PDF Tool
PDF Watermark
Add text watermarks to all pages of your PDF. 100% in-browser processing — nothing is uploaded.
🔒 Your PDF never leaves your device. 100% in-browser processing.
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How to use this PDF Watermark Tool
Adding watermarks to your PDF is simple and fast with our free online tool. Start by uploading a PDF file using the drop zone above or by clicking to select a file from your device.
Once uploaded, enter your desired watermark text in the text field. You can use any text like CONFIDENTIAL, DRAFT, or SAMPLE. Adjust the opacity slider to control how prominent or subtle the watermark appears. Click Add Watermark & Download PDF and your watermarked PDF will be downloaded automatically.
What this PDF watermark tool does
- ✓Add custom text watermarks — Add any text as a watermark to your PDF pages.
- ✓Adjustable opacity — Control the transparency of the watermark from subtle to prominent.
- ✓Automatic centering — Watermarks are centered on each page for consistent appearance.
- ✓Diagonal placement — Watermarks are rotated 45° for a professional look.
- ✓100% in-browser — Your file never leaves your device for complete privacy.
- ✓No sign-up required — Completely free to use with no account needed.
Common use cases
- •Mark confidential documents with "CONFIDENTIAL" or "DO NOT SHARE"
- •Add "DRAFT" or "PREVIEW" to documents still under review
- •Watermark samples or proofs with "SAMPLE" or "DEMO"
- •Protect intellectual property with copyright notices
- •Add company branding to internal documents
- •Mark documents as "VOID" or "CANCELLED" when needed