What encryption does PDFFast use?

256-bit AES encryption, the modern standard supported by all major PDF readers.

What happens if I forget the password?

There is no backdoor — store your password somewhere safe, as it cannot be recovered from the encrypted file.

Encrypt your PDF with a password so only people you trust can open it.

Drag & drop a file here, or browse

Supports .pdf · up to 1 file · max 50MB each

Upload the PDF you want to secure.

Choose a password and set printing/copying permissions.

Download an encrypted PDF that requires your password to open.

Unlock PDF

Remove a password from a PDF