What is Add Watermark to PDF?
Need to protect your PDF documents? Add custom text watermarks to every page of your PDF. Control the font, size, color, opacity, and rotation angle. Add "Draft", "Confidential", "Copyright" or any custom text. Everything runs in your browser — your documents never leave your device.
▶Use Cases5 scenarios
- ◆Document copyright protection
- ◆Draft labeling
- ◆Confidential document marking
- ◆Brand watermarking
- ◆Internal document identification
▶How to Use4 steps
- 1Upload your PDF
- 2Enter watermark text and adjust styling
- 3Preview the watermark effect
- 4Download the watermarked PDF
▶Features8 features
- ✓Custom watermark text
- ✓Adjustable font size
- ✓Opacity control
- ✓Rotation angle setting
- ✓Color customization
- ✓Browser-local processing
- ✓Free to use
- ✓Data secure
▶FAQ8 questions
What is Add Watermark to PDF?
An online Add custom text watermarks to your PDF documents. Control font size, opacity, color, and rotation angle.. Everything runs locally in your browser — no uploads.
What is a PDF watermark adder?
A PDF watermark adder is a tool that adds watermarks to PDF documents. Input: PDF files (max 100MB). Output: PDFs with watermarks. Commonly used for copyright protection, confidential marking, and brand promotion. Supports text and image watermarks with adjustable opacity, position, and rotation.
Will the watermark appear on every page?
Yes. The watermark is applied to every page of the PDF.
Can I add an image watermark?
Currently only text watermarks are supported. Image watermark support is coming soon.
Are my documents uploaded?
No. All processing happens in your browser. Your documents never leave your device.
What PDF operations does this tool support?
This tool supports core PDF operations including merging, splitting, converting, and editing. All processing happens in your browser using pdf-lib and PDF.js.
What is the maximum file size?
Most operations support files up to 100MB. For larger files, consider splitting them first using the PDF Splitter tool.
Are my PDF files uploaded to a server?
No. All PDF processing happens locally in your browser. Your files never leave your device, ensuring complete privacy.