zdnet.co.kr SEO report

IT세상을 바꾸는 힘 지디넷코리아

Visit website
55/ 100

OVERALL SEO SCORE

Review your next improvements

Checks are based on public HTML and responses. Review the evidence and recommended actions below.

Passed17
Needs review13
Not checked1
Analyzed Checks 31

The score excludes checks that could not be completed.

Screenshot

PagePeeker
zdnet.co.kr
zdnet.co.kr Screenshot

NEXT STEPS

Recommended next steps

Up to four findings, ordered by check weight.

Detailed findings

Review the observed values, context and actions for each check.

02

Content and images

5 checks

Headings

Needs review
H1 0 / H2 2 / H3 22

Headings organize a page into a main topic and supporting sections. This tool checks for one H1 and shows the saved H2-H6 structure.

Recommended action

Use H1 for the main subject and H2/H3 for logical subsections, rather than selecting levels for visual size alone.

Targets and suggested changes

Targethttps://zdnet.co.kr/

Body h1 elements

If multiple H1s are shown, choose the main topic and use suitable subsection levels for the others. If absent, add the main heading near the start of content.

View evidence and example changes
Observed content
0
Example - adapt to the actual content and environment
<h1>Main topic of this page</h1>

Image alt

Needs review
68 images; 5 with non-empty alt; 63 empty or missing

Alternative text conveys an image’s meaning. The count includes images with non-empty alt text.

Recommended action

Describe informative images in context. Empty alt="" can be appropriate for decorative images, so inspect their purpose before changing them.

Targets and suggested changes

Targethttps://zdnet.co.kr/images/zdnet_logo.png?ver=20220830

HTML response line 179 · /html/body/header/nav/div[1]/a/div/img

Find the img tag using this URL. Describe informative content, or explicitly use empty alt for a decorative image. The text below is a placeholder; preserve existing classes, dimensions and other attributes.

View evidence and example changes
Observed content
<img src="/images/zdnet_logo.png?ver=20220830" alt="" style="">
Example - adapt to the actual content and environment
<img src="https://zdnet.co.kr/images/zdnet_logo.png?ver=20220830" alt="Describe the actual image content">

For a decorative image:
<img src="https://zdnet.co.kr/images/zdnet_logo.png?ver=20220830" alt="">

Targethttps://image.zdnet.co.kr/2023/08/20/80227a0594217cc0951ead7c2413330b.jpg

HTML response line 342 · /html/body/div[3]/div/div/ul/li[1]/div/div[1]/div[1]/figure/span/img

Find the img tag using this URL. Describe informative content, or explicitly use empty alt for a decorative image. The text below is a placeholder; preserve existing classes, dimensions and other attributes.

View evidence and example changes
Observed content
<img src="https://image.zdnet.co.kr/2023/08/20/80227a0594217cc0951ead7c2413330b.jpg" alt="">
Example - adapt to the actual content and environment
<img src="https://image.zdnet.co.kr/2023/08/20/80227a0594217cc0951ead7c2413330b.jpg" alt="Describe the actual image content">

For a decorative image:
<img src="https://image.zdnet.co.kr/2023/08/20/80227a0594217cc0951ead7c2413330b.jpg" alt="">

Targethttps://image.zdnet.co.kr/2026/10/25/6da4cc7a9372edf6ea2552de5eb74c57.png

HTML response line 365 · /html/body/div[3]/div/div/ul/li[1]/div/div[2]/div[1]/figure/span/img

Find the img tag using this URL. Describe informative content, or explicitly use empty alt for a decorative image. The text below is a placeholder; preserve existing classes, dimensions and other attributes.

View evidence and example changes
Observed content
<img src="https://image.zdnet.co.kr/2026/10/25/6da4cc7a9372edf6ea2552de5eb74c57.png" class="" alt="">
Example - adapt to the actual content and environment
<img src="https://image.zdnet.co.kr/2026/10/25/6da4cc7a9372edf6ea2552de5eb74c57.png" alt="Describe the actual image content">

For a decorative image:
<img src="https://image.zdnet.co.kr/2026/10/25/6da4cc7a9372edf6ea2552de5eb74c57.png" alt="">

Targethttps://image.zdnet.co.kr/2026/10/23/e8a57c0c5989dab2c8a482a97292f1ec.png

HTML response line 382 · /html/body/div[3]/div/div/ul/li[1]/div/div[3]/div[1]/figure/span/img

Find the img tag using this URL. Describe informative content, or explicitly use empty alt for a decorative image. The text below is a placeholder; preserve existing classes, dimensions and other attributes.

View evidence and example changes
Observed content
<img src="https://image.zdnet.co.kr/2026/10/23/e8a57c0c5989dab2c8a482a97292f1ec.png" class="" alt="">
Example - adapt to the actual content and environment
<img src="https://image.zdnet.co.kr/2026/10/23/e8a57c0c5989dab2c8a482a97292f1ec.png" alt="Describe the actual image content">

For a decorative image:
<img src="https://image.zdnet.co.kr/2026/10/23/e8a57c0c5989dab2c8a482a97292f1ec.png" alt="">

Targethttps://image.zdnet.co.kr/2026/10/25/e78c3eb8689a4dcc8a792196fac3c79a.jpg

HTML response line 407 · /html/body/div[3]/div/div/ul/li[2]/div/div[1]/div[1]/figure/span/img

Find the img tag using this URL. Describe informative content, or explicitly use empty alt for a decorative image. The text below is a placeholder; preserve existing classes, dimensions and other attributes.

View evidence and example changes
Observed content
<img src="https://image.zdnet.co.kr/2026/10/25/e78c3eb8689a4dcc8a792196fac3c79a.jpg" class="" alt="">
Example - adapt to the actual content and environment
<img src="https://image.zdnet.co.kr/2026/10/25/e78c3eb8689a4dcc8a792196fac3c79a.jpg" alt="Describe the actual image content">

For a decorative image:
<img src="https://image.zdnet.co.kr/2026/10/25/e78c3eb8689a4dcc8a792196fac3c79a.jpg" alt="">

63 targets; the first five are shown. Review the full saved list in the details below.

Language

Passed
ko

The html lang attribute identifies the document’s primary language and helps assistive software select pronunciation.

Keep in mind

Match lang to the main content and mark passages written in another language as appropriate.

Charset

Passed
UTF-8

The encoding declaration tells clients how to decode text. It must match the actual response bytes.

Keep in mind

Keep the HTTP or HTML charset declaration consistent with the file encoding; use UTF-8 for UTF-8 content.

Text/HTML ratio

Needs review
7.67%

Tool reference range 15-70%; not an official ranking threshold.

This compares visible text length with HTML length. It cannot determine content quality or rankings on its own.

Recommended action

Do not add filler text to target a ratio. Check for useful HTML content and unnecessary markup.

Targets and suggested changes

Targethttps://zdnet.co.kr/

main / body

Check whether main content exists in the initial HTML. Consider server rendering for missing core text; do not add filler to target a ratio.

View evidence and example changes
Observed content
7.67%

Heading structure

Saved headings, up to 50 per level. Expand the H2-H6 lists when needed.

H10
H22
H322
H448
H50
H60
H1

No H1 heading was found.

H2 2View headings
  1. 이 시각 주요뉴스2026년 10월 25일 일요일
  2. 지금 뜨는 기사
H3 22View headings
  1. [ZD브리핑] 최대 실적 SK하이닉스‧삼성전자…주가 견인할까
  2. 오픈AI '닷츠' vs 앤트로픽 '듀엣'…내 일 맡길 AI 비서는?
  3. 표정 보고 기분 맞춰 대화…'감정 읽는 AI' 만든다
  4. SKT는 왜 토큰 게이트웨이로 눈길 돌렸나
  5. [글로벌 줍줍] 내구성 비상 '아이폰 듀오'…스타링크, 美 통신사 겨누다
  6. 30년간 10조 번 '햇반'..."2년 후 연매출 1.5조 목표"
  7. 그라비티 '라그나로크 온라인 PLUS+' 첫 발걸음…공식 가이드·아카이브 핵심 총정리
  8. 구수한 맛에 꽂혔다...프랜차이즈, 올가을 '호지차' 주목
  9. 깃허브가 제시한 AI·사람 개발 협업 생태계는?
  10. ‘승리의 여신: 니케’ 4주년 특별 방송, "방주 이야기 매듭…최종전 이후 준비"
  11. "GPT-6보다 코딩 잘한다"…중국 문샷AI, '키미 K3.1 프로' 출시
  12. 한국화한 핼러윈, 좀비부터 K-호러까지 가을밤 축제
  13. 이슈진단++ 더보기
  14. 포토•영상+ 더보기
  15. 칼럼•연재+ 더보기
  16. 뉴스앤게임
  17. 오늘의 인터뷰+ 더보기
  18. 잇사이트(IT'sight) 콘텐츠+ 더보기
  19. English News
  20. 인사·부음
  21. 공지사항
  22. ZDNet Power Center
H4 48View headings
  1. 중동 긴장 고조에 비트코인 약세…이번주 FOMC 주목
  2. 위험성 알려줘도 공격 지속…영국 AI보안연구소가 밝힌 AI 안전 허점
  3. 삼성전자, 인도 스마트폰 시장서 9분기 만에 1위 탈환
  4. 삼성, 하반기 GSAT 실시…4대 그룹 중 유일하게 공채 유지
  5. 프랑스 부채 위기, 유로존 전역으로 퍼질까
  6. 술 대신 ‘대마 음료’ 찾는 미국…주류업계, 규제 놓고 갈등
  7. 인간 언어는 행복보다 안전을 선호한다?
  8. "AI 투자 불안은 기회"…래블업, 공모가 하단 딛고 성장성 입증 나선다
  9. AI 모델 연결 도구 라이트LLM 해킹…비밀번호 빼내는 악성 코드 배포
  10. 가상공간서 땅 파며 학습…HD현대, 무인 굴착기 개발 속도
  11. 분당서 열린 열돌 맞은 KT 보야지 페스티벌
  12. "20번도 안 열었는데 쩍"…아이폰 듀오, 힌지 따라 화면 균열
  13. [글로벌 줍줍] 내구성 비상 '아이폰 듀오'…스타링크, 美 통신사 겨누다
  14. [안광섭 AI 진테제] 대규모 LLM이 불평등 증폭?
  15. [기경학회 기후에너지 칼럼] 1000조 투입 K-GX, 탄소중립 감축 어떻게 확인할까
  16. [디엘지 law 인사이트] 임금체불 진정 사건 처리절차
  17. [보안 리딩기업] 프라이빗AI "제로트러스트 시장 선도"
  18. [AI 리더스] 피그마 "韓 기업, AI 코드·제품 완성 연결 필요…협업 도울 것"
  19. [보안 리딩기업] 프라이빗AI "제로트러스트 시장 선도"
  20. 일본 GMO, FX 자동매매 서버 해킹…모든 이용자에 5000엔 위로금
  21. 中 체리차, 캐나다 공장 설립 검토…"美 빼도 가치 충분"
  22. 삼성, CEO 승계후보군 이사회 정례보고 계열사 확대...삼성전기·SDI 도입
  23. SLL, JTBC ‘파이널 테이블’ 온라인 팬 소통 확대
  24. 현대홈쇼핑, DJI '오즈모 포켓 3' 판매
  25. 하정우 부위원장, 뉴립스 이어 ICML 심사도 맡는다
  26. 풀무원, 구조 동물 위해 사료·간식 2톤 기부
  27. 롯데백화점, 롤 팝업스토어 연다…'페이커' 기념우표도 판매
  28. 롯데홈쇼핑 '광클절' 주문 120만건…3040 고객 참여 늘었다
  29. "웃고 울먹이기까지"…트위터 창업자 잭 도시, 사람 닮은 음성 AI 공개
  30. LG전자, 獨 쉴링에 세탁가전 공급…유럽 B2B 공략 속도
  31. 안랩, 일본 법인장 새로 선임...'2026 시큐리티 데이즈 폴' 참가
  32. "내 사진 체질은?" 캐논, 서촌에 '사진 한방당' 열었다
  33. 남미 넘어 아프리카로…중국 전기차, 신흥시장 공략 가속
  34. LGU+, 9900원 독서·일상 멤버십 결합 구독 상품 출시
  35. 말레이 "구글 지도앱 웨이즈, 공직자 사용 금지 유지"
  36. 오라클 AI 월드 2026, 25일 개막…AI 사업 성과 입증 나선다
  37. 통신망으로 드론 위협 줄인다...기지국으로 감시
  38. EU, 370억원 투입 6G 연구사업 5개 선정
  39. 마이크로칩 "헤일로 AI 가속기와 결합한 턴키 솔루션으로 승부"
  40. '중국판 엔비디아' 캠브리콘, 매출 급등…"국산화 노력 수혜"
  41. 가을비도 삼켜버린 5000명의 열기…다시 달린 이봉주, 함께 뛴 공직사회
  42. LCK 4전 전승 속 2R 내전 성사…LPL은 1패조 벼랑 끝 승부
  43. 100년 만에 또 찾은 바이킹 희귀 은화…"노르웨이 왕 핵심유품"
  44. SFC "삼성D에 맥북 OLED용 청색호스트 공급...청색도판트 놓쳐"
  45. 기업 폰트 관리 '골칫거리'…응답자 62%가 문제 지적
  46. 개보위, 대구 '개인정보 이노베이션 존' 본격 운영
  47. 대한항공·아시아나, 개인정보 유출 확인…IT 협력사가 '구멍'
  48. 사가와큐빈, 부정 액세스로 최대 5323만건 개인정보 유출 가능성
Images and alternative text68 saved

Up to 100 images are saved. Review an image’s purpose when its alt text is empty.

URLImage alt
https://zdnet.co.kr/images/zdnet_logo.png?ver=20220830Empty or missing
https://zdnet.co.kr/images/ZDPick_p.pngZDPick
https://image.zdnet.co.kr/2023/08/20/80227a0594217cc0951ead7c2413330b.jpgEmpty or missing
https://image.zdnet.co.kr/2026/10/25/6da4cc7a9372edf6ea2552de5eb74c57.pngEmpty or missing
https://image.zdnet.co.kr/2026/10/23/e8a57c0c5989dab2c8a482a97292f1ec.pngEmpty or missing
https://image.zdnet.co.kr/2026/10/25/e78c3eb8689a4dcc8a792196fac3c79a.jpgEmpty or missing
https://image.zdnet.co.kr/2026/10/17/102b93debb31ee8652d47439a36856fc.pngEmpty or missing
https://image.zdnet.co.kr/2026/10/22/5434699c05be1c365e489ed7ec82b665.jpgEmpty or missing
https://image.zdnet.co.kr/2026/10/22/c1ef95811292a63ca7db35fdb2fe709f.pngEmpty or missing
https://image.zdnet.co.kr/2026/10/25/83f97e06515b0ed3c61c64b8f431d6cc.jpgEmpty or missing
https://image.zdnet.co.kr/2026/10/25/f3f125d86a894d5f39585932f8c39e2f.pngEmpty or missing
https://image.zdnet.co.kr/2026/10/24/58851733d7c2f49f655fa9962813bef3.pngEmpty or missing
https://image.zdnet.co.kr/2026/10/24/c394b1ddc523803c9ef976db1aa8eecb.pngEmpty or missing
https://image.zdnet.co.kr/2026/10/23/553ecb9a44921344e18db328d8474718.jpgEmpty or missing
https://zdnet.co.kr/images/300_90_physicalAI.jpgEmpty or missing
https://zdnet.co.kr/images/default.png?ver=20220902Empty or missing
https://zdnet.co.kr/images/default.png?ver=20220902Empty or missing
https://zdnet.co.kr/images/default.png?ver=20220902Empty or missing
https://zdnet.co.kr/images/default.png?ver=20220902Empty or missing
https://zdnet.co.kr/images/default.png?ver=20220902Empty or missing
https://zdnet.co.kr/images/default.png?ver=20220902Empty or missing
https://zdnet.co.kr/images/default.png?ver=20220902Empty or missing
https://image.zdnet.co.kr/2026/10/19/a20fa02c1b5f6766ffdadbd4a1e381ed-300x300.jpgEmpty or missing
https://zdnet.co.kr/images/more_icon.pngEmpty or missing
https://zdnet.co.kr/images/speaker_icon.pngEmpty or missing
https://image.zdnet.co.kr/2026/10/22/aia5d746fbd999a588436f4f8b3204d9e7-300x300.jpgEmpty or missing
https://image.zdnet.co.kr/2026/10/25/03ebeee73244c78c7a0b0266f9351eb9.jpg가상공간서 땅 파며 학습…HD현대, 무인 굴착기 개발 속도
https://image.zdnet.co.kr/2026/10/25/03f0b73366957fcf4d4d8cab2d8d61cc.jpg분당서 열린 열돌 맞은 KT 보야지 페스티벌
https://image.zdnet.co.kr/2026/10/24/f3c5b0eca6d0cdde63daf09178dc9494.png"20번도 안 열었는데 쩍"…아이폰 듀오, 힌지 따라 화면 균열
https://zdnet.co.kr/Include2/user/pic/reporter/paikshow1@zdnet.co.kr.jpgEmpty or missing
https://image.zdnet.co.kr/2026/03/14/f00e490ce89f2d91fe9ab28013ce9cf9-300x300.jpgEmpty or missing
https://image.zdnet.co.kr/2026/10/24/7ab7bcc558cc7e7520a31cac62521d2f-300x300.pngEmpty or missing
https://image.zdnet.co.kr/2025/05/10/d8985c64a01b5424d05da8b685f8c1ad-300x300.jpgEmpty or missing
https://image.zdnet.co.kr/2026/10/25/d7f9b3a46ccfbe885a3854c2c51f5ae4.jpgEmpty or missing
https://image.zdnet.co.kr/2026/10/23/909a2bc09503bbd1d4f1fad78b6c4272.jpgEmpty or missing
https://zdnet.co.kr/images/default.png?ver=20220902Empty or missing
https://zdnet.co.kr/images/default.png?ver=20220902Empty or missing
https://zdnet.co.kr/images/default.png?ver=20220902Empty or missing
https://zdnet.co.kr/images/default.png?ver=20220902Empty or missing
https://zdnet.co.kr/images/default.png?ver=20220902Empty or missing
https://zdnet.co.kr/images/default.png?ver=20220902Empty or missing
https://zdnet.co.kr/images/default.png?ver=20220902Empty or missing
https://zdnet.co.kr/images/default.png?ver=20220902Empty or missing
https://zdnet.co.kr/images/default.png?ver=20220902Empty or missing
https://zdnet.co.kr/images/default.png?ver=20220902Empty or missing
https://zdnet.co.kr/images/default.png?ver=20220902Empty or missing
https://zdnet.co.kr/images/default.png?ver=20220902Empty or missing
https://zdnet.co.kr/images/default.png?ver=20220902Empty or missing
https://zdnet.co.kr/images/default.png?ver=20220902Empty or missing
https://zdnet.co.kr/images/default.png?ver=20220902Empty or missing
https://zdnet.co.kr/images/default.png?ver=20220902Empty or missing
https://zdnet.co.kr/images/default.png?ver=20220902Empty or missing
https://zdnet.co.kr/images/default.png?ver=20220902Empty or missing
https://zdnet.co.kr/images/default.png?ver=20220902Empty or missing
https://zdnet.co.kr/images/default.png?ver=20220902Empty or missing
https://zdnet.co.kr/images/default.png?ver=20220902Empty or missing
https://zdnet.co.kr/images/default.png?ver=20220902Empty or missing
https://zdnet.co.kr/images/default.png?ver=20220902Empty or missing
https://zdnet.co.kr/images/default.png?ver=20220902Empty or missing
https://zdnet.co.kr/images/default.png?ver=20220902Empty or missing
https://zdnet.co.kr/images/default.png?ver=20220902Empty or missing
https://zdnet.co.kr/images/default.png?ver=20220902Empty or missing
https://zdnet.co.kr/images/default.png?ver=20220902Empty or missing
https://zdnet.co.kr/images/default.png?ver=20220902Empty or missing
https://zdnet.co.kr/images/default.png?ver=20220902Empty or missing
https://zdnet.co.kr/images/power_center_320x50.jpgEmpty or missing
https://zdnet.co.kr/images/top_button.pngTOP
https://zdnet.co.kr/images/footer_logo2.png?ver=20220830Empty or missing
KeywordsFrequency and metadata

Word occurrence counts from extracted content, not search demand or keyword rankings.

ai28 글로벌15 기자13 zdnet8 인공지능8 더보기8 중국7 출시7 23일7 25일6 기업6 일본6 korea5 게임5 최대5 따르면5 구독5 지난5 인사4 zd브리핑4

Meta keywords · Not found

Meta keywords do not contribute to this tool’s score.

04

Mobile experience

5 checks

Viewport

Needs review
The expected configuration was not detected.

Viewport metadata enables device-width layouts. It is not a test of real mobile layout or touch targets.

Recommended action

Check width=device-width, then inspect overflow, zoom, forms and buttons on a small screen.

Targets and suggested changes

Targethttps://zdnet.co.kr/

Response HTML <head>

Update the existing viewport tag instead of duplicating it, then check the mobile layout.

View evidence and example changes
Example - adapt to the actual content and environment
<meta name="viewport" content="width=device-width, initial-scale=1">

Favicon

Passed
The current check passed.

This detects a link declaration for a browser icon, rather than verifying its rendered appearance.

Keep in mind

Check that the icon file loads and remains recognizable on light and dark browser surfaces.

Apple touch icon

Needs review
The expected configuration was not detected.

This detects a touch icon declaration for saved home-screen shortcuts.

Recommended action

Review the icon’s dimensions, padding and background, then inspect it on an actual device.

Targets and suggested changes

Targethttps://zdnet.co.kr/

Response HTML <head>

Prepare a home-screen icon and declare its real path rather than adding a tag without a file.

View evidence and example changes
Example - adapt to the actual content and environment
<link rel="apple-touch-icon" href="/apple-touch-icon.png">

Modern images

Needs review
0/68

This detects WebP/AVIF from img src/srcset extensions and picture source types. Images whose format cannot be inferred from HTML, such as extensionless CDN URLs, may not be reflected in the count.

Recommended action

Compare quality and file size, and inspect the actual delivered format in browser developer tools.

Targets and suggested changes

Targethttps://zdnet.co.kr/images/zdnet_logo.png?ver=20220830

HTML response line 179 · /html/body/header/nav/div[1]/a/div/img

Convert this file to WebP/AVIF and use the actual converted URL. Do not merely rename its extension. Keep it if the CDN already serves a modern format.

View evidence and example changes
Observed content
<img src="/images/zdnet_logo.png?ver=20220830" alt="" style="">
Example - adapt to the actual content and environment
<picture>
  <source srcset="[converted-image.webp]" type="image/webp">
  <img src="https://zdnet.co.kr/images/zdnet_logo.png?ver=20220830" alt="">
</picture>

Targethttps://zdnet.co.kr/images/ZDPick_p.png

HTML response line 285 · /html/body/header/nav/div[2]/div[2]/div[2]/div/span/a/img

Convert this file to WebP/AVIF and use the actual converted URL. Do not merely rename its extension. Keep it if the CDN already serves a modern format.

View evidence and example changes
Observed content
<img src="https://zdnet.co.kr/images/ZDPick_p.png" alt="ZDPick" class="PrimaryMenu_img">
Example - adapt to the actual content and environment
<picture>
  <source srcset="[converted-image.webp]" type="image/webp">
  <img src="https://zdnet.co.kr/images/ZDPick_p.png" alt="ZDPick">
</picture>

Targethttps://image.zdnet.co.kr/2023/08/20/80227a0594217cc0951ead7c2413330b.jpg

HTML response line 342 · /html/body/div[3]/div/div/ul/li[1]/div/div[1]/div[1]/figure/span/img

Convert this file to WebP/AVIF and use the actual converted URL. Do not merely rename its extension. Keep it if the CDN already serves a modern format.

View evidence and example changes
Observed content
<img src="https://image.zdnet.co.kr/2023/08/20/80227a0594217cc0951ead7c2413330b.jpg" alt="">
Example - adapt to the actual content and environment
<picture>
  <source srcset="[converted-image.webp]" type="image/webp">
  <img src="https://image.zdnet.co.kr/2023/08/20/80227a0594217cc0951ead7c2413330b.jpg" alt="">
</picture>

Targethttps://image.zdnet.co.kr/2026/10/25/6da4cc7a9372edf6ea2552de5eb74c57.png

HTML response line 365 · /html/body/div[3]/div/div/ul/li[1]/div/div[2]/div[1]/figure/span/img

Convert this file to WebP/AVIF and use the actual converted URL. Do not merely rename its extension. Keep it if the CDN already serves a modern format.

View evidence and example changes
Observed content
<img src="https://image.zdnet.co.kr/2026/10/25/6da4cc7a9372edf6ea2552de5eb74c57.png" class="" alt="">
Example - adapt to the actual content and environment
<picture>
  <source srcset="[converted-image.webp]" type="image/webp">
  <img src="https://image.zdnet.co.kr/2026/10/25/6da4cc7a9372edf6ea2552de5eb74c57.png" alt="">
</picture>

Targethttps://image.zdnet.co.kr/2026/10/23/e8a57c0c5989dab2c8a482a97292f1ec.png

HTML response line 382 · /html/body/div[3]/div/div/ul/li[1]/div/div[3]/div[1]/figure/span/img

Convert this file to WebP/AVIF and use the actual converted URL. Do not merely rename its extension. Keep it if the CDN already serves a modern format.

View evidence and example changes
Observed content
<img src="https://image.zdnet.co.kr/2026/10/23/e8a57c0c5989dab2c8a482a97292f1ec.png" class="" alt="">
Example - adapt to the actual content and environment
<picture>
  <source srcset="[converted-image.webp]" type="image/webp">
  <img src="https://image.zdnet.co.kr/2026/10/23/e8a57c0c5989dab2c8a482a97292f1ec.png" alt="">
</picture>

68 targets; the first five are shown. Review the full saved list in the details below.

Lazy loading

Needs review
0/68

This detects loading="lazy" on img elements. Pages with few images can pass the tool’s heuristic without it.

Recommended action

Consider lazy loading below-the-fold images while keeping prominent first-screen images promptly available.

Targets and suggested changes

Targethttps://zdnet.co.kr/images/zdnet_logo.png?ver=20220830

HTML response line 179 · /html/body/header/nav/div[1]/a/div/img

Add loading="lazy" only if this image is below the initial viewport. Keep prominent initial-viewport images eager.

View evidence and example changes
Observed content
<img src="/images/zdnet_logo.png?ver=20220830" alt="" style="">
Example - adapt to the actual content and environment
<img src="https://zdnet.co.kr/images/zdnet_logo.png?ver=20220830" alt="" loading="lazy">

Targethttps://zdnet.co.kr/images/ZDPick_p.png

HTML response line 285 · /html/body/header/nav/div[2]/div[2]/div[2]/div/span/a/img

Add loading="lazy" only if this image is below the initial viewport. Keep prominent initial-viewport images eager.

View evidence and example changes
Observed content
<img src="https://zdnet.co.kr/images/ZDPick_p.png" alt="ZDPick" class="PrimaryMenu_img">
Example - adapt to the actual content and environment
<img src="https://zdnet.co.kr/images/ZDPick_p.png" alt="ZDPick" loading="lazy">

Targethttps://image.zdnet.co.kr/2023/08/20/80227a0594217cc0951ead7c2413330b.jpg

HTML response line 342 · /html/body/div[3]/div/div/ul/li[1]/div/div[1]/div[1]/figure/span/img

Add loading="lazy" only if this image is below the initial viewport. Keep prominent initial-viewport images eager.

View evidence and example changes
Observed content
<img src="https://image.zdnet.co.kr/2023/08/20/80227a0594217cc0951ead7c2413330b.jpg" alt="">
Example - adapt to the actual content and environment
<img src="https://image.zdnet.co.kr/2023/08/20/80227a0594217cc0951ead7c2413330b.jpg" alt="" loading="lazy">

Targethttps://image.zdnet.co.kr/2026/10/25/6da4cc7a9372edf6ea2552de5eb74c57.png

HTML response line 365 · /html/body/div[3]/div/div/ul/li[1]/div/div[2]/div[1]/figure/span/img

Add loading="lazy" only if this image is below the initial viewport. Keep prominent initial-viewport images eager.

View evidence and example changes
Observed content
<img src="https://image.zdnet.co.kr/2026/10/25/6da4cc7a9372edf6ea2552de5eb74c57.png" class="" alt="">
Example - adapt to the actual content and environment
<img src="https://image.zdnet.co.kr/2026/10/25/6da4cc7a9372edf6ea2552de5eb74c57.png" alt="" loading="lazy">

Targethttps://image.zdnet.co.kr/2026/10/23/e8a57c0c5989dab2c8a482a97292f1ec.png

HTML response line 382 · /html/body/div[3]/div/div/ul/li[1]/div/div[3]/div[1]/figure/span/img

Add loading="lazy" only if this image is below the initial viewport. Keep prominent initial-viewport images eager.

View evidence and example changes
Observed content
<img src="https://image.zdnet.co.kr/2026/10/23/e8a57c0c5989dab2c8a482a97292f1ec.png" class="" alt="">
Example - adapt to the actual content and environment
<img src="https://image.zdnet.co.kr/2026/10/23/e8a57c0c5989dab2c8a482a97292f1ec.png" alt="" loading="lazy">

68 targets; the first five are shown. Review the full saved list in the details below.

05

Technical checks

8 checks

Doctype

Passed
html

The doctype declaration helps browsers render HTML in standards mode.

Keep in mind

Place <!doctype html> at the start of the document and check for unintended output before it.

CSS files

Passed
3

Tool heuristic: up to 4 external files

This counts external stylesheet declarations. Count alone does not measure transfer size, caching or render blocking.

Keep in mind

Inspect duplicate or unused CSS and render blocking, then prioritize changes using actual performance measurements.

JavaScript files

Needs review
7

Tool heuristic: up to 6 external files

This counts script elements with src attributes. File count alone cannot measure execution cost or responsiveness.

Recommended action

Review duplicated scripts and expensive startup work; consider defer, async or delayed execution where appropriate.

Targets and suggested changes

Targethttps://www.googletagmanager.com/gtag/js?id=UA-26701480-12

HTML response line 100 · /html/head/script[4]

This file is referenced by the page. Find duplicate tags and remove or conditionally load files that are unused here. File count alone does not establish a defect in this file.

View evidence and example changes
Observed content
<script async src="https://www.googletagmanager.com/gtag/js?id=UA-26701480-12"></script>

Targethttps://zdnet.co.kr/js/jquery-1.9.1.min.js

HTML response line 110 · /html/head/script[6]

This file is referenced by the page. Find duplicate tags and remove or conditionally load files that are unused here. File count alone does not establish a defect in this file.

View evidence and example changes
Observed content
<script src="/js/jquery-1.9.1.min.js"></script>

Targethttps://zdnet.co.kr/js/jquery.flexslider.js

HTML response line 112 · /html/head/script[7]

This file is referenced by the page. Find duplicate tags and remove or conditionally load files that are unused here. File count alone does not establish a defect in this file.

View evidence and example changes
Observed content
<script src="/js/jquery.flexslider.js"></script>

Targethttps://zdnet.co.kr/js/common.js?ver=20250104

HTML response line 113 · /html/head/script[8]

This file is referenced by the page. Find duplicate tags and remove or conditionally load files that are unused here. File count alone does not establish a defect in this file.

View evidence and example changes
Observed content
<script src="/js/common.js?ver=20250104"></script>

Targethttps://zdnet.co.kr/js/common_index.js?ver=20240927T1

HTML response line 114 · /html/head/script[9]

This file is referenced by the page. Find duplicate tags and remove or conditionally load files that are unused here. File count alone does not establish a defect in this file.

View evidence and example changes
Observed content
<script src="/js/common_index.js?ver=20240927T1"></script>

7 targets; the first five are shown. Review the full saved list in the details below.

Compression

Needs review
The expected configuration was not detected.

This checks the HTML Content-Encoding header. Compression can reduce transfer size, with savings depending on the response.

Recommended action

Review text compression on the server or CDN, treating already compressed image formats separately.

Targets and suggested changes

Targethttps://zdnet.co.kr/

Server / CDN compression settings

Enable actual gzip/Brotli compression for this response and verify transfer size. Do not manually add Content-Encoding without compressing the body.

View evidence and example changes
Example - adapt to the actual content and environment
Content-Encoding: gzip

Security headers

Passed
4/6

Tool heuristic: at least 3 of 6 selected headers present

This detects selected security-related response headers. Their count does not establish policy quality or protection.

Keep in mind

Review CSP, HSTS and other values for the application, then test for blocked resources or broken functionality.

HTTPS

Passed
https://zdnet.co.kr/

This checks whether the final analyzed page used HTTPS. It is not a security audit of the whole site.

Keep in mind

Review certificate validity, mixed content and HTTPS on important linked pages and forms.

HTTPS redirect

Passed
https://zdnet.co.kr/

This checks whether a request starting over HTTP ends on HTTPS.

Keep in mind

Configure consistent HTTP-to-HTTPS redirects and check for unnecessary chains or loops.

W3C validity

Not checked
Not verified in this analysis.

These are HTML validation results from W3C Nu, not a ranking, accessibility or security certification.

Recommended action

Check network restrictions and provider availability before retrying. An unknown result is not a confirmed failure or a zero score.

CSS files and locations3 saved

Up to 100 files per type are saved. File count alone does not establish a defect in any file.

URLHTML response location
https://zdnet.co.kr/css/icon_font.css?ver=2024051533 · /html/head/link[2]
https://zdnet.co.kr/css/default.css?ver=2025010434 · /html/head/link[3]
https://zdnet.co.kr/css/main.css?ver=2025010436 · /html/head/link[4]
JavaScript files and locations7 saved

Up to 100 files per type are saved. File count alone does not establish a defect in any file.

URLHTML response location
https://www.googletagmanager.com/gtag/js?id=UA-26701480-12100 · /html/head/script[4]
https://zdnet.co.kr/js/jquery-1.9.1.min.js110 · /html/head/script[6]
https://zdnet.co.kr/js/jquery.flexslider.js112 · /html/head/script[7]
https://zdnet.co.kr/js/common.js?ver=20250104113 · /html/head/script[8]
https://zdnet.co.kr/js/common_index.js?ver=20240927T1114 · /html/head/script[9]
https://zdnet.co.kr/js/lazyload.min.js116 · /html/head/script[10]
https://zdnet.co.kr/js/jquery.blockUI.js117 · /html/head/script[11]
Security response headersView values
strict-transport-security
max-age=31536000; includeSubDomains; preload
content-security-policy
default-src 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval' https:; style-src 'self' 'unsafe-inline' https:; img-src 'self' data: https:; font-src 'self' https:; connect-src 'self' https:; frame-src 'self' https:; form-action 'self' https://search-m.zdnet.co.kr https://search.zdnet.co.kr https://sharer.kakao.com https://*.kakao.com; media-src 'self' https:; object-src 'none'; base-uri 'self'; upgrade-insecure-requests;
x-content-type-options
nosniff
x-frame-options
SAMEORIGIN
referrer-policy
Not found
permissions-policy
Not found
W3C messages0 saved

The external service is unavailable. Please try again later.

06

Search and AI crawlers

4 checks

Robots.txt

Passed
robots.txt

This checks the robots.txt response. File presence does not verify all crawler permissions or actual indexing.

Keep in mind

Review bot and path rules for your intended policy. Protect private information with authentication and access controls.

XML Sitemap

Passed
https://zdnet.co.kr/sitemap_category.xml

This detects a sitemap format at a declared or default URL. It does not crawl and validate every listed URL.

Keep in mind

Include intended canonical URLs and meaningful update dates. Declare a custom sitemap location in robots.txt.

llms.txt

Needs review
The expected configuration was not detected.

This checks for a text response at /llms.txt. Its presence does not guarantee use by an AI service or search visibility.

Recommended action

If you publish one, describe public resources accurately and keep its content and links current.

Targets and suggested changes

Targethttps://zdnet.co.kr/llms.txt

/llms.txt

If desired, publish UTF-8 text at the root and add real public documentation links. This is optional.

View evidence and example changes
Example - adapt to the actual content and environment
# IT세상을 바꾸는 힘 지디넷코리아

- [Home](https://zdnet.co.kr/)

AI crawlers

Passed
AI search/answer bots allowed 5/5 · training bots allowed 3/3

Passes when every AI search/answer bot is allowed; training bots are shown for reference only

This interprets root-path robots.txt rules for five AI search/answer bots (which read pages to cite them in answers) and three training bots. Only the search/answer bots decide the result; training bots are shown for reference. Actual citations are not checked.

Keep in mind

Allow the search/answer bots if you want to be cited in AI answers. Blocking training crawlers is a policy choice and does not affect this result.

Bot access to the root path

OAI-SearchBot Search/answerAllowed
ChatGPT-User Search/answerAllowed
Claude-SearchBot Search/answerAllowed
Claude-User Search/answerAllowed
PerplexityBot Search/answerAllowed
GPTBot TrainingAllowed
ClaudeBot TrainingAllowed
Google-Extended TrainingAllowed
robots.txt sourceExpand
User-agent: facebookexternalhit
Allow: /

User-agent: Facebot
Allow: /

User-agent : *

Allow: /
Disallow : /Include2/user/
Disallow : /Contents/

Sitemap: https://zdnet.co.kr/sitemap_category.xml
Sitemap: https://zdnet.co.kr/feed/article_list.xml
Sitemap: https://zdnet.co.kr/feed/article_list2.xml
07

PageSpeed Insights

External performance test

Run Google Lighthouse performance, accessibility, best practices and SEO checks. Device-specific results are cached for one day and are separate from the overall score above.