# September 17, 2026 - Scan

Check how a link unfurls before you post it.

> For the complete documentation index, see [llms.txt](/llms.txt). Markdown variants are available by appending `.md` to any URL or sending an `Accept: text/markdown` header. An agent skill is available at [/.well-known/agent-skills/site-skill.md](/.well-known/agent-skills/site-skill.md).



We added [Scan](/scan). Paste a URL and see the card the way each platform will
draw it, alongside anything worth fixing.

The previews are X, Facebook, LinkedIn, Slack and Discord, because each frames a
shared link differently and a card that reads well in one can read badly in
another. Under them is a plain list of what to change: a missing `twitter:card`
so X shrinks the image to a square, absent `og:image:width`, an image that
redirects, a file heavy enough that some platforms refuse it.

Every check is a real request made as that crawler, so the answer is what those
services will actually get rather than a cached third party result.

We also fixed `Showcase`, which threw when its optional `accent` prop was left
out. The documented example renders again.

Both contributed by [@bhaumikmistry](https://github.com/bhaumikmistry).