Watermark PDF
Add a text or image watermark to your PDF — with a live preview and no mark on the output. Free, fast and secure.
or drop a PDF here
Files under 15 MB are watermarked in your browser — nothing leaves your device.
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Related tools
Protect your brand or mark documents as confidential with oMyPDF's Watermark PDF tool. Add a text watermark or upload your own logo image, then fully control the position, opacity, rotation, font size, and which pages it appears on. Watermarks are applied client-side for files under 15 MB, so your content stays private. No design software or sign-up needed.
How to watermark a PDF
- 1
Upload
Select a PDF from your device or drag and drop it into the workspace.
- 2
Design your mark
Type text or upload an image, then tune the font, color, opacity, rotation, position or tiling — with a live preview.
- 3
Apply & download
Click Watermark PDF and your stamped document downloads instantly.
Watermark PDF features
Text or image
Stamp any text with classic fonts, or drop in your logo as a PNG/JPG watermark.
Full control
Opacity, rotation, color, size, 9 positions, page ranges and edge-to-edge tiling — previewed live.
No output watermark
Unlike many tools, oMyPDF never adds its own mark to your file. It's private and processed in your browser.
Security & privacy
Your files stay private. For PDFs under 15 MB, watermarking happens entirely in your browser — no upload required. Larger files are processed over an encrypted (HTTPS) connection and immediately deleted from our servers. We never store, read, or share your documents.
Frequently asked questions
Is the oMyPDF watermark tool free?
Yes. Watermarking is 100% free, with no oMyPDF mark added to your output and no sign-up required.
Can I add my logo as a watermark?
Yes. Switch to Image mode and upload a PNG, JPG or WebP. Adjust its size, opacity, rotation and position.
Can I watermark only some pages?
Yes. Use the Pages field with a range like 1-3, 5 to stamp specific pages. Leave it blank to watermark every page.
Can I repeat the watermark across the whole page?
Yes. Turn on 'Tile across the page' to cover each page with a repeating, rotated watermark — great for CONFIDENTIAL or DRAFT stamps.
Are my files safe?
PDFs under 15 MB are watermarked entirely in your browser and never leave your device. Larger files are sent over an encrypted connection, processed immediately, and deleted right after.