Password Protect PDF
Encrypt a PDF with a real opening password using QPDF compiled to WebAssembly.
📄 Upload PDF
Choose one PDF file to begin.
🛠️ Tool Settings
The owner password grants full access and is needed for meaningful permission restrictions.
⚠️ Important Note
The passwords are not recoverable. Save them securely. Permission restrictions depend on PDF-reader behavior and are not DRM. Files stay in this browser.