I have a PDF which is password-protected (40-bit RC4), which I need to modify. Needless to say, I don't know the password.

I'm looking for a software which can either unprotect such PDF documents, or edit them regardless of the protection. Additional requirements:

  • edited PDF should have a reasonable size (i.e. I can print to TIFF and edit at will, but I hope for a better option)
  • software should operate offline (the PDF contains sensitive information and cannot be uploaded to online service)
  • parts of the PDF which I didn't edit should remain unchanged when printed.
  • Linux support is preferred, but Windows is fine too.

Use case: providing a bank statement for the expense report, while removing lines I don't want to share with my employer (like online banking access code).

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