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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.

28

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
vdmedia.elpais.com/elpaistop/multimedia/20264/15/1159718.mp40.0 ms1.7 MiB
/dist/resources/js/bb68fdafcde215f438478153f2f47c32/ENP-s...30.0 s192.4 KiB
assets.adobedtm.com/0681c221600c/d0943e7fed9e/launch-90f4fb204f3b.min.js3600.0 s140.3 KiB
c.amazon-adsystem.com/aax2/apstag.js3600.0 s90.8 KiB
player.prisamedia.com/core//js/coreplayer.min.js0.0 ms69.5 KiB
ak-ads-ns.prisasd.com/slot/elpais/slot.js0.0 ms52.9 KiB
sdk.mrf.io/statics/marfeel-sdk.js?id=22231800.0 s60.1 KiB
static.prisa.com/dist/subs/pmwall/1.3.0/pmwall.min.js0.0 ms37.6 KiB
static.prisa.com/dist/subs/pmcompass/1.0.0/pmcompass.iife.js0.0 ms35.9 KiB
dd.elpais.com/tags.js3600.0 s39.4 KiB
/dist/resources/css/bb68fdafcde215f438478153f2f47c32/ENP/...30.0 s30.6 KiB
/0681c221600c/d0943e7fed9e/eab809f3921c/RC4f707dd6fa144f7...3600.0 s36.3 KiB
/8ba38674-edba-484d-8053-435051d79f72/loader.js?target=el...7200.0 s34.2 KiB
static.prisa.com/dist/subs/pmuser/2.5.0/pmuser.min.js0.0 ms25.6 KiB
sdk.mrf.io/statics/4f3040276b65d670f769.js3600.0 s23.4 KiB
player.prisamedia.com/componentes/reels/reels.lib.js0.0 ms13.4 KiB
player.prisamedia.com/core//skins/epaudioportada/epaudioportada.min.js0.0 ms12.5 KiB
/dist/resources/images/logos/classifieds/escaparate_elpai...0.0 ms10.6 KiB
cmp.prisa.com/dist/cmp_ep.js0.0 ms8.3 KiB
/dist/resources/images/sections/el-pais-expres/logo-pais-...0.0 ms5.6 KiB
/dist/subs/securesharesession/v2/latest/securesharesessio...0.0 ms5.6 KiB
player.prisamedia.com/core//skins/epaudioportada/css/player.css0.0 ms4.3 KiB
/dist/resources/images/commercial/kicker/buenahuella/buen...0.0 ms4.2 KiB
es-config.sensic.net/s2s-web.js1209600.0 s31.0 KiB
/dist/resources/images/sections/escaparate/logo-escaparat...3600.0 s3.7 KiB
static.elpais.com/dist/resources/images/sections/economia5d/linea-cincodias.svg30.0 s2.8 KiB
player.prisamedia.com/core//style/core.css0.0 ms2.5 KiB
static.elpais.com/dist/resources/images/logos/primary/el-pais-slogan-esp.svg0.0 ms2.5 KiB
static.elpais.com/dist/resources/images/logos/primary/el-pais-50.svg30.0 s2.5 KiB
static.elpais.com/dist/resources/images/swipe/logo-escaparate.svg0.0 ms2.5 KiB
/dist/resources/images/commercial/kicker/buenahuella/buen...0.0 ms2.4 KiB
player.prisamedia.com/core//skins/epaudioportada/css/player-storycard.css0.0 ms1.9 KiB
/dist/resources/images/sections/el-pais-expres/icono-hamb...30.0 s1.4 KiB
static.elpais.com/dist/resources/images/logos/primary/el-pais.svg3600.0 s1.4 KiB
/0681c221600c/d0943e7fed9e/eab809f3921c/RC6d06c68917d84e9...3600.0 s1.4 KiB
static.elpais.com/dist/resources/images/v2/ico-play.svg0.0 ms1008 B
static.elpais.com/dist/resources/images/thematic/en_video.svg0.0 ms929 B
static.elpais.com/dist/resources/images/v2/e_suscripcion.svg0.0 ms896 B
player.prisamedia.com/core/js/coreplayer_launcher.js0.0 ms887 B
config.aps.amazon-adsystem.com/configs/32263600.0 s987 B
/dist/resources/images/sections/el-pais-expres/expres_che...0.0 ms619 B
pagead2.googlesyndication.com/pagead/osd.js?fcd=true3600.0 s76 B

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:96.591 source:map[column:1707 line:6 type:source-location url:/_/mss/boq-content-ads-contributor/_/js/k=boq-content-ads-contributor.ContributorServingResponseClientJs.en_US.WQSjKtkEYiM.es5.O/d=1/exm=kernel_loader,loader_js_executable/ed=1/rs=AJlcJMwIx8fty2eKv_YgAn45g2tx1JaJ2w/m=ad_blocking_detection_executable 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:18.076 source:map[type:text value:[unattributed]]] map[reflowTime:110.582 source:map[column:1628 line:5 type:source-location url:/_/mss/boq-content-ads-contributor/_/js/k=boq-content-ads-contributor.ContributorServingResponseClientJs.en_US.WQSjKtkEYiM.es5.O/d=1/exm=kernel_loader,loader_js_executable/ed=1/rs=AJlcJMwIx8fty2eKv_YgAn45g2tx1JaJ2w/m=ad_blocking_detection_executable 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-VIDEO
nodeLabel: article.c > div.c_m > span.c_m_c > video#vloop_185
path: 1,HTML,1,BODY,9,MAIN,0,DIV,0,SECTION,0,DIV,0,ARTICLE,0,DIV,0,SPAN,0,VIDEO
selector: article.c > div.c_m > span.c_m_c > video#vloop_185
snippet: <video id="vloop_185" class="_re" width="560" height="315" data-poster="https://imagenes.elpais.com/resizer/v2/CKVFVD52KZAABJWBDUHIFOKVKQ.jpg?auth…" data-src="https://vdmedia.elpais.com/elpaistop/multimedia/20264/15/1159718.mp4" data-title="Irán amenaza con impedir el comercio marítimo en la región si Trump sigue …" muted="" loop="" aria-hidden="true" src="https://vdmedia.elpais.com/elpaistop/multimedia/20264/15/1159718.mp4" poster="https://imagenes.elpais.com/resizer/v2/CKVFVD52KZAABJWBDUHIFOKVKQ.jpg?auth…" playsinline="" autoplay="">

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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
article.c > div.c_m > span.c_m_c > img.c_m_e article.c > div.c_m > span.c_m_c > img.c_m_e
/resizer/v2/4Q64J7N3CJCBVFGV3UCEVFHA6Q.jpg?auth=d98318190...79.5 KiB78.3 KiB
article.c > div.c_m > span.c_m_c > img.c_m_e article.c > div.c_m > span.c_m_c > img.c_m_e
/resizer/v2/74NWTUGER5GAVPSS5PNPFLIKJY.jpg?auth=03c830d1b...88.9 KiB76.2 KiB
article.c > figure.c_m > span.c_m_c > img.c_m_e article.c > figure.c_m > span.c_m_c > img.c_m_e
/resizer/v2/U6J6ACTVJFB43K6VSYPIYUU4P4.jpg?auth=018725973...87.3 KiB70.4 KiB
article.c > div.c_m > span.c_m_c > img.c_m_e article.c > div.c_m > span.c_m_c > img.c_m_e
/resizer/v2/STZCU542WFBSZHMJY6C7XVHUZE.jpg?auth=2ae3029ce...54.3 KiB53.5 KiB
article.c > div.c_m > span.c_m_c > img.c_m_e article.c > div.c_m > span.c_m_c > img.c_m_e
/resizer/v2/KBMMNPJN2NGALHESN6AUWOSJFM.jpg?auth=ff12d10d1...52.7 KiB50.3 KiB
article.c > div.c_m > span.c_m_c > img.c_m_e article.c > div.c_m > span.c_m_c > img.c_m_e
/resizer/v2/TLNLERVBPJDXJOL3QB6ZY4MDMU.jpg?auth=418233776...46.5 KiB44.4 KiB
article.c > figure.c_m > span.c_m_c > img.c_m_e article.c > figure.c_m > span.c_m_c > img.c_m_e
/resizer/v2/G2WTPIHTYFMOHOO6MXQMCHAZTE.jpg?auth=2a83668be...47.8 KiB38.2 KiB
article.c > figure.c_m > span.c_m_c > img.c_m_e article.c > figure.c_m > span.c_m_c > img.c_m_e
/resizer/v2/24OUM7YSJRBYBGJOLRZDKA2C3E.jpg?auth=395510ecb...36.7 KiB29.3 KiB
article.c > div.c_m > span.c_m_c > img.c_m_e article.c > div.c_m > span.c_m_c > img.c_m_e
/resizer/v2/H3LWMMAD6JALPNUZHTQZE3UAJA.jpg?auth=8e0cdea90...29.5 KiB28.2 KiB
article.c > div.c_m > span.c_m_c > img.c_m_e article.c > div.c_m > span.c_m_c > img.c_m_e
/resizer/v2/ZX3ORAQDFZAQ3AJU3KJ3JLGA64.jpg?auth=5ec772bac...32.5 KiB25.9 KiB
En busca y captura uno de los conductores acusados del pique mortal en los túne… article.c > div.c_m > span.c_m_c > img.c_m_e
/resizer/v2/UNXIA24YSJBHDAXFLC26SFK7TY.jpg?auth=3ff03d737...19.9 KiB15.9 KiB
article.c > div.c_m > span.c_m_c > video#vloop_185 article.c > div.c_m > span.c_m_c > video#vloop_185
/resizer/v2/CKVFVD52KZAABJWBDUHIFOKVKQ.jpg?auth=e668156f5...24.1 KiB11.4 KiB

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

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 60.8 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.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTotal CPU TimeScript EvaluationScript Parse
elpais.com/4.9 s101 ms17 ms
Unattributable1.7 s367 ms0.0 ms
sdk.mrf.io/statics/marfeel-sdk.js?id=22231.1 s1.1 s1.6 ms
assets.adobedtm.com/0681c221600c/d0943e7fed9e/launch-90f4fb204f3b.min.js815 ms673 ms107 ms
/f/AGSKWxU772CjjWVxfmq7kTyZ317uJQoocVzqOOp4PH52sDsmZy_4ay...496 ms41 ms1.7 ms
/sdk/d4911c3d5b4b9a80b40e05167f53d1b1e8da81f3/modern/sdk....463 ms390 ms51 ms
dd.elpais.com/tags.js450 ms362 ms14 ms
/dist/resources/js/bb68fdafcde215f438478153f2f47c32/ENP-s...384 ms214 ms144 ms
ak-ads-ns.prisasd.com/slot/elpais/slot.js293 ms95 ms21 ms
/sdk/d4911c3d5b4b9a80b40e05167f53d1b1e8da81f3/modern/ui-w...274 ms172 ms33 ms
player.prisamedia.com/core//js/coreplayer.min.js267 ms113 ms44 ms
/f/AGSKWxWl4OHVOhONFmrW5xi_scJ2jYwch61PP591wCtLQJVTlKBzlH...266 ms227 ms35 ms
c.amazon-adsystem.com/aax2/apstag.js250 ms192 ms45 ms
cmp.prisa.com/dist/cmp_ep.js185 ms167 ms4.1 ms
static.prisa.com/dist/subs/pmcompass/1.0.0/pmcompass.iife.js122 ms85 ms37 ms
es-config.sensic.net/s2s-web.js112 ms84 ms19 ms
static.prisa.com/dist/subs/pmwall/1.3.0/pmwall.min.js102 ms80 ms22 ms
static.prisa.com/dist/subs/pmuser/2.5.0/pmuser.min.js88 ms65 ms21 ms
/sdk/d4911c3d5b4b9a80b40e05167f53d1b1e8da81f3/modern/src_...87 ms70 ms0.9 ms
/dist/subs/securesharesession/v2/latest/securesharesessio...77 ms72 ms2.8 ms
accounts.google.com/gsi/client68 ms32 ms35 ms
player.prisamedia.com/core//skins/epaudioportada/epaudioportada.min.js61 ms20 ms6.3 ms
/0681c221600c/d0943e7fed9e/eab809f3921c/RC4f707dd6fa144f7...60 ms19 ms37 ms
config.aps.amazon-adsystem.com/configs/322654 ms50 ms1.5 ms
elpais.com/arc/subs/p.min.js53 ms36 ms16 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

CategoryTime Spent
Script Evaluation4.9 s
Other3.9 s
Style & Layout1.8 s
Rendering1.3 s
Script Parsing & Compilation758 ms
Garbage Collection156 ms
Parse HTML & CSS142 ms

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 6.9 KiB
URLTransfer SizeEst Savings
player.prisamedia.com/componentes/reels/reels.lib.js13.3 KiB6.9 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.

Retina div.b_h_w > h2.b_h_h > a.b_h_t > img.b_h_t_i
Los 40 div.b_h_w > h2.b_h_h > a.b_h_t > img.b_h_t_i

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

Layout shift culprits
Document request latency
Optimize DOM size
Font display
LCP breakdown
Modern HTTP
Optimize viewport for mobile
Minify CSS
User Timing marks and measures 9 user timings
Avoid long main-thread tasks 20 long tasks found
Avoid non-composited animations 5 animated elements found
Page didn't prevent back/forward cache restoration
Network Requests
Network Round Trip Times 180 ms
Server Backend Latencies 630 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 80 ms
INP breakdown
Avoid large layout shifts
100

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.

Interactive controls are keyboard focusable
Interactive elements indicate their purpose and state
The page has a logical tab order
Visual order on the page follows DOM order
User focus is not accidentally trapped in a region
The user's focus is directed to new content added to the page
HTML5 landmark elements are used to improve navigation
Offscreen content is hidden from assistive technology
Custom controls have associated labels
Custom controls have ARIA roles
`[aria-*]` attributes match their roles
`[aria-hidden="true"]` is not present on the document `<body>`
`[role]`s have all required `[aria-*]` attributes
`[role]` values are valid
`[aria-*]` attributes have valid values
`[aria-*]` attributes are valid and not misspelled
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
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
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
Identical links have the same purpose.
`[accesskey]` values are unique
`button`, `link`, and `menuitem` elements have accessible names
ARIA `meter` elements have accessible names
ARIA `progressbar` elements have accessible names
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
`[role]`s are contained by their required parent element
Elements with the `role=text` attribute do not have focusable descendents.
ARIA toggle fields have accessible names
ARIA `tooltip` elements have accessible names
ARIA `treeitem` elements have accessible names
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.
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>`.
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
No se ha podido obtener el ECID del servicio alloy.getIdentity

Source maps translate minified code to the original source code. This helps developers debug in production. In addition, Lighthouse is able to provide further insights. Consider deploying source maps to take advantage of these benefits. Learn more about source maps.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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
Redirects HTTP traffic to HTTPS
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.

Crawling and Indexing

Search engines may use `href` attributes on links to crawl websites. Ensure that the `href` attribute of anchor elements links to an appropriate destination, so more pages of the site can be discovered. Learn how to make links crawlable

Why this matters

Performance issues directly impact user engagement and conversion rates.

Uncrawlable Link
our 1007 partners div.pmConsentWall-main > div.pmConsentWall-main-inner > div.pmConsentWall-paragraph > a

To appear in search results, crawlers need access to your app.

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
robots.txt is valid
Image elements have `[alt]` attributes
Document has a valid `hreflang`
Document has a valid `rel=canonical`

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