How to dedrm calibre2/20/2023 ![]() ![]() While DRM is all about controlling the user open source software is about empowering the user. Open source software and DRM are a clash of principles. They say: if Calibre were to support opening or viewing DRM files it could be trivially modified to be used as a tool for DRM removal which is illegal under today's laws. That's why Calibre developers don't like DRM. So if you have an Amazon Kindle and buy a EPUB book sold by Barnes and Nobles, you should know that if that e-book has DRM you will not be able to read it on your Kindle. People are often surprised that an e-book they have bought in a particular format cannot be converted to another format if the e-book has DRM. These restrictions prevent you from reformating the e-book to your liking, including making stylistic changes like adjusting the font sizes, although there is software that empowers you to do such things for non DRM books. ![]() Often people who buy books with DRM are unaware of the extent of these restrictions. DRM limits what you can do with e-books you have "bought". When you buy an e-book with DRM you don't really own it but just have a permission to use it in a manner dictated to you by the seller. DRM (Digital rights management) is a technology for access control that is used by ebook publishers and inhibits uses of ebooks that were not desired or foreseen by the content provider. ![]()
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