Document Security
Add Watermark to PDF Locally
Add anti-theft and confidential text watermarks to ID scans, contracts, and sensitive PDFs. Runs 100% client-side with zero cloud transmission.
Drop a PDF file here, or click to choose
Supports clipboard paste (Ctrl/Cmd+V) · 100% client-side, zero upload to cloud
FAQ
FAQ & Privacy Guidelines
Why should I watermark scanned ID documents?
Watermarking scans with 'FOR [PURPOSE] ONLY' prevents unauthorized parties from using your documents for identity theft or fake loan applications.
Why is tiled mode recommended?
Tiled diagonal watermarks cover the entire document surface, making it nearly impossible for bad actors to crop or clone-stamp out the protection.
Are my confidential files uploaded anywhere?
Never. All text rendering and PDF byte manipulation occur strictly inside your local browser memory via JavaScript.