Watermark PDF

Stamp your own text diagonally across every page — your company name, "CONFIDENTIAL", your name, or anything else — a visible, free ownership marking. Free, no signup. Want it invisible instead of visible? That's the Guarded fingerprint below.

No signup required — start immediately
Real document security, not just a marketing label
Completely free, no hidden limits

Click to select a PDF file

or drag and drop

Watermark PDF — GuardedProAlso embeds an invisible fingerprint — if it leaks, you can trace which copy it was. You still get your own direct download, plus a share link to send instead of the raw file. Sign in to enable

This is just the start — Pro also gets you, from £4/month

•Revoke access instantly, even after it's been opened
•Invisible fingerprinting on every document
•Photo verification on open — approve or deny in 60 seconds

+9 more Pro features, from £4/month →

How to add a watermark to a PDF

Upload the PDF you want to mark.
Type the watermark text — a name, a date, "CONFIDENTIAL," anything.
Download the stamped file.

Common reasons to watermark a PDF

Marking a draft as "DRAFT" or "CONFIDENTIAL" before circulating it for review
Stamping a company name across a document sent to an external party
Branding a document with your name before submitting it somewhere it could get copied

FAQ

Can I choose the watermark text?

Yes, type anything — a name, a date, "CONFIDENTIAL," a company name.

Does the watermark cover the actual content?

It's stamped diagonally and semi-transparently — visible, but not blocking the document from being read.

Can I combine this with an invisible fingerprint too?

Yes — turn on Guarded to add invisible per-copy tracing on top of the visible watermark.