While full modern feature films are rarely hosted for free download due to copyright, you can find unique production artifacts and related media: Movie Novelizations
Unless, that is, you know where to dig. You need to go to cloudy with a chance of meatballs archiveorg
You can find "Cloudy with a Chance of Meatballs" on Archive.org. The book is available in various formats, including: While full modern feature films are rarely hosted