JustViewPicture is simple, easy to use and fast image viewer. You won't be blocked to open folder if there are thousand of image files in the folder. JustViewPicture uses multithread technology to display image in foreground and scan folder/file in background. You could view and scan image are in parallel. JustViewPicture also supports to jump next/previous folder by wheel mouse/hotkey, full screen display, drag image file/folder immediately.