Author Archives: Hadrien Gardeur

Validate your OPDS feeds online

Benoît Larroque (from Feedbooks) recently released a major update for his OPDS validator: The source code is available at Online validation is available at This is a major step forward for the OPDS ecosystem since this validator not only includes the Relax NG validation that was previously released, but also check various requirements extracted from […]

Posted in OPDS, Tools | 1 Response

OPDS Catalogs changelog (1.0 to 1.1)

OPDS 1.1 introduces key new features like faceted search/browsing & indirect acquisition. Here's the full changelog: support for facets (Spec) support for indirect acquisition (Spec #1, Spec #2 & Spec #3) recommendations for advanced search (Spec) new rel value for recommendations (Spec) new media parameter to identify navigation/acquisition feeds (Spec) updated Relax NG Schema (Spec) For a […]

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Understanding Acquisition Links

OPDS is all about links: that's how we define where a user can browse, search and acquire publications. Every publication available in an OPDS catalog is required to have at least one acquisition link with: a rel attribute, which indicates the type of acquisition that a client can expect a type attribute, which indicates the […]

Posted in Documentation, Features, OPDS | 1 Response

OPDS 1.1 – Call for Comments

On behalf of the OPDS community, I am thrilled to announce that the draft OPDS 1.1 specification of the BookServer OPDS Catalog is available for review. We are soliciting feedback and comments on this version 1.1 draft. Please submit all critiques or comments to the OPDS mailing list by Monday, 27 June 2011.

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Creating a better OPDS Catalog Root

With more and more tablets available, OPDS clients and catalogs need to evolve and provide a better looking presentation of their catalogs that can fill a 7" to 10" screen. The current crop of OPDS clients on smartphones rely entirely on a navigation based on a series of links (Navigation Feeds) and publications  (Acquisition Feeds). […]

Posted in Documentation, Features, OPDS | 1 Response

Faceted Search & Browsing

The OPDS 1.1 specification introduces a few key features, but from a user perspective, faceted browsing is the major difference with OPDS 1.0. Facets play a key role in how we navigate on websites with a large set of items to browse, for example: Google Search navigation is now mostly designed using facets All top […]

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OPDS 1.1 Announcement

The next revision for OPDS (1.1) will be released this summer and support new features such as faceted search/browsing and indirect acquisition. If you'd like to participate, join the OPDS mailing list at Calls are also scheduled and announced on the mailing list on a regular basis. Meeting notes are available on our wiki: 23 […]

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