All tools below remove (unlock restrictions). None can remove a strong user password without brute-force.
# Clone the repo git clone https://github.com/robins/pdfcrack.git cd pdfcrack make pdf password remove github top
(Bash + Ghostscript)
Many developers turn to Python libraries hosted on GitHub to create custom scripts. Libraries like pikepdf (which is based on QPDF) are extremely popular. All tools below remove (unlock restrictions)
If you clarify whether you need to remove (requires knowing it) or owner password (restrictions only), I can recommend the exact tool and command. pdf password remove github top
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