Lighthouse Mobile

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

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Detailed Report

Audit breakdown by category with detailed findings.

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.

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.

URL	Est Savings
m.media-amazon.com/images/S/sash/-w6hwcDxlefrOYI.woff2	110 ms
m.media-amazon.com/images/S/sash/gyrV-mLs7VcgiFC.woff2	110 ms
m.media-amazon.com/images/S/sash/8AuIu4whVB5EMoJ.woff2	110 ms
m.media-amazon.com/images/S/sash/MexTn601PAhMvAn.woff2	110 ms
m.media-amazon.com/images/S/sash/rlTCFdyUZFR9mQI.woff2	110 ms
m.media-amazon.com/images/S/sash/ukoYNzKrqDRxhTq.woff2	110 ms
m.media-amazon.com/images/S/sash/1yLvxs7jafx7AW$.woff2	110 ms
m.media-amazon.com/images/S/sash/YixBCot3QJnxh4p.woff2	105 ms
m.media-amazon.com/images/S/sash/Dv1WQ5DdeMS5qP7.woff2	105 ms
m.media-amazon.com/images/S/sash/2SazJx$EeTHfhMN.woff2	105 ms
m.media-amazon.com/images/S/sash/ozb5-CLHQWI6Soc.woff2	105 ms
m.media-amazon.com/images/S/sash/KwhNPG8Jz-Vz2X7.woff2	105 ms
m.media-amazon.com/images/S/sash/lZemoC3awOEEzLR.woff2	105 ms
m.media-amazon.com/images/S/sash/NvWNxKhmDbgI1lq.woff2	105 ms
m.media-amazon.com/images/S/sash/1Ep1kWVX5g73xrY.woff2	105 ms
m.media-amazon.com/images/S/sash/pnZF3$c0rgepEUt.woff2	105 ms
m.media-amazon.com/images/S/sash/Wdqa3S7nfGc3Naj.woff2	105 ms
m.media-amazon.com/images/S/sash/VjTR4RqBzY0mUYx.woff2	95 ms
m.media-amazon.com/images/S/sash/pDxWAF1pBB0dzGB.woff2	70 ms
m.media-amazon.com/images/S/sash/KFPk-9IF4FqAqY-.woff2	65 ms
m.media-amazon.com/images/S/sash/WOnTLzkiaEccV7F.woff2	65 ms

Each subpart has specific improvement strategies. Ideally, most of the LCP time should be spent on loading the resources, not within delays.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:label label:Subpart valueType:text] map[key:duration label:Duration valueType:ms]]

items: [map[duration:491.491 label:Time to first byte subpart:timeToFirstByte] map[duration:2573.903 label:Resource load delay subpart:resourceLoadDelay] map[duration:35.041 label:Resource load duration subpart:resourceLoadDuration] map[duration:34.364 label:Element render delay subpart:elementRenderDelay]]

lhId: page-0-IMG

nodeLabel: All things beauty

path: 1,HTML,4,BODY,0,DIV,42,DIV,0,DIV,0,DIV,1,UL,0,LI,0,SPAN,0,DIV,2,DIV,0,DIV,0,A,1,IMG

selector: div#CardInstanceMjtoCv9hNvolI0O1UM8D2Q > div._single-creative-card_style_windowDisplayContainer__18uaW > a.a-link-normal > img._single-creative-card_style_image__kEmO2

snippet: <img alt="All things beauty" src="https://m.media-amazon.com/images/I/61Ld77LHXQL._SX855_.jpg" aria-label="All things beauty" class="_single-creative-card_style_image__kEmO2" data-a-hires="https://m.media-amazon.com/images/I/61Ld77LHXQL._SX855_.jpg">

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: All things beauty

path: 1,HTML,4,BODY,0,DIV,42,DIV,0,DIV,0,DIV,1,UL,0,LI,0,SPAN,0,DIV,2,DIV,0,DIV,0,A,1,IMG

selector: div#CardInstanceMjtoCv9hNvolI0O1UM8D2Q > div._single-creative-card_style_windowDisplayContainer__18uaW > a.a-link-normal > img._single-creative-card_style_image__kEmO2

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

value: No additional origins are good candidates for preconnecting

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.

URL	Transfer Size	Duration
/images/I/01Pawi1rYeL.css?AUIClients/AmazonHomepageWindow...	1.1 KiB
/images/I/11pmzCB-rhL.css?AUIClients/AmazonEmberModernFon...	1.2 KiB
/images/I/41b0WuUEi7L.css?AUIClients/GWMWebAssets	6.1 KiB
/images/I/51G19spDCAL._RC\|41w5Jrt7mLL.css,01FcI3FsaiL.css...	11.7 KiB	166 ms
/images/I/51AuMXFXGYL._RC\|51waPb-h-9L.css,51IpuNHA9ZL.css...	12.6 KiB
/images/I/01+72+wCC9L.css?AUIClients/GlowToasterAssets	1.2 KiB
/images/I/41Q63wvCUzL.css?AUIClients/InternationalCustome...	4.9 KiB
/images/I/11i1DYEiaoL._RC\|01GaLSH4siL.css,51fMLkDdAPL.css...	36.8 KiB	333 ms
/images/I/21SmWNnUNnL._RC\|51flkNeC2kL.css_.css?AUIClients...	7.0 KiB	813 ms
/images/I/21NZdO3uFtL.js?AUIClients/GWMMetricsJS	3.3 KiB

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.

Request	Cache TTL	Transfer Size
/1/batch/1/OP/ATVPDKIKX0DER:136-6619317-1412328:CZWY9NXR7...	0.0 ms	150 B
/1/batch/1/OP/ATVPDKIKX0DER:136-6619317-1412328:CZWY9NXR7...	0.0 ms	150 B
/1/batch/1/OP/ATVPDKIKX0DER:136-6619317-1412328:CZWY9NXR7...	0.0 ms	149 B
/1/batch/1/OP/ATVPDKIKX0DER:136-6619317-1412328:CZWY9NXR7...	0.0 ms	149 B
/1/batch/1/OP/ATVPDKIKX0DER:136-6619317-1412328:CZWY9NXR7...	0.0 ms	149 B
/1/batch/1/OP/ATVPDKIKX0DER:136-6619317-1412328:CZWY9NXR7...	0.0 ms	149 B
/1/batch/1/OP/ATVPDKIKX0DER:136-6619317-1412328:CZWY9NXR7...	0.0 ms	149 B
/1/batch/1/OP/ATVPDKIKX0DER:136-6619317-1412328:CZWY9NXR7...	0.0 ms	149 B
/1/batch/1/OP/ATVPDKIKX0DER:136-6619317-1412328:CZWY9NXR7...	0.0 ms	149 B
/1/batch/1/OP/ATVPDKIKX0DER:136-6619317-1412328:CZWY9NXR7...	0.0 ms	149 B
/1/batch/1/OP/ATVPDKIKX0DER:136-6619317-1412328:CZWY9NXR7...	0.0 ms	149 B
/1/batch/1/OP/ATVPDKIKX0DER:136-6619317-1412328:CZWY9NXR7...	0.0 ms	149 B
/1/batch/1/OP/ATVPDKIKX0DER:136-6619317-1412328:CZWY9NXR7...	0.0 ms	149 B
/1/batch/1/OP/ATVPDKIKX0DER:136-6619317-1412328:CZWY9NXR7...	0.0 ms	149 B
/1/batch/1/OP/ATVPDKIKX0DER:136-6619317-1412328:CZWY9NXR7...	0.0 ms	149 B
/1/batch/1/OP/ATVPDKIKX0DER:136-6619317-1412328:CZWY9NXR7...	0.0 ms	149 B
/1/batch/1/OP/ATVPDKIKX0DER:136-6619317-1412328:CZWY9NXR7...	0.0 ms	148 B
/rd/uedata?rid=CZWY9NXR7V2HXCC48MRT&sid=136-6619317-14123...	0.0 ms	71 B
/rd/uedata?rid=CZWY9NXR7V2HXCC48MRT&sid=136-6619317-14123...	0.0 ms	71 B

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.

	URL	Resource Size	Est Savings
All things beauty `div#CardInstanceMjtoCv9hNvolI0O1UM8D2Q > div._single-creative-card_style_windowDisplayContainer__18uaW > a.a-link-normal > img._single-creative-card_style_image__kEmO2`	m.media-amazon.com/images/I/61Ld77LHXQL._SX855_.jpg	106.8 KiB	57.0 KiB
Kitchen must-haves `div#CardInstancexyOnS8e-UPiSuhL-Rk7Nvw > div._single-creative-card_style_windowDisplayContainer__18uaW > a.a-link-normal > img._single-creative-card_style_image__kEmO2`	m.media-amazon.com/images/I/51l7ZOsRo7L._SX855_.jpg	60.7 KiB	35.2 KiB
div.icp-container-mobile > div#icp-touch-link-language > a.icp-language-link > div.icp-nav-globe-img-2 `div.icp-container-mobile > div#icp-touch-link-language > a.icp-language-link > div.icp-nav-globe-img-2`	m.media-amazon.com/images/S/sash/MAbi1rCjQI9H2y0.png	44.3 KiB	35.0 KiB
Looking for Amazon Spain? Click here to shop on Amazon.es `div.gwm-Card > a.a-link-normal > div._billboard-card_regularStyle_gwm-BillboardCard--cropped__g2nZu > img`	m.media-amazon.com/images/I/51Uwkw2W8BL._SR1242,249_.jpg	29.8 KiB	19.6 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: 1.0 s

URL	Time Spent
amazon.com/	1.0 s
www.amazon.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 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: 780 ms 152.5 KiB

URL	Transfer Size	Est Savings
/images/I/11I0WXrZVoL._RC\|11Y+5x+kkTL.js,518IfuPC2lL.js,1...	94.6 KiB	64.9 KiB
/images/I/81uCbtQgoZL._RC\|31ScU9YhQuL.js,01wcltxKR5L.js,4...	58.7 KiB	35.6 KiB
/images/I/01QvReFeJyL._RC\|01kC46b9vjL.js,81tZ4+n2afL.js_....	44.4 KiB	28.2 KiB
m.media-amazon.com/images/I/81kCF8wuZEL.js?AUIClients/FWCIMAssets	56.3 KiB	23.8 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.

URL	Total CPU Time	Script Evaluation	Script Parse
www.amazon.com/	2.2 s	665 ms	87 ms
/images/I/11I0WXrZVoL._RC\|11Y+5x+kkTL.js,518IfuPC2lL.js,1...	833 ms	543 ms	30 ms
Unattributable	574 ms	33 ms	0.0 ms
m.media-amazon.com/images/I/21NZdO3uFtL.js?AUIClients/GWMMetricsJS	106 ms	11 ms	0.9 ms
/images/I/81uCbtQgoZL._RC\|31ScU9YhQuL.js,01wcltxKR5L.js,4...	98 ms	63 ms	22 ms
m.media-amazon.com/images/I/61xJcNKKLXL.js?AUIClients/AmazonUIjQuery	96 ms	55 ms	8.7 ms
/images/I/51jC0T3AfxL._RC\|4134jecY+uL.js_.js?AUIClients/N...	77 ms	55 ms	5.6 ms
/images/I/01QvReFeJyL._RC\|01kC46b9vjL.js,81tZ4+n2afL.js_....	75 ms	54 ms	20 ms

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.

Category	Time Spent
Script Evaluation	1.7 s
Other	1.3 s
Style & Layout	541 ms
Rendering	477 ms
Script Parsing & Compilation	229 ms
Parse HTML & CSS	180 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.

Estimated savings: 0.0 ms 145.6 KiB

URL	Transfer Size	Est Savings
/images/I/11i1DYEiaoL._RC\|01GaLSH4siL.css,51fMLkDdAPL.css...	53.2 KiB	51.4 KiB
._billboard-card_style_wd-backdrop-data__1znxG{height:100%} …	24.6 KiB	24.2 KiB
._interactive-footer-card_style_container__3GKmA{grid-gap:8px;display:grid;gap:8px; … } …	20.9 KiB	20.9 KiB
._sign-in-v2_style_heading__1mnEu{font-size:20px} …	17.5 KiB	17.4 KiB
/images/I/51AuMXFXGYL._RC\|51waPb-h-9L.css,51IpuNHA9ZL.css...	22.1 KiB	16.0 KiB
/images/I/51G19spDCAL._RC\|41w5Jrt7mLL.css,01FcI3FsaiL.css...	15.9 KiB	15.8 KiB

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
Looking for Amazon Spain? Click here to shop on Amazon.es `div.gwm-Card > a.a-link-normal > div._billboard-card_regularStyle_gwm-BillboardCard--cropped__g2nZu > img`	m.media-amazon.com/images/I/51Uwkw2W8BL._SR1242,249_.jpg
Desktops `div._multi-category-card_style_container__3HW_J > div > a.a-link-normal > img._multi-category-card_image_round-corners__22iOW`	m.media-amazon.com/images/I/31aw+nYkUmL._SR140,140_.jpg
Laptops `div._multi-category-card_style_container__3HW_J > div > a.a-link-normal > img._multi-category-card_image_round-corners__22iOW`	m.media-amazon.com/images/I/31hqkoNqvTL._SR140,140_.jpg
Hard Drives `div._multi-category-card_style_container__3HW_J > div > a.a-link-normal > img._multi-category-card_image_round-corners__22iOW`	m.media-amazon.com/images/I/217Arq+nObL._SR140,140_.jpg
PC Accessories `div._multi-category-card_style_container__3HW_J > div > a.a-link-normal > img._multi-category-card_image_round-corners__22iOW`	m.media-amazon.com/images/I/312z6VjcSmL._SR140,140_.jpg
Headphones `div._multi-category-card_style_container__3HW_J > div > a.a-link-normal > img._multi-category-card_image_round-corners__22iOW`	m.media-amazon.com/images/I/417NhPd56zL._SR140,140_.jpg
Tablets `div._multi-category-card_style_container__3HW_J > div > a.a-link-normal > img._multi-category-card_image_round-corners__22iOW`	m.media-amazon.com/images/I/41dMYqsSuGL._SR140,140_.jpg
Gaming `div._multi-category-card_style_container__3HW_J > div > a.a-link-normal > img._multi-category-card_image_round-corners__22iOW`	m.media-amazon.com/images/I/41gk0-eoy4L._SR140,140_.jpg
Speakers `div._multi-category-card_style_container__3HW_J > div > a.a-link-normal > img._multi-category-card_image_round-corners__22iOW`	m.media-amazon.com/images/I/41uuEMle6TL._SR140,140_.jpg
fitness clothing `div._multi-category-card_style_container__3HW_J > div > a.a-link-normal > img._multi-category-card_image_round-corners__22iOW`	m.media-amazon.com/images/I/41CutKsrzNL._SR140,140_.jpg
fitness trackers `div._multi-category-card_style_container__3HW_J > div > a.a-link-normal > img._multi-category-card_image_round-corners__22iOW`	m.media-amazon.com/images/I/41RKKF01YxL._SR140,140_.jpg
fitness equipment `div._multi-category-card_style_container__3HW_J > div > a.a-link-normal > img._multi-category-card_image_round-corners__22iOW`	m.media-amazon.com/images/I/41MjMjLh9BL._SR140,140_.jpg
shop deals `div._multi-category-card_style_container__3HW_J > div > a.a-link-normal > img._multi-category-card_image_round-corners__22iOW`	m.media-amazon.com/images/I/41idnUIEIZL._SR140,140_.jpg

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

●Max Potential First Input Delay 100 ms

●Layout shift culprits

●Optimize DOM size

●Forced reflow

●Modern HTTP

●Optimize viewport for mobile

●Minify CSS

●Minify JavaScript

●Avoids enormous network payloads Total size was 2,000 KiB

●Avoid long main-thread tasks 6 long tasks found

●Avoid non-composited animations 2 animated elements found

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 100 ms

●Server Backend Latencies 180 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 180 ms

●Avoid large layout shifts 15 layout shifts found

○INP breakdown

○User Timing marks and measures

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

Each ARIA `role` supports a specific subset of `aria-*` attributes. Mismatching these invalidates the `aria-*` attributes. Learn how to match ARIA attributes to their roles.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Search Amazon `form#nav-search-form > div.nav-fill > div.nav-search-field > input#nav-search-keywords`
Shop all things beauty Shop kitchen must-haves Gifts for techie Mom Start looki… `div#gwm-Deck > div#gwm-Deck-cf > div#gwm-window-container > ul#gwm-window`

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.

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
Conditions of Use `div#nav-ftr > ul.nav-ftr-horiz > li.nav-li > a.nav-a`
Privacy Notice `div#nav-ftr > ul.nav-ftr-horiz > li.nav-li > a.nav-a`
Consumer Health Data Privacy Disclosure `div#nav-ftr > ul.nav-ftr-horiz > li.nav-li > a.nav-a`
Your Ads Privacy Choices `div#nav-ftr > ul.nav-ftr-horiz > li.nav-li > a.nav-a`

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
0 `div#navbar > div#nav-logobar > div.nav-right > a#nav-button-cart`
Desktops Desktops `div.a-cardui-body > div._multi-category-card_style_container__3HW_J > div > a.a-link-normal`
Laptops Laptops `div.a-cardui-body > div._multi-category-card_style_container__3HW_J > div > a.a-link-normal`
Hard Drives Hard Drives `div.a-cardui-body > div._multi-category-card_style_container__3HW_J > div > a.a-link-normal`
PC Accessories PC Accessories `div.a-cardui-body > div._multi-category-card_style_container__3HW_J > div > a.a-link-normal`
Headphones Headphones `div.a-cardui-body > div._multi-category-card_style_container__3HW_J > div > a.a-link-normal`
Tablets Tablets `div.a-cardui-body > div._multi-category-card_style_container__3HW_J > div > a.a-link-normal`
Gaming Gaming `div.a-cardui-body > div._multi-category-card_style_container__3HW_J > div > a.a-link-normal`
Speakers Speakers `div.a-cardui-body > div._multi-category-card_style_container__3HW_J > div > a.a-link-normal`
Clothing Clothing `div.a-cardui-body > div._multi-category-card_style_container__3HW_J > div > a.a-link-normal`
Trackers Trackers `div.a-cardui-body > div._multi-category-card_style_container__3HW_J > div > a.a-link-normal`
Equipment Equipment `div.a-cardui-body > div._multi-category-card_style_container__3HW_J > div > a.a-link-normal`
Deals Deals `div.a-cardui-body > div._multi-category-card_style_container__3HW_J > div > a.a-link-normal`

○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-hidden="true"]` is not present on the document `<body>`

●`[role]`s have all required `[aria-*]` attributes

●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

●`[role]` values are valid

●`[aria-*]` attributes have valid values

●`[aria-*]` attributes are valid and not misspelled

●Buttons have an accessible name

●Image elements have `[alt]` attributes

●Input buttons have discernible text.

●Form elements have associated labels

●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.

●ARIA attributes are used as specified for the element's role

●Elements with `role="dialog"` or `role="alertdialog"` have accessible names.

●`[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 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

●No element has a `[tabindex]` value greater than 0

●`[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

●Image elements do not have `[alt]` attributes that are redundant text.

●Identical links have the same purpose.

○`[accesskey]` values are unique

○`button`, `link`, and `menuitem` elements have accessible names

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○Elements with the `role=text` attribute do not have focusable descendents.

○ARIA toggle fields have accessible names

○ARIA `tooltip` elements have accessible names

○ARIA `treeitem` elements have accessible names

○The page contains a heading, skip link, or landmark region

○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.

○Definition list items are wrapped in `<dl>` elements

○ARIA IDs are unique

○No form fields have multiple labels

○`<frame>` or `<iframe>` elements have a title

○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.

○`<input type="image">` elements have `[alt]` text

○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.

○`<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

○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.

Best Practices

User Experience

Image display dimensions should match natural aspect ratio. Learn more about image aspect ratio.

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Aspect Ratio (Displayed)	Aspect Ratio (Actual)
Beauty `div._interactive-footer-card_style_container__3GKmA > div > a.a-link-normal > img._interactive-footer-card_image_round-corners__22iOW`	m.media-amazon.com/images/I/71wBEshTCUL._SR180,67_.png	100 x 67 (1.49)	180 x 67 (2.69)
Home and Kitchen `div._interactive-footer-card_style_container__3GKmA > div > a.a-link-normal > img._interactive-footer-card_image_round-corners__22iOW`	m.media-amazon.com/images/I/61uornUdm-L._SR180,67_.png	100 x 67 (1.49)	180 x 67 (2.69)
Sports and Outdoors `div._interactive-footer-card_style_container__3GKmA > div > a.a-link-normal > img._interactive-footer-card_image_round-corners__22iOW`	m.media-amazon.com/images/I/71sUjeGHWdL._SR180,67_.png	100 x 67 (1.49)	180 x 67 (2.69)
Electronics `div._interactive-footer-card_style_container__3GKmA > div > a.a-link-normal > img._interactive-footer-card_image_round-corners__22iOW`	m.media-amazon.com/images/I/71JhsiGGjqL._SR180,67_.png	100 x 67 (1.49)	180 x 67 (2.69)
Outdoor Clothing `div._interactive-footer-card_style_container__3GKmA > div > a.a-link-normal > img._interactive-footer-card_image_round-corners__22iOW`	m.media-amazon.com/images/I/71OooRMu+tL._SR180,67_.png	100 x 67 (1.49)	180 x 67 (2.69)
Pet Supplies `div._interactive-footer-card_style_container__3GKmA > div > a.a-link-normal > img._interactive-footer-card_image_round-corners__22iOW`	m.media-amazon.com/images/I/7166hIvPMnL._SR180,67_.png	100 x 67 (1.49)	180 x 67 (2.69)

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 / Warning	Source
SharedStorage	www.amazon.com/ line 1452, col 2048

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.

Source	Description
images-na.ssl-images-amazon.com/images/I/31LYmZEs45L.js line 3, col 388	`Error logged with the Track&Report JS errors API(http://tiny/1covqr6l8/wamazindeClieUserJava): {"m":"Late loading module @m/mash","csm":"v5 ueLogError callee","logLevel":"WARN","attribution":"MIX","pageURL":"https://www.amazon.com/","s":[],"t":3352} [object Object]`
www.amazon.com/tt/i	`Failed to load resource: net::ERR_TRUST_TOKEN_OPERATION_FAILED`

●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

●Serves images with appropriate resolution

●Page has the HTML doctype

●Properly defines charset

●No issues in the `Issues` panel in Chrome Devtools

●Ensure CSP is effective against XSS attacks

●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

○Use a strong HSTS policy

○Mitigate clickjacking with XFO or CSP

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
body.a-m-us > div#hmenu-container > div#hmenu-canvas > a#hmenu-back-to-top `body.a-m-us > div#hmenu-container > div#hmenu-canvas > a#hmenu-back-to-top`

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`