Add Watermark
Add a watermark to your PDF — processed entirely in your browser.
Files stay on your device
100% Browser-based
No account needed
Drop your PDF to add a watermark
Supported: .pdf (up to 100.0 MB)
Frequently Asked Questions
What opacity level should I use?
For visible watermarks, 30-50% opacity works well. For subtle background marks, 10-20% is recommended. The default is 15% for a professional, non-intrusive look.
What image formats are supported?
PNG and JPG images are supported. PNG images with transparency work best for watermarks since they blend naturally with the page content.
Can I add watermarks to specific pages only?
Currently, watermarks are applied to every page of the document. For more granular control, consider splitting your PDF first, adding watermarks, then merging the results.