Developer & Digital Tools · 🌏 Global
KakaoTalk & Naver OG Preview
Preview Open Graph tags across KakaoTalk, Naver, Facebook, X/Twitter in one view.
About this tool
OG Card Preview takes a URL and simulates how it appears as a preview card on six platforms — KakaoTalk, Naver, Facebook, X (Twitter), Discord, LinkedIn. It validates og:image, twitter:card, and Naver thumbnail simultaneously and measures the og:image’s response time, file size, content-type, and HTTPS — the most common reasons cards break. Standard-recommendation warnings (1200×630, ≤60-char title, ≤200-char description) appear in pixel and character units. All checks run in the browser (or via a discard-on-fetch server proxy) — no URLs or images are stored.
Use cases
Scenario 1
KakaoTalk preview-broken diagnosis
Automatically check og:image HTTPS, ≤1MB, and response time to surface the three most common reasons KakaoTalk previews fail.
Scenario 2
Naver universal-search thumbnail
Verify the four ingredients Naver needs (og:image, Search Advisor, sitemap inclusion, body image) and judge thumbnail eligibility.
Scenario 3
X / Twitter Card validator
Detect the og:* fallback when twitter:card is missing and check for the recommended summary_large_image to plug traffic leaks.
Scenario 4
Discord/Slack bot rejections
Surface violations of the four security conditions Discord/Slack require: HTTPS, public access, image/* MIME, HTTP 200.
Scenario 5
Pre-publish multi-platform check
Preview a new post’s OG card across all six platforms before publishing to head off truncation or breakage.
Features
- Side-by-side preview for Kakao / Naver / FB / X / Discord / LinkedIn
- og:image response time, size, content-type, HTTPS measurement
- twitter:card / Naver thumbnail / canonical validated together
- Standard-violation alerts (1200×630, ≤60-char title, ≤200-char description)
- KakaoTalk URL cache-reset instructions included
- Unlimited result PNG download
- No URL/image storage (discarded immediately on server proxy)
Frequently asked
- Q. Why does KakaoTalk fail to preview?
- A. Almost always one of: (1) non-HTTPS, (2) CDN first-fetch timeout, (3) image > 1MB. The tool checks all three.
- Q. What is the recommended og:image size?
- A. 1200×630 (1.91:1) PNG/JPG under 1MB is safe everywhere. Square crops get cut on Kakao/X.
- Q. How does the Naver thumbnail show up?
- A. You need all four — og:image + Search Advisor registration + sitemap.xml inclusion + same image visible in the body.
- Q. Tool vs Facebook Debugger?
- A. The Debugger shows only Facebook’s view; this tool compares all six platforms at once. Use the Debugger for forced cache refreshes.
- Q. Is my site data stored?
- A. No — fetched in-browser or via discard-on-use proxy. URLs and images are not stored.
Sources / references
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How we run it / disclaimer
This tool is advisory and does not constitute legal, tax, medical, or financial advice. All calculations and document generation run in your browser; inputs are never sent to a server. Ads follow Google AdSense policy and are kept separate from tool accuracy.