title_body: Is it possible to share annotations between a Kobo Glo and Calibre Viewer? Is it possible to share annotations between a Kobo device (I own a Glo, but it should not matter I think) and Calibre internal viewer?
  
  I'm aware that there is a plugin for Calibre that can export annotations out of a Kobo and save them as separate text files, but that's not really what I'm looking for; what I'm interested in would be some way to highlight some text and add comments on the Kobo and display these annotations also when opening the book in Calibre Viewer (of course after a synchronization) and vice-versa.
  
  Is that possible?
upvoted_answer: Apparently Calibre does already have the capability to capture the annotations from Kobo.
  
  When Kobo is attached to your computer, the "Send to Device" logo appears as a menu option in Calibre.  If you right click on that logo, the bottom menu option is "Fetch annotations (experimental)".  One caution however is that Calibre seems to fetch the annotations for ALL books that are on Kobo (rather than just the book that is currently highlighted), and then copies the annotations for each book on KOBO and appends it to the comments metadata of the corresponding book in Calibre.  All annotations are copied including any auto-generated bookmarks that identify how much of the book has been read on Kobo.