Edit PDF
Add a Watermark to Your PDF
Stamp every page with custom text or an image watermark — perfect for branding or marking drafts.
- Browser-based processing
- No signup required
- Free forever
Drag & drop your PDF here
How It Works
-
Upload your PDF
Drag and drop or browse to select the file you want to watermark.
-
Choose watermark type
Add custom text or upload an image like your logo.
-
Customize appearance
Pick color and font size for text, or let the image scale automatically.
-
Download watermarked file
Every page gets the watermark — ready to share or archive.
Your Files Stay Private
- Files never leave your device
- All processing happens locally in your browser
- No data is stored or transmitted to any server
How does browser-based processing work?
This tool uses pdf-lib, an open-source JavaScript library that runs entirely in your browser. Your PDF and watermark image are processed in memory, and the result is generated on your device. No network requests are made during processing.
Frequently Asked Questions
Is it safe to add a watermark here?
Yes. Your file never leaves your browser. All watermarking is performed locally using JavaScript — no uploads, no servers, no third parties involved.
Can I use my logo as a watermark?
Yes. Upload any PNG or JPEG image and it will be placed as a watermark on every page of your PDF.
Does the watermark appear on every page?
Yes. The watermark is applied to every page in the document automatically.
Does this work on mobile?
Yes. The tool works in any modern browser on phones, tablets, and desktops.