Free PDF Watermark Tool
Add text or image watermarks to your PDF documents. Free, fast, and works entirely in your browser with no sign-up required.
Upload PDF File
Drag and drop a PDF file here, or click to select
Watermark Tips
- Choose between text or image watermarks
- Text watermarks support custom font size, color, opacity, and rotation
- Image watermarks support PNG and JPEG with adjustable scale and opacity
- Use tile mode to repeat the watermark pattern across the page
- Apply watermarks to all pages or specific page ranges
- Preview tab shows an approximate rendering before processing
- All processing happens in your browser -- files are never uploaded
Frequently Asked Questions
What is the Add Watermark tool?
The Add Watermark tool is a free online utility that adds text or image watermarks to your PDF documents for branding or copyright protection.
Is the Add Watermark tool free?
Yes, it is completely free with no registration required. All processing happens client-side in your browser.
Can I customize the watermark?
Yes, the Add Watermark tool lets you adjust the text, font, size, color, opacity, and position of your watermark on PDF pages.
Is my data safe with this tool?
Absolutely. The PDF Watermark Tool processes everything client-side in your browser. No data is uploaded to or stored on any server. Your content remains private on your device at all times.
Does the PDF Watermark Tool work on mobile devices?
Yes, the PDF Watermark Tool is fully responsive and works on smartphones and tablets. You can use it on any device with a modern web browser -- no app download required.
Do I need to create an account to use this tool?
No account or registration is needed. Simply open the PDF Watermark Tool in your browser and start using it immediately. There are no sign-up walls or usage restrictions.
Is there a file size limit?
Since the PDF Watermark Tool processes files in your browser, the size limit depends on your device's memory. Most devices can handle PDFs up to 50-100MB without issues.
How do I use the PDF Watermark Tool?
Simply enter your input in the provided field, adjust any settings to your preference, and the tool will process it instantly. You can then copy the result to your clipboard or download it.
Which browsers are supported?
The PDF Watermark Tool works in all modern browsers including Chrome, Firefox, Safari, Edge, and Opera. For the best experience, use the latest version of your preferred browser.
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About Free PDF Watermark Tool
Free PDF Watermark Tool is a free, browser-based tool in our PDF Tools collection. Everything runs locally on your device — no uploads, no sign-up, and your data stays private.