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Lighthouse Desktop

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

Audit breakdown by category with detailed findings.

76

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.icloud.com/system/icloud.com/2612Build21/fpo@1x.mp486400.0 s1.2 MiB
www.icloud.com/system/icloud.com/2612Build21/en-us/main.js86400.0 s764.0 KiB
/system/icloud.com/2612Build21/7cb9ecdad2b384754de3947325...86400.0 s203.5 KiB
www.icloud.com/system/icloud.com/2612Build21/en-us/RootComponentRoute.js86400.0 s87.6 KiB
/system/icloud.com/2612Build21/06b68855764eb0e23f269ed4ef...86400.0 s66.8 KiB
www.icloud.com/system/icloud.com/2612Build21/en-us/main.css86400.0 s46.8 KiB
/system/icloud.com/2612Build21/0e4e931e06552e87f2fdff2832...86400.0 s45.6 KiB
www.icloud.com/system/icloud.com/2612Build21/en-us/vendors~RootComponentRoute.js86400.0 s31.9 KiB
appleid.cdn-apple.com/appleauth/static/jsapi/authService.latest.min.js1800.0 s14.4 KiB
www.icloud.com/system/icloud.com/2612Build21/en-us/2.main.css86400.0 s23.7 KiB
www.icloud.com/system/icloud.com/2612Build21/fpo@1x.mp486400.0 s20.2 KiB
www.icloud.com/system/icloud.com/2612Build21/wallpaper_dark.svg86400.0 s1.9 KiB
www.icloud.com/system/icloud.com/2612Build21/wallpaper.svg86400.0 s1.8 KiB
www.icloud.com/system/icloud.com/2612Build21/en-us/6.main.css86400.0 s1.2 KiB
www.icloud.com/system/icloud.com/2612Build21/fpo@1x.mp486400.0 s0 B

Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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
Graphic depicting the icons for various iCloud+ benefits, including up to 12TB … div.tiles > div.landing-page-tile > div.tile-icon > img
/system/icloud.com/2612Build21/7cb9ecdad2b384754de3947325...208.4 KiB189.4 KiB
Collection of icons for apps available on iCloud.com, including Mail, Find My, … div.tiles > div.landing-page-tile > div.tile-icon > img
/system/icloud.com/2612Build21/06b68855764eb0e23f269ed4ef...66.4 KiB55.6 KiB
div.hero-wrapper > div.landing-page-icloud-hero > div.clouds > img div.hero-wrapper > div.landing-page-icloud-hero > div.clouds > img
/system/icloud.com/2612Build21/0e4e931e06552e87f2fdff2832...47.1 KiB18.4 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-3-VIDEO
nodeLabel: div.landing-page > div.hero-wrapper > div.icloud-animated-hero > video
path: 1,HTML,1,BODY,0,DIV,0,UI-MAIN-PANE,1,DIV,1,DIV,0,DIV,0,DIV,1,MAIN,0,DIV,0,DIV,0,DIV,0,VIDEO
selector: div.landing-page > div.hero-wrapper > div.icloud-animated-hero > video
snippet: <video src="https://www.icloud.com/system/icloud.com/2612Build21/fpo@1x.mp4" width="430" height="388" autoplay="" playsinline="" loop="" x-webkit-airplay="deny">

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

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: 510 ms
URLTime Spent
me.com/510 ms
www.icloud.com/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.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

Diagnostics

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: 40 ms 35.2 KiB
URLTransfer SizeEst Savings
www.icloud.com/system/icloud.com/2612Build21/en-us/RootComponentRoute.js87.2 KiB27.7 KiB
www.icloud.com/system/icloud.com/2612Build21/en-us/vendors~RootComponentRoute.js31.5 KiB7.6 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: 480 ms 576.6 KiB
URLTransfer SizeEst Savings
www.icloud.com/system/icloud.com/2612Build21/en-us/main.js763.5 KiB511.8 KiB
www.icloud.com/system/icloud.com/2612Build21/en-us/RootComponentRoute.js87.2 KiB64.8 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.

Estimated savings: 0.0 ms 67.7 KiB
URLTransfer SizeEst Savings
www.icloud.com/system/icloud.com/2612Build21/en-us/main.css46.4 KiB44.6 KiB
www.icloud.com/system/icloud.com/2612Build21/en-us/2.main.css23.2 KiB23.2 KiB

Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer Size
www.icloud.com/system/icloud.com/2612Build21/fpo@1x.mp41.2 MiB
www.icloud.com/system/icloud.com/2612Build21/en-us/main.js764.0 KiB
www.icloud.com/system/icloud.com/2612Build21/fpo@1x.mp4572.3 KiB
/system/icloud.com/2612Build21/en-us/vendors~Routes-HomeP...346.6 KiB
/system/icloud.com/2612Build21/7cb9ecdad2b384754de3947325...203.5 KiB
www.icloud.com/system/icloud.com/2612Build21/en-us/Routes-HomePageRoute.js128.1 KiB
www.icloud.com/system/icloud.com/2612Build21/en-us/RootComponentRoute.js87.6 KiB
/system/icloud.com/2612Build21/06b68855764eb0e23f269ed4ef...66.8 KiB
www.icloud.com/system/icloud.com/2612Build21/en-us/main.css46.8 KiB
/system/icloud.com/2612Build21/0e4e931e06552e87f2fdff2832...45.6 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
●Forced reflow
●LCP breakdown
●Modern HTTP
●Render blocking requests
●Optimize viewport for mobile
●Minify CSS
●User Timing marks and measures 19 user timings
●JavaScript execution time 0.3 s
●Minimizes main-thread work 0.5 s
●Avoid long main-thread tasks 1 long task found
●Image elements have explicit `width` and `height`
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 100 ms
●Server Backend Latencies 150 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 20 ms
○INP breakdown
○Avoid non-composited animations
○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
●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.
●`button`, `link`, and `menuitem` elements have accessible names
●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
●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 have a discernible name
●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
●`<video>` elements contain a `<track>` element with `[kind="captions"]`
○`[accesskey]` values are unique
○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
○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
○Buttons have an accessible name
○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>`).
○List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
○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
○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.
○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.
88

Best Practices

Browser Compatibility

A character encoding declaration is required. It can be done with a `<meta>` tag in the first 1024 bytes of the HTML or in the Content-Type HTTP response header. Learn more about declaring the character encoding.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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
/setup/ws/1/validate?clientBuildNumber=2612Build21&client...
Failed to load resource: the server responded with a status of 421 (Misdirected Request)

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.

URLMap URL
www.icloud.com/system/icloud.com/2612Build21/en-us/RootComponentRoute.jswww.icloud.com/system/icloud.com/2612Build21/en-us/RootComponentRoute.js.map
www.icloud.com/system/icloud.com/2612Build21/en-us/main.jswww.icloud.com/system/icloud.com/2612Build21/en-us/main.js.map
www.icloud.com/system/icloud.com/2612Build21/en-us/vendors~RootComponentRoute.js/system/icloud.com/2612Build21/en-us/vendors~RootComponen...
●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
●Ensure CSP is effective against XSS attacks
●Ensure proper origin isolation with COOP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
○Redirects HTTP traffic to HTTPS
○Use a strong HSTS policy
○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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