New: Use Thema Subject Categories to Classify your Book!

Pressbooks now lets you categorize your book using Thema, a new global subject classification system for books. These subject categories will appear on the homepage of your webbook. For users on a hosted Pressbooks instance, these categories will help classify your book on your network’s catalog.

Thema subject categories are free, and are already being used internationally. They have also been adopted by public libraries, publishers, retailers, and other members of the book-trade. Thema can be used alongside BISAC classification, which remains available for use on Pressbooks. The goal of Thema is to reduce the duplication of effort by providing a single scheme for broad international use.

According to EDItEUR, the international group coordinating development of the standards infrastructure for electronic commerce in the book, e-book, and serials sectors, “Thema aims to enhance the merchandising, discoverability, and potential sales of books by simplifying the communication of accurate and detailed subject information across international markets and reducing the need to maintain numerous national subject schemes.”

Thema subject categories are available in 15 languages: Arabic, Danish, English, Spanish, French, German, Hungarian, Italian, Japanese, Lithuanian, Norwegian, Polish, Portuguese, Swedish, and Turkish. Pressbooks’ initial release of this feature only includes the English labels, however a future release will include labels in the remaining languages.

To apply a Thema subject category to your book, simply follow these instructions:

  1. Go to the Book Information page from your dashboard.
  2. Scroll down to the “Subject(s)” field.
  3. Enter a “Primary Subject” using the dropdown list provided.
  1. Enter “Additional Subject(s)” if applicable.
  2. Save your changes.
  3. View the homepage of your webbook and your network catalog (if applicable).

If you’re not sure what subject category to choose for your book, you can follow these guidelines to filter through the comprehensive list.

Thema categories are still evolving, so if you find that your book is hard to classify, let EDItEUR know!