Enter a URL to preview its share card on KakaoTalk, Facebook, X and Slack, and check og:image size, ratio and missing tags.
KakaoTalk, Facebook and Slack read a page's <meta property="og:..."> tags to build the title, description and image card.
1200×630 (1.91:1), https, under 8MB. Under 600px shows as a small card; under 200px Facebook ignores it. Resize with the Social Image Resizer.
Reads og:title, og:description and og:image. Off-ratio images are center-cropped. Cards are cached; clear them in the Kakao sharing debugger.
Reads OG tags and og:url. http images or slow images are dropped from the card.
twitter:card = summary_large_image gives the large image card; otherwise OG tags produce a small card.
Read OG tags, then twitter tags, then title/description.
Missing tags, title/description length, image size, ratio, weight and http, plus a recommended tag snippet.
KakaoTalk caches cards. Clear the cache in the Kakao developers sharing debugger; on Facebook use "Scrape again" in the Sharing Debugger.
The image URL is http, the server blocks the Kakao bot (kakaotalk-scrap), or the image responds slowly.
No. It reads pages without logging in, like the Kakao and Facebook bots.