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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.

19

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
/signals/config/875304955236868?v=2.9.298&r=stable&domain...1200.0 s127.0 KiB
/signals/config/1308629997445925?v=2.9.298&r=stable&domai...1200.0 s126.9 KiB
/signals/config/4355369038068620?v=2.9.298&r=stable&domai...1200.0 s126.9 KiB
/signals/config/1389856708696550?v=2.9.298&r=stable&domai...1200.0 s126.9 KiB
/signals/config/2102918640517656?v=2.9.298&r=stable&domai...1200.0 s126.9 KiB
/signals/config/25069282142772105?v=2.9.298&r=stable&doma...1200.0 s126.9 KiB
s-cdn.rmp.rakuten.co.jp/js/cd.js3600.0 s120.2 KiB
connect.facebook.net/en_US/fbevents.js1200.0 s96.4 KiB
s-cdn.rmp.rakuten.co.jp/js/aa.js3600.0 s102.6 KiB
/signals/config/149307711579983?v=2.9.298&r=stable&domain...1200.0 s44.5 KiB
/signals/config/1114717489487974?v=2.9.298&r=stable&domai...1200.0 s44.5 KiB
b99.yahoo.co.jp/pagead/conversion_async.js0.0 ms23.4 KiB
jscdn.appier.net/aa.js?id=rakuten.co.jp300.0 s20.0 KiB
dynamic.criteo.com/js/ld/ld.js?a=44566&a=87771&a=12079610800.0 s24.7 KiB
static.criteo.net/js/ld/ld.js10800.0 s24.7 KiB
s.yimg.jp/images/listing/tool/cv/ytag.js600.0 s11.8 KiB
www.rakuten.co.jp/akam/13/62eb75e021600.0 s9.3 KiB
r.r10s.jp/com/rat/js/ral-1.10.1.js86400.0 s11.8 KiB
/eh-cont/v2/ichiba?source_id=4&device_type=sp&channel_typ...0.0 ms3.7 KiB
r.r10s.jp/com/ap/target/phoenix-2.7.2.min.js86400.0 s8.9 KiB
cdn.smartnews-ads.com/i/pixel.js150.0 s3.3 KiB
dmp.im-apps.net/clients/rakuten/uid.js3600.0 s3.1 KiB
tags.creativecdn.com/L52n0153rTKlxZFwgXDs.js3600.0 s2.7 KiB
tags.creativecdn.com/dSUgiq2sfddqypCVjN3V.js3600.0 s2.6 KiB
www.rakuten.co.jp/com/advance/ichiba/ichiba_sp_top_group_banner/sp/condition.js0.0 ms1.5 KiB
d.line-scdn.net/n/line_tag/public/release/v1/lt.js1992055.0 s10.1 KiB
/cksync.php?cs=3&type=crt&ovsid=k-hU40V_K_CLaNKptaM7n1dnJ...0.0 ms597 B
/?cpkg_none=%7B%22acc%22%3A486%2C%22aid%22%3A1%2C%22bid%2...0.0 ms587 B
/cksync.php?cs=3&type=crt&ovsid=k-hU40V_K_CLaNKptaM7n1dnJ...0.0 ms452 B
/uid/sync.htm?pid=13079&cuid=k-VsAiVvK_CLaNKptaM7n1dnJ-ee...0.0 ms411 B
criteo-partners.tremorhub.com/sync?UICR=k-BBDXx_K_CLaNKptaM7n1dnJ-eeDP0Y3YgDRmgA0.0 ms398 B
criteo-partners.tremorhub.com/sync?UICR=k-BBDXx_K_CLaNKptaM7n1dnJ-eeDP0Y3YgDRmgA0.0 ms398 B
criteo-partners.tremorhub.com/sync?UICR=k-BBDXx_K_CLaNKptaM7n1dnJ-eeDP0Y3YgDRmgA0.0 ms398 B
criteo-partners.tremorhub.com/sync?UICR=k-BBDXx_K_CLaNKptaM7n1dnJ-eeDP0Y3YgDRmgA0.0 ms398 B
criteo-partners.tremorhub.com/sync?UICR=k-BBDXx_K_CLaNKptaM7n1dnJ-eeDP0Y3YgDRmgA0.0 ms397 B
/sg/criteortb-network/1/rtb-h/?taboola_hm=k-ifCbGfK_CLaNK...0.0 ms388 B
/sg/criteortb-network/1/rtb-h/?taboola_hm=k-ifCbGfK_CLaNK...0.0 ms388 B
/sg/criteortb-network/1/rtb-h/?taboola_hm=k-ifCbGfK_CLaNK...0.0 ms388 B
/sg/criteortb-network/1/rtb-h/?taboola_hm=k-ifCbGfK_CLaNK...0.0 ms388 B
/sg/criteortb-network/1/rtb-h/?taboola_hm=k-ifCbGfK_CLaNK...0.0 ms387 B
/ul_cb/match?publisher_dsp_id=38&external_user_id=k-LT2di...0.0 ms293 B
/ul_cb/match?publisher_dsp_id=38&external_user_id=k-LT2di...0.0 ms293 B
/ul_cb/match?publisher_dsp_id=38&external_user_id=k-LT2di...0.0 ms293 B
/ul_cb/match?publisher_dsp_id=38&external_user_id=k-LT2di...0.0 ms293 B
/ul_cb/match?publisher_dsp_id=38&external_user_id=k-LT2di...0.0 ms293 B
match.adsrvr.org/track/cmb/generic?ttd_pid=8wutv4d&ttd_tpi=1&gdpr=00.0 ms255 B
/p?id=cdc764d043d719a0b4dc545a&t=1776361545&url=https%3A%...0.0 ms227 B
/p?id=71a405ecfcfa62469ef90716&t=1776361545&url=https%3A%...0.0 ms227 B
/p?id=cdc764d043d719a0b4dc545a&t=1776361546&url=https%3A%...0.0 ms225 B
/p?id=cdc764d043d719a0b4dc545a&t=1776361546&url=https%3A%...0.0 ms224 B
/unfilled?datp=adbELMIm97NzlDE-N6S42jNUuxPuRQn0JsuuMTslF4...0.0 ms214 B
www.rakuten.co.jp/com/tls/tls.js0.0 ms212 B
/s/28292?bidder_id=71340&bidder_uuid=k-7u1F5_K_CLaNKptaM7...0.0 ms208 B
/s/28292?bidder_id=71340&bidder_uuid=k-7u1F5_K_CLaNKptaM7...0.0 ms208 B
/s/28292?bidder_id=71340&bidder_uuid=k-7u1F5_K_CLaNKptaM7...0.0 ms208 B
/s/28292?bidder_id=71340&bidder_uuid=k-7u1F5_K_CLaNKptaM7...0.0 ms208 B
/s/28292?bidder_id=71340&bidder_uuid=k-7u1F5_K_CLaNKptaM7...0.0 ms208 B
api.r10s.jp/clientinfo?callback=r2jsonp177636154055092721326409164370.0 ms174 B
sin.creativecdn.com/adx/cm?v=2&pi=adx&tdc=sin&google_error=3&tc=10.0 ms124 B
sin.creativecdn.com/adx/cm?v=2&pi=adx&tdc=sin&google_error=3&tc=10.0 ms124 B
/unfilled?datp=mXhIdYV7G84K-XZMRiHTxfAilhWXdeEku2Ig74gpU1...0.0 ms119 B
/unfilled?datp=RhdDPpaXtKPq9MFVWO26G0EIrJZaIYBol3GpAah8Au...0.0 ms118 B
/unfilled?datp=PFvUCgw6pvR0GFosFatOQFMB2j3bu6Mozyp3qjs1M9...0.0 ms118 B
/r3/f75d?url=https%3A%2F%2Fgrp15.ias.rakuten.co.jp%2Fgw.j...0.0 ms102 B
/r3/f75d?url=https%3A%2F%2Fgrp15.ias.rakuten.co.jp%2Fgw.j...0.0 ms94 B
/uid/sync.htm?pid=13079&cuid=k-VsAiVvK_CLaNKptaM7n1dnJ-ee...0.0 ms89 B
/uid/sync.htm?pid=13079&cuid=k-VsAiVvK_CLaNKptaM7n1dnJ-ee...0.0 ms89 B
/uid/sync.htm?pid=13079&cuid=k-VsAiVvK_CLaNKptaM7n1dnJ-ee...0.0 ms89 B
/uid/sync.htm?pid=13079&cuid=k-VsAiVvK_CLaNKptaM7n1dnJ-ee...0.0 ms89 B
/cksync.php?cs=3&type=crt&ovsid=k-hU40V_K_CLaNKptaM7n1dnJ...0.0 ms61 B
/cksync.php?cs=3&type=crt&ovsid=k-hU40V_K_CLaNKptaM7n1dnJ...0.0 ms61 B
/cksync.php?cs=3&type=crt&ovsid=k-hU40V_K_CLaNKptaM7n1dnJ...0.0 ms61 B
/r3/f75d?url=https%3A%2F%2Fgrp15.ias.rakuten.co.jp%2Fgw.j...0.0 ms57 B
/tr/?id=2102918640517656&ev=PageView&dl=https%3A%2F%2Fgrp...0.0 ms23 B
/tr/?id=875304955236868&ev=PageView&dl=https%3A%2F%2Fgrp1...0.0 ms23 B
/tr/?id=875304955236868&ev=AddToWishlist&dl=https%3A%2F%2...0.0 ms23 B
/tr/?id=25069282142772105&ev=PageView&dl=https%3A%2F%2Fgr...0.0 ms23 B
/tr/?id=4355369038068620&ev=PageView&dl=https%3A%2F%2Fgrp...0.0 ms23 B
/tr/?id=4355369038068620&ev=Contact&dl=https%3A%2F%2Fgrp1...0.0 ms23 B
/tr?id=1762797887297705&ev=PageView&cd[content_type]=prod...0.0 ms23 B
/tr/?id=7990815291011029&ev=PageView&dl=https%3A%2F%2Fgrp...0.0 ms19 B
/tr/?id=703715494234766&ev=PageView&dl=https%3A%2F%2Fgrp1...0.0 ms16 B
/tr/?id=6379376198810490&ev=PageView&dl=https%3A%2F%2Fgrp...0.0 ms16 B
/tr/?id=1114717489487974&ev=PageView&dl=https%3A%2F%2Fgrp...0.0 ms16 B
/tr/?id=1114717489487974&ev=ViewContent&dl=https%3A%2F%2F...0.0 ms16 B
/tr/?id=149307711579983&ev=PageView&dl=https%3A%2F%2Fgrp1...0.0 ms16 B
/tr/?id=1389856708696550&ev=PageView&dl=https%3A%2F%2Fgrp...0.0 ms16 B
/tr/?id=1389856708696550&ev=ViewContent&dl=https%3A%2F%2F...0.0 ms16 B
/tr/?id=1389856708696550&ev=PageView&dl=https%3A%2F%2Fgrp...0.0 ms16 B
/tr/?id=1308629997445925&ev=PageView&dl=https%3A%2F%2Fgrp...0.0 ms16 B
/signals/config/1389856708696550?v=2.9.298&r=stable&domai...1200.0 s0 B
connect.facebook.net/en_US/fbevents.js1200.0 s0 B
connect.facebook.net/en_US/fbevents.js1200.0 s0 B
connect.facebook.net/en_US/fbevents.js1200.0 s0 B
connect.facebook.net/en_US/fbevents.js1200.0 s0 B
connect.facebook.net/en_US/fbevents.js1200.0 s0 B
connect.facebook.net/en_US/fbevents.js1200.0 s0 B
connect.facebook.net/en_US/fbevents.js1200.0 s0 B
connect.facebook.net/en_US/fbevents.js1200.0 s0 B
connect.facebook.net/en_US/fbevents.js1200.0 s0 B
connect.facebook.net/en_US/fbevents.js1200.0 s0 B
connect.facebook.net/en_US/fbevents.js1200.0 s0 B
s-cdn.rmp.rakuten.co.jp/js/cd.js3600.0 s0 B
s-cdn.rmp.rakuten.co.jp/js/cd.js3600.0 s0 B
s-cdn.rmp.rakuten.co.jp/js/cd.js3600.0 s0 B
static.criteo.net/js/ld/ld.js10800.0 s0 B
jscdn.appier.net/aa.js?id=rakuten.co.jp300.0 s0 B
s.yimg.jp/images/listing/tool/cv/ytag.js600.0 s0 B
s.yimg.jp/images/listing/tool/cv/ytag.js600.0 s0 B
s.yimg.jp/images/listing/tool/cv/ytag.js600.0 s0 B
s.yimg.jp/images/listing/tool/cv/ytag.js600.0 s0 B
s.yimg.jp/images/listing/tool/cv/ytag.js600.0 s0 B
s.yimg.jp/images/listing/tool/cv/ytag.js600.0 s0 B
s.yimg.jp/images/listing/tool/cv/ytag.js600.0 s0 B
s.yimg.jp/images/listing/tool/cv/ytag.js600.0 s0 B
s.yimg.jp/images/listing/tool/cv/ytag.js600.0 s0 B
s.yimg.jp/images/listing/tool/cv/ytag.js600.0 s0 B
s.yimg.jp/images/listing/tool/cv/ytag.js600.0 s0 B
s.yimg.jp/images/listing/tool/cv/ytag.js600.0 s0 B
s.yimg.jp/images/listing/tool/cv/ytag.js600.0 s0 B
d.line-scdn.net/n/line_tag/public/release/v1/lt.js1992055.0 s0 B
d.line-scdn.net/n/line_tag/public/release/v1/lt.js1992055.0 s0 B
d.line-scdn.net/n/line_tag/public/release/v1/lt.js1992055.0 s0 B
d.line-scdn.net/n/line_tag/public/release/v1/lt.js1992055.0 s0 B
d.line-scdn.net/n/line_tag/public/release/v1/lt.js1992055.0 s0 B
cdn.smartnews-ads.com/i/pixel.js150.0 s0 B
cdn.smartnews-ads.com/i/pixel.js150.0 s0 B
tags.creativecdn.com/L52n0153rTKlxZFwgXDs.js3600.0 s0 B
tags.creativecdn.com/dSUgiq2sfddqypCVjN3V.js3600.0 s0 B
tags.creativecdn.com/dSUgiq2sfddqypCVjN3V.js3600.0 s0 B

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:0.192802] map[node:map[boundingRect:map[bottom:783 height:176 left:0 right:412 top:607 width:412] lhId:page-15-DIV nodeLabel:注目のイベント すべて見る path:1,HTML,1,BODY,21,DIV selector:body > div snippet:<div irc="Race" data-target-id="4" data-source-id="4" data-background-color="" data-default-content="[ { &quot;a&quot;: &quot;0&quot;, &quot;b&quot;: &quot;https://r.r10s.jp/com/img/thumb/200309…"> type:node] score:0.077859 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:64 height:64 left:0 right:412 top:0 width:412] lhId:page-0-IMG nodeLabel:div > div.ad-banner--1HCUr > a > img.image--1H40I path:1,HTML,1,BODY,1,DIV,0,DIV,0,A,0,IMG selector:div > div.ad-banner--1HCUr > a > img.image--1H40I snippet:<img class="image--1H40I loading--2tNI_ r-image--tmv1s" src="https://r.r10s.jp/com/img/global/newuser_sp_ichiba-top_1080x168_en.png" alt="" style="width: 100%; height: auto;"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:783 height:176 left:0 right:412 top:607 width:412] lhId:page-15-DIV nodeLabel:注目のイベント すべて見る path:1,HTML,1,BODY,21,DIV selector:body > div snippet:<div irc="Race" data-target-id="4" data-source-id="4" data-background-color="" data-default-content="[ { &quot;a&quot;: &quot;0&quot;, &quot;b&quot;: &quot;https://r.r10s.jp/com/img/thumb/200309…"> type:node] score:0.043802] map[node:map[boundingRect:map[bottom:783 height:176 left:0 right:412 top:607 width:412] lhId:page-15-DIV nodeLabel:注目のイベント すべて見る path:1,HTML,1,BODY,21,DIV selector:body > div snippet:<div irc="Race" data-target-id="4" data-source-id="4" data-background-color="" data-default-content="[ { &quot;a&quot;: &quot;0&quot;, &quot;b&quot;: &quot;https://r.r10s.jp/com/img/thumb/200309…"> type:node] score:0.043802 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:416 height:64 left:0 right:412 top:352 width:412] lhId:page-2-IMG nodeLabel:div > a > p > img path:1,HTML,1,BODY,17,DIV,1,DIV,0,A,0,P,0,IMG selector:div > a > p > img snippet:<img alt="" src="https://cdn.rmc.contents.rakuten.co.jp/block/d40535ac09aac0ef32f8a23b8bb8e…" width="100%" style="display: block;"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:783 height:176 left:0 right:412 top:607 width:412] lhId:page-15-DIV nodeLabel:注目のイベント すべて見る path:1,HTML,1,BODY,21,DIV selector:body > div snippet:<div irc="Race" data-target-id="4" data-source-id="4" data-background-color="" data-default-content="[ { &quot;a&quot;: &quot;0&quot;, &quot;b&quot;: &quot;https://r.r10s.jp/com/img/thumb/200309…"> type:node] score:0.018383] map[node:map[boundingRect:map[bottom:661 height:59 left:210 right:400 top:602 width:190] lhId:page-20-BUTTON nodeLabel:Rakuten AIで探す path:1,HTML,1,BODY,20,DIV,0,BUTTON selector:body > div > button.button--KbrYN snippet:<button data-position="bottom-right" class="button--KbrYN" style="--label-width: 130.109375px; --button-offset-bottom: 150px;"> type:node] score:0.000917]]

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:41.448 source:map[column:711625 line:2 type:source-location url:https://r.r10s.jp/com/js/service/app/pages/top/javascript/touch-00a95f13955d8aa9a908.bundle.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:176.96 source:map[column:899974 line:1 type:source-location url:https://r.r10s.jp/com/js/service/app/pages/top/javascript/vendors-00a95f13955d8aa9a908.bundle.js urlProvider:network]] map[reflowTime:52.532 source:map[column:433383 line:1 type:source-location url:https://r.r10s.jp/com/js/service/app/pages/top/javascript/vendors-00a95f13955d8aa9a908.bundle.js urlProvider:network]] map[reflowTime:1.653 source:map[column:104142 line:1 type:source-location url:https://r.r10s.jp/com/js/service/app/pages/top/javascript/touch-00a95f13955d8aa9a908.bundle.js urlProvider:network]] map[reflowTime:0.749 source:map[column:105006 line:1 type:source-location url:https://r.r10s.jp/com/js/service/app/pages/top/javascript/touch-00a95f13955d8aa9a908.bundle.js urlProvider:network]] map[reflowTime:0.682 source:map[column:1.362218e+06 line:1 type:source-location url:https://r.r10s.jp/com/js/service/app/pages/top/javascript/touch-00a95f13955d8aa9a908.bundle.js urlProvider:network]] map[reflowTime:0.594 source:map[column:724585 line:1 type:source-location url:https://r.r10s.jp/com/js/service/app/pages/top/javascript/touch-00a95f13955d8aa9a908.bundle.js urlProvider:network]] map[reflowTime:10.513 source:map[column:423522 line:1 type:source-location url:https://r.r10s.jp/com/js/service/app/pages/top/javascript/vendors-00a95f13955d8aa9a908.bundle.js urlProvider:network]] map[reflowTime:2.351 source:map[column:184793 line:1 type:source-location url:https://r.r10s.jp/com/js/service/app/pages/top/javascript/touch-00a95f13955d8aa9a908.bundle.js urlProvider:network]] map[reflowTime:1.316 source:map[column:185040 line:1 type:source-location url:https://r.r10s.jp/com/js/service/app/pages/top/javascript/touch-00a95f13955d8aa9a908.bundle.js urlProvider:network]] map[reflowTime:7.79 source:map[column:435670 line:1 type:source-location url:https://r.r10s.jp/com/js/service/app/pages/top/javascript/vendors-00a95f13955d8aa9a908.bundle.js urlProvider:network]] map[reflowTime:0.827 source:map[column:24107 line:1 type:source-location url:https://r.r10s.jp/com/js/service/app/pages/top/javascript/vendors-00a95f13955d8aa9a908.bundle.js urlProvider:network]] map[reflowTime:1.604 source:map[column:12470 line:1 type:source-location url:https://r.r10s.jp/com/js/service/app/pages/top/javascript/touch-00a95f13955d8aa9a908.bundle.js 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 > div.ad-banner--1HCUr > a > img.image--1H40I div > div.ad-banner--1HCUr > a > img.image--1H40I
r.r10s.jp/com/img/global/newuser_sp_ichiba-top_1080x168_en.png43.6 KiB30.5 KiB
div.container--17oFq > div > a > img.image--1H40I div.container--17oFq > div > a > img.image--1H40I
/com/img/UXP/202406/js-banner-top/d5f6fbd1-6112-4286-83d5...19.7 KiB15.1 KiB
div > a > p > img div > a > p > img
/block/d40535ac09aac0ef32f8a23b8bb8e04bc2e8f9d6b0981fa98a...26.7 KiB14.8 KiB
r.r10s.jp/com/inc/home/20080930/ris/img/pitari_mno/emg_mnotop_sp_1080x168.png26.1 KiB14.5 KiB
a.link-wrapper--1G0sw > div.container--3tUHo > div.aspect-ratio-box--14W6l > img.image--aJFXw a.link-wrapper--1G0sw > div.container--3tUHo > div.aspect-ratio-box--14W6l > img.image--aJFXw
/com/img/EMP/202604/352f076c-80d0-49cd-8fb3-236ca09559a3-...21.1 KiB13.1 KiB
div.container--17oFq > div > a > img.image--1H40I div.container--17oFq > div > a > img.image--1H40I
/com/img/EMP/202603/86d67644-75a9-4ab3-b60c-7c8b90212bdd-...15.1 KiB10.8 KiB
div.container--17oFq > div > a > img.image--1H40I div.container--17oFq > div > a > img.image--1H40I
/com/img/EMP/202603/2a21b67f-7200-4c02-af00-c8b8fd38e19e-...13.0 KiB9.3 KiB
div.container--17oFq > div > a > img.image--1H40I div.container--17oFq > div > a > img.image--1H40I
/com/img/EMP/202603/e63a3cd4-60a9-4832-9fdb-76a4fd091aae-...10.8 KiB7.7 KiB
div.swiper-slide > a.link--3Wnxp > span.label--173G7 > img.image--1H40I div.swiper-slide > a.link--3Wnxp > span.label--173G7 > img.image--1H40I
/com/img/EMP/202603/a7cd1507-709a-4448-a24d-fd6580cc86af-...31.3 KiB7.1 KiB
div#ecosystem_bnr > a > p > img div#ecosystem_bnr > a > p > img
r.r10s.jp/com/img/home/smart/top/ecosystem/bnr/202512/ich_sp_rmb.png20.2 KiB6.9 KiB
div.swiper-slide > a.link--3Wnxp > span.label--173G7 > img.image--1H40I div.swiper-slide > a.link--3Wnxp > span.label--173G7 > img.image--1H40I
/com/img/EMP/202603/94741de6-b2da-41a8-8f0b-e57aaa2f1dff-...31.0 KiB6.8 KiB
div.container--17oFq > div > a > img.image--1H40I div.container--17oFq > div > a > img.image--1H40I
/com/img/EMP/202603/f47d21ce-2d8a-4841-a352-b128a353489f-...8.9 KiB6.3 KiB

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:1498.747 label:Time to first byte subpart:timeToFirstByte] map[duration:3567.885 label:Resource load delay subpart:resourceLoadDelay] map[duration:10.636 label:Resource load duration subpart:resourceLoadDuration] map[duration:117.7 label:Element render delay subpart:elementRenderDelay]]
lhId: page-11-IMG
nodeLabel: div.swiper-slide > a.link--3Wnxp > span.label--173G7 > img.image--1H40I
path: 1,HTML,1,BODY,18,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,A,0,SPAN,0,IMG
selector: div.swiper-slide > a.link--3Wnxp > span.label--173G7 > img.image--1H40I
snippet: <img class="image--1H40I jumbotron--1bNlT loading--2tNI_ r-image--tmv1s" src="https://r.r10s.jp/com/img/EMP/202603/a7cd1507-709a-4448-a24d-fd6580cc86af-…" alt="" style="min-height: 116px;">

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-11-IMG
nodeLabel: div.swiper-slide > a.link--3Wnxp > span.label--173G7 > img.image--1H40I
path: 1,HTML,1,BODY,18,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,A,0,SPAN,0,IMG
selector: div.swiper-slide > a.link--3Wnxp > span.label--173G7 > img.image--1H40I
snippet: <img class="image--1H40I jumbotron--1bNlT loading--2tNI_ r-image--tmv1s" src="https://r.r10s.jp/com/img/EMP/202603/a7cd1507-709a-4448-a24d-fd6580cc86af-…" alt="" style="min-height: 116px;">

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
value: no origins were preconnected
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
r.r10s.jp/com/js/service/app/pages/top/css/touch-00a95f13955d8aa9a908.bundle.css84.8 KiB1.2 s
r.r10s.jp/com/ap/target/phoenix-2.7.2.min.js8.9 KiB
www.rakuten.co.jp/com/tls/tls.js212 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
/com/js/service/resources/ichiba-icon-font54c5cedc4f7e4a8...10 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: 1.6 s
URLTime Spent
rakuten.co.jp/1.6 s
www.rakuten.co.jp/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
注目のイベント すべて見る body > div
0.078
注目のイベント すべて見る body > div
0.044
注目のイベント すべて見る body > div
0.044
注目のイベント すべて見る body > div
0.018
Rakuten AIで探す body > div > button.button--KbrYN
0.001
Rakuten AIで探す body > div > button.button--KbrYN
0.001
button div.container--3jcGU > div#top-area > div.top-row--QN2vt > div.top-row-right--1F8Nv
0.001
Rakuten AIで探す body > div > button.button--KbrYN
0.001
Rakuten AIで探す body > div > button.button--KbrYN
0.000
Rakuten AIで探す body > div > button.button--KbrYN
0.000
Rakuten AIで探す body > div > button.button--KbrYN
0.000
Rakuten AIで探す body > div > button.button--KbrYN
0.000
Rakuten AIで探す body > div > button.button--KbrYN
0.000
Rakuten AIで探す body > div > button.button--KbrYN
0.000
Rakuten AIで探す body > div > button.button--KbrYN
0.000

Diagnostics

Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 300 ms 81.4 KiB
URLTransfer SizeEst Savings
r.r10s.jp/com/js/service/app/pages/top/css/touch-00a95f13955d8aa9a908.bundle.css84.5 KiB81.4 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: 2.7 s 2.9 MiB
URLTransfer SizeEst Savings
/com/js/service/app/pages/top/javascript/touch-00a95f1395...635.1 KiB169.4 KiB
/com/js/service/app/pages/top/javascript/vendors-00a95f13...272.3 KiB159.6 KiB
s-cdn.rmp.rakuten.co.jp/js/cd.js120.0 KiB87.1 KiB
s-cdn.rmp.rakuten.co.jp/js/cd.js120.0 KiB87.1 KiB
s-cdn.rmp.rakuten.co.jp/js/cd.js120.0 KiB87.1 KiB
s-cdn.rmp.rakuten.co.jp/js/cd.js120.0 KiB87.1 KiB
analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwOQ.js120.6 KiB69.5 KiB
analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwOQ.js120.6 KiB69.3 KiB
analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwOQ.js120.6 KiB65.0 KiB
analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMQ.js109.0 KiB59.6 KiB
www.googletagmanager.com/gtag/js?id=DC-10275646129.3 KiB59.6 KiB
www.googletagmanager.com/gtag/js?id=AW-11379161587144.4 KiB58.5 KiB
analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMA.js105.4 KiB57.4 KiB
analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMA.js105.4 KiB57.4 KiB
analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMA.js105.4 KiB57.1 KiB
www.googletagmanager.com/gtag/js?id=AW-17351696522144.3 KiB56.3 KiB
analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMA.js105.4 KiB56.2 KiB
www.googletagmanager.com/gtag/js?id=AW-604227436128.9 KiB56.0 KiB
www.googletagmanager.com/gtag/js?id=AW-16568667236137.4 KiB55.5 KiB
www.googletagmanager.com/gtag/js?id=AW-10785709492144.7 KiB55.3 KiB
www.googletagmanager.com/gtag/js?id=AW-17689400065137.3 KiB55.3 KiB
www.googletagmanager.com/gtag/js?id=AW-604209422137.1 KiB55.2 KiB
www.googletagmanager.com/gtag/js?id=AW-604160289137.1 KiB55.2 KiB
www.googletagmanager.com/gtag/js?id=AW-366523017134.0 KiB55.0 KiB
www.googletagmanager.com/gtag/js?id=AW-428190572133.9 KiB55.0 KiB
www.googletagmanager.com/gtag/js?id=AW-604241884143.4 KiB54.6 KiB
www.googletagmanager.com/gtag/js?id=AW-974491288146.3 KiB54.4 KiB
www.googletagmanager.com/gtag/js?id=AW-428117166136.3 KiB54.1 KiB
www.googletagmanager.com/gtag/js?id=AW-976680299144.5 KiB53.9 KiB
www.googletagmanager.com/gtag/js?id=AW-783587133144.0 KiB52.9 KiB
www.googletagmanager.com/gtag/js?id=AW-393863666137.0 KiB52.4 KiB
www.googletagmanager.com/gtag/js?id=AW-17892296232137.3 KiB52.2 KiB
s-cdn.rmp.rakuten.co.jp/js/aa.js102.3 KiB50.8 KiB
connect.facebook.net/en_US/fbevents.js96.3 KiB40.9 KiB
connect.facebook.net/en_US/fbevents.js96.3 KiB40.9 KiB
connect.facebook.net/en_US/fbevents.js96.3 KiB40.9 KiB
/signals/config/2102918640517656?v=2.9.298&r=stable&domai...126.7 KiB37.5 KiB
/signals/config/25069282142772105?v=2.9.298&r=stable&doma...126.7 KiB37.5 KiB
/signals/config/1389856708696550?v=2.9.298&r=stable&domai...126.7 KiB37.5 KiB
/signals/config/4355369038068620?v=2.9.298&r=stable&domai...126.7 KiB37.5 KiB
/signals/config/1308629997445925?v=2.9.298&r=stable&domai...126.8 KiB37.3 KiB
/signals/config/1389856708696550?v=2.9.298&r=stable&domai...126.7 KiB37.2 KiB
/signals/config/875304955236868?v=2.9.298&r=stable&domain...126.8 KiB37.1 KiB
/sdk/webcx-web-blocks/2.73.0/webcx-web-blocks.production....99.3 KiB36.4 KiB
connect.facebook.net/en_US/fbevents.js96.3 KiB34.9 KiB
connect.facebook.net/en_US/fbevents.js96.3 KiB34.9 KiB
connect.facebook.net/en_US/fbevents.js96.3 KiB34.9 KiB
connect.facebook.net/en_US/fbevents.js96.3 KiB34.9 KiB
connect.facebook.net/en_US/fbevents.js96.3 KiB34.9 KiB
connect.facebook.net/en_US/fbevents.js96.3 KiB34.6 KiB
connect.facebook.net/en_US/fbevents.js96.3 KiB34.2 KiB
connect.facebook.net/en_US/fbevents.js96.3 KiB34.2 KiB
connect.facebook.net/en_US/fbevents.js96.3 KiB34.1 KiB

Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to reduce Javascript execution time.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTotal CPU TimeScript EvaluationScript Parse
/com/js/service/app/pages/top/javascript/vendors-00a95f13...25.6 s7.7 s157 ms
Unattributable12.9 s1.1 s0.0 ms
www.rakuten.co.jp/11.7 s6.7 ms1.9 ms
grp15.ias.rakuten.co.jp/gw.js?v=24.9 s4.5 s98 ms
connect.facebook.net/en_US/fbevents.js2.5 s1.8 s582 ms
analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMA.js1.1 s868 ms238 ms
analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwOQ.js855 ms631 ms204 ms
/com/js/service/app/pages/top/javascript/touch-00a95f1395...719 ms170 ms246 ms
/signals/config/1389856708696550?v=2.9.298&r=stable&domai...703 ms590 ms110 ms
analytics.tiktok.com/i18n/pixel/static/identify_5cff1caf.js689 ms517 ms155 ms
/sdk/webcx-web-blocks/2.73.0/webcx-web-blocks.production....658 ms522 ms44 ms
/com/js/service/app/pages/top/javascript/main-00a95f13955...501 ms497 ms3.3 ms
/signals/config/875304955236868?v=2.9.298&r=stable&domain...495 ms334 ms57 ms
www.googletagmanager.com/gtag/js?id=AW-428117166469 ms289 ms51 ms
/event?a=%5B44566%2C87771%2C120796%5D&v=5.46.0&p0=e%3Dexd...464 ms357 ms7.6 ms
s.yimg.jp/images/listing/tool/cv/ytag.js446 ms366 ms72 ms
www.googletagmanager.com/gtag/js?id=AW-393863666431 ms298 ms50 ms
www.googletagmanager.com/gtag/js?id=AW-783587133400 ms343 ms52 ms
www.googletagmanager.com/gtag/js?id=AW-976680299374 ms316 ms54 ms
www.googletagmanager.com/gtag/js?id=AW-974491288374 ms320 ms49 ms
static.criteo.net/js/ld/ld.js374 ms331 ms27 ms
www.googletagmanager.com/gtag/js?id=AW-17892296232370 ms294 ms71 ms
www.googletagmanager.com/gtag/js?id=AW-604241884367 ms310 ms52 ms
www.googletagmanager.com/gtag/js?id=AW-10785709492359 ms300 ms54 ms
/signals/config/2102918640517656?v=2.9.298&r=stable&domai...359 ms299 ms57 ms
www.googletagmanager.com/gtag/js?id=AW-17351696522347 ms291 ms53 ms
/signals/config/4355369038068620?v=2.9.298&r=stable&domai...342 ms283 ms55 ms
/signals/config/1308629997445925?v=2.9.298&r=stable&domai...338 ms279 ms57 ms
/signals/config/25069282142772105?v=2.9.298&r=stable&doma...336 ms279 ms53 ms
www.googletagmanager.com/gtag/js?id=AW-17689400065334 ms276 ms53 ms
www.googletagmanager.com/gtag/js?id=AW-604160289329 ms278 ms46 ms
www.googletagmanager.com/gtag/js?id=AW-366523017325 ms273 ms49 ms
www.googletagmanager.com/gtag/js?id=AW-11379161587321 ms267 ms51 ms
www.googletagmanager.com/gtag/js?id=AW-604209422317 ms268 ms45 ms
www.googletagmanager.com/gtag/js?id=AW-428190572304 ms251 ms49 ms
www.googletagmanager.com/gtag/js?id=AW-16568667236303 ms256 ms44 ms
www.googletagmanager.com/gtag/js?id=AW-604227436288 ms240 ms45 ms
analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMQ.js278 ms208 ms64 ms
www.googletagmanager.com/gtag/js?id=DC-10275646261 ms213 ms45 ms
s-cdn.rmp.rakuten.co.jp/js/aa.js252 ms216 ms15 ms
d.line-scdn.net/n/line_tag/public/release/v1/lt.js249 ms216 ms28 ms
r.r10s.jp/com/rat/js/ral-1.10.1.js208 ms156 ms4.3 ms
dynamic.criteo.com/js/ld/ld.js?a=44566&a=87771&a=120796203 ms187 ms9.0 ms
static.ads-twitter.com/uwt.js183 ms158 ms20 ms
/signals/config/149307711579983?v=2.9.298&r=stable&domain...152 ms123 ms28 ms
s-cdn.rmp.rakuten.co.jp/js/cd.js151 ms93 ms56 ms
/signals/config/1114717489487974?v=2.9.298&r=stable&domai...150 ms125 ms24 ms
www.rakuten.co.jp/akam/13/62eb75e0149 ms124 ms6.1 ms
jscdn.appier.net/aa.js?id=rakuten.co.jp147 ms121 ms14 ms
/event?a=91422&v=5.46.0&p0=e%3Dexd%26site_type%3Dm&p1=e%3...130 ms82 ms2.8 ms
/event?a=3242&v=5.46.0&p0=e%3Dexd%26site_type%3Dm&p1=e%3D...115 ms79 ms2.9 ms
cdn.smartnews-ads.com/i/pixel.js105 ms96 ms5.8 ms
r.r10s.jp/com/js/service/app/pages/top/css/touch-00a95f13955d8aa9a908.bundle.css74 ms0.0 ms0.0 ms
ias.r10s.jp/grp15/lib/ichiba_frame.js?v=2017013064 ms61 ms2.2 ms
r.r10s.jp/com/ap/target/phoenix-2.7.2.min.js63 ms31 ms14 ms
tags.creativecdn.com/dSUgiq2sfddqypCVjN3V.js62 ms57 ms2.9 ms
bat.bing.com/bat.js52 ms43 ms7.1 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
Other35.2 s
Script Evaluation29.0 s
Script Parsing & Compilation3.5 s
Rendering3.1 s
Style & Layout2.9 s
Garbage Collection1.2 s
Parse HTML & CSS507 ms

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
/com/js/service/app/pages/top/javascript/touch-00a95f1395...642.4 KiB
/com/js/service/app/pages/top/javascript/vendors-00a95f13...272.4 KiB
www.googletagmanager.com/gtag/js?id=AW-974491288146.3 KiB
www.googletagmanager.com/gtag/js?id=AW-10785709492144.7 KiB
www.googletagmanager.com/gtag/js?id=AW-976680299144.5 KiB
www.googletagmanager.com/gtag/js?id=AW-11379161587144.4 KiB
www.googletagmanager.com/gtag/js?id=AW-17351696522144.4 KiB
www.googletagmanager.com/gtag/js?id=AW-783587133144.3 KiB
www.googletagmanager.com/gtag/js?id=AW-604241884143.5 KiB
www.googletagmanager.com/gtag/js?id=AW-16568667236137.4 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
div > div.ad-banner--1HCUr > a > img.image--1H40I div > div.ad-banner--1HCUr > a > img.image--1H40I
r.r10s.jp/com/img/global/newuser_sp_ichiba-top_1080x168_en.png
div > a > p > img div > a > p > img
/block/d40535ac09aac0ef32f8a23b8bb8e04bc2e8f9d6b0981fa98a...
div.swiper-slide > a.link--3Wnxp > span.label--173G7 > img.image--1H40I div.swiper-slide > a.link--3Wnxp > span.label--173G7 > img.image--1H40I
/com/img/EMP/202604/73d3ac2c-cd0c-44ff-affe-22a68ce20cd9-...
div.swiper-slide > a.link--3Wnxp > span.label--173G7 > img.image--1H40I div.swiper-slide > a.link--3Wnxp > span.label--173G7 > img.image--1H40I
/com/img/EMP/202603/a7cd1507-709a-4448-a24d-fd6580cc86af-...
div.swiper-slide > a.link--3Wnxp > span.label--173G7 > img.image--1H40I div.swiper-slide > a.link--3Wnxp > span.label--173G7 > img.image--1H40I
/com/img/EMP/202603/94741de6-b2da-41a8-8f0b-e57aaa2f1dff-...
div.swiper-slide > a.link--3Wnxp > span.label--173G7 > img.image--1H40I div.swiper-slide > a.link--3Wnxp > span.label--173G7 > img.image--1H40I
/com/img/EMP/202604/73d3ac2c-cd0c-44ff-affe-22a68ce20cd9-...
div.swiper-slide > a.link--3Wnxp > span.label--173G7 > img.image--1H40I div.swiper-slide > a.link--3Wnxp > span.label--173G7 > img.image--1H40I
/com/img/EMP/202603/a7cd1507-709a-4448-a24d-fd6580cc86af-...
div#ecosystem_bnr > a > p > img div#ecosystem_bnr > a > p > img
r.r10s.jp/com/img/home/smart/top/ecosystem/bnr/202512/ich_sp_rmb.png
div.container--G4ZgU > div.spacer--3hYb9 > div.spacer--3hYb9 > img.image--1H40I div.container--G4ZgU > div.spacer--3hYb9 > div.spacer--3hYb9 > img.image--1H40I
r.r10s.jp/com/img/thumb/logo/ichiba_top_footer_r-rogo.svg
div.spacer--3hYb9 > div.spacer--3hYb9 > a > img.image--1H40I div.spacer--3hYb9 > div.spacer--3hYb9 > a > img.image--1H40I
r.r10s.jp/com/img/thumb/logo/sp_logo_footer_gogreen.svg

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

●Optimize DOM size
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●User Timing marks and measures 111 user timings
●Avoid long main-thread tasks 20 long tasks found
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 330 ms
●Server Backend Latencies 1,630 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 340 ms
○INP breakdown
○Avoid non-composited animations
70

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
Show cart div.top-row--QN2vt > div.top-row-right--1F8Nv > div.spacer--3hYb9 > a.button--1YPpl
ログイン div.button-group-wrapper--1BnbG > div.container--1f9KH > div.container-link--1V2xO > a.button--1YPpl
会員登録 div.button-group-wrapper--1BnbG > div.container--1f9KH > div.container-link--1V2xO > a.button--1YPpl
お気に入り div > div.container--3snA3 > div.main-buttons--3fWkN > a.button--1YPpl
閲覧履歴 div > div.container--3snA3 > div.main-buttons--3fWkN > a.button--1YPpl
購入履歴 div > div.container--3snA3 > div.main-buttons--3fWkN > a.button--1YPpl
myクーポン div > div.container--3snA3 > div.main-buttons--3fWkN > a.button--1YPpl
ログイン div.container--2grkW > div.spacer--3hYb9 > div.spacer--3hYb9 > a.button--1YPpl
新規会員登録はこちら div.container--2grkW > div.spacer--3hYb9 > div.registration-link--nRfc4 > a.button--1YPpl
すべて見る div.title-wrapper--1eivO > div.sub-title-wrapper--zI_Bz > div > a.button--1YPpl
ご利用ガイド div.container--y7h8c > div.container--G4ZgU > div.spacer--3hYb9 > a.button--1YPpl
ヘルプ div.container--y7h8c > div.container--G4ZgU > div.spacer--3hYb9 > a.button--1YPpl

When an element doesn't have an accessible name, screen readers announce it with a generic name, making it unusable for users who rely on screen readers. Learn how to make command elements more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
body > div > div.etsy-banner--1r0bv > div body > div > div.etsy-banner--1r0bv > div
body > div > div.etsy-banner--1r0bv > div.close-button-container--1Nt3j body > div > div.etsy-banner--1r0bv > div.close-button-container--1Nt3j
div.top-row--QN2vt > div.top-row-left--3YyH1 > div.spacer--3hYb9 > div.hamburger-container--3ZHwt div.top-row--QN2vt > div.top-row-left--3YyH1 > div.spacer--3hYb9 > div.hamburger-container--3ZHwt

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.

Contrast

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
掲載アイテム全品20%以上OFF！ a.container--gpVqv > div.content--3IBRF > div.content-text--1aLnW > div.text-display--2HKHe
まとめ買いでさらにお得！ a.container--gpVqv > div.content--3IBRF > div.content-text--1aLnW > div.text-display--2HKHe
必見！注目アイテムをチェック a.container--gpVqv > div.content--3IBRF > div.content-text--1aLnW > div.text-display--2HKHe

These are opportunities to improve the legibility of your content.

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
a.link-wrapper--1G0sw > div.container--3tUHo > div.aspect-ratio-box--14W6l > img.image--aJFXw a.link-wrapper--1G0sw > div.container--3tUHo > div.aspect-ratio-box--14W6l > img.image--aJFXw

Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
body > div > div.ad-banner--1HCUr > a body > div > div.ad-banner--1HCUr > a
body > div#mkdiv_header_pitari > div > a body > div#mkdiv_header_pitari > div > a
div.swiper-container > div.swiper-wrapper > div.swiper-slide > a.link--3Wnxp div.swiper-container > div.swiper-wrapper > div.swiper-slide > a.link--3Wnxp
div.swiper-container > div.swiper-wrapper > div.swiper-slide > a.link--3Wnxp div.swiper-container > div.swiper-wrapper > div.swiper-slide > a.link--3Wnxp
div.swiper-container > div.swiper-wrapper > div.swiper-slide > a.link--3Wnxp div.swiper-container > div.swiper-wrapper > div.swiper-slide > a.link--3Wnxp
div.swiper-container > div.swiper-wrapper > div.swiper-slide > a.link--3Wnxp div.swiper-container > div.swiper-wrapper > div.swiper-slide > a.link--3Wnxp
div.swiper-container > div.swiper-wrapper > div.swiper-slide > a.link--3Wnxp div.swiper-container > div.swiper-wrapper > div.swiper-slide > a.link--3Wnxp
div.free--3104i > div.container--17oFq > div > a div.free--3104i > div.container--17oFq > div > a
div.swiper-slide > div.container--17oFq > div > a div.swiper-slide > div.container--17oFq > div > a
div.swiper-slide > div.container--17oFq > div > a div.swiper-slide > div.container--17oFq > div > a
div.swiper-slide > div.container--17oFq > div > a div.swiper-slide > div.container--17oFq > div > a
div.swiper-slide > div.container--17oFq > div > a div.swiper-slide > div.container--17oFq > div > a
body > div > div.spacer--3hYb9 > a.link-wrapper--1G0sw body > div > div.spacer--3hYb9 > a.link-wrapper--1G0sw
body > div > div#ecosystem_bnr > a body > div > div#ecosystem_bnr > a
div.container--G4ZgU > div.spacer--3hYb9 > div.spacer--3hYb9 > a div.container--G4ZgU > div.spacer--3hYb9 > div.spacer--3hYb9 > a

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

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

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
新規会員登録はこちら div.container--2grkW > div.spacer--3hYb9 > div.registration-link--nRfc4 > a.button--1YPpl
Language div.spacer--3hYb9 > div > span.reference--1AAIT > button.button--1YPpl

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-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
●Form elements have associated labels
●ARIA attributes are used as specified for the element's role
●`[aria-hidden="true"]` elements do not contain focusable descendents
●Elements use only permitted ARIA attributes
●Document has a `<title>` element
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●No element has a `[tabindex]` value greater than 0
●Deprecated ARIA roles were not used
●The page contains a heading, skip link, or landmark region
●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 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
○`<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
○Heading elements appear in a sequentially-descending order
○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
○Input buttons have discernible text.
○`<input type="image">` elements have `[alt]` text
○Links are distinguishable without relying on color.
○Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
○List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
○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.
○`[lang]` attributes have a valid value
○`<video>` elements contain a `<track>` element with `[kind="captions"]`
○Tables have different content in the summary attribute and `<caption>`.
○All heading elements contain content.
○Uses ARIA roles only on compatible elements
○Image elements do not have `[alt]` attributes that are redundant text.
○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.
○`<td>` elements in a large `<table>` have one or more table headers.
77

Best Practices

General

Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / WarningSource
AttributionReporting
connect.facebook.net/en_US/fbevents.js line 279, col 769

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
user-attributes.api.rakuten.co.jp/capi/v1/ecosys/user.json?acc=1&aid=43&attr=111
Failed to load resource: the server responded with a status of 401 ()
●Uses HTTPS
●Avoids third-party cookies
●Allows users to paste into input fields
●Avoids requesting the geolocation permission on page load
●Avoids requesting the notification permission on page load
●Displays images with correct aspect ratio
●Serves images with appropriate resolution
●Page has the HTML doctype
●Properly defines charset
●No issues in the `Issues` panel in Chrome Devtools
●Ensure CSP is effective against XSS attacks
●Use a strong HSTS policy
●Ensure proper origin isolation with COOP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
●Page has valid source maps
○Redirects HTTP traffic to HTTPS
○Mitigate clickjacking with XFO or CSP
85

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

If your robots.txt file is malformed, crawlers may not be able to understand how you want your website to be crawled or indexed. Learn more about robots.txt.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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
a.link-wrapper--1G0sw > div.container--3tUHo > div.aspect-ratio-box--14W6l > img.image--aJFXw a.link-wrapper--1G0sw > div.container--3tUHo > div.aspect-ratio-box--14W6l > img.image--aJFXw

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
●Links are crawlable
●Document has a valid `hreflang`
●Document has a valid `rel=canonical`

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