Open Graph and Social Preview Checker
Check the tags that decide how a link looks when it is shared.
About this tool
Reads the Open Graph and Twitter Card tags on a page and reports what a social platform or chat app will have to work with.
These failures are quiet. The page works, the link just looks like nothing — no title, no image, sometimes a stray fragment of navigation text. Nobody gets an error, so it survives for years. The usual cause is an image at the wrong shape: a square logo in a 1.91:1 slot is cropped straight through the middle.
Common questions
What size should the image be?
1200 by 630 pixels, a 1.91:1 ratio. That fills the large card format most platforms use. A square image in that slot is cropped top and bottom, which is why logos so often appear cut in half.
Do I need Twitter tags as well as Open Graph?
Mostly no. Twitter falls back to Open Graph for title, description and image. The one tag worth adding is twitter:card, which decides between a small thumbnail and a large image.
I updated the tags but the old preview still shows.
Platforms cache aggressively — often for days. Use the platform's own debugger to force a refresh; there is nothing you can change on your side to clear it faster.
Must the image URL be absolute?
Yes. A relative path is not resolved by the crawler fetching your page, so the image is simply dropped and you get a preview with no picture.