Stamp text diagonally across every page of a PDF.
Open the PDF.
Type the watermark text and adjust how it looks.
Apply it and download the watermarked PDF.
Yes. It is free, with no sign-up.
No. This tool runs in your browser, so your files are processed on your own device and are never uploaded to our servers.
Yes. Type any text, such as CONFIDENTIAL or DRAFT.
Treat it as a visible marking, not security. Keep your original file if you may need an unmarked copy.