JSON data format JSON data format to convert web data to ebook is like this: { "title" : "Structure and Interpretation of Computer Programs", "authors" : [ "Harold Abelson", "Gerald Jay Sussman", "Julie Sussman" ], "cover_image" : "http://mitpress.mit.edu/sicp/full-text/book/cover.jpg", "content_xpath" : "//div[@class=\"content\"]", # Optional "exclude_xpath" : "//div[@class=\"navigation\"]", # Op