.QMK File Extension
File TypeYanCEyDesktop Quickmarks File
What is a QMK file?
File created by YanCEyDesktop, a desktop reader for YanCEyWare eBooks; stores eBook bookmarks, called "quickmarks," that have been created by the user; allows users to save locations within eBooks and quickly navigate to them.
YanCEyDesktop is no longer developed or maintained.