Add Watermark to PDF — Free Online Tool
Protect or brand your PDF with a custom text watermark. Set opacity, angle, and color — all processed in your browser, no sign-up.
When it's useful
- Stamp 'DRAFT' diagonally on every page of a proposal before sending it for feedback
- Add your studio name as a watermark on a photography portfolio PDF
- Mark 'CONFIDENTIAL' on NDA pages before distributing them to multiple parties
How to add a watermark to PDF
- 1Upload your PDF file to the upload area
- 2Enter watermark text (e.g. 'Confidential' or your company name)
- 3Adjust settings: font size, color, opacity, and rotation angle
- 4Click 'Add Watermark' and download your watermarked PDF
Features
- Custom text watermark applied to all pages at once
- Full control over font size, color, and opacity
- Adjustable rotation angle for diagonal or horizontal placement
- Processed entirely in your browser — your file never leaves your device
FAQ
Is the watermark added to every page?
Yes, the watermark is applied to all pages of the document simultaneously.
Can I remove the watermark after adding it?
The watermark is embedded into the PDF and cannot be easily removed without specialized software. Keep a copy of the original before watermarking.
How do I make the watermark semi-transparent?
Use the opacity setting: 20–40% gives a subtle background mark, while 80–100% makes it clearly visible.
What text should I use for a watermark?
Popular choices include 'Confidential', 'Draft', 'Sample', your company name, or the recipient's name.
Will the document quality be affected?
No. Text content and images remain unchanged — the watermark is added as a separate layer on top of each page.
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