EPUB Conversion Guidelines

From MPublishing

Revision as of 16:20, 6 August 2011

Publishing in EPUB Format: EPUB Conversion Guidelines

EPUB is a free, open ebook standard for digital publishing developed by the International Digital Publishing Forum, designed for reflowable content. As of 2011, it is the most widely supported vendor-independent XML-based e-book format. Software for reading EPUBs include Adobe Digital Editions, Google Books, iBooks, Aldiko (an Android mobile platform), plug-ins for Internet browsers, etc; e-readers include the iPad, Nook, Sony Reader, among others.

Vendors

At the University of Michigan, you should check with the on-campus procurement office to find out which EPUB vendors the university has contracts with, if they apply to you, etc. For others, there are a number of vendors who will do conversion work for you:

• Bibliovault: a scholarly book repository launched by the University of Chicago Press; converts PDFs to reflowable formats, including EPUB
• Ingram Book Company
  • Ingram Digital/Core Source: digitization and conversion services, including EPUB
• Digital Divide Data: converts from common digital publishing formats such as PDF, Quark, InDesign, into EPUB or Kindle formats; they also can scan paper to digital, including cradle-scanning of fragile or rare material
• SunTec: India-based company converts to EPUB from PDF, Word, Quark, InDesign, XML, HTML

This is not a complete list; there are many other vendors who provide EPUB conversion.

What vendors expect for delivery

Vendors usually use web-ready or print-ready PDFs of content, but some will accept XML, HTML or Word documents. There are a number of vendors out there who will scan paper or cloth books to PDFs (Aptara, Trigonix) if the text is not yet digital, though many EPUB vendors also provide this service.

You should also determine the complexity of the text you wish to convert. Prices may vary depending on the file format (raster vs. vector), number of images, number of pages, etc. An image-heavy item will be more costly and time-consuming. Letting the vendor know these details beforehand will help them give you an accurate quote for the work; some may have price quotes based on format and a per-image fee to help you better determine the cost of the conversion project.

Many companies outsource the conversion work (such as Ingram)--be prepared for questions on the content that come to you from third parties via your original source. Inevitably, the vendor will encounter errors in the PDFs, corrupt files, characters that convert improperly, or item such as mathematical equations, figures, graphs, and tables that don’t lend themselves to reflowing. Some things will have to be re-scanned, converted from another format, or the offending item may have to be removed--or it may not be able to be converted to EPUB at all.

Before you pay: EPUB Quality Check, etc.

Typically, EPUB conversion (from already digital text) is about a four-week turnaround, depending on when it is needed, how much you are willing to pay, and contract negotiation. Scanning from paper will take additional time, and you may want to proof/review the resulting tiffs or PDFs before they are, in turn, converted to EPUB.

There is an open-source tool for EPUB file validation: http://code.google.com/p/epubcheck/. However, validation is usually handled by the vendors themselves and has been checked for quality multiple times before delivery. The best way to QC the finished files is to view them the way a user would: open them in Adobe Digital Editions, page through to make sure there are no conversion errors, botched images, etc.; view them on an e-reader and/or Internet browser. E-readers that read EPUBs include the B&N Nook, Android devices, iPhone, iPad, iPod Touch, Sony Reader, Kobo eReader, and a variety of other lesser-known devices (such as the Linux-run BeBook). Software for viewing EPUBs on a computer include:

• Adobe Digital Editions (Windows, Mac OS X)
• Aldiko (Android)
• Calibre (Windows, Mac OS X, Linux)
• EPUBReader (Mozilla Firefox add-on)
• Google Books (Web, Android)
• iBook (iOS)

We welcome suggestions for this page from others who have worked with vendors for EPUB creation.