Invisible Watermark

Protect and track your pictures, ID and documents. Secretly.

Sharing photos with your fans, sending your passport to a landlord, delivering a shoot to a client: mark each copy with who it's for. The mark is invisible, so the people you send it to won't know it's there. If a copy turns up where it shouldn't, upload it here and you'll see whose it was.

Hosted in the European Union and covered by the GDPR, the EU's data protection law. Your picture is deleted as soon as it's marked.

Your first 3 pictures are free, no account needed.

Only you can read this note later.

Can you see the mark?

Sample US passport page, original The same sample US passport page, marked with an invisible code OriginalMarked copy

Sample page: US State Department specimen, public domain, from Wikimedia Commons.

Assume your ID will leak. Will you know where from?

Every copy you send lands in someone else's system, and those systems get breached.

Once a copy is out, it's out. What you can do is make sure each copy names the landlord, the bank or the employer you gave it to, so that when one turns up, you know exactly who lost it. Marking takes about 5 seconds, and your first 3 pictures are free.

What people mark

How does the invisible watermark work?

You choose the picture and write who it's for. We hide a code inside the picture, spread so thin that the copy looks exactly like the original, so you can post, publish or send it as it is. Make one copy per person: the agency gets one, the bank another. When a copy leaks, the check shows the note you wrote and the day you made it.

What does the mark survive?

The mark stays in the picture when it's compressed for email or a chat app, resized, screenshotted, cropped or turned black and white. A copy that has been cut down hard is still recognised as marked here.

Can my AI assistant mark pictures for me?

Yes. There's an MCP server, so Claude, Codex and other assistants can mark any picture on your computer and check one you found, right from the conversation. The marked copy is saved next to the original, named after the person it's for, like passport-oak-street-apartments.jpg. Each picture uses one of your credits, and your notes stay private to your account.

How do I connect my assistant?

1. Create a key in your account.

Do you keep my picture?

No. We mark it, send it back to you and delete it straight away. It's never saved, logged or shared.

What do you keep?

For each copy, a random code, the date and your note, encrypted. Without an account, only your receipt code opens the note, and we don't keep that code. With an account, you can delete any copy from your list.

Is it GDPR compliant?

Yes. The service is hosted in the European Union and runs under the GDPR. We collect the minimum: no pictures, no advertising, no trackers. Every upload travels over an encrypted connection, your notes are stored encrypted, and you can have your account and its data deleted at any time.

Your account

An account keeps a list of every copy you made, so you can check a leaked picture without a receipt code.