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I have a math textbook PDF that I want to convert to EPUB. It has diagrams and math writing, and it needs to be OCR’ed extremely well. Is this possible? How can I do this?
Calibre can convert between various e book formats. However, because pdf was designed for print and the visual appearance of a pdf may not reflect its internal structure converting from pdf isn’t super reliable. One pdf from a particular publisher/source/process may convert beautifully while another does not. Calibre is both free and cross platform. While it may not work, at worst you are out the time and effort to try it. At best, you get the conversion you need/want.