Watermark PDF
Stamp a text watermark across every page of a PDF — adjust the text, size, color, opacity and angle.
Drop a PDF here
or click to choose a file
Stamp & brand
Lay your mark across every page
Add a text watermark to a PDF and fine-tune exactly how it sits — size, colour, opacity, angle and whether it tiles or sits as a single diagonal mark. Use this free PDF watermark tool to stamp a PDF with text like a 'Draft' or 'Confidential' mark; a live preview shows the result before you commit, so you can put a watermark on a PDF online and get the branding just right.
- Custom watermark text with adjustable size and color
- Control opacity, rotation and tiling
- Live preview before you export
- 100% client-side — your document never leaves your device
Four steps to a stamp
Brand a document the way you want it
Applying a watermark takes seconds, and you stay in control of how bold or subtle it looks.
- 1
Open your PDF.
- 2
Type the watermark text and tune its size, colour, opacity, rotation and tiling.
- 3
Preview it live and tick exactly which pages should carry the mark.
- 4
Download the stamped document.
Put it to work
Reasons to stamp a document
A watermark sets expectations and protects ownership the moment a file leaves your hands.
Flagging a file as 'Confidential' or 'Draft' before it circulates.
Branding proposals, quotes or proofs with your company name.
Guarding original work with a copyright mark on every page.
The options
Browser stamping vs design software
See how adding watermarks here compares with paid PDF suites and the upload-based stamping sites.
| Feature | InkyTools | Desktop software | Upload-based sites |
|---|---|---|---|
| Completely free | |||
| Files stay on your device | |||
| No sign-up or account | |||
| Nothing to install | |||
| Works on any device | |||
| No watermarks or limits |
Quick answers
Watermarking questions, sorted
- How do I add a watermark to a PDF?
- Upload your PDF, type your watermark text, then adjust its size, colour, opacity, rotation and tiling with a live preview before downloading the watermarked file.
- Can I watermark only some pages?
- Yes. Use the page checkboxes in the sidebar to include or exclude individual pages, so the watermark is applied only where you want it.
- Is the watermark tool free?
- Yes. Watermarking PDFs with InkyTools is free and happens entirely in your browser — your document is never uploaded.
Yours alone
Files are stamped on your device
Watermarks are applied right in the browser, so the document you're branding is never uploaded — your draft contracts and proofs stay private while you mark them up.
- Nothing uploaded
- Works offline
- No sign-up, any device
Watermark PDF: free, private and browser-based
InkyTools is a free PDF watermark tool that lets you add watermark to PDF online in seconds. Type your text to stamp PDF with text — a draft watermark PDF, a confidential stamp PDF, your company name or a copyright line — and add text watermark to PDF pages with full control over size, colour, opacity and angle.
A live preview shows the result before you put watermark on PDF documents, and you can watermark PDF online free with no sign-up. Everything runs in your browser, so you can watermark PDF free without uploading the file you're branding — ideal for proofs, drafts and protecting original work.