Protect PDF
Lock a PDF with a password so the file cannot be opened, printed or copied without it. Encryption uses AES-256, the same standard used for classified government documents.
Common questions
How strong is the encryption?
AES-256, the same standard used for classified government documents.
Can I also stop people printing or copying?
Yes. Restriction flags can block printing and copying independently of the password.
Can I remove a password later?
Yes, as long as you know the current password.