Watermark PDF Securely – 100% Browser-Based, Free & Unlimited
Add a customizable text or image watermark to all pages of your PDF document.
Drag & drop your PDF Files here
Why Choose Our PDF Watermarker?
Custom Text & Logo Watermarks
Stamp custom text like 'CONFIDENTIAL' or upload company logo images onto your pages.
Protect Your Copyright
Adjust opacity transparency, font color, and diagonal rotation to safeguard your documents.
100% Private & Local
Your files are processed entirely inside your browser. Nothing is ever uploaded to external servers.
Lightning Fast Speed
Zero waiting for file uploads or server queues—results are generated instantly on your machine.
Unlimited Free Use
Process as many PDF files as you need with no daily restrictions, caps, or hidden costs.
No Sign-Up Required
Get straight to work without creating an account, giving an email address, or logging in.
Clean & Watermark-Free
Your output PDFs remain 100% clean, professional, and free of any added branding.
How to Watermark PDF Files
- Drag and drop your PDF file or click Select PDF File.
- Type your watermark text or upload an image and adjust styling.
- Click Watermark PDF.
- Download your protected PDF instantly.
That's it—your documents are watermarked securely without ever leaving your device.
Perfect For
- Stamping documents as "CONFIDENTIAL"
- Marking drafts and preliminary designs
- Protecting copyrighted materials
- Adding company logos to invoices
- Indicating document status (e.g., "APPROVED")
Frequently Asked Questions
Can I choose diagonal text watermarks across the page?
Yes! You can rotate your watermark text diagonally (e.g. 45 degrees) to cover document pages effectively.
Can I adjust watermark opacity so the text underneath remains readable?
Yes, you can set opacity transparency (e.g. 20% - 30%) so the watermark is visible without obscuring underlying text.
Can I use my company logo as a watermark?
Yes, you can upload transparent PNG logo images to stamp across your document pages.
Are my PDF files uploaded to any server?
No. All processing takes place entirely within your browser memory. Your confidential files never leave your device.
Is this tool free to use without limits or watermarks?
Yes! Our tools are 100% free to use with no account registration, hidden subscriptions, or added watermarks.
Watermark your PDFs with confidence using a secure, browser-based PDF Editor designed for speed, privacy, and unlimited use.