Sumatra PDF is a PDF, ePub, MOBI, CHM, XPS, DjVu, CBZ, CBR reader for Windows

How to remove metadata?

Dear developers,
metadata removal in one click would be a very good feature along with an ability to manually edit all fields. This can make this program really special, as most of pdf programs don’t bother to carefully show ALL metadata, and allow editing it.

Adjusting MetaData is an editing function and SumatraPDF as a reader does not edit, the only mods via pre-release are appending annotations at the end of a pdf