This retexture may reduce GPU load, because by default Skyrim uses two sets of 100% identical textures with different resolution (512p for world and 1024p for inventory). This mod uses only one set of textures in 2048p (DXT1) for both inventory & "world" model.
All textures of all books and journals combined weight only 125MB.
The world-model now has text you can read. It will be the same for all books and all pages, but it's better than an empty page in my opinion.