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Lighthouse Mobile

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

Audit breakdown by category with detailed findings.

25

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling

Why this matters

Performance issues directly impact user engagement and conversion rates.

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

Why this matters

Performance issues directly impact user engagement and conversion rates.

A long cache lifetime can speed up repeat visits to your page. Learn more about caching.

Why this matters

Performance issues directly impact user engagement and conversion rates.

RequestCache TTLTransfer Size
/chosun/N4M7MYSC6RD5FMNS2MJAOGE5WA.png0.0 ms941.3 KiB
/chosun/32SABVZCVRBDVLOLXLXM4COR2Y.png0.0 ms517.2 KiB
/chosun/VQOS3XBVRVFSXFMXU5DMGHRTBE.jpg0.0 ms147.6 KiB
/chosun/IQREMV7XHNF3LIOWRA7M3C6DVI.jpg0.0 ms138.7 KiB
image.chosun.com/arc/membership_premium/news-magazine1.png0.0 ms80.3 KiB
d3bniy34hlitso.cloudfront.net/prod/org/chosun.js?org=chosun300.0 s83.6 KiB
cdn.evgnet.com/beacon/chosun/chosunilbo/scripts/evergage.min.js120.0 s76.6 KiB
image.chosun.com/arc/mcp/mcp_pdf_background_paper.png0.0 ms61.2 KiB
/pagead/managed/js/activeview/current/ufs_web_display.js3600.0 s73.1 KiB
/pagead/managed/js/activeview/current/ufs_web_display.js3600.0 s73.1 KiB
/image-process/auth/iiif/3/publications__newspaper__99__7...86400.0 s71.9 KiB
cdn.id5-sync.com/api/1.0/esp.js3600.0 s34.7 KiB
adx.mocoplex.com/js/loadbanner.js0.0 ms22.9 KiB
s0.2mdn.net/879366/express_html_inpage_rendering_lib_200_287.js86400.0 s40.9 KiB
image.chosun.com/arc/membership_premium/chosun-c-logo-renew.svg0.0 ms13.7 KiB
image.chosun.com/arc/homepage/language-icon.svg0.0 ms12.6 KiB
ep2.adtrafficquality.google/sodar/VFc2VJAc.js3000.0 s14.4 KiB
/image-process/auth/iiif/3/publications__newspaper__99__7...86400.0 s27.4 KiB
image.chosun.com/arc/mcp/badge_light.png0.0 ms9.1 KiB
image.chosun.com/arc/mcp/badge_dark.png0.0 ms9.0 KiB
image.chosun.com/arc/homepage/todayluck-icon.svg0.0 ms7.6 KiB
static.chartbeat.com/js/chartbeat.js86400.0 s15.9 KiB
static.criteo.net/js/ld/publishertag.ids.js86400.0 s14.8 KiB
d3bniy34hlitso.cloudfront.net/prod/powaBoot.js300.0 s6.2 KiB
s.go-mpulse.net/boomerang/RDF8N-C9NSW-2SJR5-N2U59-8ECQC604800.0 s58.0 KiB
image.chosun.com/arc/homepage/home-membership-style.css?v20.0 ms5.6 KiB
image.chosun.com/arc/membership_premium/chosunM-c-free-logo.svg0.0 ms5.6 KiB
tags.crwdcntrl.net/lt/c/16589/sync.min.js86400.0 s13.2 KiB
image.chosun.com/arc/homepage/home-membership-renew.js0.0 ms2.4 KiB
image.chosun.com/arc/homepage/home-membership-renew.css0.0 ms1.5 KiB
image.chosun.com/arc/homepage/sdoku-icon.svg0.0 ms1.2 KiB
image.chosun.com/arc/homepage/home-membership-pdf-prod.js0.0 ms1.0 KiB
/pagead/js/r20260414/r20110914/client/qs_click_protection...1209600.0 s8.9 KiB
pagead2.googlesyndication.com/pagead/js/r20260414/r20110914/abg_lite_fy2021.js1209600.0 s8.4 KiB
image.chosun.com/arc/membership_premium/double-arrow-right.svg0.0 ms760 B
image.chosun.com/arc/homepage/home-membership-rolling-banner.css0.0 ms757 B
rum.beusable.net/load/b260304e103503u230?url=https%3A%2F%2Fwww.chosun.com%2F600.0 s687 B
script.beusable.net/ba.v1.0.0.min.js604800.0 s3.4 KiB
/pagead/js/r20260414/r20110914/elements/html/omrhp_fy2021.js1209600.0 s3.3 KiB
g.3gl.net/jp/4649/v3.3.0/M2262.0 s315 B
/pagead/js/r20260414/r20110914/client/window_focus_fy2021.js1209600.0 s1.3 KiB
cdn.jsdelivr.net/gh/prebid/shared-id/pubcid.js/docs/pubcid.min.js604800.0 s1003 B
/pagead/managed/js/activeview/current/ufs_web_display.js3600.0 s0 B
/pagead/managed/js/activeview/current/ufs_web_display.js3600.0 s0 B
adx.mocoplex.com/js/loadbanner.js0.0 ms0 B
adx.mocoplex.com/js/loadbanner.js0.0 ms0 B

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

A forced reflow occurs when JavaScript queries geometric properties (such as offsetWidth) after styles have been invalidated by a change to the DOM state. This can result in poor performance. Learn more about forced reflows and possible mitigations.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:90.815 source:map[column:193178 line:2 type:source-location url:https://www.chosun.com/pf/dist/engine/react.js?d=2211&mxId=00000000 urlProvider:network]]]
headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:72.564 source:map[column:36 line:512 type:source-location url:mainbtAI.js urlProvider:network]] map[reflowTime:10.68 source:map[column:32 line:685 type:source-location url:mainrt.js urlProvider:network]] map[reflowTime:57.138 source:map[column:153051 line:1 type:source-location url:https://www.chosun.com/pf/dist/engine/react.js?d=2211&mxId=00000000 urlProvider:network]] map[reflowTime:12.955 source:map[column:865808 line:1 type:source-location url:https://www.chosun.com/pf/dist/components/combinations/default.js?d=2211&mxId=00000000 urlProvider:network]] map[reflowTime:1.97 source:map[column:685011 line:1 type:source-location url:https://www.chosun.com/pf/dist/components/combinations/default.js?d=2211&mxId=00000000 urlProvider:network]] map[reflowTime:18.752 source:map[column:939456 line:1 type:source-location url:https://www.chosun.com/pf/dist/components/combinations/default.js?d=2211&mxId=00000000 urlProvider:network]]]

Each subpart has specific improvement strategies. Ideally, most of the LCP time should be spent on loading the resources, not within delays.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:label label:Subpart valueType:text] map[key:duration label:Duration valueType:ms]]
items: [map[duration:930.103 label:Time to first byte subpart:timeToFirstByte] map[duration:4962.796 label:Resource load delay subpart:resourceLoadDelay] map[duration:87.906 label:Resource load duration subpart:resourceLoadDuration] map[duration:119.131 label:Element render delay subpart:elementRenderDelay]]
lhId: page-0-IMG
nodeLabel: 與 현역 시도지사 ‘공천 전패’… 그 자리, 강경파들이 메웠다
path: 1,HTML,1,BODY,1,DIV,0,DIV,1,DIV,0,DIV,1,SECTION,0,ARTICLE,0,DIV,0,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,FIGURE,0,DIV,0,DIV,0,DIV,0,A,0,DIV,0,IMG
selector: div.article-print-sty2 > a > div.lazyload-wrapper > img.box--display-block
snippet: <img src="https://www.chosun.com/resizer/v2/VX6DNCIUVVEPNDJTKNIBBTEHYU.jpg?auth=a4a9…" alt="與 현역 시도지사 ‘공천 전패’… 그 자리, 강경파들이 메웠다" class="box--display-block">

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: 與 현역 시도지사 ‘공천 전패’… 그 자리, 강경파들이 메웠다
path: 1,HTML,1,BODY,1,DIV,0,DIV,1,DIV,0,DIV,1,SECTION,0,ARTICLE,0,DIV,0,SECTION,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,0,FIGURE,0,DIV,0,DIV,0,DIV,0,A,0,DIV,0,IMG
selector: div.article-print-sty2 > a > div.lazyload-wrapper > img.box--display-block
snippet: <img src="https://www.chosun.com/resizer/v2/VX6DNCIUVVEPNDJTKNIBBTEHYU.jpg?auth=a4a9…" alt="與 현역 시도지사 ‘공천 전패’… 그 자리, 강경파들이 메웠다" class="box--display-block">

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.

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer SizeDuration
www.chosun.com/arc/subs/p.min.js24.1 KiB151 ms
www.chosun.com/pf/resources/js/crypto-js.min_420.js?d=221123.5 KiB302 ms
cdn.evgnet.com/beacon/chosun/chosunilbo/scripts/evergage.min.js76.6 KiB1.2 s

Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLResource SizeEst Savings
Marketinng_banner_m div.raw-html > div.main-mem-banner > a#big > img.main_mem_banner_mobile
/chosun/32SABVZCVRBDVLOLXLXM4COR2Y.png516.1 KiB492.0 KiB
Marketinng_banner_m div.raw-html > div.main-mem-banner > a#big > img.main_mem_banner_mobile
/chosun/IQREMV7XHNF3LIOWRA7M3C6DVI.jpg138.1 KiB114.0 KiB
부아앙~ 시속 250㎞ 스포츠카 뜨자, 인제 산골에 19만명 몰렸다 div.article-print-sty2 > a > div.lazyload-wrapper > img.box--display-block
/resizer/v2/JXAAIL6Y2BG4ZBB2IPE74QVSDA.jpg?auth=846f3caf2...42.4 KiB37.5 KiB
Marketinng_banner_m div.raw-html > div.main-mem-banner > a#big > img.main_mem_banner_mobile
/resizer/v2/https://cloudfront-ap-northeast-1.images.arcp...28.4 KiB12.9 KiB

These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.

Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 951 ms
URLTime Spent
chosun.com/951 ms
www.chosun.com/0.0 ms

Diagnostics

Minifying JavaScript files can reduce payload sizes and script parse time. Learn how to minify JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 150 ms 37.7 KiB
URLTransfer SizeEst Savings
cdn.evgnet.com/beacon/chosun/chosunilbo/scripts/evergage.min.js76.0 KiB24.2 KiB
www.gstatic.com/firebasejs/11.6.0/firebase-app.js22.8 KiB13.5 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: 600 ms 109.0 KiB
URLTransfer SizeEst Savings
fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@400;500;700&display=swap68.0 KiB68.0 KiB
www.chosun.com/pf/resources/dist/chosun/css/style.css?d=221146.3 KiB41.0 KiB

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 4.7 s 1.0 MiB
URLTransfer SizeEst Savings
www.chosun.com/pf/dist/components/combinations/default.js?d=2211&mxId=00000000778.2 KiB483.1 KiB
www.googletagmanager.com/gtag/js?id=G-RXZWRP4R1X149.3 KiB105.5 KiB
/pagead/managed/js/gpt/m202604140101/pubads_impl.js?cb=31...187.7 KiB91.6 KiB
www.googletagmanager.com/gtag/js?id=G-RXZWRP4R1X&cx=c&gtm=4e64e1149.3 KiB60.3 KiB
d3bniy34hlitso.cloudfront.net/prod/org/chosun.js?org=chosun83.2 KiB59.0 KiB
www.googletagmanager.com/gtm.js?id=GTM-WNX23JV165.1 KiB50.5 KiB
cdn.evgnet.com/beacon/chosun/chosunilbo/scripts/evergage.min.js73.1 KiB34.1 KiB
s.go-mpulse.net/boomerang/RDF8N-C9NSW-2SJR5-N2U59-8ECQC57.8 KiB32.6 KiB
www.chosun.com/pf/dist/engine/react.js?d=2211&mxId=0000000089.4 KiB32.5 KiB
/pagead/managed/js/activeview/current/ufs_web_display.js73.1 KiB31.0 KiB
/pagead/managed/js/activeview/current/ufs_web_display.js73.1 KiB31.0 KiB
/pagead/managed/js/activeview/current/ufs_web_display.js73.1 KiB31.0 KiB
cdn.id5-sync.com/api/1.0/esp.js34.4 KiB30.7 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTotal CPU TimeScript EvaluationScript Parse
cdn.evgnet.com/beacon/chosun/chosunilbo/scripts/evergage.min.js10.1 s9.5 s91 ms
www.chosun.com/pf/dist/engine/react.js?d=2211&mxId=000000003.6 s2.9 s42 ms
www.chosun.com/3.3 s378 ms210 ms
/pagead/managed/js/gpt/m202604140101/pubads_impl.js?cb=31...3.2 s2.4 s101 ms
Unattributable1.6 s134 ms0.0 ms
/pagead/managed/js/activeview/current/ufs_web_display.js1.4 s1.3 s138 ms
www.chosun.com/pf/dist/components/combinations/default.js?d=2211&mxId=000000001.0 s551 ms438 ms
www.googletagmanager.com/gtm.js?id=GTM-WNX23JV866 ms714 ms92 ms
d3bniy34hlitso.cloudfront.net/prod/org/chosun.js?org=chosun644 ms502 ms38 ms
www.googletagmanager.com/gtag/js?id=G-RXZWRP4R1X&cx=c&gtm=4e64e1342 ms278 ms59 ms
mainbtAI.js257 ms62 ms0.0 ms
s.go-mpulse.net/boomerang/RDF8N-C9NSW-2SJR5-N2U59-8ECQC235 ms203 ms25 ms
www.googletagservices.com/tag/js/gpt.js165 ms102 ms16 ms
static.chartbeat.com/js/chartbeat.js126 ms115 ms5.4 ms
www.googletagmanager.com/gtag/js?id=G-RXZWRP4R1X115 ms53 ms60 ms
ep2.adtrafficquality.google/sodar/sodar2.js95 ms88 ms3.1 ms
tags.crwdcntrl.net/lt/c/16589/sync.min.js89 ms75 ms8.9 ms
oa.openxcdn.net/esp.js86 ms80 ms3.2 ms
cdn.id5-sync.com/api/1.0/esp.js61 ms38 ms17 ms
static.criteo.net/js/ld/publishertag.ids.js56 ms48 ms6.7 ms
mainrt.js50 ms21 ms0.0 ms

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work

Why this matters

Performance issues directly impact user engagement and conversion rates.

CategoryTime Spent
Script Evaluation19.7 s
Other2.5 s
Style & Layout1.6 s
Script Parsing & Compilation1.4 s
Parse HTML & CSS1.3 s
Garbage Collection861 ms
Rendering585 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 7.2 KiB
URLTransfer SizeEst Savings
fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@400;500;700&display=swap68.4 KiB7.2 KiB

Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer Size
/chosun/N4M7MYSC6RD5FMNS2MJAOGE5WA.png941.3 KiB
www.chosun.com/ChosunNM.woff2935.8 KiB
www.chosun.com/pf/dist/components/combinations/default.js?d=2211&mxId=00000000785.3 KiB
/chosun/32SABVZCVRBDVLOLXLXM4COR2Y.png517.2 KiB
www.chosun.com/286.0 KiB
/resizer/v2/XZBVMTQ3WFAO5BFOVV7A4RTD5Q.jpg?auth=20982d730...190.8 KiB
/pagead/managed/js/gpt/m202604140101/pubads_impl.js?cb=31...187.7 KiB
www.chosun.com/NotoSansKR-Regular.woff2166.9 KiB
www.chosun.com/NotoSansKR-Bold.woff2166.8 KiB
www.chosun.com/NotoSansKR-Medium.woff2166.6 KiB

Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL
與 현역 시도지사 ‘공천 전패’… 그 자리, 강경파들이 메웠다 div.article-print-sty2 > a > div.lazyload-wrapper > img.box--display-block
/resizer/v2/VX6DNCIUVVEPNDJTKNIBBTEHYU.jpg?auth=a4a989ab2...
美항모 3척 모두 중동 간 사이… 中, 남중국해에 부유식 장벽 등 통제 강화 div.article-print-sty2 > a > div.lazyload-wrapper > img.box--display-block
/resizer/v2/CZI5KZVQ5NHPTDPNTH4ASQ2SGI.jpg?auth=ed20aac6c...
부아앙~ 시속 250㎞ 스포츠카 뜨자, 인제 산골에 19만명 몰렸다 div.article-print-sty2 > a > div.lazyload-wrapper > img.box--display-block
/resizer/v2/JXAAIL6Y2BG4ZBB2IPE74QVSDA.jpg?auth=846f3caf2...
div.today-chosun-wrapper > a.today-chosun-box > div.left-item > img div.today-chosun-wrapper > a.today-chosun-box > div.left-item > img
image.chosun.com/arc/homepage/todayluck-icon.svg
div.today-chosun-wrapper > a.today-chosun-box > div.left-item > img div.today-chosun-wrapper > a.today-chosun-box > div.left-item > img
image.chosun.com/arc/homepage/sdoku-icon.svg
div.today-chosun-wrapper > div.today-chosun-box > div.left-item > img div.today-chosun-wrapper > div.today-chosun-box > div.left-item > img
image.chosun.com/arc/homepage/language-icon.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
●Modern HTTP
●Optimize viewport for mobile
●User Timing marks and measures 13 user timings
●Avoid long main-thread tasks 20 long tasks found
●Avoid non-composited animations 16 animated elements found
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 250 ms
●Server Backend Latencies 520 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 80 ms
●Avoid large layout shifts 5 layout shifts found
○INP breakdown
68

Accessibility

These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.

ARIA

Focusable descendents within an `[aria-hidden="true"]` element prevent those interactive elements from being available to users of assistive technologies like screen readers. Learn how `aria-hidden` affects focusable elements.

Why this matters

Informational: a Permissions-Policy directive showing feature -> allowed origins.

Source: MDN Permissions-Policy

Failing Elements
Marketinng_banner_pc div.slick-slider > div.slick-list > div.slick-track > div.slick-slide
Marketinng_banner_pc div.slick-slider > div.slick-list > div.slick-track > div.slick-slide
Marketinng_banner_pc div.slick-slider > div.slick-list > div.slick-track > div.slick-slide
Marketinng_banner_pc div.slick-slider > div.slick-list > div.slick-track > div.slick-slide
Marketinng_banner_pc div.slick-slider > div.slick-list > div.slick-track > div.slick-slide
Marketinng_banner_pc div.slick-slider > div.slick-list > div.slick-track > div.slick-slide
div.slick-slider > div.slick-list > div.slick-track > div.slick-slide div.slick-slider > div.slick-list > div.slick-track > div.slick-slide
div.slick-slider > div.slick-list > div.slick-track > div.slick-slide div.slick-slider > div.slick-list > div.slick-track > div.slick-slide
div.slick-slider > div.slick-list > div.slick-track > div.slick-slide div.slick-slider > div.slick-list > div.slick-track > div.slick-slide
div.slick-slider > div.slick-list > div.slick-track > div.slick-slide div.slick-slider > div.slick-list > div.slick-track > div.slick-slide
div.slick-slider > div.slick-list > div.slick-track > div.slick-slide div.slick-slider > div.slick-list > div.slick-track > div.slick-slide
div.slick-slider > div.slick-list > div.slick-track > div.slick-slide div.slick-slider > div.slick-list > div.slick-track > div.slick-slide
div.slick-slider > div.slick-list > div.slick-track > div.slick-slide div.slick-slider > div.slick-list > div.slick-track > div.slick-slide
div.slick-slider > div.slick-list > div.slick-track > div.slick-slide div.slick-slider > div.slick-list > div.slick-track > div.slick-slide

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Names and labels

When a button doesn't have an accessible name, screen readers announce it as "button", making it unusable for users who rely on screen readers. Learn how to make buttons more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.carousel--controls > div > span > button div.carousel--controls > div > span > button
div.carousel--controls > div > span > button.btnActive div.carousel--controls > div > span > button.btnActive
div.carousel--controls > div > span > button div.carousel--controls > div > span > button
div.carousel--controls > div > span > button div.carousel--controls > div > span > button
div.carousel--controls > div > span > button.btnActive div.carousel--controls > div > span > button.btnActive
div.carousel--controls > div > span > button div.carousel--controls > div > span > button
div.carousel--controls > div > span > button div.carousel--controls > div > span > button

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.today-chosun-wrapper > div.today-chosun-box > div.left-item > img div.today-chosun-wrapper > div.today-chosun-box > div.left-item > img
div.today-chosun-wrapper > a.today-chosun-box > div.left-item > img div.today-chosun-wrapper > a.today-chosun-box > div.left-item > img
div.today-chosun-wrapper > a.today-chosun-box > div.left-item > img div.today-chosun-wrapper > a.today-chosun-box > div.left-item > img

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.mem--home-banner > div.mem--home-banner__bar > div.menu-bar-wrapper > a.menu-bar-logo div.mem--home-banner > div.mem--home-banner__bar > div.menu-bar-wrapper > a.menu-bar-logo
div.width--100 > div.article-print-sty1 > div.article-print-sty2 > a div.width--100 > div.article-print-sty1 > div.article-print-sty2 > a

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

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
김부겸 민주당 대구시장 후보는 “대구에서 국민의힘은 일을 안 해도 계속 뽑아줬지만 민주당은 일할 기회조차 주지 않았다”며 “이번엔 대구 대전환… div.story-card > div.story-card-block > div.story-card-component > span
중국 과학계가 세계 최고 권위 미국 학회와 갈등을 빚으면서 미·중 패권 경쟁이 학계로까지 확장되고 있다. 중국 최대 과학계 단체가 미국 신경정… div.story-card > div.story-card-block > div.story-card-component > span
미국과 이란이 종전 합의에 다가서고 있다는 신호가 이어지면서 뉴욕 증시가 상승했다. 특히 대형주 위주의 S&P500 지수는 사상 처음(종가 기… div.story-card > div.story-card-block > div.story-card-component > span
도널드 트럼프 미국 대통령이 자신이 호르무즈 해협을 영구적으로 개방하고 있다며 “중국이 매우 기뻐하고 있다”고 했다. 다음 달 열릴 미·중 정… div.story-card > div.story-card-block > div.story-card-component > span
사설 div.story-card-component > a.story-card__headline > div.left__label__box > span.left__label
사설 div.story-card-component > a.story-card__headline > div.left__label__box > span.left__label
사설 div.story-card-component > a.story-card__headline > div.left__label__box > span.left__label
경제포커스 div.story-card-wrapper > div.story-card > div.story-card-block > div.story-card-component
기자의 시각 div.story-card-wrapper > div.story-card > div.story-card-block > div.story-card-component
윤희영의 News English div.story-card-wrapper > div.story-card > div.story-card-block > div.story-card-component
박찬용의 물건만담 div.story-card-wrapper > div.story-card > div.story-card-block > div.story-card-component
만물상 div.story-card-wrapper > div.story-card > div.story-card-block > div.story-card-component
전남 무안국제공항 일대에서 제주항공 여객기 참사 희생자들의 미수습 유해를 찾기 위한 재수색이 지난 13일부터 다시 시작됐다. 하지만 첫날 현장… div.story-card > div.story-card-block > div.story-card-component > span

These are opportunities to improve the legibility of your content.

Tables and lists

Screen readers require list items (`<li>`) to be contained within a parent `<ul>`, `<ol>` or `<menu>` to be announced properly. Learn more about proper list structure.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
"美 무기 사" 방위비 분담 압박… 'K-방산'의 씨앗 됐다 div.flex-chain-wrapper > section.flex-chain > div.flex-chain__column > li.related-links__item
"韓, 태평양 전초기지"… 한미동맹이 바꾼 美 군사 지도 div.flex-chain-wrapper > section.flex-chain > div.flex-chain__column > li.related-links__item

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Best practices

Disabling zooming is problematic for users with low vision who rely on screen magnification to properly see the contents of a web page. Learn more about the viewport meta tag.

Why this matters

Informational: a Permissions-Policy directive showing feature -> allowed origins.

Source: MDN Permissions-Policy

Failing Elements
head > meta head > meta

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html html

These items highlight common accessibility best practices.

○Interactive controls are keyboard focusable
○Interactive elements indicate their purpose and state
○The page has a logical tab order
○Visual order on the page follows DOM order
○User focus is not accidentally trapped in a region
○The user's focus is directed to new content added to the page
○HTML5 landmark elements are used to improve navigation
○Offscreen content is hidden from assistive technology
○Custom controls have associated labels
○Custom controls have ARIA roles
●`[aria-*]` attributes match their roles
●`[aria-hidden="true"]` is not present on the document `<body>`
●`[role]`s have all required `[aria-*]` attributes
●`[role]` values are valid
●`[aria-*]` attributes have valid values
●`[aria-*]` attributes are valid and not misspelled
●`button`, `link`, and `menuitem` elements have accessible names
●ARIA attributes are used as specified for the element's role
●Elements use only permitted ARIA attributes
●Document has a `<title>` element
●`<frame>` or `<iframe>` elements have a title
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
●No element has a `[tabindex]` value greater than 0
●Touch targets have sufficient size and spacing.
●Deprecated ARIA roles were not used
●The page contains a heading, skip link, or landmark region
●ARIA IDs are unique
●Identical links have the same purpose.
○`[accesskey]` values are unique
○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
○ARIA input fields have accessible names
○ARIA `meter` elements have accessible names
○ARIA `progressbar` elements have accessible names
○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
○`[role]`s are contained by their required parent element
○Elements with the `role=text` attribute do not have focusable descendents.
○ARIA toggle fields have accessible names
○ARIA `tooltip` elements have accessible names
○ARIA `treeitem` elements have accessible names
○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
○Definition list items are wrapped in `<dl>` elements
○No form fields have multiple labels
○Heading elements appear in a sequentially-descending order
○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
○Input buttons have discernible text.
○`<input type="image">` elements have `[alt]` text
○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.
○Elements with visible text labels have matching accessible names.
○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.
50

Best Practices

Trust and Safety

All sites should be protected with HTTPS, even ones that don't handle sensitive data. This includes avoiding mixed content, where some resources are loaded over HTTP despite the initial request being served over HTTPS. HTTPS prevents intruders from tampering with or passively listening in on the communications between your app and your users, and is a prerequisite for HTTP/2 and many new web platform APIs. Learn more about HTTPS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Insecure URLRequest Resolution
image.chosun.com/arc/mcp/mcp_pdf_background_paper.pngAutomatically upgraded to HTTPS

Users are mistrustful of or confused by sites that request to send notifications without context. Consider tying the request to user gestures instead. Learn more about responsibly getting permission for notifications.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Source
www.chosun.com/ line 132, col 23

General

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / WarningSource
SharedStorage
/pagead/managed/js/activeview/current/ufs_web_display.js line 252, col 234

Errors logged to the console indicate unresolved problems. They can come from network request failures and other browser concerns. Learn more about this errors in console diagnostic audit

Why this matters

Performance issues directly impact user engagement and conversion rates.

SourceDescription
cdn.evgnet.com/beacon/chosun/chosunilbo/scripts/evergage.min.js line 1338, col 16
쿠키를 찾을 수 없습니다.
cdn.evgnet.com/beacon/chosun/chosunilbo/scripts/evergage.min.js line 1338, col 16
쿠키를 찾을 수 없습니다.
cdn.evgnet.com/beacon/chosun/chosunilbo/scripts/evergage.min.js line 1338, col 16
쿠키를 찾을 수 없습니다.

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
Mixed content

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLMap URL
www.chosun.com/pf/dist/components/combinations/default.js?d=2211&mxId=00000000
www.chosun.com/
www.gstatic.com/firebasejs/11.6.0/firebase-messaging.jswww.gstatic.com/firebasejs/11.6.0/firebase-messaging.js.map
www.gstatic.com/firebasejs/11.6.0/firebase-app.jswww.gstatic.com/firebasejs/11.6.0/firebase-app.js.map
●Avoids third-party cookies
●Allows users to paste into input fields
●Avoids requesting the geolocation 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 clickjacking with XFO or CSP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
○Redirects HTTP traffic to HTTPS
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.

Content Best Practices

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.today-chosun-wrapper > div.today-chosun-box > div.left-item > img div.today-chosun-wrapper > div.today-chosun-box > div.left-item > img
div.today-chosun-wrapper > a.today-chosun-box > div.left-item > img div.today-chosun-wrapper > a.today-chosun-box > div.left-item > img
div.today-chosun-wrapper > a.today-chosun-box > div.left-item > img div.today-chosun-wrapper > a.today-chosun-box > div.left-item > img

Format your HTML in a way that enables crawlers to better understand your app’s content.

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

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