I am designing a new app which is used to convert PDF, DOC, DOCX and XLS format into the EPUB format.

Is there any library I could use for this?

3 Answers 3


You can check out the LEADTOOLS Documents Converter SDK which has support for converting to and from the following Document Formats:

  • Adobe Acrobat PDF and PDF/A
  • Microsoft Office DOC/DOCX, XLS/XLSX, PPT/PPTX, PST, EML, MSG, and XPS formats
  • CAD formats such as DXF, DWG, and DWF
  • TIFF, JPEG, PNG, EXIF, BMP, and hundreds more raster image formats using OCR
  • Plain Text, RTF, HTML, MOBI, ePUB

Disclaimer: I am an employee of this library


While I can't vouch for it meeting all of your needs, Google Drive/Apps has recently added support for epub files.


Not sure if calibre has a library underneath, but it might be a good start as it is opensource and already allows to convert many formats to epub.

Link: Calibre / Github project

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