PDF Watermark – Add Text Watermark to PDF Documents Free
Add custom text watermarks to your PDF documents online for free. Mark PDFs as Confidential, Draft, Copy or any custom text — no software needed, works in your browser. Your files are never uploaded to any server. No signup required.
Why Watermark PDF Documents?
Adding a watermark to a PDF communicates the document's status at a glance and provides a layer of intellectual property protection. Common reasons to watermark a PDF include marking draft versions, protecting proprietary information, branding official documents and deterring unauthorised printing or distribution.
Common Watermark Text Types
| Watermark Text | Used By | Purpose |
|---|
| CONFIDENTIAL | Businesses, legal teams | Restrict document distribution |
| DRAFT | Writers, designers, lawyers | Show document is not final |
| COPY | Offices, government | Distinguish from original |
| FOR REVIEW ONLY | Publishers, editors | Limit use to review context |
| ©YourBrand 2026 | Content creators | Copyright notice and branding |
| SAMPLE | Freelancers, designers | Share work without full usage rights |
PDF Watermark Tips
- Diagonal placement — a diagonal watermark is harder to crop out and harder to ignore
- 40–50% opacity — visible without obscuring the document content completely
- Large font size — for a single-word watermark, use a large font to cover the page
- Consistent styling — match watermark colour to your brand (e.g. company colour)
💡 For legal documents, a watermark alone does not make a document legally binding or prevent copying. Use document encryption (password protection) in addition to watermarking for truly sensitive files.
Frequently Asked Questions
Is my PDF uploaded to a server?No. PDF watermarking runs entirely in your browser using PDF.js and canvas. Your document never leaves your device.
Can someone remove a PDF watermark?Simple watermarks can be removed using PDF editing software. For strong protection, use a PDF with content restrictions (password) in addition to a watermark, or use specialised document security tools.
What page size PDFs are supported?A4, Letter and most standard PDF page sizes are supported. The watermark is scaled proportionally to fit the page.
Can I watermark multi-page PDFs?Yes — the watermark is applied to every page of the PDF document automatically.