User/Open password
The opening authority of PDF, you can’t open and access to an unauthorized PDF file, the contents are secured.

Owner/Permissions password
The restrictions to print, edit or copy PDF, they share the same password, you can selectively restrict as needed.

PDF with owner password only
Whether you know the owner password or not, you can directly remove the owner password.

PDF with user password
If you know the user password, you only need to enter the user password and all passwords will be easily removed. If you don't know the user password, no matter how complex the user password is, you can also remove all passwords by brute force.

Powerful brute force ability
Removing protection won’t hurt the original PDF file’s quality at all, every byte and digit in the PDF file will stay safe.

Provide clues for decryption
To accelerate the decryption, you can provide clues about the original password as accurate as possible, such as length, contained lowercase or uppercase Latin letters, numbers, special symbols, etc.

Visual decryption progress
The remaining time and average speed of your decryption process will be clearly showed on the decryption panel. You can leave the decryption aside and focus on your work until the end of the decryption.