Allows you to upload a file, enter the password once, and download an unencrypted version.

A powerful command-line tool. Using the command qpdf --decrypt input.pdf output.pdf can often remove editing restrictions without needing a password.

A well-known suite of free PDF tools that includes a security removal feature. 3. Open-Source & Command Line

An open-source CLI tool for batch processing PDF files. ⚠️ Why Avoid "Crack" Downloads?

If you have the official software, open the PDF and go to Tools > Protect > Encrypt > Remove Security .