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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.

25

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
engage.chat-message.au.com/bannerFunction.js?v=commitHash:%20d099bd8&webmch=webm300.0 s371.5 KiB
use.typekit.net/bsm5vfo.js600.0 s363.1 KiB
/lptag/api/account/16820676/configuration/applications/ta...630.0 s119.2 KiB
connect.facebook.net/en_US/fbevents.js1200.0 s96.6 KiB
/signals/config/1695071264125840?v=2.9.303&r=stable&domai...1200.0 s45.0 KiB
frtn.socdm.com/tags/insight.js0.0 ms29.2 KiB
b99.yahoo.co.jp/pagead/conversion_async.js0.0 ms23.5 KiB
www.google-analytics.com/analytics.js7200.0 s20.3 KiB
cs.nakanohito.jp/b3/bi.js10800.0 s20.7 KiB
engage.chat-message.au.com/banner.js3600.0 s14.4 KiB
s.yimg.jp/images/listing/tool/cv/ytag.js600.0 s11.8 KiB
static.cdn-apple.com/businesschat/start-chat-button/2/index.js0.0 ms10.0 KiB
lptag.liveperson.net/tag/tag.js?site=16820676630.0 s10.7 KiB
/etc.clientlibs/au-com/clientlibs/clientlib-site/resource...86400.0 s16.1 KiB
img.macromill.com/js/us001201jhn/2000018703-bc/lognos.js0.0 ms4.3 KiB
cdn.d2-apps.net/js/tr.js0.0 ms3.2 KiB
www.notice.kddi.com/news/mainte/content/info/newsjs_use.js?_=17768997112290.0 ms2.5 KiB
sf.nazs.socdm.com/tg/nazs-client.min.js86400.0 s4.5 KiB
i.socdm.com/s/so_sg.js?sgid=828684327.0 s1.1 KiB
i.socdm.com/s/so_sg.js?sgid=625564327.0 s1.1 KiB
www.au.com/.rum/@adobe/helix-rum-js@%5E2/dist/micro.js3600.0 s1.1 KiB
/etc.clientlibs/au-com/clientlibs/clientlib-site/resource...86400.0 s1.5 KiB
/etc.clientlibs/au-com/clientlibs/clientlib-site/resource...86400.0 s1.2 KiB
t.contentsquare.net/uxa/bc9c08edd691d.js900.0 s521 B
/etc.clientlibs/au-com/clientlibs/clientlib-site/resource...86400.0 s717 B
/etc.clientlibs/au-com/clientlibs/clientlib-site/resource...86400.0 s684 B
/b/ss/dummy/1/JS-2.15.0/s73830168519133?AQB=1&ndh=1&pf=1&...600.0 s247 B
/etc.clientlibs/au-com/clientlibs/clientlib-site/resource...86400.0 s564 B
/etc.clientlibs/au-com/clientlibs/clientlib-site/resource...86400.0 s431 B
/tr/?id=1695071264125840&ev=PageView&dl=https%3A%2F%2Fwww...0.0 ms19 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.

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:34.138 source:map[column:375 line:84 type:source-location url:https://www.au.com/etc.clientlibs/au-com/clientlibs/jquery.lc-3f56e989e786c643b30d5668a97daa52-lc.min.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:83.444 source:map[column:309 line:14 type:source-location url:https://www.au.com/etc.clientlibs/au-com/clientlibs/jquery.lc-3f56e989e786c643b30d5668a97daa52-lc.min.js urlProvider:network]] map[reflowTime:101.644 source:map[column:291 line:116 type:source-location url:https://www.au.com/etc.clientlibs/au-com/clientlibs/jquery.lc-3f56e989e786c643b30d5668a97daa52-lc.min.js urlProvider:network]] map[reflowTime:0.532 source:map[column:390 line:116 type:source-location url:https://www.au.com/etc.clientlibs/au-com/clientlibs/jquery.lc-3f56e989e786c643b30d5668a97daa52-lc.min.js urlProvider:network]] map[reflowTime:0.439 source:map[column:496 line:116 type:source-location url:https://www.au.com/etc.clientlibs/au-com/clientlibs/jquery.lc-3f56e989e786c643b30d5668a97daa52-lc.min.js urlProvider:network]] map[reflowTime:13.052 source:map[column:331 line:14 type:source-location url:https://www.au.com/etc.clientlibs/au-com/clientlibs/jquery.lc-3f56e989e786c643b30d5668a97daa52-lc.min.js urlProvider:network]] map[reflowTime:0.519 source:map[column:443 line:121 type:source-location url:https://www.au.com/etc.clientlibs/au-com/clientlibs/jquery.lc-3f56e989e786c643b30d5668a97daa52-lc.min.js urlProvider:network]] map[reflowTime:0.93 source:map[column:252 line:174 type:source-location url:https://www.au.com/etc.clientlibs/au-com/clientlibs/jquery.lc-3f56e989e786c643b30d5668a97daa52-lc.min.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
バナー：auは、つながる体感No.1　日本史上初3連覇 div > a > span.view-sp > img
/content/dam/au-com/renew2024/img/primary/au/au_primary_2...550.1 KiB483.4 KiB
バナー：おトクな特典がたくさん！詳しくはこちら div > a > span.view-sp > img
/content/dam/au-com/renew2024/img/primary/au/au_primary_2...385.1 KiB318.4 KiB
災害対策への取り組みの詳細ページに遷移するバナー div > div.footerBannerContent > a > img.lazyload
/content/dam/au-com/renew2022/img/footer/to_bnr_009.png?s...318.4 KiB301.4 KiB
漫画×Vaundyのコラボソング動画ページに遷移するバナー div > div.footerBannerContent > a > img.lazyload
/content/dam/au-com/renew2022/img/footer/to_bnr_003.png?f...275.7 KiB258.7 KiB
RESPECT YOU, au auが目指す「おもしろいほうの未来」の実現に向けたパートナーとの活動を紹介します。 div > div#bland1Box > ul > li#bland1_1R
www.au.com/content/dam/au-com/renew2024/img/bg-bland3-sp.png?scl=1&fmt=png-alpha274.5 KiB228.6 KiB
おトクづくし！UQコスパ宣言！の詳細ページに遷移するバナー div > a > span.view-sp > img
/content/dam/au-com/renew2024/img/primary/uq/uq_primary_0...294.4 KiB227.8 KiB
バナー：au／UQからのご加入でApple Fitness+が最大3カ月間無料！ div.campaignSliderContent > div > a.icon-blank > img.lazyload
/content/dam/au-com/renew2022/img/campaign/to_campaign_16...236.7 KiB205.0 KiB
バナー：iPhone長期ご利用の方はおトク！対象のiPhoneへの機種変更で機種代金最大11,000円割引 div.campaignSliderContent > div > a > img.lazyload
/content/dam/au-com/renew2022/img/campaign/to_campaign_17...229.1 KiB197.5 KiB
バナー：子ども見守りGPS本体代金50％OFF div.campaignSliderContent > div > a.icon-blank > img.lazyload
/content/dam/au-com/renew2022/img/campaign/to_campaign_17...208.6 KiB177.0 KiB
バナー：auバリューリンクプラン div > a > span.view-sp > img
/content/dam/au-com/renew2024/img/primary/au/au_primary_2...238.2 KiB171.5 KiB
バナー：Google Pixel 10a機種変更おトク割 対象の料金プランと故障紛失サポート（有料）加入で機種代金最大22,000円割引 div > a > span.view-sp > img
/content/dam/au-com/renew2024/img/primary/au/au_primary_2...214.1 KiB147.4 KiB
KDDIトビラ 誰もが思いを実現できる社会を目指した取り組みを紹介するブランドメディアです。 div > div#bland1Box > ul > li#bland2R
/content/dam/au-com/renew2024/img/bg-bland12_sp_cfccc2083...188.1 KiB147.4 KiB
TV CM au三太郎や、意識高すぎ！高杉くんのCMを紹介します。 div > div#bland1Box > ul > li#bland1L
/content/dam/au-com/renew2024/img/bg-bland13-sp_e0e260643...181.6 KiB145.9 KiB
バナー：おトクが盛りだくさん！バリューUPチャレンジ div.campaignSliderContent > div > a > img.lazyload
/content/dam/au-com/renew2022/img/campaign/to_campaign_15...173.0 KiB141.3 KiB
バナー：下取りプログラム　使っていたスマホ下取りでおトク！ div.campaignSliderContent > div > a > img.lazyload
/content/dam/au-com/renew2022/img/campaign/to_campaign_11...171.5 KiB139.8 KiB
お客さまの声からの改善 お客さまの声からのサービス改善・向上の取り組みを紹介します。 div > div#bland1Box > ul > li#bland1_2R
www.au.com/content/dam/au-com/renew2024/img/bg-bland5-sp.png?scl=1&fmt=png-alpha169.1 KiB134.2 KiB
バナー：auだから、つながる安心。スマホと衛星の直接通信350万人！空が見えれば、どこでもつながる。au Starlink Direct div > a > span.view-sp > img
/content/dam/au-com/renew2024/img/primary/au/au_primary_2...195.2 KiB128.5 KiB
未来に向けたKDDIの取り組みの詳細ページに遷移するバナー div > div.footerBannerContent > a > img.lazyload
/content/dam/au-com/renew2022/img/footer/to_bnr_011_fc9ba...139.6 KiB122.6 KiB
バナー：auバリューリンク マネ活2 div > a > span.view-sp > img
/content/dam/au-com/renew2024/img/primary/au/au_primary_2...185.5 KiB118.9 KiB
未来に向けた取り組み パートナーとの共創を通じた、未来を担う人財の育成の活動を紹介します。 div > div#bland1Box > ul > li#bland2L
/content/dam/au-com/renew2024/img/bg-bland11_sp-2_9bfe3ed...143.0 KiB110.9 KiB
ゼロから自分で作るスマホプランpovo2.0の詳細ページに遷移するバナー div > a > span.view-sp > img
/content/dam/au-com/renew2024/img/primary/povo/po_primary...194.9 KiB110.3 KiB
バナー：UQ mobileからauへの乗りかえ（番号移行）がおトクです！ div.campaignSliderContent > div > a > img.lazyload
/content/dam/au-com/renew2022/img/campaign/to_campaign_07...127.5 KiB95.9 KiB
動画オンデマンドサービスLIBERARYの詳細ページに遷移するバナー div > div.footerBannerContent > a > img.lazyload
/content/dam/au-com/renew2022/img/footer/to_bnr_007.png?f...108.5 KiB91.5 KiB
スマホ習慣セルフチェック div > div.footerBannerContent > a > img.lazyload
/content/dam/au-com/renew2022/img/footer/to_bnr_012_e1874...88.5 KiB71.5 KiB
KDDIバーチャルミュージアムの詳細ページに遷移するバナー div > div.footerBannerContent > a > img.lazyload
www.au.com/content/dam/au-com/renew2022/img/to_bnr_188.jpg?scl=1&qlt=9075.4 KiB58.4 KiB
バナー：U18 バリュープラン div > a > span.view-sp > img
/content/dam/au-com/renew2024/img/primary/au/au_primary_2...124.4 KiB57.7 KiB
auスマホ教室の詳細ページに遷移するバナー div > div.footerBannerContent > a > img.lazyload
www.au.com/content/dam/au-com/renew2022/img/footer/to_bnr_006.jpg?scl=1&qlt=9062.0 KiB45.0 KiB
おもいでケータイ再起動の詳細ページに遷移するバナー div > div.footerBannerContent > a > img.lazyload
www.au.com/content/dam/au-com/renew2022/img/to_bnr_203.jpg?scl=1&qlt=9055.5 KiB38.5 KiB
auウェルネスの歩くだけで特典がもらえるサービスのページに遷移するバナー div > div.footerBannerContent > a > img.lazyload
/content/dam/au-com/renew2022/img/footer/to_bnr_005.png?f...50.9 KiB33.9 KiB
バナー：推しトク映画 Pontaパス会員は1,100円！ div.campaignSliderContent > div > a.icon-blank > img.lazyload
/content/dam/au-com/renew2022/img/campaign/to_campaign_17...61.7 KiB32.4 KiB
バナー：auユーザーなら Google AI Pro がおトク！ div.campaignSliderContent > div > a > img.lazyload
/content/dam/au-com/renew2022/img/campaign/to_campaign_17...49.4 KiB25.9 KiB
バナー：メルカリ配送料が最大4回全額メルカリポイントで還元　4月30日（木）まで div > a > span.view-sp > img
/content/dam/au-com/renew2024/img/primary/au/au_primary_2...91.7 KiB25.1 KiB
auの公式Instagram div.footerSocial > div.footerSocial-list > a.linkGroupHorizontality-link > img.img-responsive
www.au.com/content/dam/au-com/designs/icon/icon_footer_sns_instagram.png10.6 KiB9.6 KiB
KDDI div.footerSiteMap > div.footerLogo > a.footerLogo-logo > img.img-responsive
www.au.com/content/dam/au-com/designs/icon/footer_logo.png?fmt=png-alpha&scl=110.0 KiB8.1 KiB
おもしろい方の未来へ。 au div.au-header-smp > section#jsi-header > a.headerSmp-logo > img.img-responsive
www.au.com/content/dam/au-com/common/icon/au_logo_y.png?scl=1&fmt=png-alpha8.9 KiB7.2 KiB
div.button > a#maintenance-other-btn > span.cmp-button__text > ::after div.button > a#maintenance-other-btn > span.cmp-button__text > ::after
/etc.clientlibs/au-com/clientlibs/clientlib-site/resource...15.9 KiB6.6 KiB
副回線サービスの詳細ページに遷移するバナー div > div.footerBannerContent > a > img.lazyload
www.au.com/content/dam/au-com/renew2022/img/to_bnr_212.png?fmt=png-alpha&scl=116.0 KiB5.1 KiB
auの公式Facebook div.footerSocial > div.footerSocial-list > a.footerSocial-link > img.img-responsive
www.au.com/content/dam/au-com/designs/icon/icon_footer_sns_fb.png6.0 KiB5.0 KiB
auの公式LINE div.footerSocial > div.footerSocial-list > a.footerSocial-link > img.img-responsive
www.au.com/content/dam/au-com/designs/icon/icon_footer_sns_line.png5.4 KiB4.5 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:542.213 label:Time to first byte subpart:timeToFirstByte] map[duration:22.318 label:Resource load delay subpart:resourceLoadDelay] map[duration:630.104 label:Resource load duration subpart:resourceLoadDuration] map[duration:2491.447 label:Element render delay subpart:elementRenderDelay]]
lhId: page-39-IMG
nodeLabel: バナー：auだから、つながる安心。スマホと衛星の直接通信350万人！空が見えれば、どこでもつながる。au Starlink Direct
path: 1,HTML,1,BODY,4,DIV,0,DIV,6,DIV,0,DIV,0,DIV,0,SECTION,0,DIV,0,DIV,0,SECTION,0,DIV,5,DIV,0,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV,5,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,DIV,0,DIV,0,A,1,SPAN,0,IMG
selector: div > a > span.view-sp > img
snippet: <img src="/content/dam/au-com/renew2024/img/primary/au/au_primary_284_sp_6e8049918f1…" alt="バナー：auだから、つながる安心。スマホと衛星の直接通信350万人！空が見えれば、どこでもつながる。au Starlink Direct">

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-39-IMG
nodeLabel: バナー：auだから、つながる安心。スマホと衛星の直接通信350万人！空が見えれば、どこでもつながる。au Starlink Direct
path: 1,HTML,1,BODY,4,DIV,0,DIV,6,DIV,0,DIV,0,DIV,0,SECTION,0,DIV,0,DIV,0,SECTION,0,DIV,5,DIV,0,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV,5,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,DIV,0,DIV,0,A,1,SPAN,0,IMG
selector: div > a > span.view-sp > img
snippet: <img src="/content/dam/au-com/renew2024/img/primary/au/au_primary_284_sp_6e8049918f1…" alt="バナー：auだから、つながる安心。スマホと衛星の直接通信350万人！空が見えれば、どこでもつながる。au Starlink Direct">

Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

Why this matters

Performance issues directly impact user engagement and conversion rates.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.
title: Preconnected origins
description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.
title: Preconnect candidates

Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer SizeDuration
/etc.clientlibs/au-com/clientlibs/clientlib-dependencies....96.0 KiB603 ms
/etc.clientlibs/au-com/clientlibs/jquery.lc-3f56e989e786c...32.7 KiB151 ms
cdnjs.cloudflare.com/ajax/libs/jquery-migrate/3.4.0/jquery-migrate.min.js4.9 KiB783 ms
/etc.clientlibs/au-com/clientlibs/clientlib-dependencies....182 B
fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@100..900&display=swap30.2 KiB1.1 s
www.au.com/content/dam/au-com/renew2024/css/autop2024.css60.7 KiB452 ms
/etc.clientlibs/au-com/clientlibs/clientlib-site.lc-f8e08...84.0 KiB3.9 s
www.au.com/content/dam/au-com/common/css/parts.css91.1 KiB1.2 s
/etc.clientlibs/au-com/clientlibs/clientlib-base.lc-21dfc...7.8 KiB452 ms
www.au.com/content/dam/au-com/renew2022/css/important-notice-renovation.css2.4 KiB
www.au.com/content/dam/au-com/common/css/disaster-message.css487 B
www.au.com/content/dam/au-com/common/css/emergency.css251 B
www.au.com/content/dam/au-com/common/css/clientlib-base-add.css606 B
www.au.com/content/dam/au-com/patch/patch.css333 B
www.au.com/content/dam/au-com/renew2022/css/autop_disasterSubBoard_2022.css2.6 KiB151 ms
www.au.com/content/dam/au-com/patch/carousel-v2/carousel-v2.css334 B

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

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: 953 ms
URLTime Spent
au.com/953 ms
www.au.com/0.0 ms

The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Diagnostics

Minifying 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: 150 ms 23.8 KiB
URLTransfer SizeEst Savings
www.au.com/content/dam/au-com/common/css/parts.css91.1 KiB12.3 KiB
www.au.com/content/dam/au-com/renew2024/css/autop2024.css60.7 KiB8.3 KiB
fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@100..900&display=swap30.2 KiB3.1 KiB

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: 1.3 s 226.7 KiB
URLTransfer SizeEst Savings
www.au.com/content/dam/au-com/common/css/parts.css90.8 KiB90.8 KiB
/etc.clientlibs/au-com/clientlibs/clientlib-site.lc-f8e08...83.8 KiB81.8 KiB
fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@100..900&display=swap29.8 KiB29.8 KiB
www.au.com/content/dam/au-com/renew2024/css/autop2024.css60.4 KiB24.3 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: 4.2 s 1.8 MiB
URLTransfer SizeEst Savings
engage.chat-message.au.com/bannerFunction.js?v=commitHash:%20d099bd8&webmch=webm370.8 KiB339.2 KiB
/etc.clientlibs/au-com/clientlibs/clientlib-site.lc-8daae...350.2 KiB287.4 KiB
/le_unified_window/10.47.0-release_2318786578/mobileEmbed...262.8 KiB180.6 KiB
www.googletagmanager.com/gtm.js?id=GTM-KVC899J&gtm=4e64k1180.5 KiB80.3 KiB
/etc.clientlibs/au-com/clientlibs/clientlib-dependencies....95.8 KiB75.8 KiB
www.googleoptimize.com/optimize.js?id=OPT-P3FZVN9111.6 KiB67.3 KiB
www.googletagmanager.com/gtm.js?id=GTM-P2QXJ6Q&gtm=4e64k1175.5 KiB67.2 KiB
www.googletagmanager.com/gtm.js?id=GTM-5JT4BBWC&gtm=4e64k1159.9 KiB65.9 KiB
www.googletagmanager.com/gtm.js?id=GTM-TGJVHGDZ&gtm=4e64k1117.6 KiB63.4 KiB
www.googletagmanager.com/gtag/js?id=G-8LW7DLSMNS&cx=c&gtm=4e64k1146.8 KiB63.2 KiB
www.googletagmanager.com/gtag/js?id=G-NEDL1XGXY7&cx=c&gtm=4e64k1147.5 KiB61.6 KiB
www.googletagmanager.com/gtag/js?id=G-LQGLLT5T9S&cx=c&gtm=4e64k1146.3 KiB61.4 KiB
www.googletagmanager.com/gtag/destination?id=AW-968131194&cx=c&gtm=4e64k1137.2 KiB60.5 KiB
www.googletagmanager.com/gtag/destination?id=AW-971280506&cx=c&gtm=4e64k1133.9 KiB59.8 KiB
www.googletagmanager.com/gtm.js?id=GTM-TZRLHGGN&gtm=4e64k1169.4 KiB57.9 KiB
www.googletagmanager.com/gtm.js?id=GTM-PJ8NSX5&gtm=4e64k1153.9 KiB56.9 KiB
www.googletagmanager.com/gtm.js?id=GTM-WDP7BMG&gtm=4e64k1193.4 KiB55.0 KiB
www.googletagmanager.com/gtag/js?id=AW-734429637137.2 KiB54.5 KiB
www.googletagmanager.com/gtm.js?id=GTM-56CSDJ222.4 KiB52.6 KiB
/lptag/api/account/16820676/configuration/applications/ta...108.6 KiB46.5 KiB
connect.facebook.net/en_US/fbevents.js96.5 KiB33.8 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTotal CPU TimeScript EvaluationScript Parse
www.au.com/4.0 s151 ms12 ms
www.googletagmanager.com/gtm.js?id=GTM-5JT4BBWC&gtm=4e64k12.6 s2.4 s76 ms
www.googletagmanager.com/gtm.js?id=GTM-56CSDJ2.2 s1.9 s144 ms
Unattributable1.9 s44 ms0.0 ms
/etc.clientlibs/au-com/clientlibs/clientlib-site.lc-8daae...1.6 s500 ms205 ms
www.googleoptimize.com/optimize.js?id=OPT-P3FZVN91.3 s1.2 s45 ms
/etc.clientlibs/au-com/clientlibs/jquery.lc-3f56e989e786c...1.2 s473 ms13 ms
/etc.clientlibs/clientlibs/granite/jquery/granite/csrf.lc...1.1 s905 ms0.9 ms
www.googletagmanager.com/gtm.js?id=GTM-WDP7BMG&gtm=4e64k1925 ms759 ms144 ms
www.googletagmanager.com/gtm.js?id=GTM-P2QXJ6Q&gtm=4e64k1880 ms707 ms92 ms
www.au.com/content/dam/au-com/renew2024/js/autop2024.js815 ms495 ms4.4 ms
www.googletagmanager.com/gtm.js?id=GTM-TZRLHGGN&gtm=4e64k1804 ms633 ms101 ms
www.googletagmanager.com/gtm.js?id=GTM-KVC899J&gtm=4e64k1647 ms540 ms95 ms
use.typekit.net/bsm5vfo.js609 ms513 ms68 ms
www.googletagmanager.com/gtm.js?id=GTM-PJ8NSX5&gtm=4e64k1538 ms459 ms75 ms
engage.chat-message.au.com/bannerFunction.js?v=commitHash:%20d099bd8&webmch=webm519 ms202 ms313 ms
www.google-analytics.com/analytics.js478 ms440 ms9.3 ms
www.googletagmanager.com/gtag/js?id=G-NEDL1XGXY7&cx=c&gtm=4e64k1346 ms282 ms59 ms
www.googletagmanager.com/gtag/js?id=G-LQGLLT5T9S&cx=c&gtm=4e64k1329 ms269 ms56 ms
www.googletagmanager.com/gtag/js?id=G-8LW7DLSMNS&cx=c&gtm=4e64k1307 ms246 ms59 ms
www.googletagmanager.com/gtag/destination?id=AW-968131194&cx=c&gtm=4e64k1291 ms235 ms52 ms
www.googletagmanager.com/gtag/destination?id=AW-971280506&cx=c&gtm=4e64k1289 ms226 ms60 ms
/le_unified_window/10.47.0-release_2318786578/mobileEmbed...248 ms90 ms156 ms
www.googletagmanager.com/gtm.js?id=GTM-TGJVHGDZ&gtm=4e64k1201 ms155 ms44 ms
connect.facebook.net/en_US/fbevents.js181 ms132 ms48 ms
/etc.clientlibs/au-com/clientlibs/clientlib-dependencies....172 ms77 ms51 ms
/lptag/api/account/16820676/configuration/applications/ta...167 ms121 ms43 ms
www.au.com/content/dam/au-com/common/js/floating_bnr_new.js?b=b158 ms89 ms1.0 ms
/signals/config/1695071264125840?v=2.9.303&r=stable&domai...157 ms131 ms26 ms
www.googletagmanager.com/gtag/js?id=AW-734429637129 ms74 ms53 ms
ssl.socdm.com/so-async.js?siteid=41174129 ms81 ms0.7 ms
/le_secure_storage/3.36.1-release_2314911046/storage.secu...96 ms74 ms6.8 ms
s.yimg.jp/images/listing/tool/cv/ytag.js92 ms64 ms26 ms
/etc.clientlibs/au-com/clientlibs/clientlib-site.lc-f8e08...86 ms0.0 ms0.0 ms
b99.yahoo.co.jp/pagead/conversion_async.js71 ms33 ms35 ms
sf.nazs.socdm.com/tg/nazs-client.min.js52 ms42 ms0.8 ms
cdn.d2-apps.net/js/tr.js52 ms46 ms3.5 ms
engage.chat-message.au.com/banner.js51 ms44 ms6.1 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
Script Evaluation15.2 s
Other3.9 s
Style & Layout3.3 s
Script Parsing & Compilation2.2 s
Rendering983 ms
Parse HTML & CSS303 ms
Garbage Collection285 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reasonFailure type
The page has an unload handler in the main frame.Actionable

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 7.6 KiB
URLTransfer SizeEst Savings
www.au.com/content/dam/au-com/renew2024/js/autop2024.js25.2 KiB4.3 KiB
www.au.com/content/dam/au-com/patch/carousel-v2/carousel-v2.js8.5 KiB3.3 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
/content/dam/au-com/renew2024/img/primary/au/au_primary_2...3.7 MiB
/af/305f0d/00000000000000007735de57/30/m?features=ALL&v=4...1.9 MiB
/af/38dea1/00000000000000007735de56/30/m?features=ALL&v=4...1.9 MiB
/af/b0ee56/00000000000000007735de50/30/m?features=ALL&v=4...1.9 MiB
/af/9983a7/00000000000000007735de4e/30/m?features=ALL&v=4...1.8 MiB
/content/dam/au-com/renew2024/img/primary/uq/uq_primary_0...1.2 MiB
/content/dam/au-com/renew2024/img/primary/au/au_primary_2...1.2 MiB
/content/dam/au-com/renew2024/img/primary/au/au_primary_2...1.1 MiB
/content/dam/au-com/renew2024/img/primary/au/au_primary_2...779.0 KiB
/content/dam/au-com/renew2024/img/primary/au/au_primary_2...706.7 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
div.heroSlider > div.hero_kv > span.view-sp > img div.heroSlider > div.hero_kv > span.view-sp > img
/content/dam/au-com/renew2024/img/primary/kv/kv_primary_n...
ゼロから自分で作るスマホプランpovo2.0の詳細ページに遷移するバナー div > a > span.view-sp > img
/content/dam/au-com/renew2024/img/primary/povo/po_primary...
おトクづくし！UQコスパ宣言！の詳細ページに遷移するバナー div > a > span.view-sp > img
/content/dam/au-com/renew2024/img/primary/uq/uq_primary_0...
バナー：auバリューリンクプラン div > a > span.view-sp > img
/content/dam/au-com/renew2024/img/primary/au/au_primary_2...
バナー：auだから、つながる安心。スマホと衛星の直接通信350万人！空が見えれば、どこでもつながる。au Starlink Direct div > a > span.view-sp > img
/content/dam/au-com/renew2024/img/primary/au/au_primary_2...
バナー：メルカリ配送料が最大4回全額メルカリポイントで還元　4月30日（木）まで div > a > span.view-sp > img
/content/dam/au-com/renew2024/img/primary/au/au_primary_2...
バナー：iPhone 17e できること満タン。うれしさ満点。購入する div > a > span.view-sp > img
/content/dam/au-com/renew2024/img/primary/au/au_primary_2...
バナー：U18 バリュープラン div > a > span.view-sp > img
/content/dam/au-com/renew2024/img/primary/au/au_primary_2...
バナー：auバリューリンク マネ活2 div > a > span.view-sp > img
/content/dam/au-com/renew2024/img/primary/au/au_primary_2...
バナー：Google Pixel 10a機種変更おトク割 対象の料金プランと故障紛失サポート（有料）加入で機種代金最大22,000円割引 div > a > span.view-sp > img
/content/dam/au-com/renew2024/img/primary/au/au_primary_2...
バナー：auは、つながる体感No.1　日本史上初3連覇 div > a > span.view-sp > img
/content/dam/au-com/renew2024/img/primary/au/au_primary_2...
バナー：おトクな特典がたくさん！詳しくはこちら div > a > span.view-sp > img
/content/dam/au-com/renew2024/img/primary/au/au_primary_2...
バナー：auバリューリンクプラン div > a > span.view-sp > img
/content/dam/au-com/renew2024/img/primary/au/au_primary_2...
バナー：auだから、つながる安心。スマホと衛星の直接通信350万人！空が見えれば、どこでもつながる。au Starlink Direct div > a > span.view-sp > img
/content/dam/au-com/renew2024/img/primary/au/au_primary_2...
バナー：メルカリ配送料が最大4回全額メルカリポイントで還元　4月30日（木）まで div > a > span.view-sp > img
/content/dam/au-com/renew2024/img/primary/au/au_primary_2...
バナー：iPhone 17e できること満タン。うれしさ満点。購入する div > a > span.view-sp > img
/content/dam/au-com/renew2024/img/primary/au/au_primary_2...
バナー：U18 バリュープラン div > a > span.view-sp > img
/content/dam/au-com/renew2024/img/primary/au/au_primary_2...
バナー：auバリューリンク マネ活2 div > a > span.view-sp > img
/content/dam/au-com/renew2024/img/primary/au/au_primary_2...
バナー：Google Pixel 10a機種変更おトク割 対象の料金プランと故障紛失サポート（有料）加入で機種代金最大22,000円割引 div > a > span.view-sp > img
/content/dam/au-com/renew2024/img/primary/au/au_primary_2...
バナー：auは、つながる体感No.1　日本史上初3連覇 div > a > span.view-sp > img
/content/dam/au-com/renew2024/img/primary/au/au_primary_2...
バナー：おトクな特典がたくさん！詳しくはこちら div > a > span.view-sp > img
/content/dam/au-com/renew2024/img/primary/au/au_primary_2...
バナー：auバリューリンクプラン div > a > span.view-sp > img
/content/dam/au-com/renew2024/img/primary/au/au_primary_2...
バナー：auユーザーなら Google AI Pro がおトク！ div.campaignSliderContent > div > a > img.lazyload
/content/dam/au-com/renew2022/img/campaign/to_campaign_17...
バナー：au／UQからのご加入でApple Fitness+が最大3カ月間無料！ div.campaignSliderContent > div > a.icon-blank > img.lazyload
/content/dam/au-com/renew2022/img/campaign/to_campaign_16...
バナー：おトクが盛りだくさん！バリューUPチャレンジ div.campaignSliderContent > div > a > img.lazyload
/content/dam/au-com/renew2022/img/campaign/to_campaign_15...
バナー：iPhone長期ご利用の方はおトク！対象のiPhoneへの機種変更で機種代金最大11,000円割引 div.campaignSliderContent > div > a > img.lazyload
/content/dam/au-com/renew2022/img/campaign/to_campaign_17...
バナー：子ども見守りGPS本体代金50％OFF div.campaignSliderContent > div > a.icon-blank > img.lazyload
/content/dam/au-com/renew2022/img/campaign/to_campaign_17...
バナー：推しトク映画 Pontaパス会員は1,100円！ div.campaignSliderContent > div > a.icon-blank > img.lazyload
/content/dam/au-com/renew2022/img/campaign/to_campaign_17...
バナー：下取りプログラム　使っていたスマホ下取りでおトク！ div.campaignSliderContent > div > a > img.lazyload
/content/dam/au-com/renew2022/img/campaign/to_campaign_11...
バナー：auユーザーなら Google AI Pro がおトク！ div.campaignSliderContent > div > a > img.lazyload
/content/dam/au-com/renew2022/img/campaign/to_campaign_17...
バナー：au／UQからのご加入でApple Fitness+が最大3カ月間無料！ div.campaignSliderContent > div > a.icon-blank > img.lazyload
/content/dam/au-com/renew2022/img/campaign/to_campaign_16...
バナー：おトクが盛りだくさん！バリューUPチャレンジ div.campaignSliderContent > div > a > img.lazyload
/content/dam/au-com/renew2022/img/campaign/to_campaign_15...
バナー：iPhone長期ご利用の方はおトク！対象のiPhoneへの機種変更で機種代金最大11,000円割引 div.campaignSliderContent > div > a > img.lazyload
/content/dam/au-com/renew2022/img/campaign/to_campaign_17...
バナー：子ども見守りGPS本体代金50％OFF div.campaignSliderContent > div > a.icon-blank > img.lazyload
/content/dam/au-com/renew2022/img/campaign/to_campaign_17...
バナー：推しトク映画 Pontaパス会員は1,100円！ div.campaignSliderContent > div > a.icon-blank > img.lazyload
/content/dam/au-com/renew2022/img/campaign/to_campaign_17...
バナー：下取りプログラム　使っていたスマホ下取りでおトク！ div.campaignSliderContent > div > a > img.lazyload
/content/dam/au-com/renew2022/img/campaign/to_campaign_11...
バナー：auユーザーなら Google AI Pro がおトク！ div.campaignSliderContent > div > a > img.lazyload
/content/dam/au-com/renew2022/img/campaign/to_campaign_17...
バナー：au／UQからのご加入でApple Fitness+が最大3カ月間無料！ div.campaignSliderContent > div > a.icon-blank > img.lazyload
/content/dam/au-com/renew2022/img/campaign/to_campaign_16...

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

●Layout shift culprits
●Optimize DOM size
●Font display
●Modern HTTP
●Optimize viewport for mobile
●User Timing marks and measures 30 user timings
●Avoid long main-thread tasks 20 long tasks found
●Avoid non-composited animations 72 animated elements found
●Network Requests
●Network Round Trip Times 100 ms
●Server Backend Latencies 1,160 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 0 ms
○INP breakdown
○Avoid large layout shifts
87

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

Using ARIA attributes in roles where they are prohibited can mean that important information is not communicated to users of assistive technologies. Learn more about prohibited ARIA roles.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
メインビジュアル div#hero > div#heroSlider > div#defSlide > div.heroSlider

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
iPhone 17e 販売中！ a.tmpBanner-link > div.tmpBanner-content > div.tmpBanner-text > span
災害用伝言板 Disaster Message Board div.heading > div.cmp-au-com-title > h3#b-banner > span
Disaster Message Board div.cmp-au-com-title > h3#b-banner > span > span
日本語 div.language-link > div.button > a.cmp-au-com-button > span.cmp-button__text
English div.language-link > div.button > a.cmp-au-com-button > span.cmp-button__text
2026年4月21日 section.notice-cont-ctr > article.notice-cont > p.notice-cont-postDate > time
日常に溶け込む軽量型AIグラス HTC「VIVE Eagle」をau +1 collectionから4月24日に発売 section.notice-cont-ctr > article.notice-cont > p.notice-cont-ttl > a.link-text
2026年4月15日 section.notice-cont-ctr > article.notice-cont > p.notice-cont-postDate > time
SIMフリーブランド「au Flex Style」を提供開始 section.notice-cont-ctr > article.notice-cont > p.notice-cont-ttl > a.link-text
2026年4月9日 section.notice-cont-ctr > article.notice-cont > p.notice-cont-postDate > time
auフェスプロジェクトを2026年も実施、JAPAN JAM 2026・KCON JAPAN 2026で通信やAIコンテンツ提供 section.notice-cont-ctr > article.notice-cont > p.notice-cont-ttl > a.link-text
2026年4月7日 section.notice-cont-ctr > article.notice-cont > p.notice-cont-postDate > time
Google Pixel 10a をauとUQ mobileから4月14日に発売 section.notice-cont-ctr > article.notice-cont > p.notice-cont-ttl > a.link-window
2026年3月25日 section.notice-cont-ctr > article.notice-cont > p.notice-cont-postDate > time
au PAY新規加盟店について（2026年3月25日時点） section.notice-cont-ctr > article.notice-cont > p.notice-cont-ttl > a.link-text
※現在、以下のサービスにおいて障害・メンテナンスが発生しております。 div#maintenance-text > p > span.txtSize-small > span.txtColor-alert
auひかり（ホーム・マンション） section#maintenance-section > article.notice-cont > p.notice-cont-ttl > a.link-window
ホームプラス電話・ホーム電話 section#maintenance-section > article.notice-cont > p.notice-cont-ttl > a.link-window
au ID section#maintenance-section > article.notice-cont > p.notice-cont-ttl > a.link-window
auの金融・保険サービス section#maintenance-section > article.notice-cont > p.notice-cont-ttl > a.link-window
au HOME section#maintenance-section > article.notice-cont > p.notice-cont-ttl > a.link-window
auおうちあんしんサポート section#maintenance-section > article.notice-cont > p.notice-cont-ttl > a.link-window

These are opportunities to improve the legibility of your content.

Names and labels

Screen reader users rely on frame titles to describe the contents of frames. Learn more about frame titles.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
body#page-v2-b60775570e > iframe#SS_Frame body#page-v2-b60775570e > iframe#SS_Frame
body#page-v2-b60775570e > iframe#SS_Frame6 body#page-v2-b60775570e > iframe#SS_Frame6

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.

Navigation

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
災害用伝言板 Disaster Message Board div.cmp-au-com-container__contents > div.heading > div.cmp-au-com-title > h3#b-banner

These are opportunities to improve keyboard navigation in your application.

Best practices

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.wf-noto-sans-cjk-jp-n3-active html.wf-noto-sans-cjk-jp-n3-active

These items highlight common accessibility best practices.

Visible text labels that do not match the accessible name can result in a confusing experience for screen reader users. Learn more about accessible names.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
1 div#dotHero > ul.slick-dots > li > button
2 div#dotHero > ul.slick-dots > li > button
3 div#dotHero > ul.slick-dots > li.slick-active > button
4 div#dotHero > ul.slick-dots > li > button
5 div#dotHero > ul.slick-dots > li > button
6 div#dotHero > ul.slick-dots > li > button
7 div#dotHero > ul.slick-dots > li > button
8 div#dotHero > ul.slick-dots > li > button
9 div#dotHero > ul.slick-dots > li > button
スマートフォン・ 携帯電話 div#auserviceInner2024 > ul > li > a
インターネット 回線 div#auserviceInner2024 > ul > li > a
auの金融・ 保険サービス div#auserviceInner2024 > ul > li > a
1 div#dotCamp > ul.slick-dots > li > button
2 div#dotCamp > ul.slick-dots > li > button
3 div#dotCamp > ul.slick-dots > li.slick-active > button
4 div#dotCamp > ul.slick-dots > li > button
5 div#dotCamp > ul.slick-dots > li > button
6 div#dotCamp > ul.slick-dots > li > button
7 div#dotCamp > ul.slick-dots > li > button
8 div#dotCamp > ul.slick-dots > li > button
auブランド auはお客さまとともに、つねに楽しく遊び心のある未来を選び、世の中にワクワクする変化を生み出します。 div#bland1Box > ul > li#bland1_2L > a.blandBox
お客さまの声からの改善 お客さまの声からのサービス改善・向上の取り組みを紹介します。 div#bland1Box > ul > li#bland1_2R > a.blandBox
RESPECT YOU, au auが目指す「おもしろいほうの未来」の実現に向けたパートナーとの活動を紹介します。 div#bland1Box > ul > li#bland1_1R > a.blandBox
「つなぐ」取り組み 通信品質の改善・向上の取り組みを紹介します。 div#bland1Box > ul > li#bland1_1L > a.blandBox
TV CM au三太郎や、意識高すぎ！高杉くんのCMを紹介します。 div#bland1Box > ul > li#bland1L > a.blandBox
KDDIトビラ 誰もが思いを実現できる社会を目指した取り組みを紹介するブランドメディアです。 div#bland1Box > ul > li#bland2R > a.blandBox
未来に向けた取り組み パートナーとの共創を通じた、未来を担う人財の育成の活動を紹介します。 div#bland1Box > ul > li#bland2L > a.blandBox
1 div#dotCamp3 > ul.slick-dots > li > button
2 div#dotCamp3 > ul.slick-dots > li > button
3 div#dotCamp3 > ul.slick-dots > li.slick-active > button
4 div#dotCamp3 > ul.slick-dots > li > button
5 div#dotCamp3 > ul.slick-dots > li > button
6 div#dotCamp3 > ul.slick-dots > li > button
7 div#dotCamp3 > ul.slick-dots > li > button
8 div#dotCamp3 > ul.slick-dots > li > button
9 div#dotCamp3 > ul.slick-dots > li > button
10 div#dotCamp3 > ul.slick-dots > li > button
○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
●Image elements have `[alt]` attributes
●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
●ARIA attributes are used as specified for the element's role
●`[aria-hidden="true"]` elements do not contain focusable descendents
●Document has a `<title>` element
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●Links have a discernible name
●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
●No element has a `[tabindex]` value greater than 0
●Touch targets have sufficient size and spacing.
●Deprecated ARIA roles were not used
●Identical links have the same purpose.
○`[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.
○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
Unload event listeners are deprecated and will be removed.
line 2, col 1880
AttributionReporting
b99.yahoo.co.jp/pagead/conversion_async.js line 121, col 405

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
www.au.com/bin/wcm/au-com/rss.do?type=top
Failed to load resource: the server responded with a status of 404 ()
www.au.com/
Refused to execute script from 'https://pp.d2-apps.net/v1/impressions/log?client_id=102&site_url=https%3A%2F%2Fwww.au.com%2F&referer=&__version=1.0.0&__ord=2660187152419&callback=__pfunc&viewport=412x823&language=en-US&first_party_uid=6HqgGTd1fKpHR8RQ9dJ9Gy5Di5ltpl4q&local_storage_uid=NKvyBFGzgMjFne5rpKITOUwLUOczpN59&c_1=au&c_2=www.au.com&c_7=%2F' because its MIME type ('image/gif') is not executable.
www.au.com/
Refused to execute script from 'https://pp.d2-apps.net/v1/impressions/log?client_id=38&site_url=https%3A%2F%2Fwww.au.com%2F&referer=&__version=1.0.0&__ord=6152765690254&callback=__pfunc&viewport=412x823&language=en-US&first_party_uid=bhFUx3SdAqcOa8kPx68O3xahV6y7n0lp&local_storage_uid=CEDios6m9zWH3HdkBw1awlGY4OVkxPEk&c_1=iphone2018&c_2=ClientSite' because its MIME type ('image/gif') is not executable.
/etc.clientlibs/core/wcm/components/commons/datalayer/v1/... line 55, col 459
The following item cannot be handled by the data layer because it does not have a valid format: "cmp:loaded"

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLMap URL
/etc.clientlibs/au-com/clientlibs/clientlib-site.lc-8daae...
engage.chat-message.au.com/bannerFunction.js?v=commitHash:%20d099bd8&webmch=webm
cdnjs.cloudflare.com/ajax/libs/jquery-migrate/3.4.0/jquery-migrate.min.jscdnjs.cloudflare.com/ajax/libs/jquery-migrate/3.4.0/jquery-migrate.min.map
●Uses HTTPS
●Avoids third-party cookies
●Allows users to paste into input fields
●Avoids requesting the geolocation permission on page load
●Avoids requesting the notification permission on page load
●Displays images with correct aspect ratio
●Serves images with appropriate resolution
●Page has the HTML doctype
●Properly defines charset
●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
○Redirects HTTP traffic to HTTPS
○Mitigate clickjacking with XFO or CSP
92

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
メニュー div.aem-Grid > div.au-header-smp > section#jsi-header > a#jsi-drawer-navigation-open-btn
商品・サービス div.globalNav-mainNav > ul.globalNav-list > li.globalNav-list-gnav > a.jsc-megaMenu-trigger
div.globalNav-subNav > ul.globalNav-list > li.globalNav-item-search > a.subNav-showSearchBtn div.globalNav-subNav > ul.globalNav-list > li.globalNav-item-search > a.subNav-showSearchBtn
x div.htmlblock > div#jsi-drawer-navigation-wrap > div.megaMenuPc > a.jsc-megaMenu-close
商品・サービス div.megaMenuSmp-mainNav > dl#jsi-menu-list-slider > dt.megaMenuSmp-mainNav-ttl > a
スマートフォン・携帯電話 … dd#jsi-menu-list-slider-target-product > dl.megaMenuSmp-accordion > dt.megaMenuSmp-selectTtl > a
インターネット回線 … dd#jsi-menu-list-slider-target-product > dl.megaMenuSmp-accordion > dt.megaMenuSmp-selectTtl > a
ポイント・決済 … dd#jsi-menu-list-slider-target-product > dl.megaMenuSmp-accordion > dt.megaMenuSmp-selectTtl > a
auの金融・保険サービス … dd#jsi-menu-list-slider-target-product > dl.megaMenuSmp-accordion > dt.megaMenuSmp-selectTtl > a
auでんき・エネルギーサービス … dd#jsi-menu-list-slider-target-product > dl.megaMenuSmp-accordion > dt.megaMenuSmp-selectTtl > a
エンタメ … dd#jsi-menu-list-slider-target-product > dl.megaMenuSmp-accordion > dt.megaMenuSmp-selectTtl > a
くらしのサービス … dd#jsi-menu-list-slider-target-product > dl.megaMenuSmp-accordion > dt.megaMenuSmp-selectTtl > a
ショッピング … dd#jsi-menu-list-slider-target-product > dl.megaMenuSmp-accordion > dt.megaMenuSmp-selectTtl > a
My au div.megaMenuSmp-mainNav > dl#jsi-menu-list-slider-myau > dt.myAuMenuSmp-mainNav-ttl > a
料金 div#usefulmenu > ul > li > a.cmp-link__text
料金 div#usefulmenu > ul > li > a.cmp-link__text

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

○Structured data is valid
●Page isn’t blocked from indexing
●Document has a `<title>` element
●Document has a meta description
●Page has successful HTTP status code
●Links have descriptive text
●robots.txt is valid
●Image elements have `[alt]` attributes
●Document has a valid `hreflang`
●Document has a valid `rel=canonical`

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