.DEBIAN File

The debian file extension is sometimes used on files related to Debian, or to distinguish documentation for various Linux distributions, when a program is available for several distributions.

For example readme.debian file would describe how to use software in Debian, or some special functions / problem in this distribution.

However it is very likely that you have been looking for Debian packages, which have the deb file extension.

How to open:

Use compatible tools to work with *.debian files.

How to convert:

Probably cannot be converted to anything else.