Frequently asked questions
Quick answers on installing, registering, and using PDF Decrypter Pro.
General
What does PDF Decrypter Pro do?
It removes the owner password and printing, copying, and editing restrictions from PDF files you created, own, or are authorized to modify. All processing happens locally on your computer — nothing is uploaded to the cloud.
Is PDF Decrypter Pro safe to use?
Yes. It contains no adware or spyware, does not collect or transmit personal data, and requires no third-party software such as Adobe Acrobat or Reader.
Can it remove a password I don’t know?
No. PDF Decrypter Pro removes the owner password that blocks permissions on documents you have rights to use. It does not brute-force unknown passwords, and it is not intended to access copyrighted material you do not have rights to. See our Terms of Use.
Installation
How do I install on Windows?
Download pdfdecrypter.exe from the download page, open it, and follow the on-screen instructions. The installer supports Windows 11 / 10 / 8 / 7 (32-bit and 64-bit).
How do I install on macOS?
Download the .dmg file, open it, and drag PDF Decrypter Pro into your Applications folder, then launch it. Requires macOS 10.8 or later.
How do I uninstall?
On Windows, go to Control Panel › Programs › Uninstall a program and remove PDF Decrypter Pro. On macOS, drag the app from Applications to the Trash.
Registration & licensing
How do I register with my key?
Open PDF Decrypter Pro, open the Register dialog, paste your registration code, and confirm. Your license unlocks unlimited use on the purchased platform.
What are the license prices?
Personal License $29.95, Business License (3 users) $39.95, Business License (10 users) $59.95, Unlimited Site License $99.95. All prices are in USD. See the purchase page.
I paid but haven’t received my key. What now?
Keys are emailed within minutes of payment. Check your spam/junk folder first, and confirm the email address on your order is correct. If it still hasn’t arrived, contact support with your order details.
Technical
Which encryption types are supported?
PDF Decrypter Pro handles 40-bit RC4, 128-bit RC4, and AES encryption, including compressed files and unencrypted metadata. It supports PDF 1.8 format.
Can I process multiple files at once?
Yes. Add as many files as you need and click Decrypt PDF to process the whole list in one pass. Files that are not encrypted are skipped automatically.
Do I need Adobe Acrobat or Reader?
No. PDF Decrypter Pro is fully stand-alone and works without Adobe Acrobat, Adobe Reader, or any other software.
Still have a question?
Our support team replies within 12–24 hours.