This is an open source application for bulk compression of PDF files.
I decided to create this application after spending a weekend trying to find some free or paid software that can bulk compress PDF files. Most of the software I found googling was full of bloatware or didn't work properly, so I decided to create my own using Java and the GhostScript binaries.
Video URL: https://www.youtube.com/watch?v=oNTjcRy_eyw