PDF Redact Tools helps with securely redacting and stripping metadata from documents before publishing.
Warning: PDF Redact Tools uses ImageMagick to parse PDFs. While ImageMagick is a versatile tool, it has a history of some terrible security bugs. A malicious PDF could exploit a bug in ImageMagick to take over your computer. If you're working with potentially malicious PDFs, it's safest to run them through PDF Redact Tools in an isolated environment, such as a virtual machine, or by using a tool such as the Qubes PDF Converter instead.