Security
Protect PDF
Encrypt a PDF with separate opening and owner passwords.
Processing runs in this browser tab, without a document upload or account. Your device and browser extensions may still access files.
PDF · up to 4 MB and 20 pages · one file
Or drag and drop files here. Your files stay on this device.
Keep your passwords privately.
- 1Choose files
- 2Check options
- 3Download & review
Get a useful result
How to password protect a PDF
Use an opening password for reading and a different owner password for changing protection. PDFLane creates a supported AES-256 encrypted PDF locally.
- Store the owner password privately. It is required by PDFLane to unlock this file later.
- New passwords need 9–32 characters and must fit the format’s 127 UTF-8-byte limit.
Common questions
Will PDFLane remember my passwords?
Passwords are supplied to the tab and its Worker for this request, then cleared from the form after processing. There is no account or password recovery service.
Is the owner password the same as the opening password?
They must be different. Giving someone the opening password lets them read the document; keep the owner password privately.