// docs
Watermark & Redact docs
Short, hands-on tutorials. Open the tool in another tab and follow along; everything runs locally in your browser.
Tutorials
Beginner · 5 min
How to watermark a PDF in your browser
Stamp a PDF with the recipient, purpose, and expiry date, pick a style, check the live preview, and download. No upload, no account.
Intermediate · 7 min
Per-recipient watermarks: trace who leaked a PDF
Send the same document to several people, give each copy its own forensic ID, QR code, and hidden layers, then identify the source of a leaked copy.
Quick answers
Is my file uploaded anywhere?
No. The PDF is read into memory and processed in your browser. Nothing is sent to a server or stored.
How do I redact without a watermark?
Uncheck every watermark style, then turn on redaction categories or use the Redact toolbar above the live preview.
Can I redact by selecting text?
Yes. Pick Select text in the Redact toolbar and drag across words, or Draw box for images and signatures.
How do I tell whose copy leaked?
Give each recipient their own tracking ID and keep the audit reports. The tracing tutorial covers it end to end.