Binary package “calibre-bin” in ubuntu lunar

powerful and easy to use e-book manager (binary plugins)

 Calibre is a complete e-library solution. It includes library management,
 format conversion, news feeds to e-book conversion, e-book viewer and editor,
 and e-book reader sync features.
 .
 This package contains the compiled architecture dependent plugins, the main
 package is called 'calibre'.