Preview your social share card

What your link will look like when someone pastes it into Slack, X or LINE — and the tags that produce it.

Runs entirely in your browser
Works offline
No upload
No sign-up
No watermark

Loading the tool…

How it works

Enter the title, description, URL and image URL.
Check the card preview.
Copy the tags into your <head>.

Why nothing is uploaded

Every operation on this page is done by code running inside your browser tab, using the same engine that renders web pages. The file is read from disk into your tab’s memory, transformed there, and written back out as a download. It is never sent anywhere — not to us, not to a third party.

Verify it yourself

Open your browser’s developer tools (F12) and select the Network tab.
Load your file and run the tool.
The only requests you will see are the tool’s own code and, once cached, none at all.

Proof it stays local →

Frequently asked questions

My image is not showing in the preview.

The preview loads it directly from the URL you gave, with no referrer. If it does not appear, the file is not publicly reachable at that address — which means the social networks will not see it either. That is the useful part of the test.

Does anything leave my browser?

No. There is no server behind this page doing the work and no API being called — the whole tool is JavaScript running in the tab. Load it once and it keeps working with the connection off.