Pressbooks is a book content management system which allows people to publish webbooks and produce exports in a variety of formats, including EPUB, accessible PDF, print-ready PDF, and various XML flavours. Pressbooks is built on top of WordPress Multisite, and makes significant changes to:

• admin interface (customized for books and other structured documents, like magazines, journals, reports, etc.);
• web presentation layer (again, customized for books and structured documents); and
• export routines.

Pressbooks is free software, released under the GPL v3.0 or later license.

Our webbooks and EPUB/PDF exports are all driven by HTML + CSS. XML outputs have no styling.

Pressbooks works with PHP 7.4 and WordPress 5.9.3. Lower versions are not supported.

Pressbooks is not for use on an existing blog. Instead it should be used with a fresh, multisite WordPress installation.

To install Pressbooks on your site, download the latest release and follow our installation instructions.

You may want to try Pressbooks.com before deciding whether or not you wish to host and maintain your own instance of Pressbooks. We can also host and maintain an instance of Pressbooks for you.

Developers who are interested in contributing to our project should consult our "Contributing" guidelines and the developer guides published on our documentation website.

The Pressbooks plugin is supplied "as is" and all use is at your own risk.