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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.

50

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
www.apple.com/wss/fonts/SF-Pro/v4/SFPro.woff2856.0 s405.4 KiB
/image/thumb/Features221/v4/52/ad/54/52ad5476-fc3e-6ba4-3...636837.0 s202.1 KiB
/image/thumb/Features221/v4/5d/b6/4e/5db64e55-a0c9-3009-f...556980.0 s163.4 KiB
/image/thumb/Features211/v4/77/28/5a/77285afb-13dd-52be-7...627818.0 s135.0 KiB
/image/thumb/Features221/v4/07/a1/bc/07a1bcbb-3fb7-90ac-2...662297.0 s134.1 KiB
/image/thumb/Features211/v4/46/f3/6f/46f36fa7-21a0-ce89-5...588447.0 s119.7 KiB
/image/thumb/Features211/v4/b0/37/b0/b037b015-0183-47a2-b...639645.0 s106.4 KiB
apps.apple.com/assets/fonts/locale-switcher/ArabicUIText-Regular-subset.woff2300.0 s9.2 KiB
apps.apple.com/assets/fonts/locale-switcher/PingFangTC-Regular-subset.woff2300.0 s8.6 KiB
/image/thumb/Features211/v4/c4/a9/b8/c4a9b8ba-5729-1153-5...611251.0 s80.4 KiB
/image/thumb/PurpleSource211/v4/3c/32/36/3c323655-b1c4-f2...233428.0 s7.5 KiB
/image/thumb/Purple221/v4/ec/9e/7c/ec9e7c26-2fab-36f5-7f8...234125.0 s7.2 KiB
/image/thumb/PurpleSource221/v4/b4/ad/cb/b4adcbd1-1924-eb...243060.0 s7.3 KiB
/image/thumb/PurpleSource211/v4/ef/f2/88/eff28849-c3c4-c6...249560.0 s7.0 KiB
/image/thumb/PurpleSource221/v4/6c/55/5d/6c555d5e-58a2-8e...260900.0 s7.3 KiB
/image/thumb/PurpleSource221/v4/bf/ab/2e/bfab2eb5-9e44-7e...237456.0 s5.9 KiB
/image/thumb/PurpleSource211/v4/54/07/b3/5407b3ab-922f-5e...271423.0 s6.6 KiB
/assets/fonts/locale-switcher/AppleSDGothicNeo-Regular-su...300.0 s1.2 KiB
www.apple.com/wss/fonts?families=SF+Pro,v4%7CSF+Pro+Icons,v1&display=swap983.0 s1.1 KiB
/image/thumb/Features221/v4/dc/5c/56/dc5c5645-7397-d0f8-b...545383.0 s4.7 KiB
/image/thumb/Features211/v4/8f/12/b1/8f12b11b-6d84-be31-4...553185.0 s4.8 KiB
/image/thumb/Features211/v4/78/61/b9/7861b9d5-8999-25f6-3...560047.0 s4.5 KiB
/image/thumb/Features211/v4/6f/ab/1a/6fab1a47-81a1-2602-1...590215.0 s4.9 KiB
/image/thumb/Features211/v4/20/ca/47/20ca479c-d4ef-49b7-8...595433.0 s4.8 KiB
/image/thumb/Features211/v4/56/4d/c3/564dc32e-ba9f-2447-4...648288.0 s4.8 KiB
apps.apple.com/assets/icons/sidebar-searchfield-close-on-light.svg300.0 s425 B
/image/thumb/Features211/v4/e4/ea/0a/e4ea0a97-9d12-cd3f-c...560457.0 s1.9 KiB
/image/thumb/Features211/v4/4a/b4/95/4ab4951e-bcd2-df10-7...558628.0 s1.6 KiB
/image/thumb/Features211/v4/7c/75/34/7c7534e2-4d79-2c32-f...603353.0 s1.7 KiB

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.

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:4.105 source:map[column:1.609685e+06 line:2 type:source-location url:https://apps.apple.com/assets/index~JZsYzCL4Hi.js 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:140.776 source:map[type:text value:[unattributed]]] map[reflowTime:4.105 source:map[column:1.60969e+06 line:1 type:source-location url:https://apps.apple.com/assets/index~JZsYzCL4Hi.js urlProvider:network]] map[reflowTime:45.875 source:map[column:295309 line:1 type:source-location url:https://apps.apple.com/assets/index~JZsYzCL4Hi.js 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-IMG
nodeLabel: div.artwork-container > div.artwork-component > picture.svelte-1fla0gl > img.artwork-component__contents
path: 1,HTML,1,BODY,0,DIV,0,DIV,1,DIV,0,MAIN,1,DIV,1,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,PICTURE,2,IMG
selector: div.artwork-container > div.artwork-component > picture.svelte-1fla0gl > img.artwork-component__contents
snippet: <img alt="" class="artwork-component__contents artwork-component__image svelte-1fla0gl" loading="lazy" src="https://is1-ssl.mzstatic.com/image/thumb/Features221/v4/52/ad/54/52ad5476-…" role="presentation" decoding="async" width="525" height="700" fetchpriority="auto" style="opacity: 1;">

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
div.artwork-container > div.artwork-component > picture.svelte-1fla0gl > img.artwork-component__contents div.artwork-container > div.artwork-component > picture.svelte-1fla0gl > img.artwork-component__contents
/image/thumb/Features221/v4/52/ad/54/52ad5476-fc3e-6ba4-3...201.0 KiB165.0 KiB
div.artwork-container > div.artwork-component > picture.svelte-1fla0gl > img.artwork-component__contents div.artwork-container > div.artwork-component > picture.svelte-1fla0gl > img.artwork-component__contents
/image/thumb/Features221/v4/5d/b6/4e/5db64e55-a0c9-3009-f...162.5 KiB133.4 KiB
div.artwork-container > div.artwork-component > picture.svelte-1fla0gl > img.artwork-component__contents div.artwork-container > div.artwork-component > picture.svelte-1fla0gl > img.artwork-component__contents
/image/thumb/Features211/v4/77/28/5a/77285afb-13dd-52be-7...133.9 KiB109.2 KiB
div.artwork-container > div.artwork-component > picture.svelte-1fla0gl > img.artwork-component__contents div.artwork-container > div.artwork-component > picture.svelte-1fla0gl > img.artwork-component__contents
/image/thumb/Features221/v4/07/a1/bc/07a1bcbb-3fb7-90ac-2...133.0 KiB108.5 KiB
div.artwork-container > div.artwork-component > picture.svelte-1fla0gl > img.artwork-component__contents div.artwork-container > div.artwork-component > picture.svelte-1fla0gl > img.artwork-component__contents
/image/thumb/Features211/v4/46/f3/6f/46f36fa7-21a0-ce89-5...118.7 KiB97.4 KiB
div.artwork-container > div.artwork-component > picture.svelte-1fla0gl > img.artwork-component__contents div.artwork-container > div.artwork-component > picture.svelte-1fla0gl > img.artwork-component__contents
/image/thumb/Features211/v4/b0/37/b0/b037b015-0183-47a2-b...105.3 KiB85.9 KiB
div.artwork-container > div.artwork-component > picture.svelte-1fla0gl > img.artwork-component__contents div.artwork-container > div.artwork-component > picture.svelte-1fla0gl > img.artwork-component__contents
/image/thumb/Features211/v4/c4/a9/b8/c4a9b8ba-5729-1153-5...79.3 KiB64.7 KiB
div.app-icon > div.artwork-component > picture.svelte-1fla0gl > img.artwork-component__contents div.app-icon > div.artwork-component > picture.svelte-1fla0gl > img.artwork-component__contents
/image/thumb/PurpleSource211/v4/3c/32/36/3c323655-b1c4-f2...6.4 KiB4.9 KiB
div.app-icon > div.artwork-component > picture.svelte-1fla0gl > img.artwork-component__contents div.app-icon > div.artwork-component > picture.svelte-1fla0gl > img.artwork-component__contents
/image/thumb/PurpleSource221/v4/b4/ad/cb/b4adcbd1-1924-eb...6.2 KiB4.7 KiB
div.app-icon > div.artwork-component > picture.svelte-1fla0gl > img.artwork-component__contents div.app-icon > div.artwork-component > picture.svelte-1fla0gl > img.artwork-component__contents
/image/thumb/PurpleSource221/v4/6c/55/5d/6c555d5e-58a2-8e...6.2 KiB4.7 KiB
div.app-icon > div.artwork-component > picture.svelte-1fla0gl > img.artwork-component__contents div.app-icon > div.artwork-component > picture.svelte-1fla0gl > img.artwork-component__contents
/image/thumb/Purple221/v4/ec/9e/7c/ec9e7c26-2fab-36f5-7f8...6.1 KiB4.6 KiB
div.app-icon > div.artwork-component > picture.svelte-1fla0gl > img.artwork-component__contents div.app-icon > div.artwork-component > picture.svelte-1fla0gl > img.artwork-component__contents
/image/thumb/PurpleSource211/v4/ef/f2/88/eff28849-c3c4-c6...5.9 KiB4.4 KiB
div.app-icon > div.artwork-component > picture.svelte-1fla0gl > img.artwork-component__contents div.app-icon > div.artwork-component > picture.svelte-1fla0gl > img.artwork-component__contents
/image/thumb/PurpleSource211/v4/54/07/b3/5407b3ab-922f-5e...5.5 KiB4.0 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: 789 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Diagnostics

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 38.1 KiB
URLTransfer SizeEst Savings
apps.apple.com/assets/index~DjN5s_dKMP.css47.1 KiB38.1 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: 3.6 s 635.5 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

CategoryTime Spent
Script Evaluation3.0 s
Other2.8 s
Style & Layout854 ms
Rendering178 ms
Parse HTML & CSS154 ms
Script Parsing & Compilation86 ms
Garbage Collection81 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reasonFailure type
The page was evicted from the cache because an active network connection received too much data. Chrome limits the amount of data that a page may receive while cached.Not actionable

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 5.4 KiB
URLTransfer SizeEst Savings
js-cdn.music.apple.com/hls.js/2.820.0/rtc.js/rtc.js19.8 KiB5.4 KiB

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

Layout shift culprits
Optimize DOM size
Font display
LCP breakdown
Modern HTTP
Optimize viewport for mobile
Minify CSS
Avoid long main-thread tasks 20 long tasks found
Image elements have explicit `width` and `height`
Network Requests
Network Round Trip Times 40 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 10 ms
Avoid large layout shifts 1 layout shift found
INP breakdown
User Timing marks and measures
Avoid non-composited animations
91

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

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
Today Games Apps Arcade Search Categories Categories Photo & Video Health & Fit… div.navigation-container > div.navigation-wrapper > nav.navigation > div#navigation

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.

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
Summon Silver Wolf LV.999 in Honkai: Star Rail a > div.content-container > div.title-container > h3.title

These are opportunities to improve keyboard navigation in your application.

Best practices

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
United States footer.svelte-15fwn9j > div.footer-secondary-slot > div.button-container > button.link
Español (México) div.button-container > ul.svelte-n776hm > li.svelte-n776hm > a.svelte-n776hm
العربية div.button-container > ul.svelte-n776hm > li.svelte-n776hm > a.svelte-n776hm
Русский div.button-container > ul.svelte-n776hm > li.svelte-n776hm > a.svelte-n776hm
简体中文 div.button-container > ul.svelte-n776hm > li.svelte-n776hm > a.svelte-n776hm
Français (France) div.button-container > ul.svelte-n776hm > li.svelte-n776hm > a.svelte-n776hm
한국어 div.button-container > ul.svelte-n776hm > li.svelte-n776hm > a.svelte-n776hm
Português (Brazil) div.button-container > ul.svelte-n776hm > li.svelte-n776hm > a.svelte-n776hm
繁體中文 (台灣) div.button-container > ul.svelte-n776hm > li.svelte-n776hm > a.svelte-n776hm
Support div.footer-contents > ul.svelte-15fwn9j > li.svelte-15fwn9j > a.svelte-15fwn9j

These items highlight common accessibility best practices.

Visible text labels that do not match the accessible name can result in a confusing experience for screen reader users. Learn more about accessible names.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
MAJOR UPDATE Summon Silver Wolf LV.999 in Honkai: Star Rail A fresh look for … div.today-card > div.wrapper > div.information-layer > a
GET STARTED Bundle Apple TV and Peacock Save over 30% on a monthly subscripti… div.today-card > div.wrapper > div.information-layer > a
MAJOR UPDATE Buddy Up in Good Coffee, Great Coffee Make friends with baristas… div.today-card > div.wrapper > div.information-layer > a
MAJOR UPDATE Race Through F1 Clash’s New Season Can you overtake the competit… div.today-card > div.wrapper > div.information-layer > a
WORLD PREMIERE Battle and Build in Arknights: Endfield Seek fortune in a fier… div.today-card > div.wrapper > div.information-layer > a
GAMES WE LOVE Let’s Roll! The dice decide your fate in dungeon-crawling duels. div.today-card > div.wrapper > div.information-layer > a
GAMES WE LOVE Training Day Go full steam into a hazardous—and hilarious—new w… div.today-card > div.wrapper > div.information-layer > a
GAMES WE LOVE An Ale of a Tale Little heroes go on big adventures in this dar… div.today-card > div.wrapper > div.information-layer > a
GAMES WE LOVE Face Your Fears Survive monsters, traps, and more in this moody… div.today-card > div.wrapper > div.information-layer > a
GAMES WE LOVE Nowhere to Run Guide a band of outcasts through treacherous was… div.today-card > div.wrapper > div.information-layer > a
FROM THE EDITORS Your Spring Games Guide High-stakes combat, cozy cultivation… div.today-card > div.wrapper > div.information-layer > a
GAMES WE LOVE It’s a Mad Dash! Now that’s what we call rush hour. div.today-card > div.wrapper > div.information-layer > a
GAME OF THE DAY Shape woods, water, and wildlife into a thriving natural world. div.today-card > div.wrapper > div.information-layer > a
APP OF THE DAY Transform your dollars into positive environmental change. div.today-card > div.wrapper > div.information-layer > a
GET STARTED 5 YouTube Tips and Tricks How to get the most out of the streamin… div.today-card > div.wrapper > div.information-layer > a
WORLD PREMIERE Roll Into Coin Master – Board Adventure Make your own luck in … div.today-card > div.wrapper > div.information-layer > a
MAJOR UPDATE Summon Linnea in Genshin Impact The Luna VI update is here. div.today-card > div.wrapper > div.information-layer > a
WHAT TO WATCH The Best Movies and Series on Paramount+ div.today-card > div.wrapper > div.information-layer > a
MAJOR UPDATE Try WhatsApp’s Redesigned CarPlay Experience Effortlessly see co… div.today-card > div.wrapper > div.information-layer > a
MAJOR UPDATE Get Pokémon TCG Pocket’s Mega Shinies Mega Charizard X ex, Mega … div.today-card > div.wrapper > div.information-layer > a
GAMES WE LOVE Get a Clue Solve crafty crimes in a sprawling city. div.today-card > div.wrapper > div.information-layer > a
GAMES WE LOVE Are You a Mind Reader? Think alike to win in this party-game fa… div.today-card > div.wrapper > div.information-layer > a
MAJOR UPDATE Edit Photos Faster With VSCO’s AI Lab New tools that’ll take you… div.today-card > div.wrapper > div.information-layer > a
LIMITED TIME Build DIY Gifts for Earth Day Visit the Post Office for planet-f… div.today-card > div.wrapper > div.information-layer > a
WHAT TO WATCH Stream The Miniature Wife on Peacock Domestic strife reaches ne… div.today-card > div.wrapper > div.information-layer > a
MAJOR UPDATE Dress Up Your Streak Pet Explore accessories for your TikTok cha… div.today-card > div.wrapper > div.information-layer > a
NEW APP Stream Legendary Skateboarding Videos Epic footage from every era, al… div.today-card > div.wrapper > div.information-layer > a
LIVE EVENT Watch the New MLS Season on Apple TV Inter Miami CF’s first match … div.today-card > div.wrapper > div.information-layer > a
GAMES WE LOVE Save Your Rad Dad! Precise jumps, hilarious puns, and one tasty… div.today-card > div.wrapper > div.information-layer > a
GAMES WE LOVE Lost in Space Shoot, loot, and banter through an interstellar a… div.today-card > div.wrapper > div.information-layer > a
GAMES WE LOVE Catch My Drift Forge the ultimate starship—then fight to surviv… div.today-card > div.wrapper > div.information-layer > a
APPS WE LOVE Get Ready for Golden Hour Track sunsets, sunrises, and more. div.today-card > div.wrapper > div.information-layer > a
GAMES WE LOVE Go Deep Explore treacherous alien oceans to solve a mystery. div.today-card > div.wrapper > div.information-layer > a
APPS WE LOVE Discover Spots Recommended by Real Humans Find local places to r… div.today-card > div.wrapper > div.information-layer > a
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 use only permitted ARIA attributes
Elements with the `role=text` attribute do not have focusable descendents.
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
Document has a main landmark.
Deprecated ARIA roles were not used
`<video>` elements contain a `<track>` element with `[kind="captions"]`
`[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 an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
`[role]`s are contained by their required parent element
ARIA toggle fields have accessible names
ARIA `tooltip` elements have accessible names
ARIA `treeitem` elements have accessible names
The page contains a heading, skip link, or landmark region
`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Definition list items are wrapped in `<dl>` elements
ARIA IDs are unique
No form fields have multiple labels
`<frame>` or `<iframe>` elements have a title
`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
Input buttons have discernible text.
`<input type="image">` elements have `[alt]` text
Form elements have associated labels
The document does not use `<meta http-equiv="refresh">`
`<object>` elements have alternate text
Select elements have associated label elements.
Skip links are focusable.
No element has a `[tabindex]` value greater than 0
Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
`[lang]` attributes have a valid value
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.
Identical links have the same purpose.
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.
92

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
Loading a manifest from 'https://apps.apple.com/manifest.json' violates the following Content Security Policy directive: "default-src 'none'". Note that 'manifest-src' was not explicitly set, so 'default-src' is used as a fallback. The action has been blocked.
Loading a manifest from 'https://apps.apple.com/manifest.json' violates the following Content Security Policy directive: "default-src 'none'". Note that 'manifest-src' was not explicitly set, so 'default-src' is used as a fallback. The action has been blocked.

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
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
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
Redirects HTTP traffic to HTTPS
Mitigate clickjacking with XFO or CSP
Detected JavaScript libraries
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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