Adobe Reader is the widely proliferated industry standard application for viewing and printing Adobe PDF documents. However, Reader supports a variety of workflows beyond consuming eBooks and other commercially published content, including interactive forms, digital signatures, and other knowledge worker workflows that involve integration with other office applications including Acrobat and server solutions such as Adobe LiveCycle® software. As a result, the power, complexity, and size of Reader are not optimized for consumer-level eBook reading.
Acrobat is the broadly adopted solution for creating and manipulating Adobe PDF documents. Sharing a common software architecture with Reader, Acrobat adds powerful capabilities for document generation and collaboration.
Adobe Digital Editions is a focused, lightweight solution (4MB download on Windows®). It extends the eBook capabilities integrated with previous versions of Reader and Acrobat and delivers a simplified, content-centric, consumer-friendly user interface. It is distributed as a web-based RIA, helping to ensure that users always have the current version of the software.
Digital Editions supports the Sony® Reader. Visit the "Transferring items to a Sony® Reader" area of Adobe Digital Editions Help for more information on using the Sony® Reader with Digital Editions.
Adobe is actively working to support other platforms and devices. Further developments will be announced when available.
Some digital publications that you purchase online or check out from a library may contain digital rights management (DRM) protection that restricts the items from being shared with others. In the past, this could limit the ability to read your items on additional computers owned by you. It could even prevent you from moving your items when you bought a new computer.
Digital Editions helps ensure that your eBooks and other digital publications are not "locked" on one computer — they are assigned to you through your Adobe ID. Digital Editions also adds support for the next generation of mobile devices.
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Some users have eBooks and other digital publications on their computers that have been licensed with Acrobat, Reader, or earlier versions of Digital Editions using Easy Activation. These items cannot be moved to a new computer and are, for all intents and purposes, locked inside a particular computer. To solve this problem, Digital Editions allows you to convert items to a license associated with a named account. This allows digital content to be backed up, copied, and read on other computers. All items subsequently downloaded to an authorized computer with Digital Editions are licensed to the named account.
Adobe wants your eBook experience to be as easy and seamless as possible. Naturally, this includes protecting your eBooks from being lost or damaged. This is one of the key reasons that Digital Editions features content portability.
This feature also enables a new breed of mobile devices designed to be used with Digital Editions. Furthermore, Digital Editions will be introducing new social features in the future that will enhance the use and enjoyment of the user's eBooks, such as sharing annotations and reading lists. Use of these social features will require that you have a personal identifier, even if you only use one computer.
Once you authorize your computer with Digital Editions, the application looks for eBooks already on the computer and converts copies of the items to a new named account license. You can then transfer those eBooks to other computers. If you have eBooks on multiple computers, you need to authorize each one with Digital Editions prior to transferring eBooks between them.
Important: Digital Editions converts eBooks that have been purchased with Acrobat, Reader, or earlier versions of Digital Editions. However, items licensed using Easy Activation can only be converted on the same computer with which they were originally purchased. If you are contemplating buying a new computer, changing the hard drive, or upgrading the operating system, consider keeping your old computer intact unless you bought all of your books with Acrobat or Reader using Named Activation.
Digital Editions has an “Authorize this computer” menu item that you can use after initial installation.
Important: If you authorize your computer with an Adobe ID, then it will always be associated with that Adobe ID. If you do not, the account is "anonymous". If you "anonymously" activate two computers, then there are two separate anonymous accounts, which cannot be merged. Thus, the eBooks on one computer can be upgraded to "belong" to a specific Adobe ID, but the eBooks on the other cannot. If you authorize the second computer with your Adobe ID, any subsequent purchases on it are associated with that ID and transferable to any computer authorized with that ID. However, the books that were purchased on the second computer prior to being activated are forever locked to that computer.
The procedure for getting data from Windows XP to Windows Vista during an upgrade is posted on Microsoft's Windows XP site.
Refer to the TechNote for the transfer process for Digital Editions.
EPUB is the file extension of an XML format for reflowable digital books and publications. It consists of three open standards — Open Publication Structure (OPS), Open Packaging Format (OPF), and Open Container Format (OCF) — produced by the International Digital Publishing Forum (IDPF). EPUB 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. In addition, EPUB includes capabilities for scalable vector graphics (SVG) and structured tables of contents, and it incorporates compatibility with the related DAIST DTBook standard for accessible content.
For the latest on EPUB specifications and publishing guidelines, visit the Digital Publishing Technology Center.