Watermark PDF
Stamp your text across every page — mark drafts, protect submissions.
Tap to choose a file
How it works
-
Choose or drop the PDF you want to mark.
-
Type the watermark text and adjust size, opacity, and angle.
-
Click Add Watermark.
-
Download the watermarked PDF.
Frequently asked questions
Is the watermark added to every page?
Yes — the text is repeated diagonally across all pages of the document, behind a transparency level you control.
What settings work best?
The defaults (size 30, 30% opacity, 45° angle) keep the page readable while making the mark obvious. Lower the opacity for a subtler stamp, or raise the font size for a bolder one.
Can a watermark be removed later?
A determined editor can remove most watermarks, so treat them as a deterrent and a label, not as security. For real protection, combine with password protection.
What happens to my file?
It's processed on our server and automatically deleted within 1 hour. We never read or share your documents.
What's the maximum file size?
100 MB per PDF.
Related tools
Add Page Numbers
Number every page of your PDF — perfect for theses, reports, and submissions.
Protect PDF
Lock your PDF with a password so only the right people can open it.
Sign PDF
Draw your signature once and place it exactly where the form needs it.
Compress PDF
Reduce PDF file size while keeping your document readable.