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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.

40

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
d1nruqhae353qc.cloudfront.net/primesignup/es/widget.js0.0 ms54.4 KiB
/images/G/01/payments-portal/r1/loading-4x._CB338200758_.gif3600.0 s15.4 KiB
/1/batch/1/OP/A1RKKUPIHCS9HS:520-6873033-8471757:QY0D8TH8...0.0 ms150 B
/1/batch/1/OP/A1RKKUPIHCS9HS:520-6873033-8471757:QY0D8TH8...0.0 ms150 B
/1/batch/1/OP/A1RKKUPIHCS9HS:520-6873033-8471757:QY0D8TH8...0.0 ms149 B
/1/batch/1/OP/A1RKKUPIHCS9HS:520-6873033-8471757:QY0D8TH8...0.0 ms149 B
/1/batch/1/OP/A1RKKUPIHCS9HS:520-6873033-8471757:QY0D8TH8...0.0 ms149 B
/1/batch/1/OP/A1RKKUPIHCS9HS:520-6873033-8471757:QY0D8TH8...0.0 ms149 B
/1/batch/1/OP/A1RKKUPIHCS9HS:520-6873033-8471757:QY0D8TH8...0.0 ms149 B
/1/batch/1/OP/A1RKKUPIHCS9HS:520-6873033-8471757:QY0D8TH8...0.0 ms149 B
/1/batch/1/OP/A1RKKUPIHCS9HS:520-6873033-8471757:QY0D8TH8...0.0 ms149 B
/1/batch/1/OP/A1RKKUPIHCS9HS:520-6873033-8471757:QY0D8TH8...0.0 ms149 B
/1/batch/1/OP/A1RKKUPIHCS9HS:520-6873033-8471757:QY0D8TH8...0.0 ms149 B
/1/batch/1/OP/A1RKKUPIHCS9HS:520-6873033-8471757:QY0D8TH8...0.0 ms149 B
/1/batch/1/OP/A1RKKUPIHCS9HS:520-6873033-8471757:QY0D8TH8...0.0 ms149 B
/1/batch/1/OP/A1RKKUPIHCS9HS:520-6873033-8471757:QY0D8TH8...0.0 ms149 B
/1/batch/1/OP/A1RKKUPIHCS9HS:520-6873033-8471757:QY0D8TH8...0.0 ms149 B
/1/batch/1/OP/A1RKKUPIHCS9HS:520-6873033-8471757:QY0D8TH8...0.0 ms149 B
/1/batch/1/OP/A1RKKUPIHCS9HS:520-6873033-8471757:QY0D8TH8...0.0 ms149 B
/1/batch/1/OP/A1RKKUPIHCS9HS:520-6873033-8471757:QY0D8TH8...0.0 ms149 B
/1/batch/1/OP/A1RKKUPIHCS9HS:520-6873033-8471757:QY0D8TH8...0.0 ms149 B
/1/batch/1/OP/A1RKKUPIHCS9HS:520-6873033-8471757:QY0D8TH8...0.0 ms149 B
/1/batch/1/OP/A1RKKUPIHCS9HS:520-6873033-8471757:QY0D8TH8...0.0 ms149 B
/1/batch/1/OP/A1RKKUPIHCS9HS:520-6873033-8471757:QY0D8TH8...0.0 ms148 B
/rd/uedata?rid=QY0D8TH88HASYGCA55DQ&sid=520-6873033-84717...0.0 ms71 B
/rd/uedata?rid=QY0D8TH88HASYGCA55DQ&sid=520-6873033-84717...0.0 ms71 B

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.

URLEst Savings
m.media-amazon.com/images/S/sash/rlTCFdyUZFR9mQI.woff280 ms
m.media-amazon.com/images/S/sash/lZemoC3awOEEzLR.woff275 ms
m.media-amazon.com/images/S/sash/NvWNxKhmDbgI1lq.woff275 ms
m.media-amazon.com/images/S/sash/1Ep1kWVX5g73xrY.woff275 ms
m.media-amazon.com/images/S/sash/Wdqa3S7nfGc3Naj.woff275 ms
m.media-amazon.com/images/S/sash/-w6hwcDxlefrOYI.woff275 ms
m.media-amazon.com/images/S/sash/gyrV-mLs7VcgiFC.woff275 ms
m.media-amazon.com/images/S/sash/8AuIu4whVB5EMoJ.woff275 ms
m.media-amazon.com/images/S/sash/MexTn601PAhMvAn.woff275 ms
m.media-amazon.com/images/S/sash/ukoYNzKrqDRxhTq.woff275 ms
m.media-amazon.com/images/S/sash/1yLvxs7jafx7AW$.woff275 ms
m.media-amazon.com/images/S/sash/KwhNPG8Jz-Vz2X7.woff270 ms
m.media-amazon.com/images/S/sash/ozb5-CLHQWI6Soc.woff250 ms
m.media-amazon.com/images/S/sash/VjTR4RqBzY0mUYx.woff235 ms
m.media-amazon.com/images/S/sash/2SazJx$EeTHfhMN.woff235 ms
m.media-amazon.com/images/S/sash/YixBCot3QJnxh4p.woff230 ms
m.media-amazon.com/images/S/sash/pDxWAF1pBB0dzGB.woff230 ms
m.media-amazon.com/images/S/sash/WOnTLzkiaEccV7F.woff230 ms
m.media-amazon.com/images/S/sash/pnZF3$c0rgepEUt.woff230 ms
m.media-amazon.com/images/S/sash/KFPk-9IF4FqAqY-.woff225 ms
m.media-amazon.com/images/S/sash/Dv1WQ5DdeMS5qP7.woff225 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:85.755 label:Time to first byte subpart:timeToFirstByte] map[duration:2481.23 label:Resource load delay subpart:resourceLoadDelay] map[duration:33.395 label:Resource load duration subpart:resourceLoadDuration] map[duration:25.992 label:Element render delay subpart:elementRenderDelay]]
lhId: page-0-IMG
nodeLabel: Your first delivery is FREE Click here to learn more
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#CardInstance1xHdkEbNsqzhBa6_AY4atg > div._single-creative-card_style_windowDisplayContainer__18uaW > a.a-link-normal > img._single-creative-card_style_image__kEmO2
snippet: <img alt="Your first delivery is FREE Click here to learn more" src="https://m.media-amazon.com/images/I/611mbhIZHAL._SX855_.jpg" aria-label="Your first delivery is FREE Click here to learn more" class="_single-creative-card_style_image__kEmO2" data-a-hires="https://m.media-amazon.com/images/I/611mbhIZHAL._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: Your first delivery is FREE Click here to learn more
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#CardInstance1xHdkEbNsqzhBa6_AY4atg > div._single-creative-card_style_windowDisplayContainer__18uaW > a.a-link-normal > img._single-creative-card_style_image__kEmO2
snippet: <img alt="Your first delivery is FREE Click here to learn more" src="https://m.media-amazon.com/images/I/611mbhIZHAL._SX855_.jpg" aria-label="Your first delivery is FREE Click here to learn more" class="_single-creative-card_style_image__kEmO2" data-a-hires="https://m.media-amazon.com/images/I/611mbhIZHAL._SX855_.jpg">

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.

URLTransfer SizeDuration
/images/I/01qv8AhC95L.css?AUIClients/AmazonEmberModernFon...1004 B
/images/I/01Pawi1rYeL.css?AUIClients/AmazonHomepageWindow...1.1 KiB
/images/I/41Q63wvCUzL.css?AUIClients/InternationalCustome...4.9 KiB
/images/I/01+72+wCC9L.css?AUIClients/GlowToasterAssets1.2 KiB
/images/I/51G19spDCAL._RC|41w5Jrt7mLL.css,01FcI3FsaiL.css...11.7 KiB166 ms
/images/I/41b0WuUEi7L.css?AUIClients/GWMWebAssets6.1 KiB
/images/I/51hieePaMlL._RC|51waPb-h-9L.css,51to0n6xYnL.css...14.6 KiB
/images/I/11i1DYEiaoL._RC|01GaLSH4siL.css,51fMLkDdAPL.css...36.8 KiB498 ms
/images/I/21SmWNnUNnL._RC|51flkNeC2kL.css_.css?AUIClients...7.0 KiB807 ms
/images/I/21NZdO3uFtL.js?AUIClients/GWMMetricsJS3.3 KiB
m.media-amazon.com/images/I/11J1WJh9jNL.js?AUIClients/PRIVCONAssets-stub2.0 KiB
m.media-amazon.com/images/I/11ZxbGB3PBL.css?AUIClients/WebFlowIngressJs1.2 KiB
m.media-amazon.com/images/I/41OtS-2qKxL.css?AUIClients/AdPlacementStyleAssets3.2 KiB

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
Your first delivery is FREE Click here to learn more div#CardInstance1xHdkEbNsqzhBa6_AY4atg > div._single-creative-card_style_windowDisplayContainer__18uaW > a.a-link-normal > img._single-creative-card_style_image__kEmO2
m.media-amazon.com/images/I/611mbhIZHAL._SX855_.jpg122.4 KiB71.0 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.png44.3 KiB35.0 KiB
eero Outdoor 7 white Wi-Fi router on blue-to-purple gradient background. div#CardInstanceI6ZvcO1Q8syaA2P9Q_BmHw > div._single-creative-card_style_windowDisplayContainer__18uaW > a.a-link-normal > img._single-creative-card_style_image__kEmO2
m.media-amazon.com/images/I/41PEbotqHYL._SX855_.jpg21.4 KiB12.4 KiB
PC games 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/41ejpdcZpkL._SR420,420_.jpg27.1 KiB10.7 KiB
Nintendo Switch 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/41PHN-2mq1L._SR420,420_.jpg23.9 KiB9.4 KiB
Tommy Hilfiger x U.S. SailGP div.a-section > div > div.a-section > img._single-creative-card_style_logo__2ZQ-N
m.media-amazon.com/images/I/41bCaWF3KFL._SR261,34_AC_FMpng_.png4.8 KiB4.3 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: 1.7 s
URLTime Spent
amazon.es/858 ms
www.amazon.es/857 ms
www.amazon.es/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

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

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: 300 ms 32.9 KiB
URLTransfer SizeEst Savings
d1nruqhae353qc.cloudfront.net/primesignup/es/widget.js53.8 KiB32.9 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: 2.4 s 655.1 KiB
URLTransfer SizeEst Savings
/1c5c1ecf7303/be01910c327c/6c185aecd8cc/challenge.js501.0 KiB280.2 KiB
m.media-amazon.com/images/I/91u1iWIbVEL.js?AUIClients/VideoJsCardsBuzz198.4 KiB198.1 KiB
/images/I/11I0WXrZVoL._RC|11Y+5x+kkTL.js,518IfuPC2lL.js,1...94.6 KiB64.9 KiB
/images/I/813oc2vlx2L._RC|31UBFcbo1CL.js,01wcltxKR5L.js,4...58.5 KiB35.5 KiB
/images/I/01Dlam7CRcL._RC|01wGOYsRBlL.js,81lKcMPaPWL.js_....44.5 KiB28.3 KiB
d1nruqhae353qc.cloudfront.net/primesignup/es/widget.js53.8 KiB24.4 KiB
m.media-amazon.com/images/I/81kCF8wuZEL.js?AUIClients/FWCIMAssets56.3 KiB23.8 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.

URLTotal CPU TimeScript EvaluationScript Parse
www.amazon.es/1.7 s525 ms98 ms
Unattributable1.4 s652 ms0.0 ms
d1nruqhae353qc.cloudfront.net/primesignup/es/widget.js890 ms696 ms10 ms
/1c5c1ecf7303/be01910c327c/6c185aecd8cc/challenge.js644 ms470 ms123 ms
/images/I/51jC0T3AfxL._RC|4134jecY+uL.js_.js?AUIClients/N...271 ms231 ms6.0 ms
/images/I/11I0WXrZVoL._RC|11Y+5x+kkTL.js,518IfuPC2lL.js,1...215 ms155 ms29 ms
m.media-amazon.com/images/I/51O38waYPKL.js?AUIClients/AmazonLightsaberPageAssets138 ms133 ms4.0 ms
/images/I/813oc2vlx2L._RC|31UBFcbo1CL.js,01wcltxKR5L.js,4...120 ms74 ms35 ms
m.media-amazon.com/images/I/61xJcNKKLXL.js?AUIClients/AmazonUIjQuery75 ms36 ms12 ms
m.media-amazon.com/images/I/11MgFhkox0L.js?xcp68 ms40 ms0.5 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.

CategoryTime Spent
Script Evaluation3.2 s
Other1.3 s
Style & Layout451 ms
Script Parsing & Compilation420 ms
Rendering286 ms
Parse HTML & CSS171 ms
Garbage Collection75 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 119.8 KiB
URLTransfer SizeEst Savings
/images/I/11i1DYEiaoL._RC|01GaLSH4siL.css,51fMLkDdAPL.css...53.2 KiB51.2 KiB
._interactive-footer-card_style_container__3GKmA{grid-gap:8px;display:grid;gap:8px; … } …23.3 KiB23.3 KiB
/images/I/51G19spDCAL._RC|41w5Jrt7mLL.css,01FcI3FsaiL.css...15.9 KiB15.8 KiB
/images/I/51hieePaMlL._RC|51waPb-h-9L.css,51to0n6xYnL.css...21.6 KiB15.5 KiB
._npack-asin-card_style_thresholdProgressBlock__AdcTN{background-color:#fff!important; … } …13.9 KiB13.9 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
/1c5c1ecf7303/be01910c327c/6c185aecd8cc/challenge.js501.5 KiB
www.amazon.es/426.0 KiB
www.amazon.es/425.7 KiB
m.media-amazon.com/images/I/611mbhIZHAL._SX855_.jpg123.1 KiB
/images/I/11I0WXrZVoL._RC|11Y+5x+kkTL.js,518IfuPC2lL.js,1...95.3 KiB
m.media-amazon.com/images/S/sash/YixBCot3QJnxh4p.woff292.4 KiB
/images/I/813oc2vlx2L._RC|31UBFcbo1CL.js,01wcltxKR5L.js,4...59.2 KiB
m.media-amazon.com/images/I/81kCF8wuZEL.js?AUIClients/FWCIMAssets57.0 KiB
d1nruqhae353qc.cloudfront.net/primesignup/es/widget.js54.4 KiB
/images/G/30/gno/sprites/new-nav-sprite-global-2x_bluehea...48.9 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
PC games 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/41ejpdcZpkL._SR420,420_.jpg
Nintendo Switch 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/41PHN-2mq1L._SR420,420_.jpg
div._single-video-card_style_lazy-loaded-video__3m5dG > div._single-video-card_style_overlay__3Sx3u > a.a-link-normal > img._single-video-card_style_poster-image__1W0yA div._single-video-card_style_lazy-loaded-video__3m5dG > div._single-video-card_style_overlay__3Sx3u > a.a-link-normal > img._single-video-card_style_poster-image__1W0yA
m.media-amazon.com/images/I/71yq9UE3UZL._SR285,456_.jpg
Read with Kindle Unlimited div#CardInstanceWqNhe19XFPv9IVKD5iUq1A > div.a-cardui-body > a.a-link-normal > img._category-card_image_round-corners__22iOW
m.media-amazon.com/images/I/61QTtY1hMnL._SR350,350_.jpg
Racing wheels 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/41j9FMqyqpL._SR140,140_.jpg
PlayStation 5 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/31UjSAMxKZL._SR140,140_.jpg
Food processors 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/41CkIIPhr0L._SR140,140_.jpg
Jug blenders 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/41M+OGd9m0L._SR140,140_.jpg
Vacuum cleaners 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/41inBnOrJFL._SR140,140_.jpg
Humidifiers 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/31OCPfX78UL._SR140,140_.jpg
Beauty and Fragrance 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/41SrrlkEHjL._SR180,67_.jpg
Furniture 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/31a-OB6duOL._SR180,67_.jpg
Sports and leisure 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/31uHgpI4ApL._SR180,67_.jpg
Headsets 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/31luSZHWFRL._SR180,67_.jpg
Outdoor activities 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/41bxzXUpyfL._SR180,67_.jpg
Pet store 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/31T62bBj9wL._SR180,67_.jpg

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

●Layout shift culprits
●Document request latency
●Optimize DOM size
●Forced reflow
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●Avoid long main-thread tasks 12 long tasks found
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 100 ms
●Server Backend Latencies 60 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 80 ms
○INP breakdown
○User Timing marks and measures
○Avoid non-composited animations
○Avoid large layout shifts
93

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.es form#nav-search-form > div.nav-fill > div.nav-search-field > input#nav-search-keywords
Your first delivery is FREE Click here to learn more T&Cs apply New eero Outdoo… 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
Privacy Notice div#nav-ftr > ul.nav-ftr-horiz > li.nav-li > a.nav-a
Legal Area div#nav-ftr > ul.nav-ftr-horiz > li.nav-li > a.nav-a
Interest-Based Ads Notice 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
PC games PC games div.a-cardui-body > div._multi-category-card_style_container__3HW_J > div > a.a-link-normal
Nintendo Switch Nintendo Switch div.a-cardui-body > div._multi-category-card_style_container__3HW_J > div > a.a-link-normal
Racing wheels Racing wheels div.a-cardui-body > div._multi-category-card_style_container__3HW_J > div > a.a-link-normal
PlayStation 5 PlayStation 5 div.a-cardui-body > div._multi-category-card_style_container__3HW_J > div > a.a-link-normal
Food processors Food processors div.a-cardui-body > div._multi-category-card_style_container__3HW_J > div > a.a-link-normal
Jug blenders Jug blenders div.a-cardui-body > div._multi-category-card_style_container__3HW_J > div > a.a-link-normal
Vacuum cleaners Vacuum cleaners div.a-cardui-body > div._multi-category-card_style_container__3HW_J > div > a.a-link-normal
Humidifiers Humidifiers 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
●`<video>` elements contain a `<track>` element with `[kind="captions"]`
●Uses ARIA roles only on compatible elements
●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.
○Tables have different content in the summary attribute and `<caption>`.
○All heading elements contain content.
○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.
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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.

URLAspect Ratio (Displayed)Aspect Ratio (Actual)
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/31a-OB6duOL._SR180,67_.jpg100 x 67 (1.49)180 x 67 (2.69)
Fashion 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/31-3uUSNmnL._SR180,67_.jpg100 x 67 (1.49)180 x 67 (2.69)
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/41SrrlkEHjL._SR180,67_.jpg100 x 67 (1.49)180 x 67 (2.69)
Sport 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/41GVbGLpNXL._SR180,67_.jpg100 x 67 (1.49)180 x 67 (2.69)
High Tech 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/31luSZHWFRL._SR180,67_.jpg100 x 67 (1.49)180 x 67 (2.69)
DIY 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/41MhSKA7KXL._SR180,67_.jpg100 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 / WarningSource
Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user's experience. For more help, check https://xhr.spec.whatwg.org/.
m.media-amazon.com/images/I/61xJcNKKLXL.js?AUIClients/AmazonUIjQuery line 176, col 175
SharedStorage
www.amazon.es/ line 1406, 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.

SourceDescription
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":"[CSM] Ajax request to same page detected fetch : https://www.amazon.es/","csm":"v5 ueLogError stack","logLevel":"WARN","attribution":"N/A","pageURL":"https://www.amazon.es/","s":["N/A"],"t":3445} [object Object]
●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
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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-es > div#hmenu-container > div#hmenu-canvas > a#hmenu-back-to-top body.a-m-es > 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`

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