Opensource pdf, djvu, xps and cbz file viewer/reader.* Outline* Bookmarks* Page navigation by screen taps + Tap Zones + Key binding* Text selection* Custom zoom* Custom border crop* Portrait/landscape orientation* Support different navigation patterns inside page (left to right, right to left)* External Dictionaries support* Built-in file manager with recently opened file viewPlease report any bug or feature request to issue lists on project site or by email。