What Happens Next?

1. Our people will contact you with an ftp site and credentials so you can upload your files to our server.

2. We validate your material and if everything passes marketplace standards we will have you up and running in 3 business days.

Note: If your materials do not pass, we will work with you to get them up to par.

Submission of your contact information does not create any type of contractual relationship between you and LibreDigital, nor does it create any obligation on behalf of LibreDigital to provide any service to you. The information you provide will not be shared with anyone outside of LibreDigital without your permission.

Getting Started
  • What Do I Need?

    . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
    Use this checklist to make sure you have everything you need to submit through our process. For more details continue to scroll down.

    ePub File
    An ePub is essentially a zip file containing a series of HTML files, XML files, and any other relevant media files (such as images and fonts) which provide content and functionality. For more on ePubs check our FAQ.

    Don't have an ePub? You can convert your Word, PDF, or inDesign file through our conversion portal.

  • 2. 
    Cover Image
    Both jpgs and pngs are acceptable. Cover images must be less than 600 pixels in their longest dimension.


    The set of basic information used to classify your content in the marketplaces, helping interested readers discover your titles. Includes : eISBN, publisher name, title, description imprint, price, publication date, number of pages, rights, etc.

    If you have further questions please ask our representative upon contact and they will provide you with a template and user guide.


ePub File

Cover Image


  • Apple Approved eBook Aggregator

    The iPad is a huge market, full of new opportunities and daunting challenges. Apple has already sold over eight million iPads, and analysts estimate that more than 13 million iPads will be sold this year. Moreover, a recent study by comScore found that 37 percent of potential iPad owners said it is likely that they will read books on the device.

    There's a lot to know and a lot to do, including converting and formatting files, managing this new distribution channel, and collecting and analyzing sales data. The good news is that you don't have to do it all yourself-at LibreDigital, we have been powering access to the leading marketplaces and devices for 10 years.

    LibreDigital has been selected as an Apple Approved eBook Aggregator for the Apple iBookstore, and for good reason:

  • LibreDigital has already delivered tens of thousands of eBooks to the iBookstore on behalf of some of the largest book publishers in the world.

    A Proven Solution for Publishers

    For publishers, the iPad and the iBookstore represent an incredible market opportunity for your titles. We offer the perfect solution to market and sell your books to millions of consumers. Our proven solution offers:

    • Quick, efficient, and accurate conversion of your content into digital distribution formats with LibreDigital's content transformation services.

    • Secure storage, access and distribution of your digital assets and metadata in our content warehouse.

    • Easy-to-understand, transparent pricing model.

    LibreDigital: helping publishers to sell eBooks in the Apple iBookstore & other Marketplaces

Pricing Model
  • * This pricing is specific to EPUB conversion services and that more information on the publisher compensation associated with the program is listed in the FAQ.

  • Simple - Single column layout like trade books, fewer images and photo inserts (less than 5 per 100 pages), no tables, no textboxes, no sidebars, no equations.

    Medium - Single column, textboxes and blockquote, letter content with signatures, few simple tables, no sidebars, no equations.

    Complex - Multicolumn, complex book layout large number of graphics, large number of sidebars, complex tables with color background, chemical and/or mathematical equations, nested lists, glossary and reference links.

  • What is an ePub file, how is it made?

    EPub is the free, open-source, eBook standard. An ePub is essentially a zip file containing a series of HTML files, XML files, and any other relevant media files (such as images and fonts), which provide content and functionality.

    While there are many methods to create an ePub, the most basic method involves the conversion of a standard text file (such as a PDF, or MS Word document) into HTML, then zipping the resulting files, along with a series of XML files necessary for functionality, into a single package with the. ePub file extension. For more information on the components of an ePub and their functions, see "Anatomy of an ePub."

    What is the minimum amount of files needed for a functioning, valid ePub?

    An ePub needs a bare minimum of five files to function. These include the mimetype, container.xml, OPF, NCX, and at least one HTML file. For more information on the components of an ePub and their functions, see "Anatomy of an ePub."

    My file failed Apple/Amazon/other validation, how do I know what to do to fix it?

  • If a file fails validation, an error log should be provided which gives details on the causes for the failure.

    Will my eBooks be available worldwide?

    LibreDigital makes your titles available in every geography where the iBookstore is available and the publisher has digital rights. The iBookstore is available today in the United States, Canada, the UK, Australia, Germany, and France.

    Can I use my own fonts in the ePub?

    Custom fonts can be used in an ePub using the CSS @Font declaration.

    Why are some letters/html characters not displaying correctly?

    While most special characters are supported by the ePub format, not all characters are necessarily supported by all reading devices/software. Most reading devices support ASCII characters, mathematic symbols, and modified Latin characters.

  • Can I use colored backgrounds, or text?

    Colored backgrounds and colored text can both be used in ePubs through CSS formatting.

    Can text be displayed over an image?

    Text can be overlaid on an image using CSS positioning properties.

    Can images be centered, justified, or arranged similar to in a PDF file?

    It is possible to adjust the alignment of images on a page within an ePub, however, due to the reflowable nature of content in an ePub, it is extremely difficult to produce an ePub that looks and behaves exactly like a PDF. Currently, the only reading device that supports "fixed layout" ePubs is Apple's iPad.

    Can text be forced to flow around an image?

    Unfortunately, the current ePub standard does not support floating HTML elements that would be necessary to make such formatting possible.

  • Can I add video and audio to an ePub?

    The ePub format does support embedded video and audio media. However, not all reading devices support the playback of such media.

    How do I edit an ePub text, image, other?

    Since an ePub is really just a zip file, changing the file extension from. ePub to .zip will allow you to open it with any zip extraction tool. Once the file is unzipped, you can use your favorite text or image editor to make any necessary changes.

    Please note that when zipping the files back up into an ePub, the book will not function properly unless the mimetype file is the first file to be zipped (this must be the first file that the reader sees in order to interpret what type of file it is). Therefore, the best procedure for zipping an ePub is to zip the mimetype first, then drop the rest of the files for the ePub into the produced zip file. Then change the file extension from .zip to .ePub.

    What creates the links in Adobe Digital Editions (ADE)?

  • The NCX file creates the links in the navigation pane in ADE.

    Why can't the nook, kindle, etc. display the multi-level spine menu, or other elements like the other devices - what are the differences?

    Every reading device has it's own way of creating navigation, which is, in most cases, dependent upon the contents of the NCX file. The multi-level spine menu is a feature that is specific to Adobe Digital Editions, while other readers have their own interpretations of this file. Some devices create a separate Table of Contents, some create a spine-type navigation pane, and others create a drop down menu. This is not something that is specifically controlled by the ePub; rather, it is controlled by the device.

    Can I suppress content, or just display a sample of the content without creating additional separate files?

    Content displayed in an ePub is controlled by the "spine" section of the OPF. If one wishes to suppress content in an ePub, they would simply need to remove the relevant entries from this section. Additionally, since content in ePubs is typically broken up into separate HTML files by chapter or section, it would only be necessary to include the desired sections' HTML files in the ePub.

  • What is the difference between a Kindle file and an ePub?

    The Kindle reader actually uses a proprietary version of the mobipocket file format.

    What are all of the current eBook formats?

    While there are dozens of different eBook formats, the majority of these are proprietary formats used by devices that are falling out of common use. Currently the most widely accepted and used eBook formats that are compatible with the most popular and widely used e-readers are ePub, mobipocket, and PDF.

    What is a "fixed-format" ePub, and why does it look strange in ADE?

    A fixed-format ePub is an ePub in which the text does not reflow. These types of ePubs are specifically designed to look exactly like their respective print-editions. Because of this, the fixed-format ePub lends itself well to children's books and other similarly image-heavy books that require very specific formatting.

    Currently, the Apple iPad, iPhone, and iPod Touch running iOS 4,2 or higher and the latest version of iBooks are the only devices that support fixed-format ePubs.

  • Can an image be hyperlinked?

    Unfortunately, the ePub format does not currently support hyperlinking of images.

    I have a complex table. What's the best way to have it displayed so that it's understandable and legible?

    Due to small screen sizes on most e-readers, table can be problematic. The general rule is to keep tables less than 3 columns in size. If a table must be larger, a high-resolution image of the table should be used in place of live text, to ensure that the entire table displays on the page.

    Can drop caps be used?

    Drop caps are not currently supported in the ePub format.

    Some text is not showing up when doing a search. Why?

    Most likely, if text is not showing up when you search it, it is because the text you are searching actually an image, and not actual "live" text.

  • How is the new ePub standard different from the current one? Will ePubs support HTML 5?

    EPub standards, as set by the International Digital Publishing Forum (IDPF), are constantly changing. The newest iteration of the ePub standard, EPUB 3 will add new functionality, including support for HTML5, CSS3, SVG, scripting, and text-to-speech, as well as more robust font handling capabilities.

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