In contrast to other free online PDFs to EPUB converters, Convertio has a pretty reliable quality with more accuracy and attention to formatting.
Best of all, it is web-based and majorly online, so you don’t have to worry about stressful installations. Using this service, you can convert almost any format to another format you need, and in this case, PDF to EPUB. CloudConvert remains one of the most popular tools for various file conversions, also extending to other services such as file optimization and merging. If you are seeking how to convert PDF to EPUB without losing format, this is a tool you should look forward to using. What is the difference between PDF and EPUB? Note to calibre developers: Why did you not use standard image manipulation libraries? Why choose a heavy GUI-oriented framework (like Qt) for simple image operations? Quite a great package (calibre) with such a poor decision, in my opinion. If you can live with unmodified images from the original book that you are converting and don't need to compress/resize those images, then you're lucky, since you can avoid using Qt/X11. In short, the conversion tool only uses Qt for image manipulation operations. usr/lib/calibre/calibre/ebooks/conversion/plugins/mobi_output.py Basically, I removed Qt imports and fixed the remaining errors in the scripts by making those functions empty (or throw an exception) in these 2 files (in my case): /usr/lib/calibre/calibre/utils/img.py The last part was the most painful, since it involved modifying some of the python util scripts, which use Qt (which then requires some X11 libs) for image manipulation and we want to avoid that on a server/headless machine. I also had to specify a command line option -mobi-keep-original-images, since I wanted to convert epub to mobi format using: ebook-convert ~/test.epub ~/test.mobi -mobi-keep-original-images Installing some missing python modules (which you figure out by running the convert command ebook-convert inputfile outputfile), in my case: python3-msgpack The steps involved extracting these directories from the calibre package (deb, rpm, whatever): /usr/bin/ebook-convert I've managed to cut out ebook-convert from Calibre (which, for who knows what reasons, requires Qt for image manipulation) and got a command-line only interface for it, to be able to use the tool on a headless/server machine.
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