Watermark PDF
Stamp “CONFIDENTIAL”, “DRAFT”, or any custom text across every page of your PDF. Adjust font size, opacity, rotation, and color — then download in seconds. Runs entirely in your browser.
Drop a PDF here, or browse
Add a text watermark to every page · nothing uploaded
48pt
30%
45°
#cc0000
All watermarking happens in your browser — your PDF is never uploaded to any server.
How to watermark a PDF
- Drop your PDF into the box above or click to browse.
- Type your watermark text — for example CONFIDENTIAL, DRAFT, or your company name.
- Adjust font size, opacity, rotation angle, and color to match your needs.
- Click Add watermark and download the watermarked PDF.
Frequently asked questions
- Is my PDF uploaded to a server?
- No. The watermark is applied entirely in your browser using pdf-lib. Your file never leaves your device.
- Can I customize the watermark appearance?
- Yes. You can change the text, font size, opacity (how transparent it appears), rotation angle, and color — all from the settings panel before applying.
- Will the watermark appear on every page?
- Yes. The watermark text is stamped centered on every page of the PDF.
- Can the watermark be removed later?
- The watermark is drawn as a text element in the PDF. It can be removed with a PDF editor that supports content stream editing (such as Adobe Acrobat Pro), but not with simple viewers. For lighter opacity levels, it is easier to remove — use higher opacity if you need stronger protection.
- What font is used for the watermark?
- Helvetica Bold, one of the standard PDF fonts. It is embedded by default and provides good visibility across all PDF viewers.