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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.

26

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.

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.

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:154.968 source:map[type:text value:[unattributed]]]]

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.swiper-slide > a.chakra-link > picture > img.wef-n9lm85 div.swiper-slide > a.chakra-link > picture > img.wef-n9lm85
/community/image/responsive_large_webp_cUJKdAiLYJCmwVVq6c...517.6 KiB471.8 KiB
div.wef-17csfx1 > div.chakra-aspect-ratio > picture > img.chakra-image div.wef-17csfx1 > div.chakra-aspect-ratio > picture > img.chakra-image
/article/image/responsive_large_webp_NJlniFQxYj1f2f_FvgcI...130.8 KiB125.1 KiB
div.swiper-slide > div.wef-1uij82s > picture > img.wef-eoet0h div.swiper-slide > div.wef-1uij82s > picture > img.wef-eoet0h
/article/image/responsive_large_webp_-mQp0euW6dX20vlf02Wf...131.6 KiB83.6 KiB
div.wef-17csfx1 > div.chakra-aspect-ratio > picture > img.chakra-image div.wef-17csfx1 > div.chakra-aspect-ratio > picture > img.chakra-image
/article/image/responsive_large_webp_VjSTDbT_7HaZNnzIGqnR...128.2 KiB81.0 KiB
div.wef-1gnrjno > div.wef-1srmzni > div.wef-tqumyf > img.wef-1o9b4je div.wef-1gnrjno > div.wef-1srmzni > div.wef-tqumyf > img.wef-1o9b4je
www.weforum.org/packs/static/si-initiative-45d9653189ca943b0dc7.jpeg77.6 KiB76.2 KiB
div.swiper-slide > a.chakra-link > picture > img.wef-n9lm85 div.swiper-slide > a.chakra-link > picture > img.wef-n9lm85
/community/image/responsive_large_webp_c-zmSV2oX0cY0JSuSV...89.2 KiB53.1 KiB
div.wef-17csfx1 > div.chakra-aspect-ratio > picture > img.chakra-image div.wef-17csfx1 > div.chakra-aspect-ratio > picture > img.chakra-image
/article/image/responsive_large_webp_Lucr6ErMpqY8LhUZSJ6w...57.1 KiB51.6 KiB
div.wef-1th3fel > div.wef-1tr4eyi > picture > img.wef-19qvy6h div.wef-1th3fel > div.wef-1tr4eyi > picture > img.wef-19qvy6h
/collection/image/responsive_large_webp_bFActzUmXclYQ0kZA...96.1 KiB49.2 KiB
div.wef-17csfx1 > div.chakra-aspect-ratio > picture > img.chakra-image div.wef-17csfx1 > div.chakra-aspect-ratio > picture > img.chakra-image
/article/image/responsive_large_webp_DEezBJLIGJXjJRdXmc4g...89.3 KiB41.3 KiB
div.wef-1gnrjno > div.wef-1kvj0y4 > div.wef-1xt3ztg > img.wef-19ja7d2 div.wef-1gnrjno > div.wef-1kvj0y4 > div.wef-1xt3ztg > img.wef-19ja7d2
www.weforum.org/packs/static/uplink-initiative-ceff9cfdd2e858ac3307.jpeg77.0 KiB40.5 KiB
div.swiper-slide > div.wef-1uij82s > picture > img.wef-eoet0h div.swiper-slide > div.wef-1uij82s > picture > img.wef-eoet0h
/article/image/responsive_large_webp_tbNYUgJXPjBjxcCmXCpK...59.3 KiB26.6 KiB
div.wef-17csfx1 > div.chakra-aspect-ratio > picture > img.chakra-image div.wef-17csfx1 > div.chakra-aspect-ratio > picture > img.chakra-image
/article/image/responsive_large_webp_7M087Z2Q3z4QVYGknxw1...21.9 KiB17.6 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-12-VIDEO
nodeLabel: div.wef-1l63pvi > div.wef-1wmycnq > div.chakra-aspect-ratio > video.wef-0
path: 1,HTML,1,BODY,6,DIV,0,DIV,3,SECTION,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,DIV,0,VIDEO
selector: div.wef-1l63pvi > div.wef-1wmycnq > div.chakra-aspect-ratio > video.wef-0
snippet: <video autoplay="" muted="" playsinline="" loop="" src="https://cdn.jwplayer.com/v2/media/CsSwjh6M/poster.mp4?width=640" class="wef-0">

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.

More than 4 preconnect connections were found. These should be used sparingly and only to the most important origins.
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.

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

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: 1.2 s
URLTime Spent
weforum.org/1.2 s
www.weforum.org/0.0 ms

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

Minifying CSS files can reduce network payload sizes. Learn how to minify CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 300 ms 49.8 KiB
URLTransfer SizeEst Savings
/assets/application-a5591b3e426bc96757bdb09968aed043b2dd2...110.4 KiB49.8 KiB

Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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: 3.3 s 1.4 MiB
URLTransfer SizeEst Savings
www.weforum.org/packs/js/app-bundle-6fe0ba159cfc1b34391f.js438.2 KiB201.9 KiB
www.weforum.org/packs/js/922-352a71d0e9788b160e3c.js225.3 KiB130.7 KiB
www.googletagmanager.com/gtag/js?id=G-4DKG1LX6QK&cx=c&gtm=4e64h1175.9 KiB114.4 KiB
mfe.weforum.org/global-nav/next/s/659.9e80ad8fb1cafceb.js383.3 KiB114.3 KiB
www.googletagmanager.com/gtag/js?id=G-1RV0X04XBG&cx=c&gtm=4e64h1173.2 KiB72.2 KiB
www.googletagmanager.com/gtag/js?id=G-2K5FR2KRN5&cx=c&gtm=4e64h1171.8 KiB68.7 KiB
www.weforum.org/packs/js/93-c19c8d49cbcf5dd9c444.js82.9 KiB67.6 KiB
www.googletagmanager.com/gtag/js?id=AW-10828833886&cx=c&gtm=4e64h1176.0 KiB64.3 KiB
www.googletagmanager.com/gtag/js?id=AW-16759232739&cx=c&gtm=4e64h1145.6 KiB64.3 KiB
www.googletagmanager.com/gtm.js?id=GTM-W7SZB6C175.1 KiB63.7 KiB
www.googletagmanager.com/gtag/js?id=DC-13894911&cx=c&gtm=4e64h1129.4 KiB62.7 KiB
www.googletagmanager.com/gtag/js?id=AW-17334477208&cx=c&gtm=4e64h1140.5 KiB62.6 KiB
/cdn/edrv/va_gq-d728c477f0f4777c8be7f1f120d0c70b.br.js96.5 KiB61.4 KiB
www.weforum.org/packs/js/10-ac3f1aff0b8dfb42dbcd.js77.4 KiB50.4 KiB
www.weforum.org/packs/js/191-fbde39dcd171b6dc553a.js63.7 KiB50.2 KiB
auth.lrcontent.com/v2/LoginRadiusV2.js56.2 KiB49.9 KiB
auth-widgets.weforum.org/widgets/auth/v0.4.59/index.umd.js80.5 KiB45.8 KiB
/cdn/analysis/4.0/opaEv-1c7ce826a687aa150a0d779609032360b...44.1 KiB36.6 KiB
www.weforum.org/packs/js/application-6d79c5b7767f47dedde6.js28.2 KiB25.7 KiB
www.weforum.org/packs/js/40-ab65ef154c6c4cf00aed.js49.9 KiB25.2 KiB
/efc82a3f-4d9a-4cba-8bc2-a51619a84a40/cc.js?renew=false&r...120.6 KiB24.8 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.

URLTotal CPU TimeScript EvaluationScript Parse
www.weforum.org/packs/js/245-1cbfbba9c93ec6fde9b7.js2.5 s2.1 s16 ms
www.weforum.org/2.1 s42 ms23 ms
/efc82a3f-4d9a-4cba-8bc2-a51619a84a40/cc.js?renew=false&r...1.1 s472 ms43 ms
mfe.weforum.org/global-nav/next/s/659.9e80ad8fb1cafceb.js1.1 s671 ms215 ms
www.googletagmanager.com/gtm.js?id=GTM-W7SZB6C868 ms608 ms129 ms
www.weforum.org/packs/js/app-bundle-6fe0ba159cfc1b34391f.js854 ms619 ms160 ms
/cdn/edrv/va_gq-d728c477f0f4777c8be7f1f120d0c70b.br.js843 ms674 ms81 ms
mfe.weforum.org/global-nav/next/s/558.490117622e1be7a2.js746 ms679 ms0.5 ms
www.googletagmanager.com/gtag/js?id=G-1RV0X04XBG&cx=c&gtm=4e64h1742 ms691 ms42 ms
Unattributable736 ms44 ms0.0 ms
www.weforum.org/packs/js/922-352a71d0e9788b160e3c.js700 ms40 ms67 ms
www.googletagmanager.com/gtag/js?id=AW-10828833886&cx=c&gtm=4e64h1534 ms342 ms69 ms
www.weforum.org/packs/js/application-6d79c5b7767f47dedde6.js364 ms310 ms13 ms
consent.cookiebot.com/uc.js271 ms246 ms11 ms
www.googletagmanager.com/gtag/js?id=G-2K5FR2KRN5&cx=c&gtm=4e64h1265 ms215 ms48 ms
www.googletagmanager.com/gtag/js?id=AW-16759232739&cx=c&gtm=4e64h1210 ms168 ms41 ms
www.googletagmanager.com/gtag/js?id=AW-17334477208&cx=c&gtm=4e64h1191 ms154 ms36 ms
www.googletagmanager.com/gtag/js?id=DC-13894911&cx=c&gtm=4e64h1158 ms125 ms31 ms
www.googletagmanager.com/gtag/js?id=G-4DKG1LX6QK&cx=c&gtm=4e64h187 ms32 ms55 ms
auth-widgets.weforum.org/widgets/auth/v0.4.59/index.umd.js85 ms55 ms30 ms
/assets/application-a5591b3e426bc96757bdb09968aed043b2dd2...71 ms0.0 ms0.0 ms
/j.php?a=593726&u=https%3A%2F%2Fwww.weforum.org%2F&f=1&r=...71 ms58 ms8.6 ms
/cdn/analysis/4.0/opaEv-1c7ce826a687aa150a0d779609032360b...60 ms37 ms16 ms
/cdn/edrv/nc-367e6623b8f828e1b7169e212977ec69.br.js60 ms28 ms31 ms
www.weforum.org/packs/js/10-ac3f1aff0b8dfb42dbcd.js51 ms25 ms25 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 Evaluation8.6 s
Style & Layout2.1 s
Other1.7 s
Script Parsing & Compilation1.4 s
Parse HTML & CSS790 ms
Garbage Collection284 ms
Rendering255 ms

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
World Economic Forum logo div.wef-16gxeys > div.wef-0 > div.wef-ydr723 > img.chakra-image
www.weforum.org/a-weekly-logo.svg

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

Layout shift culprits
Optimize DOM size
LCP breakdown
Modern HTTP
Optimize viewport for mobile
Minify JavaScript
User Timing marks and measures 54 user timings
Avoid long main-thread tasks 20 long tasks found
Page didn't prevent back/forward cache restoration
Network Requests
Network Round Trip Times 140 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 30 ms
INP breakdown
Avoid non-composited animations
Avoid large layout shifts
87

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 parent roles must contain specific child roles to perform their intended accessibility functions. Learn more about roles and required children elements.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Sign in div#global-nav_root > div#global-nav_display > navbar > div#navbar_container

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.wef-1l63pvi > div.wef-1wmycnq > div.wef-1l9nceh > button.chakra-button div.wef-1l63pvi > div.wef-1wmycnq > div.wef-1l9nceh > button.chakra-button

Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Join us div#navbar_right-panel > public-bar-panel > div#public_right-panel_container > a.public-bar-panel__link
article.wef-ahbhn4 > div.wef-xnqvtg > div.wef-1qbpo0l > a.chakra-link article.wef-ahbhn4 > div.wef-xnqvtg > div.wef-1qbpo0l > a.chakra-link
article.wef-ahbhn4 > div.wef-xnqvtg > div.wef-1qbpo0l > a.chakra-link article.wef-ahbhn4 > div.wef-xnqvtg > div.wef-1qbpo0l > a.chakra-link
div.wef-70qvj9 > div.wef-3eu5vo > div.wef-0 > a.chakra-link div.wef-70qvj9 > div.wef-3eu5vo > div.wef-0 > a.chakra-link
div.wef-70qvj9 > div.wef-3eu5vo > div.wef-0 > a.chakra-link div.wef-70qvj9 > div.wef-3eu5vo > div.wef-0 > a.chakra-link
div.wef-70qvj9 > div.wef-3eu5vo > div.wef-0 > a.chakra-link div.wef-70qvj9 > div.wef-3eu5vo > div.wef-0 > a.chakra-link
article.wef-lv2neg > div.wef-xnqvtg > div.wef-1qbpo0l > a.chakra-link article.wef-lv2neg > div.wef-xnqvtg > div.wef-1qbpo0l > a.chakra-link
article.wef-lv2neg > div.wef-xnqvtg > div.wef-1qbpo0l > a.chakra-link article.wef-lv2neg > div.wef-xnqvtg > div.wef-1qbpo0l > a.chakra-link

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Interactive controls are keyboard focusable
Interactive elements indicate their purpose and state
The page has a logical tab order
Visual order on the page follows DOM order
User focus is not accidentally trapped in a region
The user's focus is directed to new content added to the page
HTML5 landmark elements are used to improve navigation
Offscreen content is hidden from assistive technology
Custom controls have associated labels
Custom controls have ARIA roles
`[aria-*]` attributes match their roles
`[aria-hidden="true"]` is not present on the document `<body>`
`[role]`s have all required `[aria-*]` attributes
`[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
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
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
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.
`[lang]` attributes have a valid value
Heading elements appear in a sequentially-descending order
Document has a main landmark.
Deprecated ARIA roles were not used
`<video>` elements contain a `<track>` element with `[kind="captions"]`
Identical links have the same purpose.
Elements with visible text labels have matching accessible names.
`[accesskey]` values are unique
`button`, `link`, and `menuitem` elements 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
Form elements have associated labels
Links are distinguishable without relying on color.
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
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.
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.
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.
88

Best Practices

User Experience

Image display dimensions should match natural aspect ratio. Learn more about image aspect ratio.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLAspect Ratio (Displayed)Aspect Ratio (Actual)
logo div#CybotCookiebotDialogHeader > div#CybotCookiebotDialogHeaderLogosWrapper > div#CybotCookiebotDialogPoweredbyLink > img#CybotCookiebotDialogPoweredbyImage
46 x 34 (1.35)46 x 46 (1.00)

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
Uncaught TypeError: Cannot set properties of null (setting 'lastSetTimerId')

Issues logged to the `Issues` panel in Chrome Devtools indicate unresolved problems. They can come from network request failures, insufficient security controls, and other browser concerns. Open up the Issues panel in Chrome DevTools for more details on each issue.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Issue type
Content security policy

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
Serves images with appropriate resolution
Page has the HTML doctype
Properly defines charset
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
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`

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