Question 1

Do I need the password?

Accepted Answer

Only if the file requires a password to open. Permission-only locks are removed without one.

Question 2

Is this legal?

Accepted Answer

Only unlock PDFs you own or are authorised to modify. Don't use this on files you shouldn't have access to.

Question 3

Do you store the password?

Accepted Answer

No. It's used once in memory during processing and discarded.

Question 4

What if my password is wrong?

Accepted Answer

The unlock will fail with an unreadable-PDF error. Try again with the correct password.