What an Open Graph preview shows
When someone shares your link, the network reads a few tags in your page (Open Graph tags such as og:title, og:description and og:image, plus X card tags) and turns them into a card. This free Open Graph preview reads those tags for you and draws the card as Facebook, LinkedIn, WhatsApp and X would show it, so you can fix a missing picture or an over-long title before you share.
Check a page or build the tags
The “Check a URL” tab loads one public page, lists the tags it finds, scores them and explains each problem in plain language. The “Build tags” tab works in your browser only: fill in a title, description and image, watch the four previews change as you type, and copy the finished meta tags into your page.
How to use it
- Paste the page address and press “Check share tags”, or open “Build tags” to start from scratch.
- Compare the four previews and read the findings marked “Fix” or “Improve”.
- Update your tags, then re-check. If a network still shows the old card, refresh its saved copy with its own debugger tool.