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Lighthouse Mobile

· 0 checks — Mobile Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.
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GRADE
FIX
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REVIEW
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PASS
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Detailed Report

Audit breakdown by category with detailed findings.

38

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.

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.

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: Two young children sitting on a playroom floor playing with a tambourine and xy…
path: 1,HTML,1,BODY,0,DIV,0,DIV,1,DIV,2,DIV,0,DIV,0,MAIN,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,UL,0,LI,0,DIV,0,DIV,0,DIV,0,IMG
selector: div.card-wrapper > div.aspect-ratio--object > div.w-100 > img#PrismAdjustableCardCarousel-contentZone3-LYdPCyut-card-0
snippet: <img loading="lazy" class="w-100 absolute absolute--fill" width="auto" height="auto" src="https://i5.walmartimages.com/dfw/4ff9c6c9-b55c/k2-_2155b92d-5ee5-46a1-8efa…" alt="Two young children sitting on a playroom floor playing with a tambourine a…" id="PrismAdjustableCardCarousel-contentZone3-LYdPCyut-card-0" elementtiming="home-hero-image">

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

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
Image shows a black Kumho Crugen HP27 all-season passenger tire on a textured l… div.card-wrapper > div.aspect-ratio--object > div.w-100 > img#TriplePack-contentZone10-large-LYdPCyut
/dfw/4ff9c6c9-8501/k2-_99fe28f0-7f6e-4678-8f73-f95cb3bd57...358.9 KiB328.5 KiB

These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.

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.

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: 768 ms
URLTime Spent
walmart.com/768 ms
www.walmart.com/0.0 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

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: 300 ms 57.7 KiB
URLTransfer SizeEst Savings
/dfw/63fd9f59-ce1b/4d7a6799-f363-44bc-810b-932065135360/v...66.9 KiB57.7 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: 750 ms 1.6 MiB
URLTransfer SizeEst Savings
/dfw/63fd9f59-ce1b/4d7a6799-f363-44bc-810b-932065135360/v...609.6 KiB562.3 KiB
/dfw/63fd9f59-ce1b/4d7a6799-f363-44bc-810b-932065135360/v...617.1 KiB354.8 KiB
/dfw/63fd9f59-ce1b/4d7a6799-f363-44bc-810b-932065135360/v...97.2 KiB90.4 KiB
www.walmart.com/px/PXu6b0qd2S/init.js150.4 KiB82.1 KiB
/dfw/63fd9f59-ce1b/4d7a6799-f363-44bc-810b-932065135360/v...63.4 KiB52.7 KiB
/dfw/63fd9f59-ce1b/4d7a6799-f363-44bc-810b-932065135360/v...42.9 KiB42.7 KiB
/dfw/63fd9f59-ce1b/4d7a6799-f363-44bc-810b-932065135360/v...42.9 KiB40.3 KiB
/dfw/63fd9f59-ce1b/4d7a6799-f363-44bc-810b-932065135360/v...40.5 KiB36.8 KiB
/dfw/63fd9f59-ce1b/4d7a6799-f363-44bc-810b-932065135360/v...36.0 KiB34.6 KiB
/dfw/63fd9f59-ce1b/4d7a6799-f363-44bc-810b-932065135360/v...37.2 KiB32.6 KiB
/dfw/63fd9f59-ce1b/4d7a6799-f363-44bc-810b-932065135360/v...41.5 KiB31.9 KiB
/dfw/63fd9f59-ce1b/4d7a6799-f363-44bc-810b-932065135360/v...31.8 KiB31.6 KiB
/dfw/63fd9f59-ce1b/4d7a6799-f363-44bc-810b-932065135360/v...44.5 KiB29.4 KiB
/dfw/63fd9f59-ce1b/4d7a6799-f363-44bc-810b-932065135360/v...47.2 KiB29.1 KiB
/dfw/63fd9f59-ce1b/4d7a6799-f363-44bc-810b-932065135360/v...31.8 KiB28.5 KiB
/dfw/63fd9f59-ce1b/4d7a6799-f363-44bc-810b-932065135360/v...48.6 KiB24.7 KiB
/dfw/63fd9f59-ce1b/4d7a6799-f363-44bc-810b-932065135360/v...23.1 KiB22.1 KiB
/dfw/63fd9f59-ce1b/4d7a6799-f363-44bc-810b-932065135360/v...24.6 KiB21.9 KiB
/dfw/63fd9f59-ce1b/4d7a6799-f363-44bc-810b-932065135360/v...26.1 KiB20.2 KiB
/dfw/63fd9f59-ce1b/4d7a6799-f363-44bc-810b-932065135360/v...22.0 KiB20.1 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 Evaluation5.8 s
Other1.9 s
Script Parsing & Compilation944 ms
Style & Layout499 ms
Rendering154 ms
Parse HTML & CSS147 ms
Garbage Collection127 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
Pages with cache-control:no-store header cannot enter back/forward cache.Actionable
Chrome Password Manager was present upon navigating away.Pending browser support
Pages whose main resource has cache-control:no-store cannot enter back/forward cache.Not actionable
Back/forward cache is disabled because some JavaScript network request received resource with Cache-Control: no-store header.Not actionable

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
Walmart Plus div.w-two-thirds > div.flex > div.flex > img.mr2
/dfw/4ff9c6c9-9e6a/k2-_6791ea8f-5d70-401b-ad01-b726d27e0c...

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
Minify JavaScript
User Timing marks and measures 45 user timings
Avoid long main-thread tasks 20 long tasks found
Network Requests
Network Round Trip Times 20 ms
Server Backend Latencies 90 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Initial server response time was short Root document took 80 ms
Avoid large layout shifts 2 layout shifts found
INP breakdown
Avoid non-composited animations
96

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.

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
section > div.absolute > div.f7 > a section > div.absolute > div.f7 > 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.

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
0 $0.00 li.undefined > div.relative > div.cart-button > button#cart-button-header
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
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
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
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
No element has a `[tabindex]` value greater than 0
Touch targets have sufficient size and spacing.
Heading elements appear in a sequentially-descending order
Skip links are focusable.
Document has a main landmark.
Deprecated ARIA roles were not used
Identical links have the same purpose.
`[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
Elements with the `role=text` attribute do not have focusable descendents.
ARIA toggle fields have accessible names
ARIA `tooltip` elements have accessible names
ARIA `treeitem` elements have accessible names
The page contains a heading, skip link, or landmark region
`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Definition list items are wrapped in `<dl>` elements
ARIA IDs are unique
No form fields have multiple labels
`<frame>` or `<iframe>` elements have a title
`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
Input buttons have discernible text.
`<input type="image">` elements have `[alt]` text
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.
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.
Uses ARIA roles only on compatible elements
Image elements do not have `[alt]` attributes that are redundant text.
Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.
`<td>` elements in a large `<table>` have one or more table headers.
73

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.

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
www.walmart.com/ line 12, col 0
Executing inline script violates the following Content Security Policy directive 'script-src 'self' 'strict-dynamic' 'wasm-unsafe-eval' *.1worldsync.com *.accenture.com *.babylist.com *.buywith.com *.cloudfront.net *.cloudinary.com *.cnetcontent.com *.digital-cloud.medallia.com *.flix360.com *.flix360.io *.fullstory.com *.kampyle.co *.kampyle.com *.ksckreate.net *.px-cloud.net *.quantummetric.com *.richcontext.com *.salsify.com *.syndigo.cloud *.syndigo.com *.talkshop.live *.thestable.com *.wal.co *.walmart-customcards.com *.walmart.com:* *.walmart.net *.walmartimages.com *.zeekit.www.walmart.com aroptical-scan.wal-mart.com aroptical-wasm.walmart.com assets-jpcust.jwpsrv.com assets.optiwise.ai b.affil.walmart.com b.affiliates.walmart.com b.identity.walmart.com b.native-checkout.prod.affiliates.walmart.com b.photos3.walmart.com b.www.walmart.com beacon.walmart.com bp.www.walmart.com ccsprodus1.blob.core.windows.net cdn.jwplayer.com connect.facebook.net content.etilize.com content.jwplatform.com d3nkfb7815bs43.cloudfront.net d3np41mctoibfu.cloudfront.net drfdisvc.walmart.com ls.chatid.com maps.googleapis.com media.flixcar.com media.flixfacts.com media.sku.ninja mmwm-scan-prod.centralus.cloudapp.azure.com photorankstatics-a.akamaihd.net rackcdn.com s.xlgmedia.com salsify-ecdn.com ssl.p.jwpcdn.com videos-cloudfront.jwpsrv.com ws.cnetcontent.com wss://api.talkshop.live www.ezdia.com www.recaptcha.net 'nonce-L5_hN8diY7KGtSF0''. Either the 'unsafe-inline' keyword, a hash ('sha256-ZD3An/otgpFLZ8f+26WHrgOMTdcGTUTl9Dj6n6MinpY='), or a nonce ('nonce-...') is required to enable inline execution. The action has been blocked.
Loading the script 'https://www.walmart.com/akam/13/24ad55d4' violates the following Content Security Policy directive: "script-src 'self' 'strict-dynamic' 'wasm-unsafe-eval' *.1worldsync.com *.accenture.com *.babylist.com *.buywith.com *.cloudfront.net *.cloudinary.com *.cnetcontent.com *.digital-cloud.medallia.com *.flix360.com *.flix360.io *.fullstory.com *.kampyle.co *.kampyle.com *.ksckreate.net *.px-cloud.net *.quantummetric.com *.richcontext.com *.salsify.com *.syndigo.cloud *.syndigo.com *.talkshop.live *.thestable.com *.wal.co *.walmart-customcards.com *.walmart.com:* *.walmart.net *.walmartimages.com *.zeekit.www.walmart.com aroptical-scan.wal-mart.com aroptical-wasm.walmart.com assets-jpcust.jwpsrv.com assets.optiwise.ai b.affil.walmart.com b.affiliates.walmart.com b.identity.walmart.com b.native-checkout.prod.affiliates.walmart.com b.photos3.walmart.com b.www.walmart.com beacon.walmart.com bp.www.walmart.com ccsprodus1.blob.core.windows.net cdn.jwplayer.com connect.facebook.net content.etilize.com content.jwplatform.com d3nkfb7815bs43.cloudfront.net d3np41mctoibfu.cloudfront.net drfdisvc.walmart.com ls.chatid.com maps.googleapis.com media.flixcar.com media.flixfacts.com media.sku.ninja mmwm-scan-prod.centralus.cloudapp.azure.com photorankstatics-a.akamaihd.net rackcdn.com s.xlgmedia.com salsify-ecdn.com ssl.p.jwpcdn.com videos-cloudfront.jwpsrv.com ws.cnetcontent.com wss://api.talkshop.live www.ezdia.com www.recaptcha.net 'nonce-L5_hN8diY7KGtSF0'". Note that 'strict-dynamic' is present, so host-based allowlisting is disabled. Note that 'script-src-elem' was not explicitly set, so 'script-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 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
Detected JavaScript libraries
Page has valid source maps
Redirects HTTP traffic to HTTPS
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.

Crawling and Indexing

Search engines may use `href` attributes on links to crawl websites. Ensure that the `href` attribute of anchor elements links to an appropriate destination, so more pages of the site can be discovered. Learn how to make links crawlable

Why this matters

Performance issues directly impact user engagement and conversion rates.

Uncrawlable Link
div#__next > div.flex > span.bg-secondary > a.o-0 div#__next > div.flex > span.bg-secondary > a.o-0

To appear in search results, crawlers need access to your app.

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
robots.txt is valid
Image elements have `[alt]` attributes
Document has a valid `hreflang`
Document has a valid `rel=canonical`

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