Ebook Conversion for US Authors

US authors publishing through Amazon KDP need both EPUB and PDF formats. KDP accepts EPUB (or DOCX) for Kindle ebooks and PDF for paperback/hardcover interiors. If you've formatted your book as an EPUB and need a quick PDF proof, or vice versa, this converter handles the job instantly.

For KDP paperback submissions, Amazon requires a print-ready PDF with specific settings: PDF/X-1a or PDF/A compliance, embedded fonts, CMYK colour space, and 300 DPI images. Our free converter creates a basic text PDF suitable for proofing and review — for publication-ready PDFs, professional formatting ensures KDP acceptance on the first upload.

IngramSpark (used for wide distribution to Barnes & Noble, bookshops, and libraries) has even stricter PDF requirements than KDP. While our free converter is excellent for quick text conversion and proofing, IngramSpark submissions should use professionally formatted files to avoid rejection.

The US ebook market is dominated by Amazon Kindle (which uses a proprietary format converted from EPUB) and Apple Books (which uses standard EPUB). If you have a PDF manuscript and want to distribute as an ebook, converting PDF to EPUB gives you a starting point — though professional EPUB formatting will produce a significantly better reading experience.

For US authors, both formats are essential: EPUB for Kindle Direct Publishing, Apple Books, Kobo, Barnes & Noble Press, and other ebook retailers; PDF for print-on-demand through KDP Print, IngramSpark, and Lulu. Most successful self-published authors maintain both formats and update them simultaneously.