1. Upload your PDF using the box above.
2. Type your watermark text, choose position, color, size and opacity.
3. Click "Add Watermark & Download" — the file downloads instantly with the watermark applied to every page.
How do I add a watermark to a PDF online for free?
Upload your PDF, type your watermark text, adjust position, opacity, rotation and color, then download the watermarked PDF.
Can I apply the watermark to all pages?
Yes, the watermark is applied to every page of your PDF automatically.
Is my file uploaded to any server?
No, the watermark is added locally in your browser using JavaScript. Your file never leaves your device.
Can I control how transparent the watermark is?
Yes, use the opacity slider to make the watermark as subtle or as bold as you like.
Is this tool free to use?
Yes, completely free with no signup or usage limits.