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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.

26

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.

Layout shifts occur when elements move absent any user interaction. Investigate the causes of layout shifts, such as elements being added, removed, or their fonts changing as the page loads.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]
items: [map[node:map[type:text value:Total] score:0.000156] map[node:map[boundingRect:map[bottom:775 height:36 left:90 right:322 top:739 width:231] lhId:page-21-DIV nodeLabel:Do not sell or share my personal info path:1,HTML,1,BODY,1,DIV,2,DIV,0,DIV,3,DIV selector:div#consent_blackbar > div#truste-consent-track > div#truste-consent-content > div.donotsell snippet:<div class="donotsell"> type:node] score:0.000156 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:602 height:21 left:171 right:187 top:581 width:16] lhId:page-27-IMG nodeLabel:mercari-lock-icon path:1,HTML,1,BODY,1,DIV,2,DIV,0,DIV,0,DIV,1,DIV,0,IMG selector:div#truste-consent-content > div#truste-banner-header > div#truste-consent-icon > img snippet:<img src="//consent.trustarc.com/get?name=mercari-lock-icon-dark-gray.svg" alt="mercari-lock-icon"> type:node]]] type:subitems]]]
headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]
items: [map[node:map[type:text value:Total] score:0.138677] map[node:map[boundingRect:map[bottom:1629 height:329 left:0 right:412 top:1300 width:412] lhId:page-23-DIV nodeLabel:women path:1,HTML,1,BODY,5,DIV,1,DIV,6,DIV,0,DIV,7,DIV,0,DIV,0,DIV selector:div.AnonCards__CardContainer-sc-1b3efe2a-0 > div.Grid-sc-1avr99g > div.GridCol-sc-1revx1o > div.FitToContainer__FitToContainerInner-sc-daf9ec2e-0 snippet:<div data-testid="FitScroller" class="FitToContainer__FitToContainerInner-sc-daf9ec2e-0 cgdwIy"> type:node] score:0.138677]]
headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]
items: [map[node:map[type:text value:Total] score:0.005146] map[node:map[boundingRect:map[bottom:608 height:392 left:15 right:397 top:215 width:382] lhId:page-1-DIV nodeLabel:Live now: Flash Sale Event! ⚡ Enter code APRFLASH10 by 04/24/26 11:59 pm PDT to… path:1,HTML,1,BODY,1,DIV,0,DIV,1,DIV selector:body > div#iqxm > div#i0r7 > div#iom3 snippet:<div role="dialog" aria-modal="true" data-form-id="default-form" aria-label="Container" id="iom3" data-modal-styles-new="true" class="bz-modal" style="display: flex;"> type:node] score:0.005146 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:406 height:190 left:15 right:397 top:215 width:382] lhId:page-0-IMG nodeLabel:div.bz-sctn > div#i6jwb > div#ijviu > img#iq5gr path:1,HTML,1,BODY,1,DIV,0,DIV,1,DIV,1,DIV,0,DIV,0,DIV,0,IMG selector:div.bz-sctn > div#i6jwb > div#ijviu > img#iq5gr snippet:<img alt="" src="https://braze-images.com/appboy/communication/assets/image_assets/images/6…" id="iq5gr" aria-hidden="true" class="bz-img"> type:node]] map[cause:Web font extra:map[type:url value:https://braze-images.com/appboy/communication/assets/font_assets/files/640b79dd13d15a1271248f24/original.otf?1678473693]] map[cause:Web font extra:map[type:url value:https://braze-images.com/appboy/communication/assets/font_assets/files/62d01145ac6b5b3f18106b78/original.woff?1657803077]]] type:subitems]]]

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.

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:31.156 source:map[column:128179 line:1 type:source-location url:https://u-web-assets.mercdn.net/builds/r-v1.26.1585/_next/static/chunks/framework-410df72d408e49c5.js 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:65.151 source:map[type:text value:[unattributed]]] map[reflowTime:1.418 source:map[column:23921 line:0 type:source-location url:https://consent.trustarc.com/notice?domain=mercari.com&c=teconsent&js=nj&noticeType=bb&text=true urlProvider:network]] map[reflowTime:3.321 source:map[column:266606 line:1 type:source-location url:https://cdn.quadpay.com/v1/quadpay.js urlProvider:network]] map[reflowTime:30.484 source:map[column:16205 line:1307 type:source-location url:https://u-web-assets.mercdn.net/builds/r-v1.26.1585/_next/static/chunks/pages/_app-951ae3cec2930a6d.js urlProvider:network]] map[reflowTime:31.156 source:map[column:27847 line:0 type:source-location url:https://u-web-assets.mercdn.net/builds/r-v1.26.1585/_next/static/chunks/3418-467797429c47916c.js urlProvider:network]] map[reflowTime:1.519 source:map[column:332 line:412 type:source-location url:https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js urlProvider:network]] map[reflowTime:1.256 source:map[column:55 line:930 type:source-location url:https://www.mercari.com/ko40/?id=G-DJ5N7E6D07&cx=c&gtm=4e64k1 urlProvider:network]]]

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
div.bz-sctn > div#i6jwb > div#ijviu > img#iq5gr div.bz-sctn > div#i6jwb > div#ijviu > img#iq5gr
/appboy/communication/assets/image_assets/images/69dd83e2...1.6 MiB1.6 MiB
athleticapparel div.Container-sc-beaovl > div.Container-sc-beaovl > a.Link-sc-zv2dmn > img.AnonCards__CardImage-sc-1b3efe2a-1
u-web-assets.mercdn.net/assets/anonHomeCards/desktop/athleticapparel.png139.9 KiB123.4 KiB
tradingcards div.Container-sc-beaovl > div.Container-sc-beaovl > a.Link-sc-zv2dmn > img.AnonCards__CardImage-sc-1b3efe2a-1
u-web-assets.mercdn.net/assets/anonHomeCards/desktop/tradingcards.png135.0 KiB108.5 KiB
women div.Container-sc-beaovl > div.Container-sc-beaovl > a.Link-sc-zv2dmn > img.AnonCards__CardImage-sc-1b3efe2a-1
u-web-assets.mercdn.net/assets/anonHomeCards/desktop/women.png109.3 KiB92.6 KiB
kids div.Container-sc-beaovl > div.Container-sc-beaovl > a.Link-sc-zv2dmn > img.AnonCards__CardImage-sc-1b3efe2a-1
u-web-assets.mercdn.net/assets/anonHomeCards/desktop/kids.png105.7 KiB89.6 KiB
sneakers div.Container-sc-beaovl > div.Container-sc-beaovl > a.Link-sc-zv2dmn > img.AnonCards__CardImage-sc-1b3efe2a-1
u-web-assets.mercdn.net/assets/anonHomeCards/desktop/sneakers.png98.8 KiB87.1 KiB
figurines div.Container-sc-beaovl > div.Container-sc-beaovl > a.Link-sc-zv2dmn > img.AnonCards__CardImage-sc-1b3efe2a-1
u-web-assets.mercdn.net/assets/anonHomeCards/desktop/figurines.png102.4 KiB82.3 KiB
gaming div.Container-sc-beaovl > div.Container-sc-beaovl > a.Link-sc-zv2dmn > img.AnonCards__CardImage-sc-1b3efe2a-1
u-web-assets.mercdn.net/assets/anonHomeCards/desktop/gaming.png72.1 KiB57.9 KiB
men div.Container-sc-beaovl > div.Container-sc-beaovl > a.Link-sc-zv2dmn > img.AnonCards__CardImage-sc-1b3efe2a-1
u-web-assets.mercdn.net/assets/anonHomeCards/desktop/men.png59.3 KiB50.3 KiB
home div.Container-sc-beaovl > div.Container-sc-beaovl > a.Link-sc-zv2dmn > img.AnonCards__CardImage-sc-1b3efe2a-1
u-web-assets.mercdn.net/assets/anonHomeCards/desktop/home.png53.5 KiB45.3 KiB
downloadtheapp div.Container-sc-beaovl > div.Container-sc-beaovl > a.Link-sc-zv2dmn > img.AnonCards__CardImage-sc-1b3efe2a-1
u-web-assets.mercdn.net/assets/anonHomeCards/mobile/downloadtheapp.png51.2 KiB33.3 KiB
toys div.Grid-sc-1avr99g > div.GridCol-sc-1revx1o > a.Link-sc-zv2dmn > img.AnonCards__CardImage-sc-1b3efe2a-1
u-web-assets.mercdn.net/assets/anonHomeCards/mobile/toys.png35.0 KiB20.7 KiB
beauty div.Grid-sc-1avr99g > div.GridCol-sc-1revx1o > a.Link-sc-zv2dmn > img.AnonCards__CardImage-sc-1b3efe2a-1
u-web-assets.mercdn.net/assets/anonHomeCards/mobile/beauty.png32.3 KiB19.1 KiB
handbags div.Grid-sc-1avr99g > div.GridCol-sc-1revx1o > a.Link-sc-zv2dmn > img.AnonCards__CardImage-sc-1b3efe2a-1
u-web-assets.mercdn.net/assets/anonHomeCards/mobile/handbags.png27.6 KiB16.3 KiB
Retro 4 “Thunder” Black and Yellow US size 10.5 - Air Jordan div.Thumb__StyledProductThumbWrapper-sc-166684af-1 > div.Flex-sc-92a9411d-0 > div.Product__CDNImageWrapper-sc-c3a991-1 > img.CDNImage__StyledNextImage-sc-2e57b269-0
/photos/m32250349483_1.jpg?width=256&quality=75&_=177689684619.5 KiB8.8 KiB
electronics div.Grid-sc-1avr99g > div.GridCol-sc-1revx1o > a.Link-sc-zv2dmn > img.AnonCards__CardImage-sc-1b3efe2a-1
u-web-assets.mercdn.net/assets/anonHomeCards/mobile/electronics.png13.8 KiB8.2 KiB
Women’s Lace-Up Wedges - TOMS div.Thumb__StyledProductThumbWrapper-sc-166684af-1 > div.Flex-sc-92a9411d-0 > div.Product__CDNImageWrapper-sc-c3a991-1 > img.CDNImage__StyledNextImage-sc-2e57b269-0
/photos/m94542569987_1.jpg?width=256&quality=75&_=177504690318.7 KiB8.1 KiB
Chicago Blackhawks Chris Chelios Retirement Banner, scarf, bucket and winter hat div.Thumb__StyledProductThumbWrapper-sc-166684af-1 > div.Flex-sc-92a9411d-0 > div.Product__CDNImageWrapper-sc-c3a991-1 > img.CDNImage__StyledNextImage-sc-2e57b269-0
/photos/m40513111824_1.jpg?width=256&quality=75&_=176977653217.3 KiB6.7 KiB
Just Dance Kids 2 ( Xbox 360, 2011) Game, Case, and Instruction Manual - Micros… div.Thumb__StyledProductThumbWrapper-sc-166684af-1 > div.Flex-sc-92a9411d-0 > div.Product__CDNImageWrapper-sc-c3a991-1 > img.CDNImage__StyledNextImage-sc-2e57b269-0
/photos/m67787930342_1.jpg?width=256&quality=75&_=177503886815.7 KiB5.0 KiB
Dale Jarrett Figure NASCAR Stock Race Car 1998 Champion Christmas Ornament div.Thumb__StyledProductThumbWrapper-sc-166684af-1 > div.Flex-sc-92a9411d-0 > div.Product__CDNImageWrapper-sc-c3a991-1 > img.CDNImage__StyledNextImage-sc-2e57b269-0
/photos/m47098709986_1.jpg?width=256&quality=75&_=177504880310.8 KiB4.7 KiB
Leinenkugels Beer Visor Red Embroidered Logo Adjustable Golf Brewery Casual div.Thumb__StyledProductThumbWrapper-sc-166684af-1 > div.Flex-sc-92a9411d-0 > div.Product__CDNImageWrapper-sc-c3a991-1 > img.CDNImage__StyledNextImage-sc-2e57b269-0
/photos/m76025693463_1.jpg?width=256&quality=75&_=177504948315.1 KiB4.4 KiB

Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-20-IMG
nodeLabel: Live now! April 22 - April 24 flash sale event! Coupon for 10% off item price(s…
path: 1,HTML,1,BODY,5,DIV,1,DIV,5,DIV,0,A,0,IMG
selector: div > div.Container-sc-beaovl > a.Link__StyledAnchor-sc-3b50994f-0 > img.CDNImage__StyledNextImage-sc-2e57b269-0
snippet: <img alt="Live now! April 22 - April 24 flash sale event! Coupon for 10% off item pr…" loading="lazy" width="750" height="320" decoding="async" data-nimg="1" class="CDNImage__StyledNextImage-sc-2e57b269-0 jyHTcX AnonBanner__StyledImage-sc-…" srcset="https://u-web-assets.mercdn.net/assets/banner/anon-banner-april-flash-mobi…" src="https://u-web-assets.mercdn.net/assets/banner/anon-banner-april-flash-mobi…" style="color: transparent;">

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
u-web-assets.mercdn.net/assets/styles/dist/styles.min.css2.7 KiB154 ms

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

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.

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: 757 ms
URLTime Spent
mercari.com/757 ms
www.mercari.com/0.0 ms

These are the largest layout shifts observed on the page. Each table item represents a single layout shift, and shows the element that shifted the most. Below each item are possible root causes that led to the layout shift. Some of these layout shifts may not be included in the CLS metric value due to windowing. Learn how to improve CLS

Why this matters

Performance issues directly impact user engagement and conversion rates.

ElementLayout shift score
women div.AnonCards__CardContainer-sc-1b3efe2a-0 > div.Grid-sc-1avr99g > div.GridCol-sc-1revx1o > div.FitToContainer__FitToContainerInner-sc-daf9ec2e-0
0.139
Live now: Flash Sale Event! ⚡ Enter code APRFLASH10 by 04/24/26 11:59 pm PDT to… body > div#iqxm > div#i0r7 > div#iom3
0.005
Do not sell or share my personal info div#consent_blackbar > div#truste-consent-track > div#truste-consent-content > div.donotsell
0.000

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.

URLTotal CPU TimeScript EvaluationScript Parse
/builds/r-v1.26.1585/_next/static/chunks/framework-410df7...7.3 s6.6 s22 ms
/builds/r-v1.26.1585/_next/static/chunks/pages/_app-951ae...6.9 s4.6 s302 ms
Unattributable4.0 s312 ms0.0 ms
cdn.quadpay.com/v1/quadpay.js1.2 s819 ms98 ms
www.mercari.com/1.0 s43 ms5.4 ms
/builds/r-v1.26.1585/_next/static/chunks/28114-4e311b2e1d...518 ms434 ms3.1 ms
www.mercari.com/ko40/?id=G-DJ5N7E6D07&cx=c&gtm=4e64k1446 ms385 ms55 ms
www.mercari.com/ko40/?id=AW-880627815&cx=c&gtm=4e64k1427 ms360 ms60 ms
www.mercari.com/cdn-cgi/challenge-platform/scripts/jsd/main.js424 ms408 ms3.5 ms
www.mercari.com/ko40/?id=AW-782098151&cx=c&gtm=4e64k1389 ms337 ms48 ms
/builds/r-v1.26.1585/_next/static/chunks/92924.1fd2d1cdd3...384 ms200 ms32 ms
www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js363 ms237 ms104 ms
/builds/r-v1.26.1585/_next/static/chunks/35407.b1a7ae4368...348 ms271 ms1.4 ms
www.mercari.com/ko40/?id=DC-13580167&cx=c&gtm=4e64k1342 ms221 ms69 ms
www.mercari.com/ko40/333 ms231 ms63 ms
www.mercari.com/ko40/gtd?id=AW-828932699&cx=c&gtm=4e64k1332 ms294 ms34 ms
www.mercari.com/ko40/?id=DC-13949580&cx=c&gtm=4e64k1325 ms256 ms67 ms
www.mercari.com/ko40/?id=DC-9344415&cx=c&gtm=4e64k1257 ms217 ms39 ms
/builds/r-v1.26.1585/_next/static/chunks/pages/index-c0d6...196 ms191 ms1.0 ms
connect.facebook.net/en_US/fbevents.js192 ms155 ms35 ms
www.mercari.com/ko40/gtd?id=AW-dynamic_home&cx=c&gtm=4e64k1188 ms147 ms40 ms
/signals/config/332253387150322?v=2.9.303&r=stable&domain...187 ms163 ms24 ms
www.googletagmanager.com/gtm.js?id=GTM-MSDTXHX176 ms83 ms88 ms
/builds/r-v1.26.1585/_next/static/chunks/main-8a62d0182b0...142 ms128 ms13 ms
/builds/r-v1.26.1585/_next/static/chunks/30130.33fbe4d438...125 ms113 ms2.8 ms
consent.trustarc.com/asset/notice.js/v/v1.7-1729103 ms72 ms15 ms
consent.trustarc.com/autoblockoptout?domain=mercari.com97 ms95 ms0.7 ms
consent.trustarc.com/asset/uspapi.js82 ms76 ms2.1 ms
accounts.google.com/gsi/client65 ms35 ms27 ms
/notice?domain=mercari.com&c=teconsent&js=nj&noticeType=b...54 ms38 ms4.9 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 Evaluation18.2 s
Other5.6 s
Style & Layout1.4 s
Script Parsing & Compilation1.3 s
Garbage Collection791 ms
Rendering418 ms
Parse HTML & CSS112 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
The page has an unload handler in the main frame.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
athleticapparel div.Container-sc-beaovl > div.Container-sc-beaovl > a.Link-sc-zv2dmn > img.AnonCards__CardImage-sc-1b3efe2a-1
u-web-assets.mercdn.net/assets/anonHomeCards/desktop/athleticapparel.png
sneakers div.Container-sc-beaovl > div.Container-sc-beaovl > a.Link-sc-zv2dmn > img.AnonCards__CardImage-sc-1b3efe2a-1
u-web-assets.mercdn.net/assets/anonHomeCards/desktop/sneakers.png
women div.Container-sc-beaovl > div.Container-sc-beaovl > a.Link-sc-zv2dmn > img.AnonCards__CardImage-sc-1b3efe2a-1
u-web-assets.mercdn.net/assets/anonHomeCards/desktop/women.png
men div.Container-sc-beaovl > div.Container-sc-beaovl > a.Link-sc-zv2dmn > img.AnonCards__CardImage-sc-1b3efe2a-1
u-web-assets.mercdn.net/assets/anonHomeCards/desktop/men.png
kids div.Container-sc-beaovl > div.Container-sc-beaovl > a.Link-sc-zv2dmn > img.AnonCards__CardImage-sc-1b3efe2a-1
u-web-assets.mercdn.net/assets/anonHomeCards/desktop/kids.png
home div.Container-sc-beaovl > div.Container-sc-beaovl > a.Link-sc-zv2dmn > img.AnonCards__CardImage-sc-1b3efe2a-1
u-web-assets.mercdn.net/assets/anonHomeCards/desktop/home.png
figurines div.Container-sc-beaovl > div.Container-sc-beaovl > a.Link-sc-zv2dmn > img.AnonCards__CardImage-sc-1b3efe2a-1
u-web-assets.mercdn.net/assets/anonHomeCards/desktop/figurines.png
tradingcards div.Container-sc-beaovl > div.Container-sc-beaovl > a.Link-sc-zv2dmn > img.AnonCards__CardImage-sc-1b3efe2a-1
u-web-assets.mercdn.net/assets/anonHomeCards/desktop/tradingcards.png
gaming div.Container-sc-beaovl > div.Container-sc-beaovl > a.Link-sc-zv2dmn > img.AnonCards__CardImage-sc-1b3efe2a-1
u-web-assets.mercdn.net/assets/anonHomeCards/desktop/gaming.png
downloadtheapp div.Container-sc-beaovl > div.Container-sc-beaovl > a.Link-sc-zv2dmn > img.AnonCards__CardImage-sc-1b3efe2a-1
u-web-assets.mercdn.net/assets/anonHomeCards/mobile/downloadtheapp.png
electronics div.Grid-sc-1avr99g > div.GridCol-sc-1revx1o > a.Link-sc-zv2dmn > img.AnonCards__CardImage-sc-1b3efe2a-1
u-web-assets.mercdn.net/assets/anonHomeCards/mobile/electronics.png
toys div.Grid-sc-1avr99g > div.GridCol-sc-1revx1o > a.Link-sc-zv2dmn > img.AnonCards__CardImage-sc-1b3efe2a-1
u-web-assets.mercdn.net/assets/anonHomeCards/mobile/toys.png
beauty div.Grid-sc-1avr99g > div.GridCol-sc-1revx1o > a.Link-sc-zv2dmn > img.AnonCards__CardImage-sc-1b3efe2a-1
u-web-assets.mercdn.net/assets/anonHomeCards/mobile/beauty.png
handbags div.Grid-sc-1avr99g > div.GridCol-sc-1revx1o > a.Link-sc-zv2dmn > img.AnonCards__CardImage-sc-1b3efe2a-1
u-web-assets.mercdn.net/assets/anonHomeCards/mobile/handbags.png
mercari-lock-icon div#truste-consent-content > div#truste-banner-header > div#truste-consent-icon > img
consent.trustarc.com/get?name=mercari-lock-icon-dark-gray.svg
Women div.Container-sc-beaovl > a.Link__StyledAnchor-sc-3b50994f-0 > div.Container-sc-beaovl > img.Image-sc-a4ad9978-1
u-web-assets.mercdn.net/assets/meganavCategoryIcon/1.svg
Men div.Container-sc-beaovl > a.Link__StyledAnchor-sc-3b50994f-0 > div.Container-sc-beaovl > img.Image-sc-a4ad9978-1
u-web-assets.mercdn.net/assets/meganavCategoryIcon/2.svg
Electronics div.Container-sc-beaovl > a.Link__StyledAnchor-sc-3b50994f-0 > div.Container-sc-beaovl > img.Image-sc-a4ad9978-1
u-web-assets.mercdn.net/assets/meganavCategoryIcon/7.svg
Toys div.Container-sc-beaovl > a.Link__StyledAnchor-sc-3b50994f-0 > div.Container-sc-beaovl > img.Image-sc-a4ad9978-1
u-web-assets.mercdn.net/assets/meganavCategoryIcon/1611.svg
Gaming div.Container-sc-beaovl > a.Link__StyledAnchor-sc-3b50994f-0 > div.Container-sc-beaovl > img.Image-sc-a4ad9978-1
u-web-assets.mercdn.net/assets/meganavCategoryIcon/84.svg
Handbags div.Container-sc-beaovl > a.Link__StyledAnchor-sc-3b50994f-0 > div.Container-sc-beaovl > img.Image-sc-a4ad9978-1
u-web-assets.mercdn.net/assets/meganavCategoryIcon/21.svg
Home div.Container-sc-beaovl > a.Link__StyledAnchor-sc-3b50994f-0 > div.Container-sc-beaovl > img.Image-sc-a4ad9978-1
u-web-assets.mercdn.net/assets/meganavCategoryIcon/4.svg
Vintage div.Container-sc-beaovl > a.Link__StyledAnchor-sc-3b50994f-0 > div.Container-sc-beaovl > img.Image-sc-a4ad9978-1
u-web-assets.mercdn.net/assets/meganavCategoryIcon/5.svg
Beauty div.Container-sc-beaovl > a.Link__StyledAnchor-sc-3b50994f-0 > div.Container-sc-beaovl > img.Image-sc-a4ad9978-1
u-web-assets.mercdn.net/assets/meganavCategoryIcon/6.svg
Kids div.Container-sc-beaovl > a.Link__StyledAnchor-sc-3b50994f-0 > div.Container-sc-beaovl > img.Image-sc-a4ad9978-1
u-web-assets.mercdn.net/assets/meganavCategoryIcon/3.svg
Sports div.Container-sc-beaovl > a.Link__StyledAnchor-sc-3b50994f-0 > div.Container-sc-beaovl > img.Image-sc-a4ad9978-1
u-web-assets.mercdn.net/assets/meganavCategoryIcon/8.svg
Handmade div.Container-sc-beaovl > a.Link__StyledAnchor-sc-3b50994f-0 > div.Container-sc-beaovl > img.Image-sc-a4ad9978-1
u-web-assets.mercdn.net/assets/meganavCategoryIcon/9.svg
Office div.Container-sc-beaovl > a.Link__StyledAnchor-sc-3b50994f-0 > div.Container-sc-beaovl > img.Image-sc-a4ad9978-1
u-web-assets.mercdn.net/assets/meganavCategoryIcon/2882.svg
Pet div.Container-sc-beaovl > a.Link__StyledAnchor-sc-3b50994f-0 > div.Container-sc-beaovl > img.Image-sc-a4ad9978-1
u-web-assets.mercdn.net/assets/meganavCategoryIcon/143.svg
Outdoor div.Container-sc-beaovl > a.Link__StyledAnchor-sc-3b50994f-0 > div.Container-sc-beaovl > img.Image-sc-a4ad9978-1
u-web-assets.mercdn.net/assets/meganavCategoryIcon/2633.svg
Tools div.Container-sc-beaovl > a.Link__StyledAnchor-sc-3b50994f-0 > div.Container-sc-beaovl > img.Image-sc-a4ad9978-1
u-web-assets.mercdn.net/assets/meganavCategoryIcon/3170.svg
Books div.Container-sc-beaovl > a.Link__StyledAnchor-sc-3b50994f-0 > div.Container-sc-beaovl > img.Image-sc-a4ad9978-1
u-web-assets.mercdn.net/assets/meganavCategoryIcon/141.svg
View all div.Container-sc-beaovl > a.Link__StyledAnchor-sc-3b50994f-0 > div.Container-sc-beaovl > img.Image-sc-a4ad9978-1
u-web-assets.mercdn.net/assets/meganavCategoryIcon/0.svg
American Express Logo ul.UnstyledList-sc-1hlucv7 > li > a.Link-sc-zv2dmn > img.ResponsiveLogo-sc-1n6eohs
u-web-assets.mercdn.net/assets/footer/payment-methods/american-express.svg
Visa Logo ul.UnstyledList-sc-1hlucv7 > li > a.Link-sc-zv2dmn > img.ResponsiveLogo-sc-1n6eohs
u-web-assets.mercdn.net/assets/footer/payment-methods/visa.svg
Paypal Logo ul.UnstyledList-sc-1hlucv7 > li > a.Link-sc-zv2dmn > img.ResponsiveLogo-sc-1n6eohs
u-web-assets.mercdn.net/assets/footer/payment-methods/paypal.svg
MasterCard Logo ul.UnstyledList-sc-1hlucv7 > li > a.Link-sc-zv2dmn > img.ResponsiveLogo-sc-1n6eohs
u-web-assets.mercdn.net/assets/footer/payment-methods/mastercard.svg
Discover Logo ul.UnstyledList-sc-1hlucv7 > li > a.Link-sc-zv2dmn > img.ResponsiveLogo-sc-1n6eohs
u-web-assets.mercdn.net/assets/footer/payment-methods/discover.svg
Zip Logo ul.UnstyledList-sc-1hlucv7 > li > a.Link-sc-zv2dmn > img.ResponsiveLogo-sc-1n6eohs
u-web-assets.mercdn.net/assets/footer/payment-methods/zip.svg
Paypal Pay in 4 Logo ul.UnstyledList-sc-1hlucv7 > li > a.Link-sc-zv2dmn > img.ResponsiveLogo-sc-1n6eohs
u-web-assets.mercdn.net/assets/footer/payment-methods/paypal-pay-in-4.svg
Apple Pay Logo ul.UnstyledList-sc-1hlucv7 > li > a.Link-sc-zv2dmn > img.ResponsiveLogo-sc-1n6eohs
u-web-assets.mercdn.net/assets/footer/payment-methods/apple-pay.svg
Venmo Logo ul.UnstyledList-sc-1hlucv7 > li > a.Link-sc-zv2dmn > img.ResponsiveLogo-sc-1n6eohs
u-web-assets.mercdn.net/assets/footer/payment-methods/venmo.svg
div.Flex-sc-92a9411d-0 > span.RectangleLabel-sc-cwvp98 > div.Container-sc-beaovl > img.Image-sc-a4ad9978-1 div.Flex-sc-92a9411d-0 > span.RectangleLabel-sc-cwvp98 > div.Container-sc-beaovl > img.Image-sc-a4ad9978-1
u-web-assets.mercdn.net/assets/icons/icn-discount-arrow.svg

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

Optimize DOM size
LCP breakdown
Modern HTTP
Optimize viewport for mobile
Minify CSS
Minify JavaScript
Reduce unused CSS
User Timing marks and measures 29 user timings
Avoid long main-thread tasks 20 long tasks found
Network Requests
Network Round Trip Times 70 ms
Server Backend Latencies 100 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Initial server response time was short Root document took 90 ms
INP breakdown
Avoid non-composited animations
88

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.

Navigation

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Women div.Container-sc-beaovl > a.Link__StyledAnchor-sc-3b50994f-0 > div.Container-sc-beaovl > h6.H7-sc-1e92cdr
Apple div.Container-sc-beaovl > div.Flex__Box-sc-92a9411d-1 > a.Link__StyledAnchor-sc-3b50994f-0 > h6.H6-sc-khsc0s

These are opportunities to improve keyboard navigation in your application.

Names and labels

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.Flex-sc-92a9411d-0 > span.RectangleLabel-sc-cwvp98 > div.Container-sc-beaovl > img.Image-sc-a4ad9978-1 div.Flex-sc-92a9411d-0 > span.RectangleLabel-sc-cwvp98 > div.Container-sc-beaovl > img.Image-sc-a4ad9978-1

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.

Best practices

Disabling zooming is problematic for users with low vision who rely on screen magnification to properly see the contents of a web page. Learn more about the viewport meta tag.

Why this matters

Informational: a Permissions-Policy directive showing feature -> allowed origins.

Source: MDN Permissions-Policy

Failing Elements
head > meta head > meta

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html html

These items highlight common accessibility best practices.

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
Form elements have associated labels
`button`, `link`, and `menuitem` elements have accessible names
ARIA attributes are used as specified for the element's role
`[aria-hidden="true"]` elements do not contain focusable descendents
Elements use only permitted ARIA attributes
Background and foreground colors have a sufficient contrast ratio
Document has a `<title>` element
`<frame>` or `<iframe>` elements have a title
`<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
Touch targets have sufficient size and spacing.
`[lang]` attributes have a valid value
Deprecated ARIA roles were not used
Image elements do not have `[alt]` attributes that are redundant text.
Identical links have the same purpose.
Elements with visible text labels have matching accessible names.
`[accesskey]` values are unique
Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
ARIA input fields have accessible names
ARIA `meter` elements have accessible names
ARIA `progressbar` elements have accessible names
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
`[role]`s are contained by their required parent element
Elements with the `role=text` attribute do not have focusable descendents.
ARIA toggle fields have accessible names
ARIA `tooltip` elements have accessible names
ARIA `treeitem` elements have accessible names
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
`<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.
`<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.
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.

Deprecation / WarningSource
Unload event listeners are deprecated and will be removed.
SharedStorage
StorageType.persistent is deprecated. Please use standardized navigator.storage instead.
Fledge
AttributionReporting

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
[GSI_LOGGER]: FedCM get() rejects with NetworkError: Error retrieving a token.
Framing 'https://www.google.com/' violates the following report-only Content Security Policy directive: "frame-ancestors 'self'". The violation has been logged, but no further action has been taken.
Not signed in with the identity provider.

Issues logged to the `Issues` panel in Chrome Devtools indicate unresolved problems. They can come from network request failures, insufficient security controls, and other browser concerns. Open up the Issues panel in Chrome DevTools for more details on each issue.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Issue type
Content security policy

Source maps translate minified code to the original source code. This helps developers debug in production. In addition, Lighthouse is able to provide further insights. Consider deploying source maps to take advantage of these benefits. Learn more about source maps.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLMap URL
www.mercari.com/ko40/?id=G-DJ5N7E6D07&cx=c&gtm=4e64k1
www.mercari.com/ko40/
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cdn.quadpay.com/v1/quadpay.jscdn.quadpay.com/v1/quadpay.js.map
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
Redirects HTTP traffic to HTTPS
Mitigate clickjacking with XFO or CSP
83

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
Do not sell or share my personal info div#truste-consent-track > div#truste-consent-content > div.donotsell > a

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

Content Best Practices

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.Flex-sc-92a9411d-0 > span.RectangleLabel-sc-cwvp98 > div.Container-sc-beaovl > img.Image-sc-a4ad9978-1 div.Flex-sc-92a9411d-0 > span.RectangleLabel-sc-cwvp98 > div.Container-sc-beaovl > img.Image-sc-a4ad9978-1

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 have descriptive text
robots.txt is valid
Document has a valid `hreflang`
Document has a valid `rel=canonical`

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