https://nikkei.com
Lighthouse Desktop
· 0 checks — Desktop Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.SCORE
0
GRADE
FIX
0
REVIEW
0
PASS
0
INFO
0
Detailed Report
Audit breakdown by category with detailed findings.
77
Performance
Insights
Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.
Why this matters
Performance issues directly impact user engagement and conversion rates.
Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling
Why this matters
Performance issues directly impact user engagement and conversion rates.
3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.
Why this matters
Performance issues directly impact user engagement and conversion rates.
Layout shifts occur when elements move absent any user interaction. Investigate the causes of layout shifts, such as elements being added, removed, or their fonts changing as the page loads.
Why this matters
Performance issues directly impact user engagement and conversion rates.
headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]
items: [map[node:map[type:text value:Total] score:0.157243] map[node:map[boundingRect:map[bottom:1018 height:245 left:32 right:982 top:773 width:950] lhId:page-2-DIV nodeLabel:米イラン、パキスタンで再交渉調整 ｢バンス氏らがやり取り継続｣
イラン軍事衝突
米イラン、パキスタンで再交渉調整｢バンス氏らがやり取り継続｣
【イスタンブー… path:1,HTML,1,BODY,8,DIV,0,DIV,0,MAIN,0,DIV,0,DIV,0,DIV,3,DIV selector:div > div > div > div.largeCardArticleBlocks_lf4a8gu snippet:<div class="largeCardArticleBlocks_lf4a8gu" data-k2-headline-node="3"> type:node] score:0.151079] map[node:map[boundingRect:map[bottom:292 height:48 left:289 right:1061 top:244 width:772] lhId:page-1-UL nodeLabel:トップ
速報
ビジネス
マーケット
経済
国際
オピニオン
もっと見る
#ナフサ高騰
#トランプ政権 path:1,HTML,1,BODY,3,HEADER,1,NAV,0,DIV,1,DIV,0,UL selector:nav.globalNavigationHeader_g16jbunc > div.container_c681z5e > div.content_ck20673 > ul.contentNav_c1bjgmbd snippet:<ul class="contentNav_c1bjgmbd"> type:node] score:0.006164]]
headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]
items: [map[node:map[type:text value:Total] score:0.274074] map[node:map[boundingRect:map[bottom:8067 height:7735 left:0 right:1350 top:332 width:1350] lhId:page-7-DIV nodeLabel:米S&P500とナスダック総合が最高値、中東紛争でも崩れぬ業績
米S&P500とナスダック総合が最高値、中東紛争でも崩れぬ業績
【ニューヨーク=今堀祥和】米… path:1,HTML,1,BODY,8,DIV selector:body > div.body_bgvwx9q snippet:<div class="body_bgvwx9q"> type:node] score:0.274074]]
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.
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-0-IMG
nodeLabel: ニューヨーク証券取引所（2015年）=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="ニューヨーク証券取引所（2015年）=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
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_pc.jpg | 0.0 ms | 571.1 KiB |
| nkispa.nikkei.com/fh/227246.jpg | 0.0 ms | 138.4 KiB |
| connect.facebook.net/en_US/fbevents.js | 1200.0 s | 96.4 KiB |
| nkispa.nikkei.com/fh/227260 | 0.0 ms | 44.2 KiB |
| /signals/config/517132292271830?v=2.9.298&r=stable&domain... | 1200.0 s | 44.1 KiB |
| cdn.speedcurve.com/js/lux.js?id=18491751 | 3600.0 s | 11.3 KiB |
| nkispa.nikkei.com/fh/showad_d094700e.js | 0.0 ms | 8.5 KiB |
| partsa.nikkei.com/static/nkis/js/foneH.js | 60.0 s | 2.7 KiB |
| nkispa.nikkei.com/fh/showad_d094700e_d.js | 0.0 ms | 2.1 KiB |
| js.rtoaster.jp/Rtoaster.js | 604800.0 s | 4.5 KiB |
| /tr/?id=517132292271830&ev=PageView&dl=https%3A%2F%2Fwww.... | 0.0 ms | 16 B |
| js.rtoaster.jp/Rtoaster.js | 604800.0 s | 0 B |
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_pc.jpg | 570.0 KiB | 561.6 KiB |
body > a > img body > a > img | nkispa.nikkei.com/fh/227246.jpg | 138.1 KiB | 125.9 KiB |
a.imageAnchor_i1u6wsqb > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr a.imageAnchor_i1u6wsqb > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr | /https://imgix-proxy.n8s.jp/DSXZQO2863302008042026000000-... | 60.4 KiB | 51.4 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/DSXZQO2898455015042026000000-... | 45.8 KiB | 39.7 KiB |
死亡した男児の自宅周辺の警戒にあたる警察官と集まった報道陣（15日、京都府南丹市） div.image_irszz0x > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr | /https://imgix-proxy.n8s.jp/DSXZQO2899595015042026000000-... | 40.8 KiB | 38.4 KiB |
メルトリーが提供する「Days AI」では生成AIを使って自分のオリジナルキャラクター「うちの子」をつくって遊べる div.picture_pvxcl1b > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr | /https://imgix-proxy.n8s.jp/DSXZQO2733237010032026000000-... | 51.7 KiB | 37.0 KiB |
熊本地震では少なくとも10病院が全入院患者の避難を余儀なくされた（2016年4月、熊本市） div.image_irszz0x > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr | /https://imgix-proxy.n8s.jp/DSXZQO2874388010042026000000-... | 35.1 KiB | 32.8 KiB |
3週間かけ欧州の5カ国を回った div.image_irszz0x > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr | /https://imgix-proxy.n8s.jp/DSXZQO2814767027032026000000-... | 32.1 KiB | 30.0 KiB |
body > a > img body > a > img | nkispa.nikkei.com/fh/227260 | 44.0 KiB | 29.6 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/DSXZQO2866001008042026000000-... | 27.8 KiB | 26.0 KiB |
セイコーエプソンの吉田潤吉社長は３月に中期経営計画を発表した a > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr | /https://imgix-proxy.n8s.jp/DSXZQO2861761007042026000000-... | 30.7 KiB | 25.9 KiB |
モルガン・スタンレー株は最高値を更新=ロイター a > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr | /https://imgix-proxy.n8s.jp/DSXZQO2899975016042026000000-... | 30.4 KiB | 25.6 KiB |
トランプ米大統領㊧と話すバンス副大統領（3月、米ワシントン）=ロイター div.image_iq1cuxq > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr | /https://imgix-proxy.n8s.jp/DSXZQO2899995016042026000000-... | 30.3 KiB | 25.3 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/DSXZQO2899416015042026000000-... | 27.0 KiB | 25.2 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/DSXZQO2897560015042026000000-... | 26.0 KiB | 24.3 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/DSXZQO2893912014042026000000-... | 25.2 KiB | 23.5 KiB |
15日の東京株式市場で日経平均株価は2月27日に付けた最高値を試す展開となった（ロイター） a.imageAnchor_i1u6wsqb > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr | /https://imgix-proxy.n8s.jp/DSXZQO2897464015042026000000-... | 31.0 KiB | 23.4 KiB |
ボスポラス海峡を通過するロシア船籍の原油タンカー=ロイター div.image_irszz0x > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr | /https://imgix-proxy.n8s.jp/DSXZQO2899924015042026000000-... | 25.0 KiB | 23.4 KiB |
a.imageAnchor_i1u6wsqb > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr a.imageAnchor_i1u6wsqb > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr | /https://imgix-proxy.n8s.jp/DSXZQO2880252011042026000000-... | 30.0 KiB | 22.6 KiB |
第一三共ヘルスケアの「ロキソニンＳ」など div.image_irszz0x > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr | /https://imgix-proxy.n8s.jp/DSXZQO2896557015042026000000-... | 23.0 KiB | 21.5 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/DSXZQO2879173010042026000000-... | 21.9 KiB | 20.5 KiB |
税制改正が働く人のランチ事情に変化をもたらしている div.image_irszz0x > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr | /https://imgix-proxy.n8s.jp/DSXZQO2887782013042026000000-... | 20.1 KiB | 18.8 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/DSXZQO2890922014042026000000-... | 19.2 KiB | 18.0 KiB |
ホルムズ海峡の通過を目指す船舶は情勢に翻弄される（3月、アラブ首長国連邦東部ラス・アル・ハイマ）=ロイター div.image_irszz0x > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr | /https://imgix-proxy.n8s.jp/DSXZQO2879376010042026000000-... | 17.9 KiB | 16.8 KiB |
div.picture_pvxcl1b > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr div.picture_pvxcl1b > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr | /https://imgix-proxy.n8s.jp/DSXZQO2882737013042026000000-... | 27.8 KiB | 16.7 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/DSXZQO2835358001042026000000-... | 17.6 KiB | 16.5 KiB |
風早隆弘 div.content_c1489jjx > a.container_cbbf1ny > span.picture_p1sgo2jr > img.reporterImage_rdqh9f3 | /https://imgix-proxy.n8s.jp/topic/EVP01081-1-1.jpg?auto=f... | 15.4 KiB | 15.2 KiB |
ニューヨーク証券取引所（2015年）=ロイター div.picture_p1typbfp > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr | /https://imgix-proxy.n8s.jp/DSXZQO2899945016042026000000-... | 24.1 KiB | 14.5 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/DSXZQO2778776019032026000000-... | 15.0 KiB | 14.0 KiB |
原油価格がインフレと景気にどう影響するかが今後のカギ（26年4月14日、米オレゴン州のガソリンスタンド）=AP a.imageAnchor_i1u6wsqb > div.picture_p1h9z2jq > picture.content_c19bavgi > img.image_i1yka2fr | /https://imgix-proxy.n8s.jp/DSXZQO2897536015042026000000-... | 16.7 KiB | 12.6 KiB |
中竹竜二 div.content_c1489jjx > a.container_cbbf1ny > span.picture_p1sgo2jr > img.reporterImage_rdqh9f3 | /https://imgix-proxy.n8s.jp/topic/EVP01086-1-1.jpg?auto=f... | 8.0 KiB | 7.9 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 | 7.0 KiB |
益尾知佐子 div.content_c1489jjx > a.container_cbbf1ny > span.picture_p1sgo2jr > img.reporterImage_rdqh9f3 | /https://imgix-proxy.n8s.jp/topic/EVP01135-1-1.jpg?auto=f... | 6.7 KiB | 6.6 KiB |
HTTP/2 and HTTP/3 offer many benefits over HTTP/1.1, such as multiplexing. Learn more about using modern HTTP.
Why this matters
Performance issues directly impact user engagement and conversion rates.
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.
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: 343 ms
| URL | Time Spent |
|---|---|
| nikkei.com/ | 343 ms |
| www.nikkei.com/ | 0.0 ms |
These are the largest layout shifts observed on the page. Each table item represents a single layout shift, and shows the element that shifted the most. Below each item are possible root causes that led to the layout shift. Some of these layout shifts may not be included in the CLS metric value due to windowing. Learn how to improve CLS
Why this matters
Performance issues directly impact user engagement and conversion rates.
| Element | Layout shift score |
|---|---|
米S&P500とナスダック総合が最高値、中東紛争でも崩れぬ業績
米S&P500とナスダック総合が最高値、中東紛争でも崩れぬ業績
【ニューヨーク=今堀祥和】米… body > div.body_bgvwx9q | 0.274 |
米イラン、パキスタンで再交渉調整 ｢バンス氏らがやり取り継続｣
イラン軍事衝突
米イラン、パキスタンで再交渉調整｢バンス氏らがやり取り継続｣
【イスタンブー… div > div > div > div.largeCardArticleBlocks_lf4a8gu | 0.151 |
トップ
速報
ビジネス
マーケット
経済
国際
オピニオン
もっと見る
#ナフサ高騰
#トランプ政権 nav.globalNavigationHeader_g16jbunc > div.container_c681z5e > div.content_ck20673 > ul.contentNav_c1bjgmbd | 0.006 |
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.
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: 10 ms 190.8 KiB
| URL | Transfer Size | Est Savings |
|---|---|---|
| www.googletagmanager.com/gtag/js?id=AW-1024704716&cx=c>m=4e64e1h1 | 144.2 KiB | 55.5 KiB |
| www.googletagmanager.com/gtag/js?id=G-PXS8451SBG | 173.3 KiB | 55.0 KiB |
| www.nikkei.com/.resources/k2-top/main.rev-727ad7f4.js | 133.2 KiB | 47.8 KiB |
| connect.facebook.net/en_US/fbevents.js | 96.3 KiB | 32.5 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: 10 ms 29.8 KiB
| URL | Transfer Size | Est Savings |
|---|---|---|
| www.nikkei.com/.resources/k2-top/main.rev-6000bdcd.css | 25.8 KiB | 15.3 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_pc.jpg |
Think! article.container_c1e5f6rx > div.textContainer_t1v5liye > div.metaContainer_mvb5xl6 > img.icon_i7atnwz | 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 |
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! li.textArticleList_t1qxhi24 > a.titleText_tnnopfn > span.metaContainer_m1xd4ucj > img.icon_i19xqikn | 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 |
PR a.anchor_a5ifnf5 > div.prContainer_pcxi4q8 > 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 |
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 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 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 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 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 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 |
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 |
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 |
More information about the performance of your application. These numbers don't directly affect the Performance score.
●Optimize DOM size
●Font display
●Forced reflow
●LCP breakdown
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●User Timing marks and measures 14 user timings
●JavaScript execution time 0.4 s
●Minimizes main-thread work 2.0 s
●Avoid long main-thread tasks 6 long tasks found
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 210 ms
●Server Backend Latencies 690 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 10 ms
○INP breakdown
○Avoid non-composited animations
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.
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 |
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 > div.adForLarge_a15byfch > div#4982_6763 > iframe#fif_slot__4982_6763 body > div.adForLarge_a15byfch > div#4982_6763 > iframe#fif_slot__4982_6763 |
div.wrapper_w1aqievp > div.ad_a2ahng2 > div#4984_6763 > iframe#fif_slot__4984_6763 div.wrapper_w1aqievp > div.ad_a2ahng2 > div#4984_6763 > iframe#fif_slot__4984_6763 |
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.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 |
|---|
日経チャンネル section.column_cw1pcvi > ul.container_cwihsqr > li.splitItem_ssxtw7q > a.link_l1lnxu3m |
日経グローカル section.column_cw1pcvi > ul.container_cwihsqr > li.splitItem_ssxtw7q > a.link_l1lnxu3m |
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 |
|---|
エプソン、新中計に高まらぬ期待「引き算」不足のROIC経営 article.container_clrflg9 > div.textContainer_t10uyfy9 > div.articleContainer_axihtka > a.titleText_tnnopfn |
OpenAI、ノルウェーでAIインフラ投資計画「スターゲート」撤退 div.textArticleContainer_tud1wi2 > ul > li.textArticleList_t1qxhi24 > a.titleText_tnnopfn |
三菱マテが小名浜で銅鉱石由来の製錬停止非鉄大手が探る3つの生存策 div.textArticleContainer_tud1wi2 > ul > li.textArticleList_t1qxhi24 > a.titleText_tnnopfn |
SCREEN、米東部に研究拠点を新設半導体装置の先端技術開発 div.textArticleContainer_tud1wi2 > ul > li.textArticleList_t1qxhi24 > a.titleText_tnnopfn |
トレーディング業務で米銀大もうけ規制緩和の追い風 article.container_clrflg9 > div.textContainer_t10uyfy9 > div.articleContainer_axihtka > a.titleText_tnnopfn |
日経平均株価、米イラン交渉の進展期待が追い風（先読み株式相場） div.textArticleContainer_tud1wi2 > ul > li.textArticleList_t1qxhi24 > a.titleText_tnnopfn |
スニーカー企業がAI企業に「くら替え」米オールバーズ株7倍に急騰 div.textArticleContainer_tud1wi2 > ul > li.textArticleList_t1qxhi24 > a.titleText_tnnopfn |
拡大するFX投資3月の建玉残高は過去最高、中東緊迫で取引活発 div.textArticleContainer_tud1wi2 > ul > li.textArticleList_t1qxhi24 > a.titleText_tnnopfn |
北海道の春季交渉、賃上げペース継続のカギは？ 労使トップに聞く
14日 div.container_c6dtnx5 > div.container_c1sb2bza > div.column_c17geelt > a.anchor_a1buqtbz |
福島産米、再生の歩み続ける 外食向けや輸出に熱視線
15日 div.container_c6dtnx5 > div.container_c1sb2bza > div.column_c17geelt > a.anchor_a1buqtbz |
下水汚泥から肥料「クマムシくん」 埼玉の荒川水循環センター
5:00 div.container_c6dtnx5 > div.container_c1sb2bza > div.column_c17geelt > a.anchor_a1buqtbz |
信越の企業が高水準の賃上げ実施 物価高に対応、採用競争力向上狙う
5:00 div.container_c6dtnx5 > div.container_c1sb2bza > div.column_c17geelt > a.anchor_a1buqtbz |
柿安本店社長｢EC売上高､数年後に倍増｣ ブランド牛生かし商品開発
5:00 div.container_c6dtnx5 > div.container_c1sb2bza > div.column_c17geelt > a.anchor_a1buqtbz |
立山黒部アルペンルートが全線開通 「雪の大谷」高さは12メートル
15日 20:00 div.container_c6dtnx5 > div.container_c1sb2bza > div.column_c17geelt > a.anchor_a1buqtbz |
参天製薬、成長賭ける「自由診療」市場 近視薬など5000施設へ
5:00 div.container_c6dtnx5 > div.container_c1sb2bza > div.column_c17geelt > a.anchor_a1buqtbz |
岡山の萩原工業、繊維でパラグアイ国道支える コンクリ舗装を普及
15日 div.container_c6dtnx5 > div.container_c1sb2bza > div.column_c17geelt > a.anchor_a1buqtbz |
高松空港、濃霧でも着陸可能に 就航率改善や災害復旧拠点へ進化期待
5:00 div.container_c6dtnx5 > div.container_c1sb2bza > div.column_c17geelt > a.anchor_a1buqtbz |
三菱長崎機工、15センチ厚鋼板も曲げ加工 世界の発電所ニーズに対応
5:00 div.container_c6dtnx5 > div.container_c1sb2bza > div.column_c17geelt > a.anchor_a1buqtbz |
信越の企業が高水準の賃上げ実施 物価高に対応、採用競争力向上狙う
5:00 div.container_c6dtnx5 > div.container_c1sb2bza > div.column_c17geelt > a.anchor_a1buqtbz |
植物工場、自然光で電力高騰の逆風克服 立地5年で13%増え最多更新
10日 div.container_c6dtnx5 > div.container_c1sb2bza > div.column_c17geelt > a.anchor_a1buqtbz |
○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
●Form elements have associated labels
●`[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
●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
●`[lang]` attributes have a valid value
●Heading elements appear in a sequentially-descending order
●Document has a main landmark.
●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-hidden="true"]` elements do not contain focusable descendents
○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
○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
○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.
○`<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.
81
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 / Warning | Source |
|---|---|
| AttributionReporting | connect.facebook.net/en_US/fbevents.js line 279, col 769 |
●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 browser errors logged to the console
●No issues in the `Issues` panel in Chrome Devtools
●Ensure CSP is effective against XSS attacks
●Use a strong HSTS policy
●Ensure proper origin isolation with COOP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
●Page has valid source maps
○Redirects HTTP traffic to HTTPS
○Mitigate clickjacking with XFO or CSP
100
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.
○Structured data is valid
●Page isn’t blocked from indexing
●Document has a `<title>` element
●Document has a meta description
●Page has successful HTTP status code
●Links have descriptive text
●Links are crawlable
●robots.txt is valid
●Image elements have `[alt]` attributes
●Document has a valid `hreflang`
●Document has a valid `rel=canonical`