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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
/content/dam/sandisk/en-us/assets/home-page/fifa-memoryca...28800.0 s2.9 MiB
/content/dam/sandisk/en-us/assets/home-page/enterprisesn8...28800.0 s2.0 MiB
/content/dam/sandisk/en-us/assets/home-page/enterprisesn8...28800.0 s2.0 MiB
/content/dam/sandisk/en-us/assets/home-page/memoryman-des...28800.0 s219.5 KiB
assets.adobedtm.com/012e215e77ba/241525ea565f/launch-bc7943f031b6.min.js3600.0 s139.6 KiB
/content/dam/sandisk/en-us/assets/home-page/stunts-skinny...28800.0 s153.6 KiB
connect.facebook.net/en_US/fbevents.js1200.0 s96.6 KiB
/etc.clientlibs/sd-static/designs/clientlibs/chatbox_comm...0.0 ms82.6 KiB
/content/dam/sandisk/en-us/assets/products/memory-cards/c...28800.0 s95.3 KiB
/content/dam/sandisk/en-us/assets/home-page/compare-exter...28800.0 s90.2 KiB
static.sandisk.com/etc.clientlibs/sd-static/designs/clientlibs/vue-global.min.js0.0 ms52.2 KiB
/content/dam/sandisk/en-us/assets/home-page/sn7100x-tile....28800.0 s83.2 KiB
static.sandisk.com/etc.clientlibs/sd-static/designs/fonts/pilat/Pilat-Bold.woff20.0 ms43.2 KiB
static.sandisk.com/etc.clientlibs/sd-static/designs/fonts/pilat/Pilat-Book.woff20.0 ms42.3 KiB
static.sandisk.com/etc.clientlibs/sd-static/designs/fonts/pilat/Pilat-Demi.woff20.0 ms42.3 KiB
/signals/config/497928019999559?v=2.9.303&r=stable&domain...1200.0 s44.8 KiB
/etc.clientlibs/sd-static/designs/fonts/PPFraktion/PPFrak...0.0 ms39.0 KiB
/content/dam/sandisk/en-us/assets/home-page/tradeup-green...28800.0 s63.1 KiB
/content/dam/sandisk/en-us/assets/products/embedded-flash...28800.0 s36.4 KiB
/content/dam/store/en-us/assets/products/usb-flash-drives...28800.0 s22.8 KiB
/etc.clientlibs/sd/designs/clientlibs/store-vue/home-page...591847.0 s125.4 KiB
/notice?domain=sandiskgdpr.com&c=teconsent&js=nj&noticeTy...3600.0 s14.0 KiB
/content/dam/store/en-us/assets/products/accessories/imag...28800.0 s15.7 KiB
/etc.clientlibs/sd-static/designs/clientlibs/chatbox_comm...0.0 ms4.5 KiB
www.sandisk.com/content/dam/sandisk/en-us/chatbot/images/arrow-right.png28800.0 s6.1 KiB
/content/dam/store/en-us/assets/home-page/brand-logos/san...28800.0 s5.5 KiB
/content/dam/sandisk/en-us/assets/nav/footer/sandisk-hori...28800.0 s5.3 KiB
/libs/wcm/foundation/components/page/responsive.lc-dd681e...160838.0 s7.2 KiB
www.sandisk.com/.rum/@adobe/helix-rum-js@%5E2/dist/micro.js3600.0 s2.6 KiB
www.sandisk.com/content/dam/sandisk/en-us/chatbot/images/SD_Close_Icon.svg28800.0 s3.3 KiB
/content/dam/sandisk/en-us/chatbot/images/SmallCircle_Cha...28800.0 s3.2 KiB
www.sandisk.com/content/dam/sandisk/en-us/chatbot/images/SD_Header_Logo_v1.svg28800.0 s3.0 KiB
/content/dam/sandisk/en-us/chatbot/images/Latest_SD_Agent...28800.0 s2.9 KiB
/012e215e77ba/241525ea565f/f83ce7bd2aef/RC927e2e0c62e34f6...3600.0 s1.9 KiB
www.sandisk.com/content/dam/sandisk/en-us/chatbot/images/Chat_Icon.svg28800.0 s2.4 KiB
www.sandisk.com/content/dam/sandisk/en-us/assets/sys/webnext/webnext.css28800.0 s2.4 KiB
www.sandisk.com/content/dam/sandisk/en-us/chatbot/images/ShareFile_Icon.svg28800.0 s2.3 KiB
www.sandisk.com/content/dam/sandisk/en-us/chatbot/images/AttachFile_Icon.svg28800.0 s2.2 KiB
/content/dam/sandisk/en-us/chatbot/images/ShareImageVideo...28800.0 s2.2 KiB
www.sandisk.com/content/dam/sandisk/en-us/chatbot/images/SD_Minimize_Icon.svg28800.0 s2.2 KiB
/012e215e77ba/241525ea565f/f83ce7bd2aef/RCe3f4e5122198442...3600.0 s774 B
/012e215e77ba/241525ea565f/f83ce7bd2aef/RC9e6732e2873f452...3600.0 s766 B
/012e215e77ba/241525ea565f/f83ce7bd2aef/RCef72f8b47b64494...3600.0 s756 B
/012e215e77ba/241525ea565f/f83ce7bd2aef/RCc76f11d66f2740c...3600.0 s754 B
/012e215e77ba/241525ea565f/f83ce7bd2aef/RCb3d58f4c7db5459...3600.0 s677 B
/012e215e77ba/241525ea565f/f83ce7bd2aef/RC5fc4e220bced462...3600.0 s607 B
/012e215e77ba/241525ea565f/f83ce7bd2aef/RC3e0a5bd225884bf...3600.0 s597 B
/012e215e77ba/241525ea565f/f83ce7bd2aef/RC0acf13daee3d4da...3600.0 s580 B
/012e215e77ba/241525ea565f/f83ce7bd2aef/RC984b589e81a54db...3600.0 s464 B
/tr/?id=497928019999559&ev=PageView&dl=https%3A%2F%2Fwww....0.0 ms19 B
/tr/?id=497928019999559&ev=ViewContent&dl=https%3A%2F%2Fw...0.0 ms16 B
/tr/?id=497928019999559&ev=ViewContent&dl=https%3A%2F%2Fw...0.0 ms16 B
/content/dam/sandisk/en-us/assets/home-page/fifa-memoryca...28800.0 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.

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:65.314 source:map[column:43 line:49 type:source-location url: 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:10.101 source:map[column:206 line:419 type:source-location url:https://www.sandisk.com/etc.clientlibs/sd/designs/clientlibs/store-vue/home-page.lc-25a1d2731f37b1c6c24310a59c4c7ad2-lc.min.js urlProvider:network]] map[reflowTime:56.74 source:map[column:2766 line:20 type:source-location url:https://static.sandisk.com/etc.clientlibs/sd-static/designs/clientlibs/vue-global.min.js urlProvider:network]] map[reflowTime:0.325 source:map[column:267637 line:58 type:source-location url:https://static.sandisk.com/etc.clientlibs/sd-static/designs/clientlibs/chatbox_commerce.min.js urlProvider:network]] map[reflowTime:28.75 source:map[column:151180 line:58 type:source-location url:https://static.sandisk.com/etc.clientlibs/sd-static/designs/clientlibs/chatbox_commerce.min.js urlProvider:network]] map[reflowTime:19.839 source:map[column:151052 line:58 type:source-location url:https://static.sandisk.com/etc.clientlibs/sd-static/designs/clientlibs/chatbox_commerce.min.js urlProvider:network]] map[reflowTime:6.349 source:map[column:39996 line:58 type:source-location url:https://static.sandisk.com/etc.clientlibs/sd-static/designs/clientlibs/chatbox_commerce.min.js urlProvider:network]] map[reflowTime:10.051 source:map[column:277754 line:58 type:source-location url:https://static.sandisk.com/etc.clientlibs/sd-static/designs/clientlibs/chatbox_commerce.min.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-DIV
nodeLabel: div.aem-Grid > div.section > section.bg-color > div.aem-section-bgimage
path: 1,HTML,1,BODY,3,SECTION,0,DIV,0,DIV,0,DIV,1,SECTION,0,DIV,2,DIV,0,DIV,0,DIV,0,DIV,0,DIV,1,SECTION,0,DIV,0,DIV,0,SECTION,0,DIV,1,DIV,0,UL,2,LI,1,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,1,SECTION,0,DIV
selector: div.aem-Grid > div.section > section.bg-color > div.aem-section-bgimage
snippet: <div data-bgimage="/content/dam/sandisk/en-us/assets/home-page/tradeup-green-desktop.jpg" class="aem-section-bgimage section-459729630806 section-bg absolute pin-t pin-b p…">

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.

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: 214 ms
URLTime Spent
sandisk.com/214 ms
www.sandisk.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

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 Evaluation2.8 s
Other1.4 s
Style & Layout642 ms
Rendering232 ms
Parse HTML & CSS121 ms
Script Parsing & Compilation104 ms
Garbage Collection87 ms

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.

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

●Layout shift culprits
●Optimize DOM size
●Improve image delivery
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●User Timing marks and measures 7 user timings
●Avoid long main-thread tasks 10 long tasks found
●Avoid non-composited animations 29 animated elements found
●Image elements have explicit `width` and `height`
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 10 ms
●Server Backend Latencies 40 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 20 ms
●Avoid large layout shifts 4 layout shifts found
○INP breakdown
75

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
SSDs div.slide > nav.navContainer > ul.list-reset > li#navSectionsTab1
Memory Cards div.slide > nav.navContainer > ul.list-reset > li#navSectionsTab2
USB Flash div.slide > nav.navContainer > ul.list-reset > li#navSectionsTab3
Embedded & Removable div.slide > nav.navContainer > ul.list-reset > li#navSectionsTab4
Accessories div.slide > nav.navContainer > ul.list-reset > li#navSectionsTab5
Shop div.slide > nav.navContainer > ul.list-reset > li#navSectionsTab6
Support div.slide > nav.navContainer > ul.list-reset > li#navSectionsTab7
Sign In div.slide > nav.navContainer > ul.list-reset > li#profile

Assistive technologies, like screen readers, can't interpret ARIA attributes with invalid values. Learn more about valid values for ARIA attributes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Search Close div.flex > div.corpSearch > div#searchSummaryView > div.hero-input

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
close icon div#truste-consent-track > div.bb-wrapper > div.truste-icon-box > button#truste-consent-close
ul.list-reset > li#profile > div.flex > button.dropDownItem ul.list-reset > li#profile > div.flex > button.dropDownItem

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.

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
Manage Cookie Preferences div.bb-wrapper > div#truste-consent-content > div#truste-consent-buttons > button#truste-show-consent
Reject All Non-Essential Cookies div.bb-wrapper > div#truste-consent-content > div#truste-consent-buttons > button#truste-consent-required
Accept All Cookies div.bb-wrapper > div#truste-consent-content > div#truste-consent-buttons > button#truste-consent-button

These are opportunities to improve the legibility of your content.

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
SSDs Memory Cards USB Flash Embedded & Removable Accessories Shop Support div.container > div.slide > nav.navContainer > ul.list-reset

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Navigation

A value greater than 0 implies an explicit navigation ordering. Although technically valid, this often creates frustrating experiences for users who rely on assistive technologies. Learn more about the `tabindex` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
close icon div#truste-consent-track > div.bb-wrapper > div.truste-icon-box > button#truste-consent-close
Privacy Statement div.bb-wrapper > div#truste-consent-content > div#truste-consent-text > a#truste-privacy-button
Cookie Statement div.bb-wrapper > div#truste-consent-content > div#truste-consent-text > a#truste-cookie-button

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
About Us div.-mx-1 > ul.list-reset > li > a.p-1
Responsibility div.-mx-1 > ul.list-reset > li > a.p-1
Investors div.-mx-1 > ul.list-reset > li > a.p-1
Newsroom div.-mx-1 > ul.list-reset > li > a.p-1
Locations div.-mx-1 > ul.list-reset > li > a.p-1
Careers div.-mx-1 > ul.list-reset > li > a.p-1
Contact Us div.-mx-1 > ul.list-reset > li > a.p-1
My Account div.-mx-1 > ul.list-reset > li.show-for-b2c > a.p-1
Product Portfolio div.-mx-1 > ul.list-reset > li > a.p-1
Top Deals div.-mx-1 > ul.list-reset > li.show-for-b2c > a.p-1
Clearance div.-mx-1 > ul.list-reset > li.show-for-b2c > a.p-1
Financing Options div.-mx-1 > ul.list-reset > li.show-for-b2c > a.p-1
Distributors & Resellers div.-mx-1 > ul.list-reset > li.show-for-b2c > a.p-1
Shopping FAQs div.-mx-1 > ul.list-reset > li > a.p-1
Topics Hub div.-mx-1 > ul.list-reset > li > a.p-1
Business Benefits div.-mx-1 > ul.list-reset > li > a.p-1
Sandisk Credit div.-mx-1 > ul.list-reset > li.hide-for-cz > a.p-1
Business Rewards div.-mx-1 > ul.list-reset > li.hide-for-ca > a.p-1
Data Recovery div.-mx-1 > ul.list-reset > li.show-for-b2c > a.p-1
Recycle Program div.-mx-1 > ul.list-reset > li.show-for-b2c > a.p-1
Offer Programs div.-mx-1 > ul.list-reset > li.show-for-b2c > a.p-1
Affiliate Program div.-mx-1 > ul.list-reset > li.show-for-b2c > a.p-1
Ambassador Program div.-mx-1 > ul.list-reset > li.show-for-b2c > a.p-1
Get Help div.-mx-1 > ul.list-reset > li > a.p-1
Warranty Policy div.-mx-1 > ul.list-reset > li > a.p-1
Return Policy div.-mx-1 > ul.list-reset > li > a.p-1
Resource Library div.-mx-1 > ul.list-reset > li > a.p-1
Product Security div.-mx-1 > ul.list-reset > li > a.p-1

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
USB STORAGE & SSDS iPhone 17 Series-Compatible USB Flash Drives & SSDs div.aem-Grid > div.section > section.bg-color > a.block
EN / US div.root > div.aem-Grid > div.button > a.btn
○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 are valid and not misspelled
●Image elements have `[alt]` attributes
●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.
●`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
●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
●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
●`[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
●ARIA IDs are unique
●`<video>` elements contain a `<track>` element with `[kind="captions"]`
●Uses ARIA roles only on compatible elements
○`[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 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
○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
○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.
○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.
81

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
AttributionReporting

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 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 browser errors logged to the console
●No issues in the `Issues` panel in Chrome Devtools
●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
92

SEO

These checks ensure that your page is following basic search engine optimization advice. There are many additional factors Lighthouse does not score here that may affect your search ranking, including performance on Core Web Vitals. Learn more about Google Search Essentials.

Content Best Practices

Descriptive link text helps search engines understand your content. Learn how to make links more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Format your HTML in a way that enables crawlers to better understand your app’s content.

○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 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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