la eliminatoria igualada durante muchos minutos.… div.v-r__c > article.v-a > div.v-a-inf-c > p.v-a-s-t
Enviado especial a Múnich div.v-a-inf-c > div.v-op > div.v-op__c > span.v-op__p
Petroleros en el estrecho de Ormuz. div.v-a-img-c > figure.v-a-fig > figcaption.v-fc > span.v-fc__t
Washington combina la presión en el estrecho de Ormuz con los contactos con los… div.v-r-s__c > article.v-a > div.v-a-inf-c > p.v-a-s-t
Corresponsal en Estambul div.v-a-inf-c > div.v-op > div.v-op__c > span.v-op__p
El escenario incluiría bajadas de impuestos para la electricidad o suavización … div.v-r-s__c > article.v-a > div.v-a-inf-c > p.v-a-s-t
Corresponsal en Bruselas div.v-a-inf-c > div.v-op > div.v-op__c > span.v-op__p
El escrito pide a la Sala de lo Penal del alto tribunal que abra diligencias co… div.v-r-s__c > article.v-a > div.v-a-inf-c > p.v-a-s-t
Abascal y Meloni, las pasadas Navidades. div.v-a-img-c > figure.v-a-fig > figcaption.v-fc > span.v-fc__t
Tacha los últimos movimientos del presidente de EE.UU. de ser «poco comprensibl… div.v-r-s__c > article.v-a > div.v-a-inf-c > p.v-a-s-t
García protesta frente a Gómez de Celis, que ejercía de presidente. div.v-a-img-c > figure.v-a-fig > figcaption.v-fc > span.v-fc__t
Rechaza incluir enmiendas del PP que elevaban el reproche al resto de grupos po… div.v-r-s__c > article.v-a > div.v-a-inf-c > p.v-a-s-t
Una manifestante, este miércoles en Madrid. div.v-a-img-c > figure.v-a-fig > figcaption.v-fc > span.v-fc__t
(EP/Fernando Sánchez) div.v-a-img-c > figure.v-a-fig > figcaption.v-fc > span.v-fc__p
Con pancartas de luto, los afectados por el accidente han reclamado «memoria, v… div.v-r-s__c > article.v-a > div.v-a-inf-c > p.v-a-s-t
Vista aérea de la isla de Malé, capital de las Maldivas. div.v-a-img-c > figure.v-a-fig > figcaption.v-fc > span.v-fc__t
Alicante y Valencia div.v-a-inf-c > div.v-op > div.v-op__c > span.v-op__p
Konrad Berkowicz, durante su protesta en el Sejm polaco. div.v-a-img-c > figure.v-a-fig > figcaption.v-fc > span.v-fc__t
¿Por qué la izquierda siempre aspira a que cada vez menos tengan que mantener a… div.v-r__c > article.v-a > div.v-a-inf-c > p.v-a-s-t
Rufián, como Sánchez, prefiere estar en las redes que en la biblioteca: es lógi… div.v-r__c > article.v-a > div.v-a-inf-c > p.v-a-s-t
En parte, coincido con Sumar: la extrema derecha no es imbatible. Pero su antíd… div.v-r__c > article.v-a > div.v-a-inf-c > p.v-a-s-t
Aunque la muerte de la reina suele desencadenar una 'guerra civil' entre hembra… div.v-r__c > article.v-a > div.v-a-inf-c > p.v-a-s-t
Un estudio advierte de que los grandes modelos de lenguaje ofrecen información … div.v-r__c > article.v-a > div.v-a-inf-c > p.v-a-s-t
Isabelle Huppert, fotografiada en Madrid. div.v-a-img-c > figure.v-a-fig > figcaption.v-fc > span.v-fc__t
La estrella parisina presenta en España la película 'La mujer más rica del mund… div.v-r-s__c > article.v-a > div.v-a-inf-c > p.v-a-s-t
El alcalde Nueva York, Zohran Mamdani. div.v-a-img-c > figure.v-a-fig > figcaption.v-fc > span.v-fc__t
Última imagen captada de Orlinda Marín, el día de su desaparición. div.v-a-img-c > figure.v-a-fig > figcaption.v-fc > span.v-fc__t
La Policía está a la espera de un cotejo del ADN para confirmar que se trata de… div.v-r-s__c > article.v-a > div.v-a-inf-c > p.v-a-s-t
Miguel Ángel Perera principió de rodillas su faena a Tallista. div.v-a-img-c > figure.v-a-fig > figcaption.v-fc > span.v-fc__t
Una imagen de Trump junto a Jesucristo generada por IA. div.v-a-img-c > figure.v-a-fig > figcaption.v-fc > span.v-fc__t
El presidente estadounidense sigue con sus ataques contra el Vaticano por la po… div.v-r-s__c > article.v-a > div.v-a-inf-c > p.v-a-s-t
Palacio de Justicia de Burgos. div.v-a-img-c > figure.v-a-fig > figcaption.v-fc > span.v-fc__t
Aquello era para entretenerse e ir de fiesta. Esto de ahora, en cambio, es para… div.v-r__c > article.v-a > div.v-a-inf-c > p.v-a-s-t
Pablo Motos en 'El Hormiguero'. div.v-a-img-c > figure.v-a-fig > figcaption.v-fc > span.v-fc__t
Gold Dancer arrastra las patas traseras tras cruzar la meta. div.v-a-img-c > figure.v-a-fig > figcaption.v-fc > span.v-fc__t
Corresponsal en Centroeuropa div.v-a-inf-c > div.v-op > div.v-op__c > span.v-op__p
El presidente del Gobierno concluye su cuarta visita al gigante asiático en ape… div.v-r__c > article.v-a > div.v-a-inf-c > p.v-a-s-t
Corresponsal en Pekín div.v-a-inf-c > div.v-op > div.v-op__c > span.v-op__p
Se ha abierto una brecha entre lo que los prestamistas dicen que valen las acci… div.v-r__c > article.v-a > div.v-a-inf-c > p.v-a-s-t
Laporta durante el partido entre el Barcelona y el Atlético. div.v-a-img-c > figure.v-a-fig > figcaption.v-fc > span.v-fc__t
Laura Martínez y Ariane Toro son claras opciones de medalla en el europeo de Ti… div.v-r-s__c > article.v-a > div.v-a-inf-c > p.v-a-s-t

These are opportunities to improve the legibility of your content.

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
head > meta head > meta

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
AGUSTÍN PERY div.v-op > div.v-op__c > span.v-op__t > a
BRUNO PARDO PORTO div.v-op > div.v-op__c > span.v-op__t > a
LUIS HERRERO div.v-op > div.v-op__c > span.v-op__t > a
Contacto div.v-f__n > ul.v-f__u > li.v-f__l > a.v-f__a
Política de privacidad div.v-f__n > ul.v-f__u > li.v-f__l > a.v-f__a
Condiciones de uso div.v-f__n > ul.v-f__u > li.v-f__l > a.v-f__a
Aviso legal div.v-f__n > ul.v-f__u > li.v-f__l > a.v-f__a
Programación TV div.v-f__n > ul.v-f__u > li.v-f__l > a.v-f__a
Escuchar noticias del día div.v-f__n > ul.v-f__u > li.v-f__l > a.v-f__a
La Colmena div.v-f__n > ul.v-f__u > li.v-f__l > a.v-f__a
Sorteo del Niño comprobar número - La Verdad div.v-f__n > ul.v-f__u > li.v-f__l > a.v-f__a

These items highlight common accessibility best practices.

Interactive controls are keyboard focusable
Interactive elements indicate their purpose and state
The page has a logical tab order
Visual order on the page follows DOM order
User focus is not accidentally trapped in a region
The user's focus is directed to new content added to the page
HTML5 landmark elements are used to improve navigation
Offscreen content is hidden from assistive technology
Custom controls have associated labels
Custom controls have ARIA roles
`[aria-*]` attributes match their roles
`[aria-hidden="true"]` is not present on the document `<body>`
`[aria-*]` attributes are valid and not misspelled
Image elements have `[alt]` attributes
ARIA attributes are used as specified for the element's role
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
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
`[lang]` attributes have a valid value
Heading elements appear in a sequentially-descending order
Document has a main landmark.
Identical links have the same purpose.
`[accesskey]` values are unique
`button`, `link`, and `menuitem` elements have accessible names
Deprecated ARIA roles were not used
Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
`[aria-hidden="true"]` elements do not contain focusable descendents
ARIA input fields have accessible names
ARIA `meter` elements have accessible names
ARIA `progressbar` elements have accessible names
`[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
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
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.
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.
`<video>` elements contain a `<track>` element with `[kind="captions"]`
Tables have different content in the summary attribute and `<caption>`.
All heading elements contain content.
Uses ARIA roles only on compatible elements
Image elements do not have `[alt]` attributes that are redundant text.
Elements with visible text labels have matching accessible names.
Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.
`<td>` elements in a large `<table>` have one or more table headers.
96

Best Practices

General

Errors logged to the console indicate unresolved problems. They can come from network request failures and other browser concerns. Learn more about this errors in console diagnostic audit

Why this matters

Performance issues directly impact user engagement and conversion rates.

SourceDescription
Failed to load resource: net::ERR_CONNECTION_REFUSED
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 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
Detected JavaScript libraries
Page has valid source maps
Redirects HTTP traffic to HTTPS
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
robots.txt is valid
Image elements have `[alt]` attributes
Document has a valid `hreflang`
Document has a valid `rel=canonical`

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