Social preview checker

See how a link looks when it's shared: title, description and image, from Open Graph and X/Twitter tags.

This check runs in Supercheck.

The free checker isn't available on this site. The method below shows what it looks at.

Try it in Supercheck

How we check

We fetch the page once and read og:, twitter:, title and description tags from the head.
We send a HEAD request to the og:image URL and check that it answers with an image content type.

What this check can't tell you

We read the page's head, up to 64 KB. Each network renders cards a little differently.
The image is not loaded until you click Show image, and then straight from its own server.

Questions

Do you store the URL I check?: Results sit in a 10-minute cache. Logs keep the host and the first path segment, never the full URL or query string, and never your IP address.
Can I stop my site from being checked?: Yes. The SupercheckBot page explains how to ask for an opt-out; we add your domain to a block list.