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

Audit breakdown by category with detailed findings.

55

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
peraichi.com/img/top/bg_pc_main.png0.0 ms2.7 MiB
peraichi.com/img/top/main-slide-3-pc.png0.0 ms2.6 MiB
peraichi.com/img/top/main-slide-2-pc.png0.0 ms2.1 MiB
peraichi.com/img/top/main-slide-5-pc.png0.0 ms1.5 MiB
peraichi.com/img/top/main-slide-1-pc.png0.0 ms1.5 MiB
peraichi.com/img/top/bg_introduction_pc.png0.0 ms1.2 MiB
peraichi.com/img/top/pc_1.png0.0 ms1.1 MiB
peraichi.com/img/top/main-slide-6-pc.png0.0 ms1.1 MiB
peraichi.com/img/top/3.gif0.0 ms668.5 KiB
peraichi.com/img/top/main-slide-4-pc.png0.0 ms606.7 KiB
peraichi.com/img/top/1.gif0.0 ms601.3 KiB
peraichi.com/img/top/pc_3.png0.0 ms599.4 KiB
peraichi.com/img/top/main-slide-3-sp.png0.0 ms570.5 KiB
peraichi.com/img/top/pc_2.png0.0 ms506.6 KiB
peraichi.com/img/top/main-slide-2-sp.png0.0 ms385.0 KiB
peraichi.com/img/top/main-slide-5-sp.png0.0 ms372.2 KiB
peraichi.com/img/top/main-slide-6-sp.png0.0 ms362.9 KiB
peraichi.com/img/top/main-slide-1-sp.png0.0 ms357.5 KiB
peraichi.com/img/top/temp5_hotel_sm.png0.0 ms182.7 KiB
peraichi.com/img/top/temp4_netshop_sm.png0.0 ms177.7 KiB
peraichi.com/img/top/temp2_beauty_sm.png0.0 ms168.2 KiB
peraichi.com/css/common.css?17767534620.0 ms163.7 KiB
peraichi.com/img/top/temp7_portfolio_sm.png0.0 ms149.8 KiB
peraichi.com/img/top/main-slide-4-sp.png0.0 ms131.3 KiB
peraichi.com/img/top/temp2_pc.png0.0 ms124.1 KiB
peraichi.com/img/top/temp7_pc.png0.0 ms114.1 KiB
peraichi.com/img/top/temp1_cake_sm.png0.0 ms110.0 KiB
peraichi.com/img/top/temp5_pc.png0.0 ms100.6 KiB
peraichi.com/img/top/temp5_sp.png0.0 ms87.7 KiB
/signals/config/3806078839613932?v=2.9.303&r=stable&domai...1200.0 s97.0 KiB
connect.facebook.net/en_US/fbevents.js1200.0 s96.6 KiB
peraichi.com/img/top/temp8_pc.png0.0 ms81.3 KiB
peraichi.com/img/top/temp7_sm.png0.0 ms75.7 KiB
peraichi.com/img/top/temp3_pc.png0.0 ms75.4 KiB
peraichi.com/img/top/temp1_pc.png0.0 ms73.3 KiB
peraichi.com/img/top/temp2_sm.png0.0 ms72.6 KiB
peraichi.com/img/top/temp4_pc.png0.0 ms72.0 KiB
peraichi.com/img/top/temp3_sm.png0.0 ms71.1 KiB
connect.facebook.net/ja_JP/bundle/sdk.js/1200.0 s77.9 KiB
peraichi.com/img/top/temp8_sp.png0.0 ms66.9 KiB
peraichi.com/img/top/temp2_sp.png0.0 ms63.0 KiB
peraichi.com/img/top/temp4_sm.png0.0 ms62.6 KiB
peraichi.com/img/top/temp1_sp.png0.0 ms53.5 KiB
peraichi.com/img/top/2.gif0.0 ms53.1 KiB
peraichi.com/img/top/temp3_sp.png0.0 ms51.0 KiB
peraichi.com/img/top/img_member_milestone.png0.0 ms50.4 KiB
peraichi.com/img/top/temp7_sp.png0.0 ms50.2 KiB
peraichi.com/img/top/temp6_form_sm.png0.0 ms48.3 KiB
peraichi.com/img/top/temp4_sp.png0.0 ms45.2 KiB
peraichi.com/js/front_all.js?17767533450.0 ms43.8 KiB
peraichi.com/img/top/temp1_sm.png0.0 ms43.0 KiB
/signals/config/1019818098525170?v=2.9.303&r=stable&domai...1200.0 s46.7 KiB
peraichi.com/img/top/feature3_2.png0.0 ms39.9 KiB
peraichi.com/img/top/temp6_pc.png0.0 ms32.8 KiB
peraichi.com/img/top/feature2_1.png0.0 ms30.6 KiB
peraichi.com/img/top/feature3_1.png0.0 ms30.3 KiB
cdn.mxpnl.com/libs/mixpanel-2-latest.min.js600.0 s31.7 KiB
scripts.clarity.ms/0.8.59/clarity.js0.0 ms26.1 KiB
peraichi.com/img/top/university_wifi.png0.0 ms25.2 KiB
peraichi.com/img/top/temp6_sp.png0.0 ms24.6 KiB
platform.twitter.com/widgets.js1800.0 s27.3 KiB
peraichi.com/img/top/feature3_3.png0.0 ms22.4 KiB
peraichi.com/img/top/feature_2.png0.0 ms22.0 KiB
peraichi.com/img/top/temp6_sm.png0.0 ms20.4 KiB
peraichi.com/img/top/feature_3.png0.0 ms19.2 KiB
peraichi.com/js/libs/slick.min.js0.0 ms17.2 KiB
peraichi.com/img/top/feature_1.png0.0 ms16.7 KiB
www.google-analytics.com/analytics.js7200.0 s20.9 KiB
/signals/config/1506882067186661?v=2.9.303&r=stable&domai...1200.0 s17.0 KiB
www.rentracks.jp/js/itp/rt.track.js?t=17768932565730.0 ms14.7 KiB
/signals/config/1569870679986757?v=2.9.303&r=stable&domai...1200.0 s16.4 KiB
peraichi.com/img/top/URL.png0.0 ms14.0 KiB
peraichi.com/img/top/top_icon_shopping_cart_bg-white.svg0.0 ms12.2 KiB
s.yimg.jp/images/listing/tool/cv/ytag.js600.0 s11.8 KiB
statics.a8.net/a8sales/a8sales.js0.0 ms9.7 KiB
peraichi.com/img/top/top_icon_form_bg-white.svg0.0 ms6.5 KiB
static.hotjar.com/c/hotjar-2705207.js?sv=660.0 s6.2 KiB
connect.facebook.net/ja_JP/sdk.js#xfbml=1&version=v2.8&appId=14952773240770591200.0 s5.1 KiB
peraichi.com/js/libs/remodal.min.js?17767533450.0 ms3.8 KiB
peraichi.com/js/common.js?17767533450.0 ms3.3 KiB
r.moshimo.com/af/r/maftag.js0.0 ms2.8 KiB
peraichi.com/js/page_top.js0.0 ms2.7 KiB
peraichi.com/img/top/top_icon_calendar.svg0.0 ms2.6 KiB
peraichi.com/js/libs/ofi.min.js0.0 ms2.2 KiB
peraichi.com/img/top/2.png0.0 ms2.1 KiB
peraichi.com/img/top/3.png0.0 ms1.9 KiB
peraichi.com/css/slick.css?17767533440.0 ms1.1 KiB
peraichi.com/images/top_settings.png604800.0 s8.7 KiB
peraichiapp.com/js/libs/google_tag_manager.js0.0 ms698 B
peraichi.com/images/logo.svg604800.0 s6.8 KiB
peraichi.com/img/top/1.png0.0 ms558 B
peraichi.com/images/top_create_page.png604800.0 s5.1 KiB
peraichi.com/images/top_txt_free_for_one_month.png604800.0 s5.1 KiB
peraichi.com/images/top_html_css.png604800.0 s4.7 KiB
peraichi.com/images/top_scroll_inline.png604800.0 s3.3 KiB
/tr/?id=1019818098525170&ev=PageView&dl=https%3A%2F%2Fper...0.0 ms18 B
/tr/?id=3806078839613932&ev=PageView&dl=https%3A%2F%2Fper...0.0 ms16 B
/tr/?id=3806078839613932&ev=PageView&dl=https%3A%2F%2Fper...0.0 ms16 B
/tr/?id=1569870679986757&ev=PageView&dl=https%3A%2F%2Fper...0.0 ms16 B
/tr/?id=1506882067186661&ev=PageView&dl=https%3A%2F%2Fper...0.0 ms16 B

Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLEst Savings
/font-awesome/4.6.3/fonts/fontawesome-webfont.woff2?v=4.6.360 ms

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
ペライチの特長 3 div.slick-list > div.slick-track > li#slick-slide42 > img
peraichi.com/img/top/main-slide-3-pc.png2.6 MiB2.6 MiB
初期費用0円、ページ完成までわずか30分 ホームページ作成は ペライチ いますぐ始める 1 2 3 4 5 6 body._fallback_style > div.content > div.p-top-new-mainvisual
peraichi.com/img/top/bg_pc_main.png2.7 MiB2.2 MiB
ペライチの特長 2 div.slick-list > div.slick-track > li#slick-slide41 > img
peraichi.com/img/top/main-slide-2-pc.png2.1 MiB2.1 MiB
ペライチの特長 5 div.slick-list > div.slick-track > li#slick-slide44 > img
peraichi.com/img/top/main-slide-5-pc.png1.5 MiB1.5 MiB
ペライチの特長 1 div.slick-list > div.slick-track > li#slick-slide40 > img
peraichi.com/img/top/main-slide-1-pc.png1.5 MiB1.4 MiB
ペライチの特長 6 div.slick-list > div.slick-track > li#slick-slide45 > img
peraichi.com/img/top/main-slide-6-pc.png1.1 MiB1.1 MiB
ペライチの特長 4 div.slick-list > div.slick-track > li#slick-slide43 > img
peraichi.com/img/top/main-slide-4-pc.png605.7 KiB569.0 KiB
div.p-top-new-features__first-template__container > div.p-top-new-features__first-template--ads > div > img div.p-top-new-features__first-template__container > div.p-top-new-features__first-template--ads > div > img
peraichi.com/img/top/1.gif600.4 KiB502.3 KiB
Features of Peraichi ペライチのサービスの特長 専門知識は必要なし カンタン操作で本格的なホームページを作成 ペライチを利用するために… body._fallback_style > div.content > div#feature-1
peraichi.com/img/top/pc_1.png1.1 MiB314.7 KiB
Slider Image div.p-top-new__slider-wrapper > ul.p-top-new__slider-list > li > img
peraichi.com/img/top/temp5_hotel_sm.png182.2 KiB175.4 KiB
Slider Image div.p-top-new__slider-wrapper > ul.p-top-new__slider-list > li > img
peraichi.com/img/top/temp4_netshop_sm.png177.2 KiB170.4 KiB
Slider Image div.p-top-new__slider-wrapper > ul.p-top-new__slider-list > li > img
peraichi.com/img/top/temp2_beauty_sm.png167.7 KiB160.9 KiB
Slider Image div.p-top-new__slider-wrapper > ul.p-top-new__slider-list > li > img
peraichi.com/img/top/temp7_portfolio_sm.png149.4 KiB142.6 KiB
事例 div.p-top-new-feature__example-pages__page-container > div.p-top-new-feature__example-pages__page-bezel > div.p-top-new-feature__example-pages__img-container > img.p-top-new-feature__example-pages__img
peraichi.com/img/top/temp2_pc.png123.7 KiB110.7 KiB
Slider Image div.p-top-new__slider-wrapper > ul.p-top-new__slider-list > li > img
peraichi.com/img/top/temp1_cake_sm.png109.5 KiB102.8 KiB
事例 div.p-top-new-feature__example-pages__page-container > div.p-top-new-feature__example-pages__page-bezel > div.p-top-new-feature__example-pages__img-container > img.p-top-new-feature__example-pages__img
peraichi.com/img/top/temp7_pc.png113.6 KiB100.6 KiB
事例 div.p-top-new-feature__example-pages__page-container > div.p-top-new-feature__example-pages__page-bezel > div.p-top-new-feature__example-pages__img-container > img.p-top-new-feature__example-pages__img
peraichi.com/img/top/temp5_pc.png100.1 KiB87.1 KiB
事例 div.p-top-new-feature__example-pages__page-container > div.p-top-new-feature__example-pages__page-bezel > div.p-top-new-feature__example-pages__img-container > img.p-top-new-feature__example-pages__img
peraichi.com/img/top/temp8_pc.png80.9 KiB67.9 KiB
div.u-pt-md > div > div.img-wrapper > img div.u-pt-md > div > div.img-wrapper > img
peraichi.com/img/top/temp7_sm.png75.3 KiB66.8 KiB
div.u-pt-md > div > div.img-wrapper > img div.u-pt-md > div > div.img-wrapper > img
peraichi.com/img/top/temp2_sm.png72.2 KiB63.8 KiB
div.u-pt-md > div > div.img-wrapper > img div.u-pt-md > div > div.img-wrapper > img
peraichi.com/img/top/temp3_sm.png70.7 KiB62.2 KiB
事例 div.p-top-new-feature__example-pages__page-container > div.p-top-new-feature__example-pages__page-bezel > div.p-top-new-feature__example-pages__img-container > img.p-top-new-feature__example-pages__img
peraichi.com/img/top/temp3_pc.png75.0 KiB61.9 KiB
事例 div.p-top-new-feature__example-pages__page-container > div.p-top-new-feature__example-pages__page-bezel > div.p-top-new-feature__example-pages__img-container > img.p-top-new-feature__example-pages__img
peraichi.com/img/top/temp1_pc.png72.9 KiB59.9 KiB
事例 div.p-top-new-feature__example-pages__page-container > div.p-top-new-feature__example-pages__page-bezel > div.p-top-new-feature__example-pages__img-container > img.p-top-new-feature__example-pages__img
peraichi.com/img/top/temp4_pc.png71.6 KiB58.6 KiB
div.u-pt-md > div > div.img-wrapper > img div.u-pt-md > div > div.img-wrapper > img
peraichi.com/img/top/temp4_sm.png62.2 KiB53.8 KiB
Member Milestone div.p-top-new-mainvisual > div.p-top-new-mainvisual__container > div.p-top-new-mainvisual__main-slider > img.p-top-new-mainvisual__img-label
peraichi.com/img/top/img_member_milestone.png50.0 KiB46.3 KiB
Slider Image div.p-top-new__slider-wrapper > ul.p-top-new__slider-list > li > img
peraichi.com/img/top/temp6_form_sm.png47.9 KiB41.1 KiB
div.u-pt-md > div > div.img-wrapper > img div.u-pt-md > div > div.img-wrapper > img
peraichi.com/img/top/temp1_sm.png42.6 KiB34.2 KiB
事例 div.p-top-new-feature__example-pages__page-container > div.p-top-new-feature__example-pages__page-bezel > div.p-top-new-feature__example-pages__img-container > img.p-top-new-feature__example-pages__img
peraichi.com/img/top/temp6_pc.png32.5 KiB19.4 KiB
Feature 2 a > div.p-top-new-overview__func-item > div.p-top-new-overview__func-item--img > img
peraichi.com/img/top/feature_2.png21.7 KiB13.2 KiB
div.u-pt-md > div > div.img-wrapper > img div.u-pt-md > div > div.img-wrapper > img
peraichi.com/img/top/temp6_sm.png20.1 KiB11.6 KiB
Feature 3 a > div.p-top-new-overview__func-item > div.p-top-new-overview__func-item--img > img
peraichi.com/img/top/feature_3.png18.9 KiB11.1 KiB
Feature 1 a > div.p-top-new-overview__func-item > div.p-top-new-overview__func-item--img > img
peraichi.com/img/top/feature_1.png16.4 KiB9.9 KiB
div.p-top-new-features__first-template__container > div.p-top-new-features__first-template--url > div.u-flex > img div.p-top-new-features__first-template__container > div.p-top-new-features__first-template--url > div.u-flex > img
peraichi.com/img/top/URL.png13.7 KiB5.3 KiB
1ヶ月間無料 div.p-top-new-mainvisual__content > div.p-top-new-mainvisual__sub-text--pc > div.u-block-center > img
peraichi.com/images/top_txt_free_for_one_month.png4.7 KiB4.0 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:984.369 label:Time to first byte subpart:timeToFirstByte] map[duration:1954.306 label:Resource load delay subpart:resourceLoadDelay] map[duration:2469.48 label:Resource load duration subpart:resourceLoadDuration] map[duration:77.246 label:Element render delay subpart:elementRenderDelay]]
lhId: page-1-DIV
nodeLabel: 初期費用0円、ページ完成までわずか30分 ホームページ作成は ペライチ いますぐ始める 1 2 3 4 5 6
path: 1,HTML,1,BODY,3,DIV,0,DIV
selector: body._fallback_style > div.content > div.p-top-new-mainvisual
snippet: <div class="p-top-new-mainvisual">

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-1-DIV
nodeLabel: 初期費用0円、ページ完成までわずか30分 ホームページ作成は ペライチ いますぐ始める 1 2 3 4 5 6
path: 1,HTML,1,BODY,3,DIV,0,DIV
selector: body._fallback_style > div.content > div.p-top-new-mainvisual
snippet: <div class="p-top-new-mainvisual">

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
peraichi.com/css/common.css?1776753462163.7 KiB431 ms
peraichi.com/js/front_all.js?177675334543.8 KiB173 ms
peraichiapp.com/js/libs/google_tag_manager.js698 B871 ms
fonts.googleapis.com/css?family=Noto+Sans+JP:400,500&display=swap59.8 KiB419 ms
maxcdn.bootstrapcdn.com/font-awesome/4.6.3/css/font-awesome.min.css7.0 KiB264 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

Keep the server response time for the main document short because all other requests depend on it. Learn more about the Time to First Byte metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 879 ms
URLTime Spent
peraichi.com/979 ms

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: 260 ms 215.0 KiB
URLTransfer SizeEst Savings
peraichi.com/css/common.css?1776753462163.4 KiB155.6 KiB
fonts.googleapis.com/css?family=Noto+Sans+JP:400,500&display=swap59.3 KiB59.3 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: 730 ms 890.2 KiB
URLTransfer SizeEst Savings
www.googletagmanager.com/gtag/js?id=AW-17668541560144.2 KiB106.0 KiB
www.googletagmanager.com/gtag/js?id=G-VS0Y19WXJC&cx=c&gtm=4e64k0173.4 KiB70.2 KiB
www.googletagmanager.com/gtag/destination?id=AW-941828060&cx=c&gtm=4e64k0144.4 KiB68.9 KiB
/gtm/js?id=OPT-TQQS8DB&t=gtag_UA_58464770_2&cid=352285829...111.8 KiB68.3 KiB
www.googletagmanager.com/gtm.js?id=GTM-NGS6QVQ3&gtm=4e64k0148.5 KiB66.5 KiB
www.googletagmanager.com/gtm.js?id=GTM-MWJNCFXF119.3 KiB66.3 KiB
www.googletagmanager.com/gtag/js?id=G-FT0P1X38TQ&cx=c&gtm=4e64k0172.4 KiB65.7 KiB
www.googletagmanager.com/gtag/js?id=G-250757919&cx=c&gtm=4e64k0136.5 KiB64.8 KiB
www.googletagmanager.com/gtag/js?id=UA-58464770-2116.4 KiB61.6 KiB
www.googletagmanager.com/gtag/destination?id=AW-17668541560&cx=c&gtm=4e64k0144.2 KiB61.4 KiB
www.googletagmanager.com/gtm.js?id=GTM-WR9XQH177.2 KiB60.1 KiB
connect.facebook.net/ja_JP/bundle/sdk.js/77.8 KiB46.3 KiB
connect.facebook.net/en_US/fbevents.js96.5 KiB31.6 KiB
/signals/config/3806078839613932?v=2.9.303&r=stable&domai...96.9 KiB26.4 KiB
script.hotjar.com/modules.6a0f3932cb1341a35c18.js56.1 KiB26.0 KiB

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 Evaluation1.3 s
Other575 ms
Style & Layout465 ms
Script Parsing & Compilation181 ms
Rendering75 ms
Garbage Collection43 ms
Parse HTML & CSS30 ms

Many navigations are performed by going back to a previous page, or forwards again. The back/forward cache (bfcache) can speed up these return navigations. Learn more about the bfcache

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reasonFailure type
Pages with WebSocket cannot enter back/forward cache.Pending browser support

Minifying CSS files can reduce network payload sizes. Learn how to minify CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 6.2 KiB
URLTransfer SizeEst Savings
fonts.googleapis.com/css?family=Noto+Sans+JP:400,500&display=swap59.8 KiB6.2 KiB

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: 0.0 ms 6.2 KiB
URLTransfer SizeEst Savings
www.rentracks.jp/js/itp/rt.track.js?t=177689325657314.3 KiB6.2 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
peraichi.com/img/top/bg_pc_main.png2.7 MiB
peraichi.com/img/top/main-slide-3-pc.png2.6 MiB
peraichi.com/img/top/main-slide-2-pc.png2.1 MiB
peraichi.com/img/top/main-slide-5-pc.png1.5 MiB
peraichi.com/img/top/main-slide-1-pc.png1.5 MiB
peraichi.com/img/top/bg_introduction_pc.png1.2 MiB
peraichi.com/img/top/pc_1.png1.1 MiB
peraichi.com/img/top/main-slide-6-pc.png1.1 MiB
peraichi.com/img/top/3.gif668.5 KiB
peraichi.com/img/top/main-slide-4-pc.png606.7 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
ペライチの特長 1 div.slick-list > div.slick-track > li#slick-slide40 > img
peraichi.com/img/top/main-slide-1-pc.png
ペライチの特長 2 div.slick-list > div.slick-track > li#slick-slide41 > img
peraichi.com/img/top/main-slide-2-pc.png
ペライチの特長 3 div.slick-list > div.slick-track > li#slick-slide42 > img
peraichi.com/img/top/main-slide-3-pc.png
ペライチの特長 4 div.slick-list > div.slick-track > li#slick-slide43 > img
peraichi.com/img/top/main-slide-4-pc.png
ペライチの特長 5 div.slick-list > div.slick-track > li#slick-slide44 > img
peraichi.com/img/top/main-slide-5-pc.png
ペライチの特長 6 div.slick-list > div.slick-track > li#slick-slide45 > img
peraichi.com/img/top/main-slide-6-pc.png
div > div.p-top-new-features__second--option > div > img div > div.p-top-new-features__second--option > div > img
peraichi.com/img/top/2.gif
div > div.p-top-new-features__second--option > div > img div > div.p-top-new-features__second--option > div > img
peraichi.com/img/top/3.gif
div.p-top-new-features__first-template__container > div.p-top-new-features__first-template--ads > div > img div.p-top-new-features__first-template__container > div.p-top-new-features__first-template--ads > div > img
peraichi.com/img/top/1.gif
Slider Image div.p-top-new__slider-wrapper > ul.p-top-new__slider-list > li > img
peraichi.com/img/top/temp4_netshop_sm.png
Slider Image div.p-top-new__slider-wrapper > ul.p-top-new__slider-list > li > img
peraichi.com/img/top/temp5_hotel_sm.png
Slider Image div.p-top-new__slider-wrapper > ul.p-top-new__slider-list > li > img
peraichi.com/img/top/temp6_form_sm.png
Slider Image div.p-top-new__slider-wrapper > ul.p-top-new__slider-list > li > img
peraichi.com/img/top/temp1_cake_sm.png
Slider Image div.p-top-new__slider-wrapper > ul.p-top-new__slider-list > li > img
peraichi.com/img/top/temp7_portfolio_sm.png
Slider Image div.p-top-new__slider-wrapper > ul.p-top-new__slider-list > li > img
peraichi.com/img/top/temp4_netshop_sm.png
Slider Image div.p-top-new__slider-wrapper > ul.p-top-new__slider-list > li > img
peraichi.com/img/top/temp5_hotel_sm.png
Slider Image div.p-top-new__slider-wrapper > ul.p-top-new__slider-list > li > img
peraichi.com/img/top/temp6_form_sm.png
Slider Image div.p-top-new__slider-wrapper > ul.p-top-new__slider-list > li > img
peraichi.com/img/top/temp1_cake_sm.png
Slider Image div.p-top-new__slider-wrapper > ul.p-top-new__slider-list > li > img
peraichi.com/img/top/temp7_portfolio_sm.png
Slider Image div.p-top-new__slider-wrapper > ul.p-top-new__slider-list > li > img
peraichi.com/img/top/temp4_netshop_sm.png
Slider Image div.p-top-new__slider-wrapper > ul.p-top-new__slider-list > li > img
peraichi.com/img/top/temp5_hotel_sm.png
Slider Image div.p-top-new__slider-wrapper > ul.p-top-new__slider-list > li > img
peraichi.com/img/top/temp6_form_sm.png
Slider Image div.p-top-new__slider-wrapper > ul.p-top-new__slider-list > li > img
peraichi.com/img/top/temp1_cake_sm.png
Slider Image div.p-top-new__slider-wrapper > ul.p-top-new__slider-list > li > img
peraichi.com/img/top/temp7_portfolio_sm.png
Slider Image div.p-top-new__slider-wrapper > ul.p-top-new__slider-list > li > img
peraichi.com/img/top/temp2_beauty_sm.png
Slider Image div.p-top-new__slider-wrapper > ul.p-top-new__slider-list > li > img
peraichi.com/img/top/temp2_beauty_sm.png
Slider Image div.p-top-new__slider-wrapper > ul.p-top-new__slider-list > li > img
peraichi.com/img/top/temp2_beauty_sm.png
div > div.p-top-new-features__second--option > div > img div > div.p-top-new-features__second--option > div > img
peraichi.com/img/top/feature2_1.png
div > div.p-top-new-features__third--option > div > img div > div.p-top-new-features__third--option > div > img
peraichi.com/img/top/feature3_3.png
div > div.p-top-new-features__third--option > div > img div > div.p-top-new-features__third--option > div > img
peraichi.com/img/top/feature3_2.png
div > div.p-top-new-features__third--option > div > img div > div.p-top-new-features__third--option > div > img
peraichi.com/img/top/feature3_1.png
事例 div.p-top-new-feature__example-pages__page-container > div.p-top-new-feature__example-pages__page-bezel > div.p-top-new-feature__example-pages__img-container > img.p-top-new-feature__example-pages__img
peraichi.com/img/top/temp5_pc.png
事例 div.p-top-new-feature__example-pages__page-container > div.p-top-new-feature__example-pages__page-bezel > div.p-top-new-feature__example-pages__img-container > img.p-top-new-feature__example-pages__img
peraichi.com/img/top/temp6_pc.png
事例 div.p-top-new-feature__example-pages__page-container > div.p-top-new-feature__example-pages__page-bezel > div.p-top-new-feature__example-pages__img-container > img.p-top-new-feature__example-pages__img
peraichi.com/img/top/temp7_pc.png
事例 div.p-top-new-feature__example-pages__page-container > div.p-top-new-feature__example-pages__page-bezel > div.p-top-new-feature__example-pages__img-container > img.p-top-new-feature__example-pages__img
peraichi.com/img/top/temp8_pc.png
事例 div.p-top-new-feature__example-pages__page-container > div.p-top-new-feature__example-pages__page-bezel > div.p-top-new-feature__example-pages__img-container > img.p-top-new-feature__example-pages__img
peraichi.com/img/top/temp1_pc.png
事例 div.p-top-new-feature__example-pages__page-container > div.p-top-new-feature__example-pages__page-bezel > div.p-top-new-feature__example-pages__img-container > img.p-top-new-feature__example-pages__img
peraichi.com/img/top/temp2_pc.png
事例 div.p-top-new-feature__example-pages__page-container > div.p-top-new-feature__example-pages__page-bezel > div.p-top-new-feature__example-pages__img-container > img.p-top-new-feature__example-pages__img
peraichi.com/img/top/temp3_pc.png
事例 div.p-top-new-feature__example-pages__page-container > div.p-top-new-feature__example-pages__page-bezel > div.p-top-new-feature__example-pages__img-container > img.p-top-new-feature__example-pages__img
peraichi.com/img/top/temp4_pc.png
事例 div.p-top-new-feature__example-pages__page-container > div.p-top-new-feature__example-pages__page-bezel > div.p-top-new-feature__example-pages__img-container > img.p-top-new-feature__example-pages__img
peraichi.com/img/top/temp5_pc.png
事例 div.p-top-new-feature__example-pages__page-container > div.p-top-new-feature__example-pages__page-bezel > div.p-top-new-feature__example-pages__img-container > img.p-top-new-feature__example-pages__img
peraichi.com/img/top/temp6_pc.png
事例 div.p-top-new-feature__example-pages__page-container > div.p-top-new-feature__example-pages__page-bezel > div.p-top-new-feature__example-pages__img-container > img.p-top-new-feature__example-pages__img
peraichi.com/img/top/temp7_pc.png
事例 div.p-top-new-feature__example-pages__page-container > div.p-top-new-feature__example-pages__page-bezel > div.p-top-new-feature__example-pages__img-container > img.p-top-new-feature__example-pages__img
peraichi.com/img/top/temp8_pc.png
事例 div.p-top-new-feature__example-pages__page-container > div.p-top-new-feature__example-pages__page-bezel > div.p-top-new-feature__example-pages__img-container > img.p-top-new-feature__example-pages__img
peraichi.com/img/top/temp1_pc.png
事例 div.p-top-new-feature__example-pages__page-container > div.p-top-new-feature__example-pages__page-bezel > div.p-top-new-feature__example-pages__img-container > img.p-top-new-feature__example-pages__img
peraichi.com/img/top/temp2_pc.png
事例 div.p-top-new-feature__example-pages__page-container > div.p-top-new-feature__example-pages__page-bezel > div.p-top-new-feature__example-pages__img-container > img.p-top-new-feature__example-pages__img
peraichi.com/img/top/temp3_pc.png
事例 div.p-top-new-feature__example-pages__page-container > div.p-top-new-feature__example-pages__page-bezel > div.p-top-new-feature__example-pages__img-container > img.p-top-new-feature__example-pages__img
peraichi.com/img/top/temp4_pc.png
事例 div.p-top-new-feature__example-pages__page-container > div.p-top-new-feature__example-pages__page-bezel > div.p-top-new-feature__example-pages__img-container > img.p-top-new-feature__example-pages__img
peraichi.com/img/top/temp5_pc.png
事例 div.p-top-new-feature__example-pages__page-container > div.p-top-new-feature__example-pages__page-bezel > div.p-top-new-feature__example-pages__img-container > img.p-top-new-feature__example-pages__img
peraichi.com/img/top/temp6_pc.png
事例 div.p-top-new-feature__example-pages__page-container > div.p-top-new-feature__example-pages__page-bezel > div.p-top-new-feature__example-pages__img-container > img.p-top-new-feature__example-pages__img
peraichi.com/img/top/temp7_pc.png
事例 div.p-top-new-feature__example-pages__page-container > div.p-top-new-feature__example-pages__page-bezel > div.p-top-new-feature__example-pages__img-container > img.p-top-new-feature__example-pages__img
peraichi.com/img/top/temp8_pc.png
div.p-top-new-features__first-template__container > div.p-top-new-features__first-template--url > div.u-flex > img div.p-top-new-features__first-template__container > div.p-top-new-features__first-template--url > div.u-flex > img
peraichi.com/img/top/URL.png
div.u-pt-md > div > div.img-wrapper > img div.u-pt-md > div > div.img-wrapper > img
peraichi.com/img/top/temp3_sm.png
div.u-pt-md > div > div.img-wrapper > img div.u-pt-md > div > div.img-wrapper > img
peraichi.com/img/top/temp7_sm.png
div.u-pt-md > div > div.img-wrapper > img div.u-pt-md > div > div.img-wrapper > img
peraichi.com/img/top/temp6_sm.png
div.u-pt-md > div > div.img-wrapper > img div.u-pt-md > div > div.img-wrapper > img
peraichi.com/img/top/temp1_sm.png
div.u-pt-md > div > div.img-wrapper > img div.u-pt-md > div > div.img-wrapper > img
peraichi.com/img/top/temp4_sm.png
Feature 2 a > div.p-top-new-overview__func-item > div.p-top-new-overview__func-item--img > img
peraichi.com/img/top/feature_2.png
div.u-pt-md > div > div.img-wrapper > img div.u-pt-md > div > div.img-wrapper > img
peraichi.com/img/top/temp2_sm.png
Feature 3 a > div.p-top-new-overview__func-item > div.p-top-new-overview__func-item--img > img
peraichi.com/img/top/feature_3.png
制作会社（業者）に依頼する div.p-top-new-university__items > div.p-top-new-university__item-wrapper > div.p-top-new-university__item > img
peraichi.com/images/top_settings.png
制作会社（業者）に依頼する div.p-top-new-university__items > div.p-top-new-university__item-wrapper > div.p-top-new-university__item > img
peraichi.com/images/top_html_css.png
Feature 1 a > div.p-top-new-overview__func-item > div.p-top-new-overview__func-item--img > img
peraichi.com/img/top/feature_1.png
制作会社（業者）に依頼する div.p-top-new-university__items > div.p-top-new-university__item-wrapper > div.p-top-new-university__item > img
peraichi.com/images/top_create_page.png
1ヶ月間無料 div.p-top-new-mainvisual__content > div.p-top-new-mainvisual__sub-text--pc > div.u-block-center > img
peraichi.com/images/top_txt_free_for_one_month.png
予約システム div.p-top-new-features__others--start > div.p-top-new-features__item > div.p-top-new-features__item-name > img.p-top-function__icon
peraichi.com/img/top/top_icon_calendar.svg
div.p-top-new-features__container > div.p-top-new-features__header > div.p-top-new-features__desc > img div.p-top-new-features__container > div.p-top-new-features__header > div.p-top-new-features__desc > img
peraichi.com/img/top/2.png
div.p-top-new-features__container > div.p-top-new-features__header > div.p-top-new-features__desc > img div.p-top-new-features__container > div.p-top-new-features__header > div.p-top-new-features__desc > img
peraichi.com/img/top/3.png
決済 div.p-top-new-features__others--start > div.p-top-new-features__item > div.p-top-new-features__item-name > img.p-top-function__icon
peraichi.com/img/top/top_icon_shopping_cart_bg-white.svg
フォーム div.p-top-new-features__others--start > div.p-top-new-features__item > div.p-top-new-features__item-name > img.p-top-function__icon
peraichi.com/img/top/top_icon_form_bg-white.svg
div.p-top-new-features__first-container > div.p-top-new-features__header > div.p-top-new-features__desc > img div.p-top-new-features__first-container > div.p-top-new-features__header > div.p-top-new-features__desc > img
peraichi.com/img/top/1.png
メルマガ配信 div.p-top-new-features__others--end > div.p-top-new-features__item > div.p-top-new-features__item-name > img.p-top-function__icon

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

●Max Potential First Input Delay 90 ms
●Layout shift culprits
●Optimize DOM size
●Forced reflow
●Modern HTTP
●Optimize viewport for mobile
●User Timing marks and measures 17 user timings
●JavaScript execution time 1.0 s
●Avoid long main-thread tasks 7 long tasks found
●Avoid non-composited animations 12 animated elements found
●Network Requests
●Network Round Trip Times 280 ms
●Server Backend Latencies 920 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Avoid multiple page redirects
●Avoid large layout shifts 5 layout shifts found
○INP breakdown
79

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.

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
ログイン div.l-header-upper > div.l-header-upper__container > div.l-header-upper__btns > a#header-service-in-btn-login
What's Peraichi? div.p-top-new-overview__container > div.p-top-new-overview__desc > div.p-top-new-overview__title > p.u-weight-bold
専門知識は必要なし！ div.p-top-new-overview__func-lists > a > div.p-top-new-overview__func-item > div.p-top-new-overview__func-item--note
カンタン操作で div.p-top-new-overview__func-item--img > div.p-top-new-overview__func-item--desc > h3 > span.p-top-new-overview__func-item--desc__secondary
アイデアをその場で形に！ div.p-top-new-overview__func-lists > a > div.p-top-new-overview__func-item > div.p-top-new-overview__func-item--note
わずか30分で div.p-top-new-overview__func-item--img > div.p-top-new-overview__func-item--desc > h3 > span.p-top-new-overview__func-item--desc__secondary
疑問も不安もその場で解消！ div.p-top-new-overview__func-lists > a > div.p-top-new-overview__func-item > div.p-top-new-overview__func-item--note
安心サポートで div.p-top-new-overview__func-item--img > div.p-top-new-overview__func-item--desc > h3 > span.p-top-new-overview__func-item--desc__secondary
ペライチ予約 div.p-top-new-features__item > div.p-top-new-features__item-name > div.p-top-new-features__item-main > p.u-color-primary
詳しく見る div.p-top-new-features__others--start > div.p-top-new-features__item > div.u-flex > a.p-top-common-button
ペライチ決済 div.p-top-new-features__item > div.p-top-new-features__item-name > div.p-top-new-features__item-main > p.u-color-primary
詳しく見る div.p-top-new-features__others--start > div.p-top-new-features__item > div.u-flex > a.p-top-common-button
フォーム div.p-top-new-features__item > div.p-top-new-features__item-name > div.p-top-new-features__item-main > p.u-color-primary
詳しく見る div.p-top-new-features__others--start > div.p-top-new-features__item > div.u-flex > a.p-top-common-button
＼こんなサイトも、あんなサイトも。自分だけのサイトが作れます！／ div.u-bgcolor-white > div.u-pb-md > div.u-pt-md > p.p-top-new-features__others--title
メルマガ配信 div.p-top-new-features__item > div.p-top-new-features__item-name > div.p-top-new-features__item-main > p.u-color-primary
詳しく見る div.p-top-new-features__others--end > div.p-top-new-features__item > div.u-flex > a.p-top-common-button
ペライチ公式note div.p-top-new-university > div.p-top-new-university__top > div.u-mt-md > a.c-btn
例えば、こんなコンテンツを発信しています div.p-top-new-university > div.p-top-new-university__bottom > div.p-top-new-university__bottom-title > span
2026.04.17 li.u-border-bottom > a.link--inherit > div.u-inline-block > span.u-color-gray-dark
2026.04.02 li.u-border-bottom > a.link--inherit > div.u-inline-block > span.u-color-gray-dark
2026.03.30 li.u-border-bottom > a.link--inherit > div.u-inline-block > span.u-color-gray-dark
2026.03.16 li.u-border-bottom > a.link--inherit > div.u-inline-block > span.u-color-gray-dark
2026.03.03 li.u-border-bottom > a.link--inherit > div.u-inline-block > span.u-color-gray-dark
ログイン body._fallback_style > footer#footer > div.u-align-center > a.link--underline
会員登録 body._fallback_style > footer#footer > div.u-align-center > a.link--underline
ペライチとは、株式会社ペライチが運営するホームページ作成サービスです。専門知識が無くてもスピーディかつ簡単にホームページが制作できます。ペライチの特徴は、直観… body._fallback_style > footer#footer > div.u-align-center > p.l-footer__overview-desc

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
div.u-pt-md > div > div.img-wrapper > img div.u-pt-md > div > div.img-wrapper > img
div.u-pt-md > div > div.img-wrapper > img div.u-pt-md > div > div.img-wrapper > img
div.u-pt-md > div > div.img-wrapper > img div.u-pt-md > div > div.img-wrapper > img
div.u-pt-md > div > div.img-wrapper > img div.u-pt-md > div > div.img-wrapper > img
div.u-pt-md > div > div.img-wrapper > img div.u-pt-md > div > div.img-wrapper > img
div.u-pt-md > div > div.img-wrapper > img div.u-pt-md > div > div.img-wrapper > img

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.

Tables and lists

Screen readers have a specific way of announcing lists. Ensuring proper list structure aids screen reader output. Learn more about proper list structure.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
1 2 3 4 5 6 div.p-top-new-mainvisual__container > div.p-top-new-mainvisual__main-slider > div.p-top-new-mainvisual__fv-pc > ul#js-top-new-fv-slider
1 2 3 4 5 6 7 8 div.p-top-new-features__first-template > div.p-top-new-features__first-template__container > div.p-top-new-feature__example-pages > ul#js-top-new-example-pages-slider

These are opportunities to improve the experience of reading tabular or list data using 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
ニュース div.col-xs-12 > ul.l-footer__nav-list > li > a
メンテナンス情報 li > ul.c-list > li > a
メディア掲載実績 li > ul.c-list > li > a
プレスキット li > ul.c-list > li > a
障害情報 li > ul.c-list > li > a

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
●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
●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
●`<frame>` or `<iframe>` elements have a title
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●Links have a discernible name
●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
●No element has a `[tabindex]` value greater than 0
●Heading elements appear in a sequentially-descending order
●Deprecated ARIA roles were not used
●Uses ARIA roles only on compatible elements
●Identical links have the same purpose.
●Elements with visible text labels have matching accessible names.
○`[accesskey]` values are unique
○`button`, `link`, and `menuitem` elements have accessible names
○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
○ARIA input fields have accessible names
○ARIA `meter` elements have accessible names
○ARIA `progressbar` elements have accessible names
○Elements with 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
○Form elements have associated labels
○Links are distinguishable without relying on color.
○The document does not use `<meta http-equiv="refresh">`
○`<object>` elements have alternate text
○Select elements have associated label elements.
○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.
○Image elements do not have `[alt]` attributes that are redundant text.
○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.
○`<td>` elements in a large `<table>` have one or more table headers.
73

Best Practices

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)
div.p-top-new-features__first-template__container > div.p-top-new-features__first-template--url > div.u-flex > img div.p-top-new-features__first-template__container > div.p-top-new-features__first-template--url > div.u-flex > img
peraichi.com/img/top/URL.png450 x 114 (3.95)470 x 114 (4.12)

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
peraichi.com/
Access to fetch at 'https://apm.yahoo.co.jp/rt/?p=3SKK308YFK&label=&ref=https%3A%2F%2Fperaichi.com%2F&rref=&pt=&item=&cat=&price=&quantity=&et_optout=false&r=1776893257.3989046&pvid=um0fxoz6pwrmoakd7hl&su=67d98b07-2b41-480f-833f-3007993577b4&__lt__cid_valid=false&_impl=ytag&brands=%22Chromium%22%3B%20v%3D%22147.0.7727.101%22%2C%20%22Not.A%2FBrand%22%3B%20v%3D%228.0.0.0%22&platform=%22macOS%22&platform_version=%2210.15.7%22' from origin 'https://peraichi.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
peraichi.com/
Access to fetch at 'https://apm.yahoo.co.jp/rt/?p=P1NZSIVW08&label=&ref=https%3A%2F%2Fperaichi.com%2F&rref=&pt=&item=&cat=&price=&quantity=&et_optout=false&r=1776893257.3981748&pvid=um0fxoz6pwrmoakd7hl&su=67d98b07-2b41-480f-833f-3007993577b4&__lt__cid_valid=false&_impl=ytag&brands=%22Chromium%22%3B%20v%3D%22147.0.7727.101%22%2C%20%22Not.A%2FBrand%22%3B%20v%3D%228.0.0.0%22&platform=%22macOS%22&platform_version=%2210.15.7%22' from origin 'https://peraichi.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
/rt/?p=3SKK308YFK&label=&ref=https%3A%2F%2Fperaichi.com%2...
Failed to load resource: net::ERR_FAILED
/rt/?p=P1NZSIVW08&label=&ref=https%3A%2F%2Fperaichi.com%2...
Failed to load resource: net::ERR_FAILED
●Uses HTTPS
●Avoids third-party cookies
●Allows users to paste into input fields
●Avoids requesting the geolocation permission on page load
●Avoids requesting the notification permission on page load
●Serves images with appropriate resolution
●Page has the HTML doctype
●Properly defines charset
●No issues in the `Issues` panel in Chrome Devtools
●Ensure CSP is effective against XSS attacks
●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

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
テンプレート … div.l-header-mobile-nav__menu > ul.l-header-mobile-nav__items > li.l-header-mobile-nav__menu-item > a.u-color-muted
機能一覧 … div.l-header-mobile-nav__menu > ul.l-header-mobile-nav__items > li.l-header-mobile-nav__menu-item > a.u-color-muted

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.u-pt-md > div > div.img-wrapper > img div.u-pt-md > div > div.img-wrapper > img
div.u-pt-md > div > div.img-wrapper > img div.u-pt-md > div > div.img-wrapper > img
div.u-pt-md > div > div.img-wrapper > img div.u-pt-md > div > div.img-wrapper > img
div.u-pt-md > div > div.img-wrapper > img div.u-pt-md > div > div.img-wrapper > img
div.u-pt-md > div > div.img-wrapper > img div.u-pt-md > div > div.img-wrapper > img
div.u-pt-md > div > div.img-wrapper > img div.u-pt-md > div > div.img-wrapper > img

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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