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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.

13

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
c.amazon-adsystem.com/aax2/apstag.js3600.0 s91.0 KiB
macro.adnami.io/macro/gen/adsm.macro.rmb.js11808.0 s25.4 KiB
assets.pinterest.com/js/pinit_main.js?0.30153224580862215300.0 s18.4 KiB
www.google-analytics.com/analytics.js7200.0 s20.9 KiB
www.dezeen.com/cdn-cgi/challenge-platform/h/b/scripts/jsd/0b8fb825cb67/main.js?14400.0 s12.6 KiB
player.vimeo.com/api/player.js1800.0 s9.0 KiB
cdn.petametrics.com/5mvqi8soiha8ffm0.js?ts=493557691200.0 s54.4 KiB
/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312...86400.0 s10.7 KiB
macro.adnami.io/macro/hosts/adsm.macro.dezeen.com.js11934.0 s4.8 KiB
connect.facebook.net/en_GB/all.js#xfbml=1&appId=1175039416286461200.0 s1.8 KiB
dezeenhq.disqus.com/count.js300.0 s1.5 KiB
/count-data.js?1=2313249%20https%3A%2F%2Fwww.dezeen.com%2...600.0 s1.4 KiB
/count-data.js?1=2318027%20https%3A%2F%2Fwww.dezeen.com%2...600.0 s1.3 KiB
www.google-analytics.com/plugins/ua/linkid.js3600.0 s995 B
www.dezeen.com/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.js2868.0 s738 B
config.aps.amazon-adsystem.com/configs/cb9bd457-8d6c-40a0-9255-e8e1ebda32d73600.0 s722 B
assets.pinterest.com/js/pinit.js300.0 s452 B
/v3/5mvqi8soiha8ffm0/0b9980cf-01bf-4113-c4d4-e7d6a98ee8e7...0.0 ms147 B
/v3/5mvqi8soiha8ffm0/0b9980cf-01bf-4113-c4d4-e7d6a98ee8e7...0.0 ms85 B
/v3/5mvqi8soiha8ffm0/0b9980cf-01bf-4113-c4d4-e7d6a98ee8e7...0.0 ms85 B
/v3/5mvqi8soiha8ffm0/0b9980cf-01bf-4113-c4d4-e7d6a98ee8e7...0.0 ms85 B
/v3/5mvqi8soiha8ffm0/0b9980cf-01bf-4113-c4d4-e7d6a98ee8e7...0.0 ms85 B
/v3/5mvqi8soiha8ffm0/0b9980cf-01bf-4113-c4d4-e7d6a98ee8e7...0.0 ms85 B
/v3/5mvqi8soiha8ffm0/0b9980cf-01bf-4113-c4d4-e7d6a98ee8e7...0.0 ms85 B
hello.myfonts.net/count/3296ad604800.0 s371 B

Layout shifts occur when elements move absent any user interaction. Investigate the causes of layout shifts, such as elements being added, removed, or their fonts changing as the page loads.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]
items: [map[node:map[type:text value:Total] score:0.312272] map[node:map[boundingRect:map[bottom:8791 height:17579 left:0 right:412 top:-8789 width:412] lhId:page-10-::before nodeLabel:body.home > div.page-wrap > ::before path:2,HTML,1,BODY,8,DIV,0,::before selector:body.home > div.page-wrap > ::before snippet:<::before> type:node] score:0.255468 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:368 height:176 left:15 right:191 top:192 width:176] lhId:page-4-IMG nodeLabel:Capsule Plaza 2024 path:2,HTML,1,BODY,8,DIV,0,DIV,4,DIV,0,DIV,2,ASIDE,3,UL,0,DIV,0,DIV,2,LI,0,A,0,FIGURE,0,IMG selector:li.carousel_block_1 > a > figure > img.attachment-medium snippet:<img width="300" height="300" src="https://static.dezeen.com/uploads/2026/04/capsule-plaza-news_dezeen_2364_c…" class="attachment-medium size-medium nolazy" alt="Capsule Plaza 2024" decoding="async" loading="eager" fetchpriority="high" data-pin-nopin="true"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:8791 height:17579 left:0 right:412 top:-8789 width:412] lhId:page-10-::before nodeLabel:body.home > div.page-wrap > ::before path:2,HTML,1,BODY,8,DIV,0,::before selector:body.home > div.page-wrap > ::before snippet:<::before> type:node] score:0.056804 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:368 height:176 left:15 right:191 top:192 width:176] lhId:page-4-IMG nodeLabel:Capsule Plaza 2024 path:2,HTML,1,BODY,8,DIV,0,DIV,4,DIV,0,DIV,2,ASIDE,3,UL,0,DIV,0,DIV,2,LI,0,A,0,FIGURE,0,IMG selector:li.carousel_block_1 > a > figure > img.attachment-medium snippet:<img width="300" height="300" src="https://static.dezeen.com/uploads/2026/04/capsule-plaza-news_dezeen_2364_c…" class="attachment-medium size-medium nolazy" alt="Capsule Plaza 2024" decoding="async" loading="eager" fetchpriority="high" data-pin-nopin="true"> type:node]]] type:subitems]]]

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:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:112.251 source:map[column:30453 line:2 type:source-location url:https://www.dezeen.com/wp-includes/js/jquery/jquery.min.js?ver=3.6.4 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:43.353 source:map[column:27 line:229 type:source-location url:https://www.dezeen.com/ urlProvider:network]] map[reflowTime:22.465 source:map[column:47582 line:1 type:source-location url:https://www.dezeen.com/wp-includes/js/jquery/jquery.min.js?ver=3.6.4 urlProvider:network]] map[reflowTime:14.061 source:map[column:33736 line:1 type:source-location url:https://www.dezeen.com/wp-includes/js/jquery/jquery.min.js?ver=3.6.4 urlProvider:network]] map[reflowTime:51.189 source:map[column:51909 line:1 type:source-location url:https://www.dezeen.com/wp-includes/js/jquery/jquery.min.js?ver=3.6.4 urlProvider:network]] map[reflowTime:22.498 source:map[column:51931 line:1 type:source-location url:https://www.dezeen.com/wp-includes/js/jquery/jquery.min.js?ver=3.6.4 urlProvider:network]] map[reflowTime:0.689 source:map[column:13450 line:1 type:source-location url:https://www.dezeen.com/wp-includes/js/jquery/jquery.min.js?ver=3.6.4 urlProvider:network]] map[reflowTime:1.349 source:map[column:13611 line:1 type:source-location url:https://www.dezeen.com/wp-includes/js/jquery/jquery.min.js?ver=3.6.4 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.

URLResource SizeEst Savings
TPAC in Nashville by BIG li.carousel_block_1 > a > figure > img.attachment-medium
/uploads/2026/04/big-tpac-nashville-metal-curtain_dezeen_...1.0 MiB1.0 MiB
Issey Miyake furniture li.carousel_block_2 > a > figure > img.attachment-medium
/uploads/2026/04/the-paper-log-shell-and-core-issey-miyak...1002.8 KiB983.9 KiB
Ryugyong Hotel in Pyongyang li.carousel_block_1 > a > figure > img.attachment-medium
/uploads/2026/04/famously-stalled-construction-projects_d...924.8 KiB906.1 KiB
Eden Gardens by Populous li.carousel_block_1 > a > figure > img.attachment-medium
/uploads/2026/04/eden-gardens-populous-renovation-india-c...708.1 KiB690.1 KiB
Capsule Plaza 2024 li.carousel_block_1 > a > figure > img.attachment-medium
/uploads/2026/04/capsule-plaza-news_dezeen_2364_col_99_de...684.3 KiB624.8 KiB
Clock with hands made of people li.carousel_block_1 > a > figure > img.attachment-medium
/uploads/2026/04/The-Peoples-Clock-marten-baas-schiphol_d...512.6 KiB497.1 KiB
Brutalist house on Jeju Island li.carousel_block_3 > a > figure > img.attachment-homepage_carousel
/uploads/2026/04/brutalist-korea-book-paul-tulett_dezeen_...36.9 KiB21.5 KiB
President Trump arch li.carousel_block_3 > a > figure > img.attachment-homepage_carousel
/uploads/2026/04/triumphal-arch-donald-trump-washington-d...31.7 KiB16.1 KiB
Selfridges' members club li.carousel_block_2 > a > figure > img.attachment-homepage_carousel
/uploads/2026/04/40-duke-st-nice-projects_dezeen_2364_col...29.5 KiB14.0 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-9-IMG
nodeLabel: XL Extralight's Airstone bag
path: 2,HTML,1,BODY,8,DIV,0,DIV,4,DIV,1,DIV,0,MAIN,1,UL,0,LI,0,ARTICLE,0,HEADER,0,A,0,FIGURE,0,PICTURE,2,IMG
selector: a > figure > picture > img.lazyloaded
snippet: <img src="https://static.dezeen.com/uploads/2026/04/XL-Extralight-Airstone-Milan-des…" class="lazyloaded" alt="XL Extralight's Airstone bag" loading="lazy" data-lazy-type="true" width="411" height="411">

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.

URLTransfer SizeDuration
www.dezeen.com/wp-includes/js/wp-util.min.js?ver=6.2.2872 B
www.dezeen.com/wp-includes/js/underscore.min.js?ver=1.13.47.6 KiB151 ms
static.dezeen.com/d/assets/js/algolia/algoliasearch-lite.umd.js?ver=1.1.54.5 KiB167 ms
www.dezeen.com/wp-includes/js/dist/vendor/wp-polyfill-inert.min.js?ver=3.1.22.6 KiB
www.dezeen.com/wp-includes/js/jquery/jquery-migrate.min.js?ver=3.4.06.3 KiB151 ms
www.dezeen.com/wp-includes/js/jquery/jquery.min.js?ver=3.6.431.0 KiB904 ms
static.dezeen.com/assets/css/most-loved/fonts/729836/15B289529921CCB42.css41.1 KiB780 ms
www.dezeen.com/wp-includes/js/dist/hooks.min.js?ver=4169d3cf8e8d95a3d6d52.3 KiB
www.dezeen.com/wp-content/themes/2016dezeen/assets/css/lightbox.min.css?ver=2.01.5 KiB
/d/assets/css/style-min.css?ver=ed35850729ab3f15290aeaf78...16.4 KiB334 ms
www.dezeen.com/wp-includes/js/dist/vendor/regenerator-runtime.min.js?ver=0.13.112.6 KiB
/d/assets/css/dezeen-global-style-min.css?ver=ed35850729a...22.5 KiB1.3 s
www.dezeen.com/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.js738 B
www.dezeen.com/wp-includes/css/dist/block-library/style.min.css?ver=6.2.212.6 KiB452 ms
/d/assets/js/card-link.js?ver=ed35850729ab3f15290aeaf782d...577 B
www.dezeen.com/wp-includes/css/classic-themes.min.css?ver=6.2.21.5 KiB151 ms
/d/assets/js/min/scripts-min.js?ver=ed35850729ab3f15290ae...4.4 KiB
/wp-content/plugins/dezeen-services/assets/css/widget.css...1.8 KiB
www.dezeen.com/wp-content/themes/2016dezeen/assets/css/style-min.css?ver=2.018.2 KiB
www.dezeen.com/wp-includes/js/dist/vendor/wp-polyfill.min.js?ver=3.15.06.5 KiB151 ms
/d/assets/js/adex.js?ver=ed35850729ab3f15290aeaf782dd4503...281 B
www.dezeen.com/wp-includes/js/dist/i18n.min.js?ver=9e794f35a71bb98672ae4.0 KiB151 ms
/d/assets/js/min/liftigniter-workhorse-min.js?ver=ed35850...1.2 KiB
/wp-content/plugins/dezeen-time-since/assets/js/jquery.ti...2.6 KiB151 ms
/wp-content/plugins/dezeen-geo-targeting/assets/js/dezeen...297 B
www.dezeen.com/wp-content/plugins/dezeen-services/assets/js/widget.js?ver=1.2.0589 B151 ms
/wp-content/plugins/wp-parsely/build/loader.js?ver=ecf948...1.4 KiB
/d/assets/js/min/modern_header-min.js?ver=ed35850729ab3f1...2.1 KiB167 ms
/wp-content/plugins/dezeen-time-since/assets/js/dezeen-ti...2.1 KiB
cdn.parsely.com/keys/dezeen.com/p.js?ver=3.22.022.2 KiB1.4 s
dezeenhq.disqus.com/count.js1.5 KiB839 ms

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: 806 ms
URLTime Spent
dezeen.com/806 ms
www.dezeen.com/0.0 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

ElementLayout shift score
body.home > div.page-wrap > ::before body.home > div.page-wrap > ::before
0.255
body.home > div.page-wrap > ::before body.home > div.page-wrap > ::before
0.057

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.

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.

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 Evaluation3.9 s
Other1.3 s
Style & Layout1.2 s
Script Parsing & Compilation494 ms
Parse HTML & CSS213 ms
Garbage Collection94 ms
Rendering81 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
Subscribe form > div#newsletter-step-1 > div.sidebar-newsletter-image > img
www.dezeen.com/wp-content/themes/2016dezeen/assets/img/edificio@2x.jpg

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

Optimize DOM size
LCP breakdown
Modern HTTP
Optimize viewport for mobile
Minify CSS
Minify JavaScript
User Timing marks and measures 18 user timings
Avoid long main-thread tasks 20 long tasks found
Avoid non-composited animations 10 animated elements found
Page didn't prevent back/forward cache restoration
Network Requests
Network Round Trip Times 50 ms
Server Backend Latencies 210 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Initial server response time was short Root document took 40 ms
INP breakdown
82

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

ARIA dialog elements without accessible names may prevent screen readers users from discerning the purpose of these elements. Learn how to make ARIA dialog elements more accessible.

Why this matters

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

Source: MDN Permissions-Policy

Failing Elements
Subscribe to a Dezeen Newsletter today! body.home > div#om-aenc8hv4nnktzoz5bxwa > div#om-aenc8hv4nnktzoz5bxwa-optin

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.

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
Learn more div.fc-dialog-content > div.fc-dialog-scrollable-content > button.fc-faq-header > span.fc-faq-label

These are opportunities to improve the legibility of your content.

Navigation

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
News li.carousel_block_1 > a > div.carousel-true-title > h4
News li.carousel_block_1 > a > div.carousel-true-title > h4

These are opportunities to improve keyboard navigation in your application.

Names and labels

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
li.feature-story > article > header > a li.feature-story > article > header > a

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.

Tables and lists

Screen readers have a specific way of announcing lists. Ensuring proper list structure aids screen reader output. Learn more about proper list structure.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Architecture Brutalist Korea book News Trump triumphal arch News Capsule … div#main-content > div.featured-articles-top > aside.carousel-wrap > ul.carousel
Promotion XL Extralight debuts stone-like tote bag at Milan design week Promot… div#main-content > div.page-columns > main.left-column > ul.main-story-list
Architecture Brutalist Korea book News Trump triumphal arch News Capsule … div#main-content > aside.carousel-bottom > aside.carousel-wrap > ul.carousel

Screen readers require list items (`<li>`) to be contained within a parent `<ul>`, `<ol>` or `<menu>` to be announced properly. Learn more about proper list structure.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
News Capsule non-payment allegations ul.carousel > div.slick-list > div.slick-track > li.carousel_block_1
News BIG Nashville arts centre ul.carousel > div.slick-list > div.slick-track > li.carousel_block_1
News Capsule non-payment allegations ul.carousel > div.slick-list > div.slick-track > li.carousel_block_1
News BIG Nashville arts centre ul.carousel > div.slick-list > div.slick-track > li.carousel_block_1

These are opportunities to improve the experience of reading tabular or list data using 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]` 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
Input buttons have discernible text.
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.
ARIA attributes are used as specified for the element's role
`[aria-hidden="true"]` elements do not contain focusable descendents
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
No element has a `[tabindex]` value greater than 0
Touch targets have sufficient size and spacing.
Document has a main landmark.
Deprecated ARIA roles were not used
Uses ARIA roles only on compatible elements
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 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 type="image">` elements have `[alt]` text
Links are distinguishable without relying on color.
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.
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.
77

Best Practices

General

Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / WarningSource
SharedStorage
StorageType.persistent is deprecated. Please use standardized navigator.storage instead.
Fledge

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
Error with Permissions-Policy header: Parse of permissions policy failed because of errors reported by structured header parser.
Failed to load resource: the server responded with a status of 403 ()
Failed to load resource: the server responded with a status of 403 ()
Failed to load resource: the server responded with a status of 404 ()
Manifest fetch from https://www.dezeen.com/wp-content/themes/2016dezeen/assets/img/favicons/dezeen/site.webmanifest failed, code 403
Manifest fetch from https://www.dezeen.com/wp-content/themes/2016dezeen/assets/img/favicons/dezeen/site.webmanifest failed, code 403
Uses HTTPS
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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