Lighthouse Desktop

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

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Detailed Report

Audit breakdown by category with detailed findings.

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.

Request	Cache TTL	Transfer Size
cervantes.org/themes/custom/cervantes_theme/fonts/inter/Inter-Bold.ttf	1209600.0 s	310.7 KiB
cervantes.org/themes/custom/cervantes_theme/fonts/inter/Inter-SemiBold.ttf	1209600.0 s	310.3 KiB
cervantes.org/themes/custom/cervantes_theme/fonts/inter/Inter-Medium.ttf	1209600.0 s	309.3 KiB
cervantes.org/themes/custom/cervantes_theme/fonts/inter/Inter-Regular.ttf	1209600.0 s	304.5 KiB
www.google-analytics.com/analytics.js	7200.0 s	20.9 KiB
cervantes.org/themes/custom/cervantes_theme/fonts/fa/fa-brands-400.woff2	1209600.0 s	116.8 KiB
cdn.jsdelivr.net/gh/jfeltkamp/cookiesjsr@1/dist/cookiesjsr.min.js?v=1.0.13	604800.0 s	109.1 KiB
/sites/public/produccion/files/js/js_lov-6XIpuvZUjoaqTvgQ...	1209600.0 s	91.1 KiB
/sites/public/produccion/files/styles/carousel/public/202...	1209600.0 s	68.6 KiB
cervantes.org/themes/custom/cervantes_theme/fonts/dmsans/DMSans-Medium.ttf	1209600.0 s	55.5 KiB
cervantes.org/themes/custom/cervantes_theme/fonts/dmsans/DMSans-Regular.ttf	1209600.0 s	55.4 KiB
cervantes.org/themes/custom/cervantes_theme/fonts/dmsans/DMSans-SemiBold.ttf	1209600.0 s	55.4 KiB
cervantes.org/themes/custom/cervantes_theme/fonts/dmsans/DMSans-Bold.ttf	1209600.0 s	55.4 KiB
/sites/public/produccion/files/styles/noticias/public/202...	1209600.0 s	32.1 KiB
/sites/public/produccion/files/js/js_fQXajgLdcxakMdzDhRtm...	1209600.0 s	31.3 KiB
/sites/public/produccion/files/styles/noticias/public/202...	1209600.0 s	21.3 KiB
/sites/public/produccion/files/styles/carousel/public/202...	1209600.0 s	19.6 KiB
/sites/public/produccion/files/styles/destacados/public/2...	1209600.0 s	17.9 KiB
/sites/public/produccion/files/styles/noticias/public/202...	1209600.0 s	16.7 KiB
/sites/public/produccion/files/js/js_JVFG9aiivSNhdvZuPNgd...	1209600.0 s	16.6 KiB
/sites/public/produccion/files/styles/carousel/public/202...	1209600.0 s	16.5 KiB
/sites/public/produccion/files/styles/destacados/public/2...	1209600.0 s	15.8 KiB
/sites/public/produccion/files/styles/destacados/public/2...	1209600.0 s	14.7 KiB
/sites/public/produccion/files/styles/destacados/public/2...	1209600.0 s	11.9 KiB
/sites/public/produccion/files/js/js_9dAFRcPxG7w8ILVsjN0c...	1209600.0 s	9.5 KiB
cdn.jsdelivr.net/gh/jfeltkamp/cookiesjsr@1/dist/cookiesjsr-preloader.min.js	604800.0 s	7.8 KiB
/sites/public/produccion/files/js/js_SZd3v4C7fGRDWalJ3f3e...	1209600.0 s	7.5 KiB
/sites/public/produccion/files/styles/colaboradores_foote...	1209600.0 s	6.8 KiB
cervantes.org/themes/custom/cervantes_theme/images/logotipo.png	1209600.0 s	6.5 KiB
cervantes.org/themes/custom/cervantes_theme/fonts/icomoon/fonts/icomoon.ttf	1209600.0 s	6.2 KiB
cervantes.org/themes/custom/cervantes_theme/images/instituto-cervantes.svg	1209600.0 s	5.7 KiB
cervantes.org/themes/custom/cervantes_theme/images/ajax-loader.gif	1209600.0 s	4.1 KiB
/sites/public/produccion/files/styles/destacados/public/2...	1209600.0 s	4.0 KiB
cervantes.org/themes/custom/cervantes_theme/images/logo-ic-footer.gif	1209600.0 s	3.6 KiB
/sites/public/produccion/files/styles/colaboradores_foote...	1209600.0 s	2.9 KiB
/sites/public/produccion/files/js/js_fjio13pb2v5sxbHsJliM...	1209600.0 s	1.8 KiB
cervantes.org/themes/custom/cervantes_theme/images/externo.svg	1209600.0 s	1.8 KiB
cervantes.org/themes/custom/cervantes_theme/images/carrito.svg	1209600.0 s	1.5 KiB
cervantes.org/modules/custom/cookies_config/js/cookies_config.js?v=1.x	1209600.0 s	1.1 KiB
cervantes.org/modules/custom/cookies_config/js/js.cookie.min.js?v=3.0.5	1209600.0 s	919 B
cervantes.org/modules/contrib/google_tag/js/gtag.js?tbq8c1	1209600.0 s	762 B
cervantes.org/modules/contrib/google_tag/js/gtm.js?tbq8c1	1209600.0 s	605 B
cervantes.org/modules/contrib/cookies/js/cookiesjsr.conf.js?v=10.3.0	1209600.0 s	522 B
cervantes.org/themes/custom/cervantes_theme/images/flecha2.png	1209600.0 s	415 B
cervantes.org/themes/custom/cervantes_theme/images/flecha1.png	1209600.0 s	395 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.

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.

URL	Est Savings
cervantes.org/themes/custom/cervantes_theme/fonts/fa/fa-brands-400.woff2	295 ms
cervantes.org/themes/custom/cervantes_theme/fonts/icomoon/fonts/icomoon.ttf	170 ms

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:0.917 source:map[column:50335 line:2 type:source-location url:https://cervantes.org/sites/public/produccion/files/js/js_lov-6XIpuvZUjoaqTvgQJM0SqWShUUsRON1FzDTuFms.js?scope=footer&delta=0&language=es&theme=ica_bootstrap_ic&include=eJxtkNtuwzAIhl_Iix8JYYdaZMRYhnTtnn5O2m6NtBsOH-LngIXqjBEPBytV21BC1k5x7ltDmbKKYDMacG0d48NNiw2gn0wGWeuFS1z2aCcgmg-RU_mchqTq5h1b_I2gdQKu7IEzwh_mHItoQvkwvwvXEopqEQLHEsswEy54e1Ns2vRK_Y24qji3106vZRbrU55rwNMXjFas44Ak-H2PifWhf2X6snjY50Bypw50a2o0w4VlpBaHCPW9_f8ybq5gW1rZfwBDo5Wt urlProvider:network]] map[reflowTime:0.299 source:map[column:50393 line:2 type:source-location url:https://cervantes.org/sites/public/produccion/files/js/js_lov-6XIpuvZUjoaqTvgQJM0SqWShUUsRON1FzDTuFms.js?scope=footer&delta=0&language=es&theme=ica_bootstrap_ic&include=eJxtkNtuwzAIhl_Iix8JYYdaZMRYhnTtnn5O2m6NtBsOH-LngIXqjBEPBytV21BC1k5x7ltDmbKKYDMacG0d48NNiw2gn0wGWeuFS1z2aCcgmg-RU_mchqTq5h1b_I2gdQKu7IEzwh_mHItoQvkwvwvXEopqEQLHEsswEy54e1Ns2vRK_Y24qji3106vZRbrU55rwNMXjFas44Ak-H2PifWhf2X6snjY50Bypw50a2o0w4VlpBaHCPW9_f8ybq5gW1rZfwBDo5Wt urlProvider:network]] map[reflowTime:0.251 source:map[column:50457 line:2 type:source-location url:https://cervantes.org/sites/public/produccion/files/js/js_lov-6XIpuvZUjoaqTvgQJM0SqWShUUsRON1FzDTuFms.js?scope=footer&delta=0&language=es&theme=ica_bootstrap_ic&include=eJxtkNtuwzAIhl_Iix8JYYdaZMRYhnTtnn5O2m6NtBsOH-LngIXqjBEPBytV21BC1k5x7ltDmbKKYDMacG0d48NNiw2gn0wGWeuFS1z2aCcgmg-RU_mchqTq5h1b_I2gdQKu7IEzwh_mHItoQvkwvwvXEopqEQLHEsswEy54e1Ns2vRK_Y24qji3106vZRbrU55rwNMXjFas44Ak-H2PifWhf2X6snjY50Bypw50a2o0w4VlpBaHCPW9_f8ybq5gW1rZfwBDo5Wt urlProvider:network]] map[reflowTime:59.702 source:map[column:49615 line:2 type:source-location url:https://cervantes.org/sites/public/produccion/files/js/js_lov-6XIpuvZUjoaqTvgQJM0SqWShUUsRON1FzDTuFms.js?scope=footer&delta=0&language=es&theme=ica_bootstrap_ic&include=eJxtkNtuwzAIhl_Iix8JYYdaZMRYhnTtnn5O2m6NtBsOH-LngIXqjBEPBytV21BC1k5x7ltDmbKKYDMacG0d48NNiw2gn0wGWeuFS1z2aCcgmg-RU_mchqTq5h1b_I2gdQKu7IEzwh_mHItoQvkwvwvXEopqEQLHEsswEy54e1Ns2vRK_Y24qji3106vZRbrU55rwNMXjFas44Ak-H2PifWhf2X6snjY50Bypw50a2o0w4VlpBaHCPW9_f8ybq5gW1rZfwBDo5Wt urlProvider:network]] map[reflowTime:0.463 source:map[column:51395 line:2 type:source-location url:https://cervantes.org/sites/public/produccion/files/js/js_lov-6XIpuvZUjoaqTvgQJM0SqWShUUsRON1FzDTuFms.js?scope=footer&delta=0&language=es&theme=ica_bootstrap_ic&include=eJxtkNtuwzAIhl_Iix8JYYdaZMRYhnTtnn5O2m6NtBsOH-LngIXqjBEPBytV21BC1k5x7ltDmbKKYDMacG0d48NNiw2gn0wGWeuFS1z2aCcgmg-RU_mchqTq5h1b_I2gdQKu7IEzwh_mHItoQvkwvwvXEopqEQLHEsswEy54e1Ns2vRK_Y24qji3106vZRbrU55rwNMXjFas44Ak-H2PifWhf2X6snjY50Bypw50a2o0w4VlpBaHCPW9_f8ybq5gW1rZfwBDo5Wt urlProvider:network]] map[reflowTime:0.547 source:map[column:85575 line:2 type:source-location url:https://cervantes.org/sites/public/produccion/files/js/js_lov-6XIpuvZUjoaqTvgQJM0SqWShUUsRON1FzDTuFms.js?scope=footer&delta=0&language=es&theme=ica_bootstrap_ic&include=eJxtkNtuwzAIhl_Iix8JYYdaZMRYhnTtnn5O2m6NtBsOH-LngIXqjBEPBytV21BC1k5x7ltDmbKKYDMacG0d48NNiw2gn0wGWeuFS1z2aCcgmg-RU_mchqTq5h1b_I2gdQKu7IEzwh_mHItoQvkwvwvXEopqEQLHEsswEy54e1Ns2vRK_Y24qji3106vZRbrU55rwNMXjFas44Ak-H2PifWhf2X6snjY50Bypw50a2o0w4VlpBaHCPW9_f8ybq5gW1rZfwBDo5Wt urlProvider:network]] map[reflowTime:0.317 source:map[column:49637 line:2 type:source-location url:https://cervantes.org/sites/public/produccion/files/js/js_lov-6XIpuvZUjoaqTvgQJM0SqWShUUsRON1FzDTuFms.js?scope=footer&delta=0&language=es&theme=ica_bootstrap_ic&include=eJxtkNtuwzAIhl_Iix8JYYdaZMRYhnTtnn5O2m6NtBsOH-LngIXqjBEPBytV21BC1k5x7ltDmbKKYDMacG0d48NNiw2gn0wGWeuFS1z2aCcgmg-RU_mchqTq5h1b_I2gdQKu7IEzwh_mHItoQvkwvwvXEopqEQLHEsswEy54e1Ns2vRK_Y24qji3106vZRbrU55rwNMXjFas44Ak-H2PifWhf2X6snjY50Bypw50a2o0w4VlpBaHCPW9_f8ybq5gW1rZfwBDo5Wt 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.

	URL	Resource Size	Est Savings
Foto de familia de la inauguración de la exposición "Nuevas Letras en español" `div.col-xs-12 > div.card > a.sin-imagen-enlace > img.card-img-top`	/sites/public/produccion/files/styles/noticias/public/202...	31.8 KiB	25.1 KiB
García Montero, Gonzalo Celorio y su nieto `div.col-xs-12 > div.card > a.sin-imagen-enlace > img.card-img-top`	/sites/public/produccion/files/styles/noticias/public/202...	16.5 KiB	13.0 KiB
Diplomas DELE `div.destacado > a > div.contenido > img.img-responsive`	/sites/public/produccion/files/styles/destacados/public/2...	17.7 KiB	11.8 KiB
Destacado `div.destacado > a > div.contenido > img.img-responsive`	/sites/public/produccion/files/styles/destacados/public/2...	15.6 KiB	10.4 KiB
Recital poético de Ana Belén y Serrat en el homenaje del Cervantes a Joan Marga… `div.destacado > a > div.contenido > img.img-responsive`	/sites/public/produccion/files/styles/destacados/public/2...	14.6 KiB	9.7 KiB
Detacado `div.destacado > a > div.contenido > img.img-responsive`	/sites/public/produccion/files/styles/destacados/public/2...	11.7 KiB	7.8 KiB
Financiado por la Unión Europea NextGenerationEU `div.views-field > div.field-content > a.Unión > img.img-responsive`	/sites/public/produccion/files/styles/colaboradores_foote...	6.7 KiB	5.6 KiB
Logo del Instituto Cervantes `nav.navbar > div > a.logotipo > img`	cervantes.org/themes/custom/cervantes_theme/images/logotipo.png	6.4 KiB	4.8 KiB

Each subpart has specific improvement strategies. Ideally, most of the LCP time should be spent on loading the resources, not within delays.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:label label:Subpart valueType:text] map[key:duration label:Duration valueType:ms]]

items: [map[duration:4376.239 label:Time to first byte subpart:timeToFirstByte] map[duration:721.024 label:Resource load delay subpart:resourceLoadDelay] map[duration:242.082 label:Resource load duration subpart:resourceLoadDuration] map[duration:109.39 label:Element render delay subpart:elementRenderDelay]]

lhId: page-8-IMG

nodeLabel: Cultura se escribe contigo. Cursos de español en España

path: 1,HTML,1,BODY,3,DIV,1,DIV,0,DIV,1,SECTION,1,DIV,1,DIV,0,DIV,0,DIV,1,DIV,0,ARTICLE,0,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,IMG

selector: div#slick-slide00 > div > div > img.img-responsive

snippet: <img loading="lazy" src="/sites/public/produccion/files/styles/carousel/public/2026-02/cursos-espan…" width="1420" height="500" alt="Cultura se escribe contigo. Cursos de español en España" typeof="foaf:Image" class="img-responsive">

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-8-IMG

nodeLabel: Cultura se escribe contigo. Cursos de español en España

path: 1,HTML,1,BODY,3,DIV,1,DIV,0,DIV,1,SECTION,1,DIV,1,DIV,0,DIV,0,DIV,1,DIV,0,ARTICLE,0,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,IMG

selector: div#slick-slide00 > div > div > img.img-responsive

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

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.

URL	Transfer Size	Duration
/sites/public/produccion/files/css/css_WpZD7k2rZeKFWpYVfA...	99.2 KiB	394 ms
/sites/public/produccion/files/css/css_uOZczNbDM5c3SU7qCj...	8.0 KiB
/sites/public/produccion/files/js/js_fjio13pb2v5sxbHsJliM...	1.8 KiB
/sites/public/produccion/files/js/js_SZd3v4C7fGRDWalJ3f3e...	7.5 KiB
cervantes.org/modules/contrib/google_tag/js/gtm.js?tbq8c1	605 B
cervantes.org/modules/contrib/google_tag/js/gtag.js?tbq8c1	762 B
cdn.jsdelivr.net/npm/entreprise7pro-bootstrap@3.4.7/dist/css/bootstrap.min.css	19.6 KiB	250 ms
/npm/@unicorn-fail/drupal-bootstrap-styles@0.0.2/dist/3.3...	3.4 KiB
/npm/@unicorn-fail/drupal-bootstrap-styles@0.0.2/dist/3.4...	3.7 KiB
/npm/@unicorn-fail/drupal-bootstrap-styles@0.0.2/dist/3.2...	3.4 KiB
/npm/@unicorn-fail/drupal-bootstrap-styles@0.0.2/dist/3.1...	3.6 KiB
/npm/@unicorn-fail/drupal-bootstrap-styles@0.0.2/dist/3.1...	3.3 KiB
/npm/@unicorn-fail/drupal-bootstrap-styles@0.0.2/dist/3.2...	3.6 KiB
/npm/@unicorn-fail/drupal-bootstrap-styles@0.0.2/dist/3.3...	3.3 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: 1.4 s

URL	Time Spent
cervantes.es/	667 ms
www.cervantes.es/	190 ms
www.cervantes.es/	532 ms
cervantes.org/	0.0 ms

Keep the server response time for the main document short because all other requests depend on it. Learn more about the Time to First Byte metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 1.7 s

URL	Time Spent
cervantes.org/	1.8 s

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

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: 100 ms 112.9 KiB

URL	Transfer Size	Est Savings
/sites/public/produccion/files/css/css_WpZD7k2rZeKFWpYVfA...	99.1 KiB	94.6 KiB
cdn.jsdelivr.net/npm/entreprise7pro-bootstrap@3.4.7/dist/css/bootstrap.min.css	19.5 KiB	18.3 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: 200 ms 431.9 KiB

URL	Transfer Size	Est Savings
www.googletagmanager.com/gtag/js?id=G-F4FCEM5J85&cx=c&gtm=4e64k0	157.8 KiB	67.4 KiB
www.googletagmanager.com/gtag/js?id=G-57JPCLFY9Z&cx=c&gtm=4e64k0	158.0 KiB	66.1 KiB
www.googletagmanager.com/gtag/js?id=G-Z9V7YFW9ZK&cx=c&gtm=4e64k0	144.8 KiB	64.3 KiB
www.googletagmanager.com/gtag/js?id=G-VD16MRRKY3&cx=c&gtm=4e64k0	149.8 KiB	63.5 KiB
www.googletagmanager.com/gtm.js?id=GTM-PS6K4LP	128.5 KiB	61.2 KiB
/sites/public/produccion/files/js/js_lov-6XIpuvZUjoaqTvgQ...	91.0 KiB	59.7 KiB
cdn.jsdelivr.net/gh/jfeltkamp/cookiesjsr@1/dist/cookiesjsr.min.js?v=1.0.13	108.8 KiB	49.7 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.

URL	Transfer Size
cervantes.org/themes/custom/cervantes_theme/fonts/inter/Inter-Bold.ttf	310.7 KiB
cervantes.org/themes/custom/cervantes_theme/fonts/inter/Inter-SemiBold.ttf	310.3 KiB
cervantes.org/themes/custom/cervantes_theme/fonts/inter/Inter-Medium.ttf	309.3 KiB
cervantes.org/themes/custom/cervantes_theme/fonts/inter/Inter-Regular.ttf	304.5 KiB
www.googletagmanager.com/gtag/js?id=G-57JPCLFY9Z&cx=c&gtm=4e64k0	158.1 KiB
www.googletagmanager.com/gtag/js?id=G-F4FCEM5J85&cx=c&gtm=4e64k0	157.9 KiB
www.googletagmanager.com/gtag/js?id=G-VD16MRRKY3&cx=c&gtm=4e64k0	149.9 KiB
www.googletagmanager.com/gtag/js?id=G-Z9V7YFW9ZK&cx=c&gtm=4e64k0	144.8 KiB
www.googletagmanager.com/gtm.js?id=GTM-PS6K4LP	128.8 KiB
cervantes.org/themes/custom/cervantes_theme/fonts/fa/fa-brands-400.woff2	116.8 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
Foto de familia de la inauguración de la exposición "Nuevas Letras en español" `div.col-xs-12 > div.card > a.sin-imagen-enlace > img.card-img-top`	/sites/public/produccion/files/styles/noticias/public/202...
García Montero, Gonzalo Celorio y su nieto `div.col-xs-12 > div.card > a.sin-imagen-enlace > img.card-img-top`	/sites/public/produccion/files/styles/noticias/public/202...
Exposición «María Elena Walsh y Sara Facio: la palabra y la mirada» `div.col-xs-12 > div.card > a.sin-imagen-enlace > img.card-img-top`	/sites/public/produccion/files/styles/noticias/public/202...
Logo Insituto Cervantes `div.row > div.col-md-12 > a > img.img-responsive`	cervantes.org/themes/custom/cervantes_theme/images/logo-ic-footer.gif

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

●Max Potential First Input Delay 90 ms

●Layout shift culprits

●Optimize DOM size

●Modern HTTP

●Optimize viewport for mobile

●Minify CSS

●Minify JavaScript

●User Timing marks and measures 20 user timings

●JavaScript execution time 0.6 s

●Minimizes main-thread work 1.3 s

●Avoid long main-thread tasks 8 long tasks found

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 160 ms

●Server Backend Latencies 160 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Avoid large layout shifts 4 layout shifts found

○INP breakdown

○Avoid non-composited animations

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

Some ARIA roles have required attributes that describe the state of the element to screen readers. Learn more about roles and required attributes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.dialog-off-canvas-main-canvas > div.main-container > div.row > div.col-sm-12 `div.dialog-off-canvas-main-canvas > div.main-container > div.row > div.col-sm-12`

Focusable descendents within an `[aria-hidden="true"]` element prevent those interactive elements from being available to users of assistive technologies like screen readers. Learn how `aria-hidden` affects focusable elements.

Why this matters

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

Source: MDN Permissions-Policy

Failing Elements
Míticas fotos de Cortázar y Borges y el original de una canción censurada, entr… `div.col-xs-12 > div.card > div.card-body > h3.titulo`

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.

○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>`

●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

●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.

●Select elements have associated label elements.

●ARIA attributes are used as specified for the element's role

●Elements use only permitted ARIA attributes

●Background and foreground colors have a sufficient contrast ratio

●Document has a `<title>` element

●`<html>` element has a `[lang]` attribute

●`<html>` element has a valid value for its `[lang]` attribute

●Links 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.

●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.

●Elements with visible text labels have matching accessible names.

○`[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

○The document does not use `<meta http-equiv="refresh">`

○`<object>` elements have alternate text

○Skip links are focusable.

○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.

○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.

Best Practices

Trust and Safety

All sites should be protected with HTTPS, even ones that don't handle sensitive data. This includes avoiding mixed content, where some resources are loaded over HTTP despite the initial request being served over HTTPS. HTTPS prevents intruders from tampering with or passively listening in on the communications between your app and your users, and is a prerequisite for HTTP/2 and many new web platform APIs. Learn more about HTTPS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Insecure URL	Request Resolution
www.cervantes.es/	Allowed

●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

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`