Being able to edit the information about a book (Personal only)#58

Being able to edit the page count for a book would be great. Of couse this would be a personal edit, since not all the books end exactly at the last page, but do so 20 pages earlier. If page tracker is added this would be nice to get a better idea of how far you are.
Also being able to edit the format would be cool.

For a clearer idea of what i mean, look at the app “Bookshelf- Your virtual library” on the Play Store.