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Lighthouse Desktop

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

Audit breakdown by category with detailed findings.

51

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
/news/cms/2026/04/06/news-p.v1.20260406.c5c03b105fda4e05a...0.0 ms2.9 MiB
/news/cms/2026/04/12/news-p.v1.20260412.0a6d87e896864f909...0.0 ms2.2 MiB
/svc/desking/1003/index/202604/X20250829165731_226_202604...0.0 ms1.3 MiB
/news/cms/2026/04/14/news-p.v1.20260414.a79f341968d3408cb...0.0 ms1.3 MiB
/news/cms/2026/04/15/news-p.v1.20260415.80781896360a49fea...0.0 ms972.2 KiB
wimg.heraldcorp.com/svc/series/202601/583ceb39-4692-4f5d-be5a-69bbb42daab0.png0.0 ms848.2 KiB
/svc/desking/1003/index/202604/X20250829165800_226_202604...0.0 ms638.4 KiB
/news/cms/2026/04/15/news-p.v1.20260415.4dfd435e1f5d4bdf8...0.0 ms475.1 KiB
/news/cms/2026/04/15/news-p.v1.20260415.ec6b5e90d600402aa...0.0 ms319.7 KiB
/news/cms/2026/04/13/news-p.v1.20260413.f89604c15d7e4fd9b...0.0 ms310.9 KiB
/svc/desking/1003/index/202604/X20250829165707_226_202604...0.0 ms193.4 KiB
/svc/desking/1003/index/202604/X20250905100912_226_202604...0.0 ms175.4 KiB
api.climateclock.world/assets/widget-v2.js600.0 s160.5 KiB
wimg.heraldcorp.com/svc/banner/202501/9f74a8be-cfa2-487f-8ba2-7e4a37a70141.png0.0 ms116.9 KiB
static.heraldcorp.com/wbazic/kh/www/image/kh_event_bnn_pdf.jpg10800.0 s132.0 KiB
wimg.heraldcorp.com/svc/series/202412/89a89eba-7c0a-4f49-bfcf-d2372c7d2793.png0.0 ms56.3 KiB
static.heraldcorp.com/wbazic/kh/www/image/kh_event_bnn_770x100_260330.jpg10800.0 s80.2 KiB
wimg.heraldcorp.com/svc/banner/202604/3bd0f29e-8c63-4484-b276-845033672e53.jpg0.0 ms46.3 KiB
wimg.heraldcorp.com/svc/banner/202603/af9fab3a-a955-4ba4-98ba-3f966126cd96.jpg0.0 ms38.7 KiB
wimg.heraldcorp.com/svc/banner/202604/43885a48-8a60-4c1e-8189-71e4d4fe5235.jpg0.0 ms33.4 KiB
wimg.heraldcorp.com/svc/banner/202603/cfe68673-e5c3-4412-97d0-01aa3835188f.jpg0.0 ms32.2 KiB
t1.kakaocdn.net/kakao_js_sdk/v1/kakao.min.js2427.0 s34.5 KiB
wimg.heraldcorp.com/svc/banner/202510/316f4649-26cc-4d09-97f7-1745537cd982.jpg0.0 ms26.1 KiB
wimg.heraldcorp.com/svc/banner/202501/9232a43a-4d9c-4e6a-a239-44304cff78a5.jpg0.0 ms25.9 KiB
wimg.heraldcorp.com/svc/banner/202604/9a17034f-c6b5-41db-b06d-4627d32fc3e7.jpg0.0 ms24.4 KiB
wimg.heraldcorp.com/svc/banner/202603/810cf634-6d19-450a-a3fe-c704de60f5da.jpg0.0 ms21.0 KiB
wimg.heraldcorp.com/svc/banner/202412/ddc5ffa1-fec5-4fb2-9857-4fa66efd3af4.jpg0.0 ms20.9 KiB
wimg.heraldcorp.com/svc/banner/202511/10b7620c-008c-49f3-81d2-9b62cb326639.jpg0.0 ms17.2 KiB
www.google-analytics.com/analytics.js7200.0 s20.9 KiB
ssl.pstatic.net/melona/libs/gfp-nac-module/synchronizer.js1945.0 s18.2 KiB
wimg.heraldcorp.com/svc/banner/202412/33637421-f556-4c41-bea3-0e7d9d26f580.jpg0.0 ms15.0 KiB
wimg.heraldcorp.com/svc/banner/202603/826e1dea-478b-444a-b60a-928d9f66fac8.jpg0.0 ms14.8 KiB
wimg.heraldcorp.com/svc/banner/202602/cdcd744b-a1bf-4856-845b-03d121d460a9.gif0.0 ms13.5 KiB
wimg.heraldcorp.com/svc/banner/202510/404470d6-93f9-450e-9001-886e979fa172.jpg0.0 ms11.9 KiB
wimg.heraldcorp.com/svc/banner/202411/b2b9a3bc-21f7-4619-a67d-2c0c490be8ea.jpg0.0 ms11.2 KiB
wcs.naver.net/wcslog.js191.0 s10.5 KiB
wimg.heraldcorp.com/svc/banner/202411/7dd8e3e2-7682-4320-90e6-d1018419676b.jpg0.0 ms9.0 KiB
wimg.heraldcorp.com/svc/banner/202603/98695ec8-c583-4e09-9dce-cbe6a2f56a91.jpg0.0 ms8.9 KiB
static.heraldcorp.com/js/lib/utils.js?v=20260205141310800.0 s11.6 KiB
wimg.heraldcorp.com/svc/banner/202603/ab5fd6ac-8413-4037-9664-d584e56ceff7.jpg0.0 ms7.4 KiB
wimg.heraldcorp.com/svc/banner/202411/ba0f5010-d01d-45f3-9eee-801bd1b2179c.jpg0.0 ms7.3 KiB
cdn.jsdelivr.net/npm/swiper@11/swiper-bundle.min.js604800.0 s43.2 KiB
static.heraldcorp.com/js/lib/utils.kh.hrd.js?v=20260205141310800.0 s4.7 KiB
static.heraldcorp.com/wbazic/kh/www/js/ui.js10800.0 s3.6 KiB
static.heraldcorp.com/wbazic/kh/www/image/img_other_logo_realfoods.png10800.0 s3.1 KiB
static.heraldcorp.com/js/lib/sscad.js?v=20260205141310800.0 s2.4 KiB
static.heraldcorp.com/js/lib/more.js?v=20260205141310800.0 s2.3 KiB
static.heraldcorp.com/js/lib/ajax.js?v=20260205141310800.0 s2.3 KiB
static.heraldcorp.com/js/lib/lazyimg.js10800.0 s2.2 KiB
open.spotify.com/embed/iframe-api/v10.0 ms1.3 KiB
static.heraldcorp.com/wbazic/kh/www/image/img_other_logo_hk.png10800.0 s1.5 KiB
cdn.jsdelivr.net/npm/swiper@11/swiper-bundle.min.css604800.0 s5.1 KiB

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:0.12633599999999998] map[node:map[boundingRect:map[bottom:556 height:335 left:418 right:881 top:221 width:463] lhId:page-4-IMG nodeLabel:article.headline > div.headline_item > a.news_img > img path:1,HTML,1,BODY,1,MAIN,0,SECTION,0,ARTICLE,0,DIV,1,A,0,IMG selector:article.headline > div.headline_item > a.news_img > img snippet:<img src="https://wimg.heraldcorp.com/news/cms/2026/04/15/news-p.v1.20260415.8078189…" alt=""> type:node] score:0.122553] map[node:map[boundingRect:map[bottom:1439 height:484 left:110 right:881 top:955 width:771] lhId:page-47-ARTICLE nodeLabel:More stories Asian scholars slam Trump interventionism in joint statement Sig… path:1,HTML,1,BODY,1,MAIN,0,SECTION,3,ARTICLE selector:body > main.div_layout > section > article.base snippet:<article class="base"> type:node] score:0.002819 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:925 height:100 left:110 right:880 top:825 width:770] lhId:page-20-IMG nodeLabel:section > article.gallerybanner > a > img path:1,HTML,1,BODY,1,MAIN,0,SECTION,1,ARTICLE,0,A,0,IMG selector:section > article.gallerybanner > a > img snippet:<img src="//static.heraldcorp.com/wbazic/kh/www/image/kh_event_bnn_770x100_260330.jpg" alt=""> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:373 height:130 left:110 right:398 top:243 width:288] lhId:page-50-P nodeLabel:Seoul locks in 273m barrels oil, 2.1m tons naphtha shielded from Hormuz risks path:1,HTML,1,BODY,1,MAIN,0,SECTION,0,ARTICLE,0,DIV,0,DIV,0,A,1,P selector:div.headline_item > div.news_txt > a.txt_area > p.news_title snippet:<p class="news_title ellipsis4"> type:node] score:0.000859 subItems:map[items:[map[cause:Web font extra:map[type:url value:https://fonts.gstatic.com/s/frankruhllibre/v23/j8_w6_fAw7jrcalD7oKYNX0QfAnPW7Dl4brkiY8.woff2]] map[cause:Web font extra:map[type:url value:https://fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2]] map[cause:Web font extra:map[type:url value:https://fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMaxKUBHMdazTgWw.woff2]]] type:subitems]] map[node:map[boundingRect:map[bottom:89 height:26 left:1053 right:1240 top:63 width:187] lhId:page-52-UL nodeLabel:Log in Print edition path:1,HTML,1,BODY,0,HEADER,0,DIV,3,UL selector:body > header > div.header_area > ul.header_btn_list snippet:<ul class="header_btn_list"> type:node] score:0.000105] map[node:map[boundingRect:map[bottom:373 height:130 left:110 right:398 top:243 width:288] lhId:page-50-P nodeLabel:Seoul locks in 273m barrels oil, 2.1m tons naphtha shielded from Hormuz risks path:1,HTML,1,BODY,1,MAIN,0,SECTION,0,ARTICLE,0,DIV,0,DIV,0,A,1,P selector:div.headline_item > div.news_txt > a.txt_area > p.news_title snippet:<p class="news_title ellipsis4"> type:node] score:0]]

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:9.442 source:map[column:72337 line:13 type:source-location url:https://cdn.jsdelivr.net/npm/swiper@11/swiper-bundle.min.js urlProvider:network]]]
headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:22.992 source:map[column:4766 line:12 type:source-location url:https://cdn.jsdelivr.net/npm/swiper@11/swiper-bundle.min.js urlProvider:network]] map[reflowTime:73.415 source:map[column:10640 line:12 type:source-location url:https://cdn.jsdelivr.net/npm/swiper@11/swiper-bundle.min.js urlProvider:network]] map[reflowTime:2.99 source:map[column:11120 line:12 type:source-location url:https://cdn.jsdelivr.net/npm/swiper@11/swiper-bundle.min.js urlProvider:network]] map[reflowTime:0.487 source:map[column:16608 line:12 type:source-location url:https://cdn.jsdelivr.net/npm/swiper@11/swiper-bundle.min.js urlProvider:network]] map[reflowTime:4.802 source:map[column:48353 line:12 type:source-location url:https://cdn.jsdelivr.net/npm/swiper@11/swiper-bundle.min.js urlProvider:network]] map[reflowTime:0.658 source:map[column:16330 line:12 type:source-location url:https://cdn.jsdelivr.net/npm/swiper@11/swiper-bundle.min.js urlProvider:network]]]

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLResource SizeEst Savings
ul#swiper-wrapper-29a98a6d840352a3 > li.swiper-slide > a.graphic_news_link > img ul#swiper-wrapper-29a98a6d840352a3 > li.swiper-slide > a.graphic_news_link > img
/news/cms/2026/04/06/news-p.v1.20260406.c5c03b105fda4e05a...2.9 MiB2.8 MiB
ul#swiper-wrapper-29a98a6d840352a3 > li.swiper-slide > a.graphic_news_link > img ul#swiper-wrapper-29a98a6d840352a3 > li.swiper-slide > a.graphic_news_link > img
/news/cms/2026/04/12/news-p.v1.20260412.0a6d87e896864f909...2.2 MiB2.1 MiB
li > a > div.watch_img > img li > a > div.watch_img > img
/svc/desking/1003/index/202604/X20250829165731_226_202604...1.3 MiB1.3 MiB
ul#swiper-wrapper-29a98a6d840352a3 > li.swiper-slide > a.graphic_news_link > img ul#swiper-wrapper-29a98a6d840352a3 > li.swiper-slide > a.graphic_news_link > img
/news/cms/2026/04/14/news-p.v1.20260414.a79f341968d3408cb...1.3 MiB1.2 MiB
article.headline > div.headline_item > a.news_img > img article.headline > div.headline_item > a.news_img > img
/news/cms/2026/04/15/news-p.v1.20260415.80781896360a49fea...970.8 KiB911.8 KiB
Celeb Reads a > div.series_img > div.img_wrap > img
wimg.heraldcorp.com/svc/series/202601/583ceb39-4692-4f5d-be5a-69bbb42daab0.png846.9 KiB845.2 KiB
li > a > div.watch_img > img li > a > div.watch_img > img
/svc/desking/1003/index/202604/X20250829165800_226_202604...637.3 KiB630.2 KiB
article.top_news > a > div.news_img > img article.top_news > a > div.news_img > img
/news/cms/2026/04/15/news-p.v1.20260415.4dfd435e1f5d4bdf8...474.2 KiB460.8 KiB
ul#swiper-wrapper-29a98a6d840352a3 > li.swiper-slide > a.graphic_news_link > img ul#swiper-wrapper-29a98a6d840352a3 > li.swiper-slide > a.graphic_news_link > img
/news/cms/2026/04/15/news-p.v1.20260415.ec6b5e90d600402aa...319.0 KiB280.6 KiB
ul#swiper-wrapper-29a98a6d840352a3 > li.swiper-slide > a.graphic_news_link > img ul#swiper-wrapper-29a98a6d840352a3 > li.swiper-slide > a.graphic_news_link > img
/news/cms/2026/04/13/news-p.v1.20260413.f89604c15d7e4fd9b...310.1 KiB271.9 KiB
li > a > div.watch_img > img li > a > div.watch_img > img
/svc/desking/1003/index/202604/X20250829165707_226_202604...192.8 KiB185.8 KiB
li.div_item > a > div.news_img > img li.div_item > a > div.news_img > img
/news/cms/2026/04/15/news-p.v1.20260415.cd41881b69324a588...193.1 KiB177.6 KiB
li > a > div.watch_img > img li > a > div.watch_img > img
/svc/desking/1003/index/202604/X20250905100912_226_202604...174.9 KiB167.4 KiB
article.our_subscribe > a > div.news_img > img article.our_subscribe > a > div.news_img > img
/news/cms/2026/04/15/news-a.v1.20260414.67fda352b34148e59...151.8 KiB140.8 KiB
When BTS reads, the world follows li > a > div.news_img > img
/news/cms/2026/03/21/news-a.v1.20260321.017bb290d9e84606b...116.3 KiB115.0 KiB
li.div_item > a > div.news_img > img li.div_item > a > div.news_img > img
/news/cms/2026/04/15/news-p.v1.20260415.d4e4e30f9554428a8...127.1 KiB112.7 KiB
cooking ul > li > a > img#hbanner_120_195
wimg.heraldcorp.com/svc/banner/202501/9f74a8be-cfa2-487f-8ba2-7e4a37a70141.png116.4 KiB112.0 KiB
li.swiper-slide > a > div.photo_img > img li.swiper-slide > a > div.photo_img > img
/news/cms/2026/04/15/news-p.v1.20260415.ec8c55107e4f48579...113.6 KiB104.4 KiB
li > a > div.news_img > img li > a > div.news_img > img
/svc/desking/1003/Kpop/202604/A10717586_238_2026041513121...79.2 KiB73.6 KiB
li.div_item > a > div.news_img > img li.div_item > a > div.news_img > img
/news/cms/2026/04/15/news-a.v1.20260415.fc4d257c631d4d7a8...85.2 KiB70.4 KiB
section > article.gallerybanner > a > img section > article.gallerybanner > a > img
static.heraldcorp.com/wbazic/kh/www/image/kh_event_bnn_770x100_260330.jpg79.7 KiB67.2 KiB
li.swiper-slide > a > div.photo_img > img li.swiper-slide > a > div.photo_img > img
/news/cms/2026/04/14/news-a.v1.20260414.f5313389ba644bc98...73.2 KiB64.1 KiB
K-pop 101 a > div.series_img > div.img_wrap > img
wimg.heraldcorp.com/svc/series/202412/89a89eba-7c0a-4f49-bfcf-d2372c7d2793.png55.8 KiB55.1 KiB
20260325_신한카드 ul > li > a > img#hbanner_101_945
wimg.heraldcorp.com/svc/banner/202603/af9fab3a-a955-4ba4-98ba-3f966126cd96.jpg38.3 KiB33.9 KiB
article.our_subscribe > a > div.news_img > img article.our_subscribe > a > div.news_img > img
/news/cms/2026/04/14/news-p.v1.20260409.2b8e28ef9edd4d848...37.4 KiB26.3 KiB
li > a > div.news_img > img li > a > div.news_img > img
/svc/desking/1003/index/202604/A10717012_398_202604151205...24.0 KiB22.7 KiB
li > a > div.news_img > img li > a > div.news_img > img
/svc/desking/1003/LifenCulture/202604/A10717658_234_20260...23.6 KiB22.3 KiB
Director’s bookshelf offers clues to ‘The King’s Warden’ phenomenon li > a > div.news_img > img
/news/cms/2026/03/25/news-p.v1.20260325.a24db66b64e741228...22.5 KiB21.3 KiB
PC구독배너 ul > li > a > img#hbanner_125_181
wimg.heraldcorp.com/svc/banner/202501/9232a43a-4d9c-4e6a-a239-44304cff78a5.jpg25.5 KiB21.1 KiB
Meet, perhaps date your favorite K-pop star with VR headgear li > a > div.news_img > img
/news/cms/2025/06/24/news-p.v1.20250624.ca4c97833f2c4ac1b...22.0 KiB20.9 KiB
20260402_KB증권 ul > li > a > img#hbanner_102_973
wimg.heraldcorp.com/svc/banner/202604/9a17034f-c6b5-41db-b06d-4627d32fc3e7.jpg24.0 KiB19.6 KiB
li > a > div.news_img > img li > a > div.news_img > img
/news/cms/2026/04/15/news-a.v1.20260415.53e4919c87d8483a8...15.8 KiB14.6 KiB
article.gallery_list > div.gallery > div.gallery_img > div.gallery_img_book article.gallery_list > div.gallery > div.gallery_img > div.gallery_img_book
static.heraldcorp.com/wbazic/kh/www/image/kh_event_bnn_pdf.jpg131.5 KiB13.9 KiB
li > a > div.news_img > img li > a > div.news_img > img
/news/cms/2026/04/15/news-p.v1.20260415.d4e4e30f9554428a8...15.0 KiB13.7 KiB
Bringing Bay Area swagger to K-pop: Inside the journey of SM’s former hitmaker li > a > div.news_img > img
/news/cms/2025/05/30/news-p.v1.20250528.efd5b9beb1084fe9b...13.9 KiB12.8 KiB
li.div_item > a > div.news_img > img li.div_item > a > div.news_img > img
/news/cms/2026/04/15/rcv.YNA.20260415.PYH2026041509070001...25.6 KiB11.2 KiB
PC 메인 배너1 ul > li > a > img#hbanner_100_137
wimg.heraldcorp.com/svc/banner/202412/33637421-f556-4c41-bea3-0e7d9d26f580.jpg14.6 KiB10.2 KiB
메인 하단 배너1 ul > li > a > img#hbanner_61_83
wimg.heraldcorp.com/svc/banner/202411/b2b9a3bc-21f7-4619-a67d-2c0c490be8ea.jpg10.8 KiB9.0 KiB
li.swiper-slide > a > div.photo_img > img li.swiper-slide > a > div.photo_img > img
/news/cms/2026/04/14/rcv.YNA.20260414.PYH2026041406080005...16.1 KiB6.9 KiB
메인 하단 배너2 ul > li > a > img#hbanner_62_84
wimg.heraldcorp.com/svc/banner/202411/7dd8e3e2-7682-4320-90e6-d1018419676b.jpg8.5 KiB6.7 KiB
li > a > div.news_img > img li > a > div.news_img > img
/news/cms/2026/04/15/news-p.v1.20260415.e272dd5789104f59a...12.2 KiB6.5 KiB
li.swiper-slide > a > div.photo_img > img li.swiper-slide > a > div.photo_img > img
/news/cms/2026/04/15/news-p.v1.20260415.e7309fb70c024e558...15.4 KiB6.2 KiB
메인 하단 배너3 - 리더스 클럽 ul > li > a > img#hbanner_63_85
wimg.heraldcorp.com/svc/banner/202411/ba0f5010-d01d-45f3-9eee-801bd1b2179c.jpg6.9 KiB5.0 KiB
20260326_제호-우리은행퇴직연금 ul > li > a > img#hbanner_77_948
wimg.heraldcorp.com/svc/banner/202603/ab5fd6ac-8413-4037-9664-d584e56ceff7.jpg7.0 KiB4.7 KiB
li > a > div.news_img > img li > a > div.news_img > img
/news/cms/2026/04/15/news-p.v1.20260415.a94609f028f448eea...5.7 KiB4.4 KiB
li > a > div.news_img > img li > a > div.news_img > img
/news/cms/2026/04/15/news-p.v1.20260415.a94609f028f448eea...5.7 KiB4.4 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:label label:Subpart valueType:text] map[key:duration label:Duration valueType:ms]]
items: [map[duration:1642.85 label:Time to first byte subpart:timeToFirstByte] map[duration:517.455 label:Resource load delay subpart:resourceLoadDelay] map[duration:4834.676 label:Resource load duration subpart:resourceLoadDuration] map[duration:51.919 label:Element render delay subpart:elementRenderDelay]]
lhId: page-4-IMG
nodeLabel: article.headline > div.headline_item > a.news_img > img
path: 1,HTML,1,BODY,1,MAIN,0,SECTION,0,ARTICLE,0,DIV,1,A,0,IMG
selector: article.headline > div.headline_item > a.news_img > img
snippet: <img src="https://wimg.heraldcorp.com/news/cms/2026/04/15/news-p.v1.20260415.8078189…" alt="">

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-4-IMG
nodeLabel: article.headline > div.headline_item > a.news_img > img
path: 1,HTML,1,BODY,1,MAIN,0,SECTION,0,ARTICLE,0,DIV,1,A,0,IMG
selector: article.headline > div.headline_item > a.news_img > img
snippet: <img src="https://wimg.heraldcorp.com/news/cms/2026/04/15/news-p.v1.20260415.8078189…" alt="">

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer SizeDuration
static.heraldcorp.com/wbazic/kh/www/css/common.css?pp=20260416081970.1 KiB644 ms
static.heraldcorp.com/js/lib/sscad.js?v=2026020514132.4 KiB
static.heraldcorp.com/js/lib/ajax.js?v=2026020514132.3 KiB
static.heraldcorp.com/js/lib/utils.kh.hrd.js?v=2026020514134.7 KiB322 ms
static.heraldcorp.com/wbazic/kh/www/css/reset.css?pp=2026041608193.5 KiB1.0 s
static.heraldcorp.com/js/lib/utils.js?v=20260205141311.6 KiB
t1.kakaocdn.net/kakao_js_sdk/v1/kakao.min.js34.5 KiB230 ms
/css2?family=Abhaya+Libre:wght@400;500;600;700;800&family...3.3 KiB321 ms
code.jquery.com/jquery-3.3.1.min.js29.9 KiB282 ms
cdn.jsdelivr.net/npm/swiper@11/swiper-bundle.min.js43.2 KiB162 ms
cdn.jsdelivr.net/npm/swiper@11/swiper-bundle.min.css5.1 KiB202 ms
/gh/orioncactus/pretendard@v1.3.9/dist/web/static/pretend...722 B

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: 975 ms
URLTime Spent
koreaherald.com/975 ms
www.koreaherald.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.

ElementLayout shift score
article.headline > div.headline_item > a.news_img > img article.headline > div.headline_item > a.news_img > img
0.123
More stories Asian scholars slam Trump interventionism in joint statement Sig… body > main.div_layout > section > article.base
0.003
Seoul locks in 273m barrels oil, 2.1m tons naphtha shielded from Hormuz risks div.headline_item > div.news_txt > a.txt_area > p.news_title
0.001
Log in Print edition body > header > div.header_area > ul.header_btn_list
0.000
Seoul locks in 273m barrels oil, 2.1m tons naphtha shielded from Hormuz risks div.headline_item > div.news_txt > a.txt_area > p.news_title
0.000
W3.5b is the new entry to Korea’s top 1% li > a > div.news_txt > p.news_title
0.000
li.menu > button.btn_all_menu > em.bar_wrap > span.all_menu_bar2 li.menu > button.btn_all_menu > em.bar_wrap > span.all_menu_bar2
0.000
Seoul locks in 273m barrels oil, 2.1m tons naphtha shielded from Hormuz risks div.headline_item > div.news_txt > a.txt_area > p.news_title
0.000
Sports div.nav_area > ul.gnb > li > a
0.000

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

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: 40 ms 13.9 KiB
URLTransfer SizeEst Savings
static.heraldcorp.com/wbazic/kh/www/css/common.css?pp=20260416081970.1 KiB13.9 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: 140 ms 78.1 KiB
URLTransfer SizeEst Savings
static.heraldcorp.com/wbazic/kh/www/css/common.css?pp=20260416081969.7 KiB64.0 KiB
/*! * CleanSlate * github.com/premasagar/cleanslate * */.cleanslate,.cleanslate a,.cleanslate abbr…16.2 KiB14.0 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: 80 ms 286.0 KiB
URLTransfer SizeEst Savings
www.googletagmanager.com/gtag/js?id=UA-127230343-1116.3 KiB64.2 KiB
www.googletagmanager.com/gtag/js?id=G-S0CBW8XMP5153.7 KiB63.3 KiB
www.googletagmanager.com/gtag/js?id=G-K4JZJD1VS2157.6 KiB62.6 KiB
climateclock.world/widget-v2.js160.2 KiB48.7 KiB
cdn.jsdelivr.net/npm/swiper@11/swiper-bundle.min.js43.0 KiB24.0 KiB
developers.kakao.com/sdk/js/kakao.min.js34.1 KiB23.2 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 7.9 KiB
URLTransfer SizeEst Savings
static.heraldcorp.com/js/lib/utils.js?v=20260205141311.2 KiB3.9 KiB
static.heraldcorp.com/js/lib/utils.js?v=20260205141311.2 KiB3.9 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
/news/cms/2026/04/06/news-p.v1.20260406.c5c03b105fda4e05a...2.9 MiB
/news/cms/2026/04/12/news-p.v1.20260412.0a6d87e896864f909...2.2 MiB
/svc/desking/1003/index/202604/X20250829165731_226_202604...1.3 MiB
/news/cms/2026/04/14/news-p.v1.20260414.a79f341968d3408cb...1.3 MiB
/news/cms/2026/04/15/news-p.v1.20260415.80781896360a49fea...972.2 KiB
wimg.heraldcorp.com/svc/series/202601/583ceb39-4692-4f5d-be5a-69bbb42daab0.png848.2 KiB
/gh/orioncactus/pretendard@v1.3.9/packages/pretendard/dis...767.8 KiB
/gh/orioncactus/pretendard@v1.3.9/packages/pretendard/dis...760.6 KiB
/gh/orioncactus/pretendard@v1.3.9/packages/pretendard/dis...748.3 KiB
/svc/desking/1003/index/202604/X20250829165800_226_202604...638.4 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
cooking ul > li > a > img#hbanner_120_195
wimg.heraldcorp.com/svc/banner/202501/9f74a8be-cfa2-487f-8ba2-7e4a37a70141.png
section > article.gallerybanner > a > img section > article.gallerybanner > a > img
static.heraldcorp.com/wbazic/kh/www/image/kh_event_bnn_770x100_260330.jpg
PC구독배너 ul > li > a > img#hbanner_125_181
wimg.heraldcorp.com/svc/banner/202501/9232a43a-4d9c-4e6a-a239-44304cff78a5.jpg
PC 메인 배너1 ul > li > a > img#hbanner_100_137
wimg.heraldcorp.com/svc/banner/202412/33637421-f556-4c41-bea3-0e7d9d26f580.jpg
20260325_신한카드 ul > li > a > img#hbanner_101_945
wimg.heraldcorp.com/svc/banner/202603/af9fab3a-a955-4ba4-98ba-3f966126cd96.jpg
20260402_KB증권 ul > li > a > img#hbanner_102_973
wimg.heraldcorp.com/svc/banner/202604/9a17034f-c6b5-41db-b06d-4627d32fc3e7.jpg
20260326_제호-우리은행퇴직연금 ul > li > a > img#hbanner_77_948
wimg.heraldcorp.com/svc/banner/202603/ab5fd6ac-8413-4037-9664-d584e56ceff7.jpg
메인 하단 배너1 ul > li > a > img#hbanner_61_83
wimg.heraldcorp.com/svc/banner/202411/b2b9a3bc-21f7-4619-a67d-2c0c490be8ea.jpg
메인 하단 배너2 ul > li > a > img#hbanner_62_84
wimg.heraldcorp.com/svc/banner/202411/7dd8e3e2-7682-4320-90e6-d1018419676b.jpg
메인 하단 배너3 - 리더스 클럽 ul > li > a > img#hbanner_63_85
wimg.heraldcorp.com/svc/banner/202411/ba0f5010-d01d-45f3-9eee-801bd1b2179c.jpg
리얼푸드 ul.div_layout > li.div_item > strong.section_title > img
static.heraldcorp.com/wbazic/kh/www/image/img_other_logo_realfoods.png
헤럴드경제 ul.div_layout > li.div_item > strong.section_title > img
static.heraldcorp.com/wbazic/kh/www/image/img_other_logo_hk.png

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

●Optimize DOM size
●Font display
●Modern HTTP
●Optimize viewport for mobile
●Max Potential First Input Delay 40 ms
●User Timing marks and measures 10 user timings
●JavaScript execution time 0.3 s
●Minimizes main-thread work 1.3 s
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 290 ms
●Server Backend Latencies 410 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 310 ms
○INP breakdown
○Avoid long main-thread tasks
○Avoid non-composited animations
71

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.

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.search_wrap > div.search_bar > form > button.btn_search div.search_wrap > div.search_bar > form > button.btn_search
div.header_area > ul.header_btn_list > li.menu > button.btn_all_menu div.header_area > ul.header_btn_list > li.menu > button.btn_all_menu

Labels ensure that form controls are announced properly by assistive technologies, like screen readers. Learn more about form element labels.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.search_wrap > div.search_bar > form > input#q div.search_wrap > div.search_bar > form > input#q

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
aside > article.podcast > div.podcast_area > iframe aside > article.podcast > div.podcast_area > iframe
article.watch_listen > article.listen > div.listen_area > iframe article.watch_listen > article.listen > div.listen_area > iframe

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
section > article.headline > div.headline_item > a.news_img section > article.headline > div.headline_item > a.news_img
main.div_layout > section > article.gallerybanner > a main.div_layout > section > article.gallerybanner > a
div.graphic_swiper > ul#swiper-wrapper-29a98a6d840352a3 > li.swiper-slide > a.graphic_news_link div.graphic_swiper > ul#swiper-wrapper-29a98a6d840352a3 > li.swiper-slide > a.graphic_news_link
div.graphic_swiper > ul#swiper-wrapper-29a98a6d840352a3 > li.swiper-slide > a.graphic_news_link div.graphic_swiper > ul#swiper-wrapper-29a98a6d840352a3 > li.swiper-slide > a.graphic_news_link
div.graphic_swiper > ul#swiper-wrapper-29a98a6d840352a3 > li.swiper-slide > a.graphic_news_link div.graphic_swiper > ul#swiper-wrapper-29a98a6d840352a3 > li.swiper-slide > a.graphic_news_link
div.graphic_swiper > ul#swiper-wrapper-29a98a6d840352a3 > li.swiper-slide > a.graphic_news_link div.graphic_swiper > ul#swiper-wrapper-29a98a6d840352a3 > li.swiper-slide > a.graphic_news_link
div.graphic_swiper > ul#swiper-wrapper-29a98a6d840352a3 > li.swiper-slide > a.graphic_news_link div.graphic_swiper > ul#swiper-wrapper-29a98a6d840352a3 > li.swiper-slide > a.graphic_news_link
div.gallery > ul.gallery_down_li > li > a.gallery_down_li_btn div.gallery > ul.gallery_down_li > li > a.gallery_down_li_btn
article.watch > ul.watch_list > li > a article.watch > ul.watch_list > li > a
article.watch > ul.watch_list > li > a article.watch > ul.watch_list > li > a
article.watch > ul.watch_list > li > a article.watch > ul.watch_list > li > a
article.watch > ul.watch_list > li > a article.watch > ul.watch_list > li > 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
Print edition div.header_area > ul.header_btn_list > li.subscribe > a.btn_subscribe
For our subscribers div.nav_area > ul.nav_btn_list > li > a.btn_subscribers
English Cafe div.nav_area > ul.nav_btn_list > li > a.btn_english_cafe

These are opportunities to improve the legibility of your content.

Tables and lists

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
5 / 5 article.graphic_news > div.graphic_swiper_wrap > div.graphic_swiper > ul#swiper-wrapper-29a98a6d840352a3
KOSDAQ 1,152 30.55 USD/KRW1,481.4 EUR/KRW1,747.46 CNH/KRW217.55 JPY(100)/KRW932… article.factor > a.stock_data > div.swiper > ul#swiper-wrapper-a6b105d5ec8dfa7d9
Seoul City offers rabies vaccinations for pets for 10,000 won T-shirt weather:… article.today_photo > div.today_photo_swiper_wrap > div.today_photo_swiper > ul#swiper-wrapper-29320914b4ec497c
1 US YouTuber Johnny Somali gets jail time in Korea over deepfake, public stu… aside > article.most_popular > div.most_popular_swiper > ul#swiper-wrapper-aa9d4e06dc80d744

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

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
●Image elements have `[alt]` attributes
●`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
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●Links are distinguishable without relying on color.
●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
●No element has a `[tabindex]` value greater than 0
●Touch targets have sufficient size and spacing.
●Document has a main landmark.
●Deprecated ARIA roles were not used
●Uses ARIA roles only on compatible elements
●Image elements do not have `[alt]` attributes that are redundant text.
●Identical links have the same purpose.
○`[accesskey]` values are unique
○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.
○`[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
○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
○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
○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.
○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.
96

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.

SourceDescription
code.jquery.com/jquery-3.3.1.min.js line 1, col 31039
Uncaught TypeError: Cannot read properties of undefined (reading 'top')
code.jquery.com/jquery-3.3.1.min.js line 1, col 31039
Uncaught TypeError: Cannot read properties of undefined (reading 'top')
●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
●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 clickjacking with XFO or CSP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
●Page has valid source maps
○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

Descriptive link text helps search engines understand your content. Learn how to make links more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Link destinationLink Text
www.koreaherald.com/series/338more
www.koreaherald.com/Opinionmore
www.koreaherald.com/Nationalmore
www.koreaherald.com/Businessmore
www.koreaherald.com/LifenCulturemore
www.koreaherald.com/Kpopmore
www.koreaherald.com/seriesmore
www.koreaherald.com/Photomore
www.koreaherald.com/seriesmore
www.koreaherald.com/Podcastmore
biz.heraldcorp.com/more
www.realfoods.co.kr/more

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 are crawlable
●robots.txt is valid
●Image elements have `[alt]` attributes
●Document has a valid `hreflang`
●Document has a valid `rel=canonical`

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