https://www.nikkei.com
Lighthouse Mobile
· 0 checks — Mobile Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.SCORE
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Detailed Report
Audit breakdown by category with detailed findings.
56
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.
| Request | Cache TTL | Transfer Size |
|---|---|---|
| partsa.nikkei.com/parts/ds/images/topic/banner_us_iran_tension_202602_sp.jpg | 0.0 ms | 369.4 KiB |
| connect.facebook.net/en_US/fbevents.js | 1200.0 s | 96.5 KiB |
| static.cmp.datasign.co/v2/assets/cmp_ui.js?h=f4f2249aa9 | 86400.0 s | 106.5 KiB |
| cmp.datasign.co/v2/f4f2249aa9/cmp.js | 86400.0 s | 36.7 KiB |
| cdn.speedcurve.com/js/lux.js?id=18491751 | 3600.0 s | 11.3 KiB |
| partsa.nikkei.com/static/nkis/js/foneH.js | 60.0 s | 2.7 KiB |
| js.rtoaster.jp/Rtoaster.js | 604800.0 s | 4.5 KiB |
| static.cmp.datasign.co/v2/assets/cmp_ui.js?h=f4f2249aa9 | 86400.0 s | 0 B |
| cmp.datasign.co/v2/f4f2249aa9/cmp.js | 86400.0 s | 0 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:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:552.192 source:map[type:text value:[unattributed]]]]
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.
| URL | Resource Size | Est Savings | |
|---|---|---|---|
イラン軍事衝突 ニュース・解説はこちら div.container_c199s2h > a.link_lp4r7xz > picture.picture_p1geunww > img | partsa.nikkei.com/parts/ds/images/topic/banner_us_iran_tension_202602_sp.jpg | 368.5 KiB | 356.5 KiB |
ニューヨークのウォール街=遠藤啓生撮影 div.image_irszz0x > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr | /https://imgix-proxy.n8s.jp/DSXZQO2862430007042026000000-... | 38.1 KiB | 33.2 KiB |
三菱電機の「CC-Link」で連携して稼働する工場自動化機器 div.image_irszz0x > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr | /https://imgix-proxy.n8s.jp/DSXZQO2831675031032026000000-... | 37.9 KiB | 33.0 KiB |
div.image_irszz0x > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr div.image_irszz0x > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr | /https://imgix-proxy.n8s.jp/DSXZQO2667418024022026000000-... | 34.1 KiB | 29.5 KiB |
div.image_irszz0x > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr div.image_irszz0x > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr | /https://imgix-proxy.n8s.jp/DSXZQO4340483018012024000000-... | 27.9 KiB | 24.2 KiB |
div.image_irszz0x > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr div.image_irszz0x > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr | /https://imgix-proxy.n8s.jp/DSXZQO2693404002032026000000-... | 26.9 KiB | 23.3 KiB |
米国が攻撃を予告しているイランのインフラ近くで反米デモが起きている=米FOXニュースから引用 div.image_irszz0x > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr | /https://imgix-proxy.n8s.jp/DSXZQO2862630007042026000000-... | 26.7 KiB | 23.1 KiB |
テヘランの通りに掲げられたイラン最高指導者モジタバ・ハメネイ師の肖像（6日）=AP div.image_irszz0x > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr | /https://imgix-proxy.n8s.jp/DSXZQO2857199006042026000000-... | 26.1 KiB | 22.6 KiB |
div.image_irszz0x > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr div.image_irszz0x > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr | /https://imgix-proxy.n8s.jp/DSXZQO2853664006042026000000-... | 24.3 KiB | 21.1 KiB |
div.image_irszz0x > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr div.image_irszz0x > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr | /https://imgix-proxy.n8s.jp/DSXZQO2857908007042026000000-... | 23.9 KiB | 20.7 KiB |
モジタバ・ハメネイ師の肖像（3月）=ロイター div.image_irszz0x > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr | /https://imgix-proxy.n8s.jp/DSXZQO2862206007042026000000-... | 22.0 KiB | 19.1 KiB |
div.image_irszz0x > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr div.image_irszz0x > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr | /https://imgix-proxy.n8s.jp/DSXZQO2848843003042026000000-... | 21.7 KiB | 18.8 KiB |
拒否権を行使するロシアのネベンジャ国連大使（7日）=ロイター div.image_irszz0x > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr | /https://imgix-proxy.n8s.jp/DSXZQO2862640007042026000000-... | 20.0 KiB | 17.3 KiB |
インテルのロゴ㊧とイーロン・マスク氏 div.image_irszz0x > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr | /https://imgix-proxy.n8s.jp/DSXZQO2862473007042026000000-... | 18.4 KiB | 15.9 KiB |
div.image_irszz0x > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr div.image_irszz0x > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr | /https://imgix-proxy.n8s.jp/DSXZQO2858715007042026000000-... | 18.0 KiB | 15.6 KiB |
div.image_iq1cuxq > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr div.image_iq1cuxq > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr | /https://imgix-proxy.n8s.jp/DSXZQO2837432001042026000000-... | 18.0 KiB | 15.6 KiB |
米ユニバーサル・ミュージック・グループに所属する歌手のテイラー・スウィフトは世界で人気だ=ロイター div.image_irszz0x > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr | /https://imgix-proxy.n8s.jp/DSXZQO2862570007042026000000-... | 17.3 KiB | 14.9 KiB |
div.image_irszz0x > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr div.image_irszz0x > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr | /https://imgix-proxy.n8s.jp/DSXZQO2859152007042026000000-... | 16.1 KiB | 13.9 KiB |
日本経済新聞トップ div.headerToolNavContainer_h1itz95y > div.head_hugy8te > a.headLogo_hniq3e8 > img.logoImage_likza8z | www.nikkei.com/.resources/k-components/logo/masthead.rev-b8cf30e.png | 9.4 KiB | 7.5 KiB |
Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading
Why this matters
Performance issues directly impact user engagement and conversion rates.
lhId: page-19-IMG
nodeLabel: 記者会見で話すトランプ米大統領（6日、ワシントン）=ロイター
path: 1,HTML,1,BODY,8,DIV,0,DIV,0,MAIN,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,ARTICLE,1,DIV,1,DIV,0,PICTURE,3,IMG
selector: div.picture_p1typbfp > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr
snippet: <img class="image_i1yka2fr fullSize_f124y32a" src="https://article-image-ix.nikkei.com/https%3A%2F%2Fimgix-proxy.n8s.jp%2FDSX…" alt="記者会見で話すトランプ米大統領（6日、ワシントン）=ロイター" srcset="https://article-image-ix.nikkei.com/https%3A%2F%2Fimgix-proxy.n8s.jp%2FDSX…">
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
value: No additional origins are good candidates for preconnecting
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.
| URL | Transfer Size |
|---|---|
| www.nikkei.com/.resources/k2-top/main.rev-6000bdcd.css | 25.9 KiB |
These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.
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.
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: 1.5 s
| URL | Time Spent |
|---|---|
| www.nikkei.com/ | 1.6 s |
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
Diagnostics
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.
Why this matters
Performance issues directly impact user engagement and conversion rates.
Estimated savings: 360 ms 186.6 KiB
| URL | Transfer Size | Est Savings |
|---|---|---|
| www.nikkei.com/.resources/k2-top/main.rev-4d78526c.js | 133.1 KiB | 51.5 KiB |
| connect.facebook.net/en_US/fbevents.js | 96.4 KiB | 45.1 KiB |
| static.cmp.datasign.co/v2/assets/cmp_ui.js?h=f4f2249aa9 | 105.9 KiB | 45.0 KiB |
| static.cmp.datasign.co/v2/assets/cmp_ui.js?h=f4f2249aa9 | 105.9 KiB | 45.0 KiB |
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to reduce Javascript execution time.
Why this matters
Performance issues directly impact user engagement and conversion rates.
| URL | Total CPU Time | Script Evaluation | Script Parse |
|---|---|---|---|
| www.nikkei.com/ | 2.8 s | 22 ms | 2.9 ms |
| Unattributable | 1.5 s | 127 ms | 0.0 ms |
| www.nikkei.com/.resources/k2-top/main.rev-4d78526c.js | 467 ms | 425 ms | 2.6 ms |
| www.nikkei.com/.resources/tracking/static/atlas/atj.min.rev-c6c444.js | 406 ms | 117 ms | 1.7 ms |
| static.cmp.datasign.co/v2/assets/cmp_ui.js?h=f4f2249aa9 | 308 ms | 231 ms | 64 ms |
| js.rtoaster.jp/Rtoaster.js | 204 ms | 153 ms | 0.9 ms |
| cmp.datasign.co/v2/f4f2249aa9/cmp.js | 178 ms | 125 ms | 50 ms |
| connect.facebook.net/en_US/fbevents.js | 146 ms | 112 ms | 31 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.
| Category | Time Spent |
|---|---|
| Style & Layout | 2.5 s |
| Other | 1.8 s |
| Script Evaluation | 1.4 s |
| Script Parsing & Compilation | 160 ms |
| Parse HTML & CSS | 139 ms |
| Rendering | 110 ms |
| Garbage Collection | 20 ms |
Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.
Why this matters
Performance issues directly impact user engagement and conversion rates.
Estimated savings: 0.0 ms 33.4 KiB
| URL | Transfer Size | Est Savings |
|---|---|---|
| www.nikkei.com/.resources/k2-top/main.rev-6000bdcd.css | 25.8 KiB | 18.8 KiB |
| .k-button{-webkit-appearance:none;-moz-appearance:none;appearance:none;-webkit-tap-highlight-color:… | 14.6 KiB | 14.6 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.
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 | |
|---|---|
イラン軍事衝突 ニュース・解説はこちら div.container_c199s2h > a.link_lp4r7xz > picture.picture_p1geunww > img | partsa.nikkei.com/parts/ds/images/topic/banner_us_iran_tension_202602_sp.jpg |
Think! div.container_c1ukjho0 > div.textContent_t6mnomz > div.metaContainer_mondcn1 > img.icon_ijft9l6 | www.nikkei.com/.resources/k-components/logo/think.rev-3b943d5.svg |
Think! div.container_c1ukjho0 > div.textContent_t6mnomz > div.metaContainer_mondcn1 > img.icon_ijft9l6 | www.nikkei.com/.resources/k-components/logo/think.rev-3b943d5.svg |
Think! article.container_cxbsp1e > div.textContainer_ta98o9y > div.metaContainer_m10c9125 > img.icon_ia2pnl1 | www.nikkei.com/.resources/k-components/logo/think.rev-3b943d5.svg |
Think! div.container_c1ukjho0 > div.textContent_t6mnomz > div.metaContainer_mondcn1 > img.icon_ijft9l6 | www.nikkei.com/.resources/k-components/logo/think.rev-3b943d5.svg |
Think! div.container_c1ukjho0 > div.textContent_t6mnomz > div.metaContainer_mondcn1 > img.icon_ijft9l6 | www.nikkei.com/.resources/k-components/logo/think.rev-3b943d5.svg |
有料会員限定記事 ul > li.container_c79oxn > a.text_t185neh8 > img.icon_i1esupn6 | www.nikkei.com/.resources/k-components/icon/lock--gold.rev-c1d13a9.svg |
PR span.commonStylesMetaText_c1f6i0vj > span.prContainer_p1qo25si > i.iconStyle_i11t78hf > img | www.nikkei.com/.resources/k-components/icon/pr.rev-3437e86.svg |
PR span.commonStylesMetaText_c1f6i0vj > span.prContainer_p1qo25si > i.iconStyle_i11t78hf > img | www.nikkei.com/.resources/k-components/icon/pr.rev-3437e86.svg |
会員限定記事 div.textContainer_t1v5liye > h2.title_t7qfgoq > span.metaTags_m116cxpk > img.icon_i6435wp | www.nikkei.com/.resources/k-components/icon/locked_square.rev-5fc2936.svg |
会員限定記事 ul > li.container_c79oxn > a.text_t185neh8 > img.icon_i1esupn6 | www.nikkei.com/.resources/k-components/icon/locked_square.rev-5fc2936.svg |
会員限定記事 div.titleArea_t1agme82 > h2.title_tlmhwm6 > span.metaTags_m116cxpk > img.icon_i6435wp | www.nikkei.com/.resources/k-components/icon/locked_square.rev-5fc2936.svg |
会員限定記事 div.titleArea_t1agme82 > h2.title_tlmhwm6 > span.metaTags_m116cxpk > img.icon_i6435wp | www.nikkei.com/.resources/k-components/icon/locked_square.rev-5fc2936.svg |
会員限定記事 div.titleArea_t19567mm > h2.title_tl0evav > span.metaTags_m116cxpk > img.icon_i6435wp | www.nikkei.com/.resources/k-components/icon/locked_square.rev-5fc2936.svg |
会員限定記事 div.titleArea_t19567mm > h2.title_tl0evav > span.metaTags_m116cxpk > img.icon_i6435wp | www.nikkei.com/.resources/k-components/icon/locked_square.rev-5fc2936.svg |
会員限定記事 div.titleArea_t19567mm > h2.title_tl0evav > span.metaTags_m116cxpk > img.icon_i6435wp | www.nikkei.com/.resources/k-components/icon/locked_square.rev-5fc2936.svg |
会員限定記事 div.titleArea_t19567mm > h2.title_tl0evav > span.metaTags_m116cxpk > img.icon_i6435wp | www.nikkei.com/.resources/k-components/icon/locked_square.rev-5fc2936.svg |
会員限定記事 div.titleArea_t19567mm > h2.title_tl0evav > span.metaTags_m116cxpk > img.icon_i6435wp | www.nikkei.com/.resources/k-components/icon/locked_square.rev-5fc2936.svg |
会員限定記事 div.titleArea_t19567mm > h2.title_tl0evav > span.metaTags_m116cxpk > img.icon_i6435wp | www.nikkei.com/.resources/k-components/icon/locked_square.rev-5fc2936.svg |
会員限定記事 div.titleArea_t19567mm > h2.title_tl0evav > span.metaTags_m116cxpk > img.icon_i6435wp | www.nikkei.com/.resources/k-components/icon/locked_square.rev-5fc2936.svg |
会員限定記事 div.titleArea_t19567mm > h2.title_tl0evav > span.metaTags_m116cxpk > img.icon_i6435wp | www.nikkei.com/.resources/k-components/icon/locked_square.rev-5fc2936.svg |
会員限定記事 a.titleText_tnnopfn > h2.title_t8xcrjm > span.metaTags_m116cxpk > img.icon_i6435wp | www.nikkei.com/.resources/k-components/icon/locked_square.rev-5fc2936.svg |
会員限定記事 li.textArticleList_t1qxhi24 > a.titleText_tnnopfn > span.metaTags_m116cxpk > img.icon_i6435wp | www.nikkei.com/.resources/k-components/icon/locked_square.rev-5fc2936.svg |
会員限定記事 li.textArticleList_t1qxhi24 > a.titleText_tnnopfn > span.metaTags_m116cxpk > img.icon_i6435wp | www.nikkei.com/.resources/k-components/icon/locked_square.rev-5fc2936.svg |
会員限定記事 a.titleText_tnnopfn > h2.title_t8xcrjm > span.metaTags_m116cxpk > img.icon_i6435wp | www.nikkei.com/.resources/k-components/icon/locked_square.rev-5fc2936.svg |
会員限定記事 li.textArticleList_t1qxhi24 > a.titleText_tnnopfn > span.metaTags_m116cxpk > img.icon_i6435wp | www.nikkei.com/.resources/k-components/icon/locked_square.rev-5fc2936.svg |
会員限定記事 div.textContainer_ta98o9y > h2.title_te6hgf2 > span.metaTags_m116cxpk > img.icon_i6435wp | www.nikkei.com/.resources/k-components/icon/locked_square.rev-5fc2936.svg |
会員限定記事 div.titleArea_t19567mm > h2.title_tl0evav > span.metaTags_m116cxpk > img.icon_i6435wp | www.nikkei.com/.resources/k-components/icon/locked_square.rev-5fc2936.svg |
会員限定記事 div.titleArea_t19567mm > h2.title_tl0evav > span.metaTags_m116cxpk > img.icon_i6435wp | www.nikkei.com/.resources/k-components/icon/locked_square.rev-5fc2936.svg |
動画あり div.titleArea_t19567mm > h2.title_tl0evav > span.metaTags_m116cxpk > img.icon_i6435wp | www.nikkei.com/.resources/k-components/icon/video.rev-631012e.svg |
会員限定記事 div.textContainer_ta98o9y > h2.title_te6hgf2 > span.metaTags_m116cxpk > img.icon_i6435wp | www.nikkei.com/.resources/k-components/icon/locked_square.rev-5fc2936.svg |
会員限定記事 div.titleArea_t19567mm > h2.title_tl0evav > span.metaTags_m116cxpk > img.icon_i6435wp | www.nikkei.com/.resources/k-components/icon/locked_square.rev-5fc2936.svg |
会員限定記事 div.titleArea_t19567mm > h2.title_tl0evav > span.metaTags_m116cxpk > img.icon_i6435wp | www.nikkei.com/.resources/k-components/icon/locked_square.rev-5fc2936.svg |
会員限定記事 div.textContainer_ta98o9y > h2.title_te6hgf2 > span.metaTags_m116cxpk > img.icon_i6435wp | www.nikkei.com/.resources/k-components/icon/locked_square.rev-5fc2936.svg |
会員限定記事 div.titleArea_t19567mm > h2.title_tl0evav > span.metaTags_m116cxpk > img.icon_i6435wp | www.nikkei.com/.resources/k-components/icon/locked_square.rev-5fc2936.svg |
動画あり div.titleArea_t19567mm > h2.title_tl0evav > span.metaTags_m116cxpk > img.icon_i6435wp | www.nikkei.com/.resources/k-components/icon/video.rev-631012e.svg |
会員限定記事 div.titleArea_t19567mm > h2.title_tl0evav > span.metaTags_m116cxpk > img.icon_i6435wp | www.nikkei.com/.resources/k-components/icon/locked_square.rev-5fc2936.svg |
会員限定記事 div.titleArea_t19567mm > h2.title_tl0evav > span.metaTags_m116cxpk > img.icon_i6435wp | www.nikkei.com/.resources/k-components/icon/locked_square.rev-5fc2936.svg |
動画あり div.titleArea_t19567mm > h2.title_tl0evav > span.metaTags_m116cxpk > img.icon_i6435wp | www.nikkei.com/.resources/k-components/icon/video.rev-631012e.svg |
動画あり div.titleArea_t19567mm > h2.title_tl0evav > span.metaTags_m116cxpk > img.icon_i6435wp | www.nikkei.com/.resources/k-components/icon/video.rev-631012e.svg |
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
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●Avoid long main-thread tasks 18 long tasks found
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 40 ms
●Server Backend Latencies 400 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Avoid multiple page redirects
●Avoid large layout shifts 1 layout shift found
○INP breakdown
○User Timing marks and measures
○Avoid non-composited animations
89
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 |
|---|
お申し込み nav.headNavs_h1men6qz > k2-kite-header-account-nav.accountNav_a1i8t0o1 > a.accountNavItem_a1pb0gw3 > span.buttonText_bhlvih7 |
国立情報学研究所 教授 div.content_c1489jjx > a.container_cbbf1ny > span.indent_iiuxb5w > span.headline_h1axq0vo |
慶應義塾大学総合政策学部 教授 div.content_c1489jjx > a.container_cbbf1ny > span.indent_iiuxb5w > span.headline_h1axq0vo |
丸紅 執行役員 丸紅経済研究所社長・CSO補佐 div.content_c1489jjx > a.container_cbbf1ny > span.indent_iiuxb5w > span.headline_h1axq0vo |
These are opportunities to improve the legibility of your content.
Names and labels
Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.
Why this matters
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
div.cardOuterContainer_cnjf2s0 > div.cardInnerContainer_cmocufx > div.cardContent_cng6c8a > a.imageAnchor_i1u6wsqb div.cardOuterContainer_cnjf2s0 > div.cardInnerContainer_cmocufx > div.cardContent_cng6c8a > a.imageAnchor_i1u6wsqb |
div.cardOuterContainer_cnjf2s0 > div.cardInnerContainer_cmocufx > div.cardContent_cng6c8a > a.imageAnchor_i1u6wsqb div.cardOuterContainer_cnjf2s0 > div.cardInnerContainer_cmocufx > div.cardContent_cng6c8a > a.imageAnchor_i1u6wsqb |
div.cardOuterContainer_cnjf2s0 > div.cardInnerContainer_cmocufx > div.cardContent_cng6c8a > a.imageAnchor_i1u6wsqb div.cardOuterContainer_cnjf2s0 > div.cardInnerContainer_cmocufx > div.cardContent_cng6c8a > a.imageAnchor_i1u6wsqb |
div.card_c1n1wn9q > div.wrapper_wkoog9o > div.contents_cgvemjo > a.imageArea_iyrsl9h div.card_c1n1wn9q > div.wrapper_wkoog9o > div.contents_cgvemjo > a.imageArea_iyrsl9h |
div.card_c1n1wn9q > div.wrapper_wkoog9o > div.contents_cgvemjo > a.imageArea_iyrsl9h div.card_c1n1wn9q > div.wrapper_wkoog9o > div.contents_cgvemjo > a.imageArea_iyrsl9h |
These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.
Best practices
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 |
|---|
お申し込み div.head_hugy8te > nav.headNavs_h1men6qz > k2-kite-header-account-nav.accountNav_a1i8t0o1 > a.accountNavItem_a1pb0gw3 |
ログイン div.head_hugy8te > nav.headNavs_h1men6qz > k2-kite-header-account-nav.accountNav_a1i8t0o1 > a.accountNavItem_a1pb0gw3 |
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 |
|---|
ホンダ、EV戦略頓挫で出せぬ新車かさむ奨励金と高まる減配リスク article.container_clrflg9 > div.textContainer_t10uyfy9 > div.articleContainer_axihtka > a.titleText_tnnopfn |
シャトレーゼ、100円シュークリームがヒット原点回帰の経営改革 div.textArticleContainer_tud1wi2 > ul > li.textArticleList_t1qxhi24 > a.titleText_tnnopfn |
東芝、「疑似量子コンピューター」速度100倍に創薬などに応用 div.textArticleContainer_tud1wi2 > ul > li.textArticleList_t1qxhi24 > a.titleText_tnnopfn |
中国太陽光パネル、日本で一斉値上げ材料高や補助削減で再エネ逆風 div.textArticleContainer_tud1wi2 > ul > li.textArticleList_t1qxhi24 > a.titleText_tnnopfn |
電力「当日取引」で異例の高値999円誤発注か、市場の信頼性課題に article.container_clrflg9 > div.textContainer_t10uyfy9 > div.articleContainer_axihtka > a.titleText_tnnopfn |
札幌ドームの26年3月期、3期ぶり営業黒字売上高は20億円超 div.textArticleContainer_tud1wi2 > ul > li.textArticleList_t1qxhi24 > a.titleText_tnnopfn |
東証スタンダードが企業数最多にプライムと逆転、「質向上」宿題に div.textArticleContainer_tud1wi2 > ul > li.textArticleList_t1qxhi24 > a.titleText_tnnopfn |
米穀物農家、肥料高で大豆に作付けシフトも低コスト作物の面積増 div.textArticleContainer_tud1wi2 > ul > li.textArticleList_t1qxhi24 > a.titleText_tnnopfn |
○Interactive controls are keyboard focusable
○Interactive elements indicate their purpose and state
○The page has a logical tab order
○Visual order on the page follows DOM order
○User focus is not accidentally trapped in a region
○The user's focus is directed to new content added to the page
○HTML5 landmark elements are used to improve navigation
○Offscreen content is hidden from assistive technology
○Custom controls have associated labels
○Custom controls have ARIA roles
●`[aria-*]` attributes match their roles
●`[aria-hidden="true"]` is not present on the document `<body>`
●`[role]`s have all required `[aria-*]` attributes
●`[role]`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
●Elements use only permitted ARIA attributes
●Document has a `<title>` element
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●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
●Heading elements appear in a sequentially-descending order
●Document has a main landmark.
●Deprecated ARIA roles were not used
●ARIA IDs are unique
●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 an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
○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
○No form fields have multiple labels
○`<frame>` or `<iframe>` elements have a title
○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
○Input 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.
92
Best Practices
General
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.
| Source | Description |
|---|---|
Connecting to 'https://astat.nikkei.com/ATJ-2.16.10/1775592911150/69d565cd.n0jwi6gxgl1k2ez7pzrkeu05gvk2soc1/1/ingest?k=885cfd611594f1cb21ecd50b741a9f55a68fc4d8&a=view&c=page&aqe=%&d=%7B%22user%w%22user_id%y%xuser_status%y1%xsite_session%vnull%ucustom_object%w%7D%uexternal_ids%w%7D%utimezone%v0%utimestamp%y2026-04-07T20%3A15%3A11.150Z%xviewport_height%v823%uviewport_width%v412%uscreen_height%v823%uscreen_width%v412%ulayout%yunknown%zcontext%w%22app%yk2-top%xapp_version%vnull%usource%vnull%uid%vnull%uroot_id%y69d565cf.epp1...ished_at%y%xurl%yhttps%3A%2F%2Fwww.nikkei.com%2F%xpage_title%y%E6%97%A5%E6%9C%AC%E7%B5%8C%E6%B8%88%E6%96%B0%E8%81%9E%20-%20%E3%83%8B%E3%83%A5%E3%83%BC%E3%82%B9%E3%83%BB%E9%80%9F%E5%A0%B1%20%E6%9C%80%E6%96%B0%E6%83%85%E5%A0%B1%xfunnel%w%7D%ureferrer%y%xproduct_family%yDS%xproduct%yDS-Responsive%xvisibility%yvisible%xnavigation%w%22history_length%v2%utype%ynavigate%xredirectCount%v0%udomContentLoaded%v2464.8999996185303%ufirst_paint%v2288%7D%uflags%w%22abcTestingDynamicPaywall%ygroupA%zpwa%w%22A2HS%vfalse%t' violates the following Content Security Policy directive: "connect-src 'self' data: 'unsafe-inline' 'unsafe-eval' blob: rtmp: rtp: ws: wss: fonts.google.com fonts.googleapis.com fonts.gstatic.com tagmanager.google.com www.googletagmanager.com/a www.googletagmanager.com/debug/ www.googletagmanager.com/gtm.js www.googletagmanager.com/ns.html www.googletagmanager.com/static/service_worker/ www.googletagmanager.com/td assets.adobedtm.com assets.adoberesources.net *.api.brightcove.com *.bcovlive.io *.bcvp0rtal.com *.brightcove.com *.brightcove.net *.brightcovecdn.com *.brightcovegallery.com *.cf.brightcove.com *.cloudplayout.brightcove.com *.gallery.video *.gallerysites.net *.hapyak-hosted.com *.hapyak.com *.media.brightcove.com *.o.brightcove.com *.pr.bcovlive.com *.prod.boltdns.net *.sep.bcovlive.io *.wicketlabs.com admin.brightcove.co.jp bcbolt3bf711a4-a.akamaihd.net bcbolt446c5271-a.akamaihd.net bcove.video bcovlive-aakamaihd.net bcovlive.io bcvp0rtal.com brightcove.com brightcove.net brightcove.vo.llnwd.net brightcove04pmdo-a.akamaihd.net brightcovecdn.com brightcovegallery.com gallery.video gallerysites.net hapyak-hosted.com hapyak.com hlstoken-a.akamaihd.net ingest-upload-production.s3.amazonaws.com pr.bcovlive.com prod.boltdns.net wicketlabs.com cdn.jquerytools.org cdnjs.cloudflare.com code.jquery.com adpriv.nikkei.com adprivcache.nikkei.com cdn.nikkei.com parts.nikkei.com partsa.nikkei.com assets.nikkei.jp parts.nikkei.jp partsa.nikkei.jp *.googlevideo.com gdata.youtube.com googlevideo.com i.ytimg.com img.youtube.com jnn-pa.googleapis.com s.youtube.com s.ytimg.com www.google.com www.youtube-nocookie.com www.youtube.com youtube.com yt3.ggpht.com ajax.googleapis.com apis.google.com apis.google.com/js/client.js chart.apis.google.com imasdk.googleapis.com *.cmp-origin.datasign.co *.webtru.io as.datasign.co cmp-origin.datasign.co cmp.datasign.co cmp.webtru.cloud-circus.com csp.datasign.co fe.datasign.co log.cmp.datasign.co static.cmp.datasign.co webtru.io *.custhelp.com bcvippc03.rightnowtech.com custhelp.com www.rnengage.com vjs.zencdn.net d2ixvq6dqmuoso.cloudfront.net s3-ap-northeast-1.amazonaws.com/rebot-line-resized/ synalio.com dynamic.criteo.com static.criteo.net bedore.jp image.bedore.jp saison-proxy.bedore.jp webagent.bedore.jp t.co chatlp.com front.sports-digican.com golf.sports-digican.com kyodoodf-htmlparts.qri.jp mlb.sports-digican.com parts.sports-digican.com soccer.sports-digican.com api.analytics.sales-marker.jp www.analytics.sales-marker.jp article-image-ix-dev.imgix.net apigw.n8s.jp article-image-ix.nikkei.com go.ndbb.jp support.nikkei.com cdn.jsdelivr.net dc3hn7hly4eqd.cloudfront.net r.nikkei.com ask-nikkei-assets.n8s.jp heatmap.kenga.tech client.sitelead.net tag.flvcdn.net timestamp-blocks.karte.io cdn-blocks.karte.io t.oa.opera.com img.yo.impact-ad.jp cm-mx.advolve.io apps.rokt-api.com aax-eu.amazon-adsystem.com acv.mira-dsp.com main.ctolabperfstats.com chatfaq.nikkei.com ivr.nikkei.com www.nikkei.com regist.nikkei.com f4f2249aa9.cmp-origin.datasign.co". The action has been blocked. | |
Connecting to 'https://astat.nikkei.com/ATJ-2.16.10/1775592911154/69d565cd.n0jwi6gxgl1k2ez7pzrkeu05gvk2soc1/1/ingest?k=885cfd611594f1cb21ecd50b741a9f55a68fc4d8&a=measure&c=web-vitals&aqe=%&d=%7B%22user%w%22user_id%y%xuser_status%y1%xsite_session%vnull%ucustom_object%w%7D%uexternal_ids%w%7D%utimezone%v0%utimestamp%y2026-04-07T20%3A15%3A11.154Z%xviewport_height%v823%uviewport_width%v412%uscreen_height%v823%uscreen_width%v412%ulayout%yunknown%zcontext%w%22app%yk2-top%xapp_version%vnull%usource%vnull%uid%vnull%uroot_id%y69d5...le%y%E6%97%A5%E6%9C%AC%E7%B5%8C%E6%B8%88%E6%96%B0%E8%81%9E%20-%20%E3%83%8B%E3%83%A5%E3%83%BC%E3%82%B9%E3%83%BB%E9%80%9F%E5%A0%B1%20%E6%9C%80%E6%96%B0%E6%83%85%E5%A0%B1%xfunnel%w%7D%ureferrer%y%xproduct_family%yDS%xproduct%yDS-Responsive%xvisibility%yvisible%xnavigation%w%22history_length%v2%utype%ynavigate%xredirectCount%v0%udomContentLoaded%v2464.8999996185303%ufirst_paint%v2288%7D%uflags%w%22abcTestingDynamicPaywall%ygroupA%zpwa%w%22A2HS%vfalse%7D%uweb_vitals%w%22fcp%v2288%unavigationType%ynavigate%22%t' violates the following Content Security Policy directive: "connect-src 'self' data: 'unsafe-inline' 'unsafe-eval' blob: rtmp: rtp: ws: wss: fonts.google.com fonts.googleapis.com fonts.gstatic.com tagmanager.google.com www.googletagmanager.com/a www.googletagmanager.com/debug/ www.googletagmanager.com/gtm.js www.googletagmanager.com/ns.html www.googletagmanager.com/static/service_worker/ www.googletagmanager.com/td assets.adobedtm.com assets.adoberesources.net *.api.brightcove.com *.bcovlive.io *.bcvp0rtal.com *.brightcove.com *.brightcove.net *.brightcovecdn.com *.brightcovegallery.com *.cf.brightcove.com *.cloudplayout.brightcove.com *.gallery.video *.gallerysites.net *.hapyak-hosted.com *.hapyak.com *.media.brightcove.com *.o.brightcove.com *.pr.bcovlive.com *.prod.boltdns.net *.sep.bcovlive.io *.wicketlabs.com admin.brightcove.co.jp bcbolt3bf711a4-a.akamaihd.net bcbolt446c5271-a.akamaihd.net bcove.video bcovlive-aakamaihd.net bcovlive.io bcvp0rtal.com brightcove.com brightcove.net brightcove.vo.llnwd.net brightcove04pmdo-a.akamaihd.net brightcovecdn.com brightcovegallery.com gallery.video gallerysites.net hapyak-hosted.com hapyak.com hlstoken-a.akamaihd.net ingest-upload-production.s3.amazonaws.com pr.bcovlive.com prod.boltdns.net wicketlabs.com cdn.jquerytools.org cdnjs.cloudflare.com code.jquery.com adpriv.nikkei.com adprivcache.nikkei.com cdn.nikkei.com parts.nikkei.com partsa.nikkei.com assets.nikkei.jp parts.nikkei.jp partsa.nikkei.jp *.googlevideo.com gdata.youtube.com googlevideo.com i.ytimg.com img.youtube.com jnn-pa.googleapis.com s.youtube.com s.ytimg.com www.google.com www.youtube-nocookie.com www.youtube.com youtube.com yt3.ggpht.com ajax.googleapis.com apis.google.com apis.google.com/js/client.js chart.apis.google.com imasdk.googleapis.com *.cmp-origin.datasign.co *.webtru.io as.datasign.co cmp-origin.datasign.co cmp.datasign.co cmp.webtru.cloud-circus.com csp.datasign.co fe.datasign.co log.cmp.datasign.co static.cmp.datasign.co webtru.io *.custhelp.com bcvippc03.rightnowtech.com custhelp.com www.rnengage.com vjs.zencdn.net d2ixvq6dqmuoso.cloudfront.net s3-ap-northeast-1.amazonaws.com/rebot-line-resized/ synalio.com dynamic.criteo.com static.criteo.net bedore.jp image.bedore.jp saison-proxy.bedore.jp webagent.bedore.jp t.co chatlp.com front.sports-digican.com golf.sports-digican.com kyodoodf-htmlparts.qri.jp mlb.sports-digican.com parts.sports-digican.com soccer.sports-digican.com api.analytics.sales-marker.jp www.analytics.sales-marker.jp article-image-ix-dev.imgix.net apigw.n8s.jp article-image-ix.nikkei.com go.ndbb.jp support.nikkei.com cdn.jsdelivr.net dc3hn7hly4eqd.cloudfront.net r.nikkei.com ask-nikkei-assets.n8s.jp heatmap.kenga.tech client.sitelead.net tag.flvcdn.net timestamp-blocks.karte.io cdn-blocks.karte.io t.oa.opera.com img.yo.impact-ad.jp cm-mx.advolve.io apps.rokt-api.com aax-eu.amazon-adsystem.com acv.mira-dsp.com main.ctolabperfstats.com chatfaq.nikkei.com ivr.nikkei.com www.nikkei.com regist.nikkei.com f4f2249aa9.cmp-origin.datasign.co". The action has been blocked. | |
Connecting to 'https://astat.nikkei.com/ATJ-2.16.10/1775592911843/69d565cd.n0jwi6gxgl1k2ez7pzrkeu05gvk2soc1/1/ingest?k=885cfd611594f1cb21ecd50b741a9f55a68fc4d8&a=measure&c=web-vitals&aqe=%&d=%7B%22user%w%22user_id%y%xuser_status%y1%xsite_session%vnull%ucustom_object%w%7D%uexternal_ids%w%7D%utimezone%v0%utimestamp%y2026-04-07T20%3A15%3A11.843Z%xviewport_height%v823%uviewport_width%v412%uscreen_height%v823%uscreen_width%v412%ulayout%yunknown%zcontext%w%22app%yk2-top%xapp_version%vnull%usource%vnull%uid%vnull%uroot_id%y69d5...E7%B5%8C%E6%B8%88%E6%96%B0%E8%81%9E%20-%20%E3%83%8B%E3%83%A5%E3%83%BC%E3%82%B9%E3%83%BB%E9%80%9F%E5%A0%B1%20%E6%9C%80%E6%96%B0%E6%83%85%E5%A0%B1%xfunnel%w%7D%ureferrer%y%xproduct_family%yDS%xproduct%yDS-Responsive%xvisibility%yvisible%xnavigation%w%22history_length%v2%utype%ynavigate%xredirectCount%v0%udomContentLoaded%v2464.8999996185303%ufirst_paint%v2288%7D%uflags%w%22abcTestingDynamicPaywall%ygroupA%zpwa%w%22A2HS%vfalse%7D%uweb_vitals%w%22fcp%v2288%unavigationType%ynavigate%xttfb%v1608.3000001907349%t' violates the following Content Security Policy directive: "connect-src 'self' data: 'unsafe-inline' 'unsafe-eval' blob: rtmp: rtp: ws: wss: fonts.google.com fonts.googleapis.com fonts.gstatic.com tagmanager.google.com www.googletagmanager.com/a www.googletagmanager.com/debug/ www.googletagmanager.com/gtm.js www.googletagmanager.com/ns.html www.googletagmanager.com/static/service_worker/ www.googletagmanager.com/td assets.adobedtm.com assets.adoberesources.net *.api.brightcove.com *.bcovlive.io *.bcvp0rtal.com *.brightcove.com *.brightcove.net *.brightcovecdn.com *.brightcovegallery.com *.cf.brightcove.com *.cloudplayout.brightcove.com *.gallery.video *.gallerysites.net *.hapyak-hosted.com *.hapyak.com *.media.brightcove.com *.o.brightcove.com *.pr.bcovlive.com *.prod.boltdns.net *.sep.bcovlive.io *.wicketlabs.com admin.brightcove.co.jp bcbolt3bf711a4-a.akamaihd.net bcbolt446c5271-a.akamaihd.net bcove.video bcovlive-aakamaihd.net bcovlive.io bcvp0rtal.com brightcove.com brightcove.net brightcove.vo.llnwd.net brightcove04pmdo-a.akamaihd.net brightcovecdn.com brightcovegallery.com gallery.video gallerysites.net hapyak-hosted.com hapyak.com hlstoken-a.akamaihd.net ingest-upload-production.s3.amazonaws.com pr.bcovlive.com prod.boltdns.net wicketlabs.com cdn.jquerytools.org cdnjs.cloudflare.com code.jquery.com adpriv.nikkei.com adprivcache.nikkei.com cdn.nikkei.com parts.nikkei.com partsa.nikkei.com assets.nikkei.jp parts.nikkei.jp partsa.nikkei.jp *.googlevideo.com gdata.youtube.com googlevideo.com i.ytimg.com img.youtube.com jnn-pa.googleapis.com s.youtube.com s.ytimg.com www.google.com www.youtube-nocookie.com www.youtube.com youtube.com yt3.ggpht.com ajax.googleapis.com apis.google.com apis.google.com/js/client.js chart.apis.google.com imasdk.googleapis.com *.cmp-origin.datasign.co *.webtru.io as.datasign.co cmp-origin.datasign.co cmp.datasign.co cmp.webtru.cloud-circus.com csp.datasign.co fe.datasign.co log.cmp.datasign.co static.cmp.datasign.co webtru.io *.custhelp.com bcvippc03.rightnowtech.com custhelp.com www.rnengage.com vjs.zencdn.net d2ixvq6dqmuoso.cloudfront.net s3-ap-northeast-1.amazonaws.com/rebot-line-resized/ synalio.com dynamic.criteo.com static.criteo.net bedore.jp image.bedore.jp saison-proxy.bedore.jp webagent.bedore.jp t.co chatlp.com front.sports-digican.com golf.sports-digican.com kyodoodf-htmlparts.qri.jp mlb.sports-digican.com parts.sports-digican.com soccer.sports-digican.com api.analytics.sales-marker.jp www.analytics.sales-marker.jp article-image-ix-dev.imgix.net apigw.n8s.jp article-image-ix.nikkei.com go.ndbb.jp support.nikkei.com cdn.jsdelivr.net dc3hn7hly4eqd.cloudfront.net r.nikkei.com ask-nikkei-assets.n8s.jp heatmap.kenga.tech client.sitelead.net tag.flvcdn.net timestamp-blocks.karte.io cdn-blocks.karte.io t.oa.opera.com img.yo.impact-ad.jp cm-mx.advolve.io apps.rokt-api.com aax-eu.amazon-adsystem.com acv.mira-dsp.com main.ctolabperfstats.com chatfaq.nikkei.com ivr.nikkei.com www.nikkei.com regist.nikkei.com f4f2249aa9.cmp-origin.datasign.co". The action has been blocked. | |
Connecting to 'https://astat.nikkei.com/ATJ-2.16.10/1775592912515/69d565cd.n0jwi6gxgl1k2ez7pzrkeu05gvk2soc1/1/ingest?k=885cfd611594f1cb21ecd50b741a9f55a68fc4d8&a=inview&c=element&aqe=%&d=%7B%22user%w%22user_id%y%xuser_status%y1%xsite_session%vnull%ucustom_object%w%7D%uexternal_ids%w%7D%utimezone%v0%utimestamp%y2026-04-07T20%3A15%3A12.516Z%xviewport_height%v823%uviewport_width%v412%uscreen_height%v823%uscreen_width%v412%ulayout%yunknown%zcontext%w%22app%yk2-top%xapp_version%vnull%usource%vnull%uid%vnull%uroot_id%y69d565cf...alse%7D%7D%uurl%yhttps%3A%2F%2Fwww.nikkei.com%2F%xpage_title%y%E6%97%A5%E6%9C%AC%E7%B5%8C%E6%B8%88%E6%96%B0%E8%81%9E%20-%20%E3%83%8B%E3%83%A5%E3%83%BC%E3%82%B9%E3%83%BB%E9%80%9F%E5%A0%B1%20%E6%9C%80%E6%96%B0%E6%83%85%E5%A0%B1%xfunnel%w%7D%ureferrer%y%xproduct_family%yDS%xproduct%yDS-Responsive%xvisibility%yvisible%xnavigation%w%22history_length%v2%utype%ynavigate%xredirectCount%v0%udomContentLoaded%v2464.8999996185303%ufirst_paint%v2288%7D%uflags%w%22abcTestingDynamicPaywall%ygroupA%zpwa%w%22A2HS%vfalse%t' violates the following Content Security Policy directive: "connect-src 'self' data: 'unsafe-inline' 'unsafe-eval' blob: rtmp: rtp: ws: wss: fonts.google.com fonts.googleapis.com fonts.gstatic.com tagmanager.google.com www.googletagmanager.com/a www.googletagmanager.com/debug/ www.googletagmanager.com/gtm.js www.googletagmanager.com/ns.html www.googletagmanager.com/static/service_worker/ www.googletagmanager.com/td assets.adobedtm.com assets.adoberesources.net *.api.brightcove.com *.bcovlive.io *.bcvp0rtal.com *.brightcove.com *.brightcove.net *.brightcovecdn.com *.brightcovegallery.com *.cf.brightcove.com *.cloudplayout.brightcove.com *.gallery.video *.gallerysites.net *.hapyak-hosted.com *.hapyak.com *.media.brightcove.com *.o.brightcove.com *.pr.bcovlive.com *.prod.boltdns.net *.sep.bcovlive.io *.wicketlabs.com admin.brightcove.co.jp bcbolt3bf711a4-a.akamaihd.net bcbolt446c5271-a.akamaihd.net bcove.video bcovlive-aakamaihd.net bcovlive.io bcvp0rtal.com brightcove.com brightcove.net brightcove.vo.llnwd.net brightcove04pmdo-a.akamaihd.net brightcovecdn.com brightcovegallery.com gallery.video gallerysites.net hapyak-hosted.com hapyak.com hlstoken-a.akamaihd.net ingest-upload-production.s3.amazonaws.com pr.bcovlive.com prod.boltdns.net wicketlabs.com cdn.jquerytools.org cdnjs.cloudflare.com code.jquery.com adpriv.nikkei.com adprivcache.nikkei.com cdn.nikkei.com parts.nikkei.com partsa.nikkei.com assets.nikkei.jp parts.nikkei.jp partsa.nikkei.jp *.googlevideo.com gdata.youtube.com googlevideo.com i.ytimg.com img.youtube.com jnn-pa.googleapis.com s.youtube.com s.ytimg.com www.google.com www.youtube-nocookie.com www.youtube.com youtube.com yt3.ggpht.com ajax.googleapis.com apis.google.com apis.google.com/js/client.js chart.apis.google.com imasdk.googleapis.com *.cmp-origin.datasign.co *.webtru.io as.datasign.co cmp-origin.datasign.co cmp.datasign.co cmp.webtru.cloud-circus.com csp.datasign.co fe.datasign.co log.cmp.datasign.co static.cmp.datasign.co webtru.io *.custhelp.com bcvippc03.rightnowtech.com custhelp.com www.rnengage.com vjs.zencdn.net d2ixvq6dqmuoso.cloudfront.net s3-ap-northeast-1.amazonaws.com/rebot-line-resized/ synalio.com dynamic.criteo.com static.criteo.net bedore.jp image.bedore.jp saison-proxy.bedore.jp webagent.bedore.jp t.co chatlp.com front.sports-digican.com golf.sports-digican.com kyodoodf-htmlparts.qri.jp mlb.sports-digican.com parts.sports-digican.com soccer.sports-digican.com api.analytics.sales-marker.jp www.analytics.sales-marker.jp article-image-ix-dev.imgix.net apigw.n8s.jp article-image-ix.nikkei.com go.ndbb.jp support.nikkei.com cdn.jsdelivr.net dc3hn7hly4eqd.cloudfront.net r.nikkei.com ask-nikkei-assets.n8s.jp heatmap.kenga.tech client.sitelead.net tag.flvcdn.net timestamp-blocks.karte.io cdn-blocks.karte.io t.oa.opera.com img.yo.impact-ad.jp cm-mx.advolve.io apps.rokt-api.com aax-eu.amazon-adsystem.com acv.mira-dsp.com main.ctolabperfstats.com chatfaq.nikkei.com ivr.nikkei.com www.nikkei.com regist.nikkei.com f4f2249aa9.cmp-origin.datasign.co". The action has been blocked. | |
Connecting to 'https://astat.nikkei.com/ATJ-2.16.10/1775592912520/69d565cd.n0jwi6gxgl1k2ez7pzrkeu05gvk2soc1/1/ingest?k=885cfd611594f1cb21ecd50b741a9f55a68fc4d8&a=inview&c=element&aqe=%&d=%7B%22user%w%22user_id%y%xuser_status%y1%xsite_session%vnull%ucustom_object%w%7D%uexternal_ids%w%7D%utimezone%v0%utimestamp%y2026-04-07T20%3A15%3A12.520Z%xviewport_height%v823%uviewport_width%v412%uscreen_height%v823%uscreen_width%v412%ulayout%yunknown%zcontext%w%22app%yk2-top%xapp_version%vnull%usource%vnull%uid%vnull%uroot_id%y69d565cf...alse%7D%7D%uurl%yhttps%3A%2F%2Fwww.nikkei.com%2F%xpage_title%y%E6%97%A5%E6%9C%AC%E7%B5%8C%E6%B8%88%E6%96%B0%E8%81%9E%20-%20%E3%83%8B%E3%83%A5%E3%83%BC%E3%82%B9%E3%83%BB%E9%80%9F%E5%A0%B1%20%E6%9C%80%E6%96%B0%E6%83%85%E5%A0%B1%xfunnel%w%7D%ureferrer%y%xproduct_family%yDS%xproduct%yDS-Responsive%xvisibility%yvisible%xnavigation%w%22history_length%v2%utype%ynavigate%xredirectCount%v0%udomContentLoaded%v2464.8999996185303%ufirst_paint%v2288%7D%uflags%w%22abcTestingDynamicPaywall%ygroupA%zpwa%w%22A2HS%vfalse%t' violates the following Content Security Policy directive: "connect-src 'self' data: 'unsafe-inline' 'unsafe-eval' blob: rtmp: rtp: ws: wss: fonts.google.com fonts.googleapis.com fonts.gstatic.com tagmanager.google.com www.googletagmanager.com/a www.googletagmanager.com/debug/ www.googletagmanager.com/gtm.js www.googletagmanager.com/ns.html www.googletagmanager.com/static/service_worker/ www.googletagmanager.com/td assets.adobedtm.com assets.adoberesources.net *.api.brightcove.com *.bcovlive.io *.bcvp0rtal.com *.brightcove.com *.brightcove.net *.brightcovecdn.com *.brightcovegallery.com *.cf.brightcove.com *.cloudplayout.brightcove.com *.gallery.video *.gallerysites.net *.hapyak-hosted.com *.hapyak.com *.media.brightcove.com *.o.brightcove.com *.pr.bcovlive.com *.prod.boltdns.net *.sep.bcovlive.io *.wicketlabs.com admin.brightcove.co.jp bcbolt3bf711a4-a.akamaihd.net bcbolt446c5271-a.akamaihd.net bcove.video bcovlive-aakamaihd.net bcovlive.io bcvp0rtal.com brightcove.com brightcove.net brightcove.vo.llnwd.net brightcove04pmdo-a.akamaihd.net brightcovecdn.com brightcovegallery.com gallery.video gallerysites.net hapyak-hosted.com hapyak.com hlstoken-a.akamaihd.net ingest-upload-production.s3.amazonaws.com pr.bcovlive.com prod.boltdns.net wicketlabs.com cdn.jquerytools.org cdnjs.cloudflare.com code.jquery.com adpriv.nikkei.com adprivcache.nikkei.com cdn.nikkei.com parts.nikkei.com partsa.nikkei.com assets.nikkei.jp parts.nikkei.jp partsa.nikkei.jp *.googlevideo.com gdata.youtube.com googlevideo.com i.ytimg.com img.youtube.com jnn-pa.googleapis.com s.youtube.com s.ytimg.com www.google.com www.youtube-nocookie.com www.youtube.com youtube.com yt3.ggpht.com ajax.googleapis.com apis.google.com apis.google.com/js/client.js chart.apis.google.com imasdk.googleapis.com *.cmp-origin.datasign.co *.webtru.io as.datasign.co cmp-origin.datasign.co cmp.datasign.co cmp.webtru.cloud-circus.com csp.datasign.co fe.datasign.co log.cmp.datasign.co static.cmp.datasign.co webtru.io *.custhelp.com bcvippc03.rightnowtech.com custhelp.com www.rnengage.com vjs.zencdn.net d2ixvq6dqmuoso.cloudfront.net s3-ap-northeast-1.amazonaws.com/rebot-line-resized/ synalio.com dynamic.criteo.com static.criteo.net bedore.jp image.bedore.jp saison-proxy.bedore.jp webagent.bedore.jp t.co chatlp.com front.sports-digican.com golf.sports-digican.com kyodoodf-htmlparts.qri.jp mlb.sports-digican.com parts.sports-digican.com soccer.sports-digican.com api.analytics.sales-marker.jp www.analytics.sales-marker.jp article-image-ix-dev.imgix.net apigw.n8s.jp article-image-ix.nikkei.com go.ndbb.jp support.nikkei.com cdn.jsdelivr.net dc3hn7hly4eqd.cloudfront.net r.nikkei.com ask-nikkei-assets.n8s.jp heatmap.kenga.tech client.sitelead.net tag.flvcdn.net timestamp-blocks.karte.io cdn-blocks.karte.io t.oa.opera.com img.yo.impact-ad.jp cm-mx.advolve.io apps.rokt-api.com aax-eu.amazon-adsystem.com acv.mira-dsp.com main.ctolabperfstats.com chatfaq.nikkei.com ivr.nikkei.com www.nikkei.com regist.nikkei.com f4f2249aa9.cmp-origin.datasign.co". The action has been blocked. | |
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partsa.nikkei.com/static/nkis/js/foneH.js line 4, col 612 | Loading the script 'https://nkispa.nikkei.com/fh/showad_d094700e_d.js' violates the following Content Security Policy directive: "default-src 'self' data: 'unsafe-inline' 'unsafe-eval' blob: rtmp: rtp: fonts.google.com fonts.googleapis.com fonts.gstatic.com tagmanager.google.com www.googletagmanager.com/a www.googletagmanager.com/debug/ www.googletagmanager.com/gtm.js www.googletagmanager.com/ns.html www.googletagmanager.com/static/service_worker/ www.googletagmanager.com/td assets.adobedtm.com assets.adoberesources.net *.api.brightcove.com *.bcovlive.io *.bcvp0rtal.com *.brightcove.com *.brightcove.net *.brightcovecdn.com *.brightcovegallery.com *.cf.brightcove.com *.cloudplayout.brightcove.com *.gallery.video *.gallerysites.net *.hapyak-hosted.com *.hapyak.com *.media.brightcove.com *.o.brightcove.com *.pr.bcovlive.com *.prod.boltdns.net *.sep.bcovlive.io *.wicketlabs.com admin.brightcove.co.jp bcbolt3bf711a4-a.akamaihd.net bcbolt446c5271-a.akamaihd.net bcove.video bcovlive-aakamaihd.net bcovlive.io bcvp0rtal.com brightcove.com brightcove.net brightcove.vo.llnwd.net brightcove04pmdo-a.akamaihd.net brightcovecdn.com brightcovegallery.com gallery.video gallerysites.net hapyak-hosted.com hapyak.com hlstoken-a.akamaihd.net ingest-upload-production.s3.amazonaws.com pr.bcovlive.com prod.boltdns.net wicketlabs.com cdn.jquerytools.org cdnjs.cloudflare.com code.jquery.com adpriv.nikkei.com adprivcache.nikkei.com cdn.nikkei.com parts.nikkei.com partsa.nikkei.com assets.nikkei.jp parts.nikkei.jp partsa.nikkei.jp *.googlevideo.com gdata.youtube.com googlevideo.com i.ytimg.com img.youtube.com jnn-pa.googleapis.com s.youtube.com s.ytimg.com www.google.com www.youtube-nocookie.com www.youtube.com youtube.com yt3.ggpht.com ajax.googleapis.com apis.google.com apis.google.com/js/client.js chart.apis.google.com imasdk.googleapis.com *.cmp-origin.datasign.co *.webtru.io as.datasign.co cmp-origin.datasign.co cmp.datasign.co cmp.webtru.cloud-circus.com csp.datasign.co fe.datasign.co log.cmp.datasign.co static.cmp.datasign.co webtru.io *.custhelp.com bcvippc03.rightnowtech.com custhelp.com www.rnengage.com vjs.zencdn.net d2ixvq6dqmuoso.cloudfront.net s3-ap-northeast-1.amazonaws.com/rebot-line-resized/ synalio.com dynamic.criteo.com static.criteo.net bedore.jp image.bedore.jp saison-proxy.bedore.jp webagent.bedore.jp t.co chatlp.com front.sports-digican.com golf.sports-digican.com kyodoodf-htmlparts.qri.jp mlb.sports-digican.com parts.sports-digican.com soccer.sports-digican.com api.analytics.sales-marker.jp www.analytics.sales-marker.jp article-image-ix-dev.imgix.net apigw.n8s.jp article-image-ix.nikkei.com go.ndbb.jp support.nikkei.com cdn.jsdelivr.net dc3hn7hly4eqd.cloudfront.net r.nikkei.com ask-nikkei-assets.n8s.jp heatmap.kenga.tech client.sitelead.net tag.flvcdn.net timestamp-blocks.karte.io cdn-blocks.karte.io t.oa.opera.com img.yo.impact-ad.jp cm-mx.advolve.io apps.rokt-api.com aax-eu.amazon-adsystem.com acv.mira-dsp.com main.ctolabperfstats.com chatfaq.nikkei.com ivr.nikkei.com www.nikkei.com regist.nikkei.com f4f2249aa9.cmp-origin.datasign.co". Note that 'script-src-elem' was not explicitly set, so 'default-src' is used as a fallback. The action has been blocked. |
Loading the script 'https://www.googletagmanager.com/gtag/js?id=G-PXS8451SBG' violates the following Content Security Policy directive: "default-src 'self' data: 'unsafe-inline' 'unsafe-eval' blob: rtmp: rtp: fonts.google.com fonts.googleapis.com fonts.gstatic.com tagmanager.google.com www.googletagmanager.com/a www.googletagmanager.com/debug/ www.googletagmanager.com/gtm.js www.googletagmanager.com/ns.html www.googletagmanager.com/static/service_worker/ www.googletagmanager.com/td assets.adobedtm.com assets.adoberesources.net *.api.brightcove.com *.bcovlive.io *.bcvp0rtal.com *.brightcove.com *.brightcove.net *.brightcovecdn.com *.brightcovegallery.com *.cf.brightcove.com *.cloudplayout.brightcove.com *.gallery.video *.gallerysites.net *.hapyak-hosted.com *.hapyak.com *.media.brightcove.com *.o.brightcove.com *.pr.bcovlive.com *.prod.boltdns.net *.sep.bcovlive.io *.wicketlabs.com admin.brightcove.co.jp bcbolt3bf711a4-a.akamaihd.net bcbolt446c5271-a.akamaihd.net bcove.video bcovlive-aakamaihd.net bcovlive.io bcvp0rtal.com brightcove.com brightcove.net brightcove.vo.llnwd.net brightcove04pmdo-a.akamaihd.net brightcovecdn.com brightcovegallery.com gallery.video gallerysites.net hapyak-hosted.com hapyak.com hlstoken-a.akamaihd.net ingest-upload-production.s3.amazonaws.com pr.bcovlive.com prod.boltdns.net wicketlabs.com cdn.jquerytools.org cdnjs.cloudflare.com code.jquery.com adpriv.nikkei.com adprivcache.nikkei.com cdn.nikkei.com parts.nikkei.com partsa.nikkei.com assets.nikkei.jp parts.nikkei.jp partsa.nikkei.jp *.googlevideo.com gdata.youtube.com googlevideo.com i.ytimg.com img.youtube.com jnn-pa.googleapis.com s.youtube.com s.ytimg.com www.google.com www.youtube-nocookie.com www.youtube.com youtube.com yt3.ggpht.com ajax.googleapis.com apis.google.com apis.google.com/js/client.js chart.apis.google.com imasdk.googleapis.com *.cmp-origin.datasign.co *.webtru.io as.datasign.co cmp-origin.datasign.co cmp.datasign.co cmp.webtru.cloud-circus.com csp.datasign.co fe.datasign.co log.cmp.datasign.co static.cmp.datasign.co webtru.io *.custhelp.com bcvippc03.rightnowtech.com custhelp.com www.rnengage.com vjs.zencdn.net d2ixvq6dqmuoso.cloudfront.net s3-ap-northeast-1.amazonaws.com/rebot-line-resized/ synalio.com dynamic.criteo.com static.criteo.net bedore.jp image.bedore.jp saison-proxy.bedore.jp webagent.bedore.jp t.co chatlp.com front.sports-digican.com golf.sports-digican.com kyodoodf-htmlparts.qri.jp mlb.sports-digican.com parts.sports-digican.com soccer.sports-digican.com api.analytics.sales-marker.jp www.analytics.sales-marker.jp article-image-ix-dev.imgix.net apigw.n8s.jp article-image-ix.nikkei.com go.ndbb.jp support.nikkei.com cdn.jsdelivr.net dc3hn7hly4eqd.cloudfront.net r.nikkei.com ask-nikkei-assets.n8s.jp heatmap.kenga.tech client.sitelead.net tag.flvcdn.net timestamp-blocks.karte.io cdn-blocks.karte.io t.oa.opera.com img.yo.impact-ad.jp cm-mx.advolve.io apps.rokt-api.com aax-eu.amazon-adsystem.com acv.mira-dsp.com main.ctolabperfstats.com chatfaq.nikkei.com ivr.nikkei.com www.nikkei.com regist.nikkei.com f4f2249aa9.cmp-origin.datasign.co". Note that 'script-src-elem' was not explicitly set, so 'default-src' is used as a fallback. The action has been blocked. |
Issues logged to the `Issues` panel in Chrome Devtools indicate unresolved problems. They can come from network request failures, insufficient security controls, and other browser concerns. Open up the Issues panel in Chrome DevTools for more details on each issue.
Why this matters
Performance issues directly impact user engagement and conversion rates.
| Issue type |
|---|
| Content security policy |
●Uses HTTPS
●Avoids deprecated APIs
●Avoids third-party cookies
●Allows users to paste into input fields
●Avoids requesting the geolocation permission on page load
●Avoids requesting the notification permission on page load
●Displays images with correct aspect ratio
●Serves images with appropriate resolution
●Page has the HTML doctype
●Properly defines charset
●Ensure CSP is effective against XSS attacks
●Use a strong HSTS policy
●Ensure proper origin isolation with COOP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
●Page has valid source maps
○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 |
|---|
What is Personal Data? div.datasign_cmp__body > p#datasign_cmp__cmp_lead > div#datasign_cmp__cmp_content_body_header_note > a.datasign__leadAboutLink--index-module |
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`