: This is widely considered the industry standard for command-line PDF manipulation. It isn't just for decryption; it can merge and split files too. To remove a known password, you can run: qpdf --password=YOUR_PASSWORD --decrypt input.pdf output.pdf .
Users wanting a GUI and extra PDF tools without installing desktop software.
⚠️ These tools remove owner passwords (restrictions on printing/copying) when you know the password. They cannot recover a user password needed to open the file without brute force. Only use on PDFs you own or have permission to modify. pdf password remove github top
If you are looking for more specific tools, you can browse these curated GitHub topics:
If you already have the password and can open the file, you can "produce a paper" copy or a new digital file without a password by using the feature: Open the PDF and enter the password. Press Ctrl + P (Windows) or Cmd + P (Mac). : This is widely considered the industry standard
This method works with both user passwords (for opening) and owner passwords (for permissions).
git clone https://github.com/vikflow/PDF-decrypter.git cd PDF-decrypter python -m venv venv source venv/bin/activate # On Windows: venv\Scripts\activate pip install pikepdf python unlocker.py Users wanting a GUI and extra PDF tools
Once you have the hash, you use Hashcat or John the Ripper to brute-force or use a dictionary attack to find the original password. Understanding "User" vs. "Owner" Passwords
A: For owner passwords (restrictions on printing/copying), many tools (especially qpdf) can automatically remove them. For user passwords (required to open the document), you generally need to know the password or use a cracking tool like pdfrip or pdf-cracker-tool.
If you prefer a visual click-and-drag experience, these desktop applications built on open-source code are highly rated.