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Video Instructions on How to convert pdf file to iBooks format for free!



Filed under Apple iPad, file conversions

whats is the most accepted digital book format? EPUB?

What is EPUB?


  • The EPUB content standard allows publishers to produce and send a single digital publication file through distribution and offers consumers interoperability between software/hardware for unencrypted reflowable digital books and other publications.

“.epub” Extension

  • “.epub” is the file extension for EPUB reflowable digital books and publications.

EPUB Acronym Soup

  • Container: OCF (Open [OEBPS] Container Format)
    • ZIP-based archive of publication parts
    • Really just one extra file to point to root of publication and a defined directory structure
    • Define mechanism for inclusion of alternate renditions,
    • cryptography, signatures and rights information
    • It’s just ZIP!
  • Markup packaging: OPF (Open Packaging Format)
  • Markup content: OPS (Open Publication Structure); XHTML & DTBook

EPUB is an OPS/OPF publication in an OCF container

What’s the difference between EPUB & PDF?

  • PDF is pre-paginated and not easily re-flowed
  1. “Zoom” a PDF, see the upper left
  2. PDF is a print and print-archive format
  • EPUB content, like XHTML, is re-flowable
  1. If paginated, when zoomed, there will be more “pages”
  2. OPS is a re-flowable “electronic content” format
  3. Adobe’s Digital Editions has adopted EPUB for such content

EPUB validator:


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