Feature request: Filter by file type in Gnome Books
The Humble Book Bundles supply ePub and PDF files, and often Mobi as well. As I don't have a physical ebook reader but may get one in the future then I've downloaded all versions. The ePubs are in a directory and the duplicate Mobi/PDF are below them.
Gnome Books appears to use Tracker to find ebooks. This means that it finds the duplicates, but doesn't detect them as duplicates. This results in multiple copies of each book, some of which won't load correctly because Gnome Books appears not to support Mobi (despite listing them) and gives an "Oooops, unable to load - you're using a preview" message.
To reduce the duplicates, it would be helpful to have an ebook type filter in Gnome Books.