Matt RaibleMatt Raible is a Web Architecture Consultant specializing in open source frameworks.

The JHipster Mini-Book The JHipster Mini-Book is a guide to getting started with hip technologies today: AngularJS, Bootstrap, and Spring Boot. All of these frameworks are wrapped up in an easy-to-use project called JHipster.

This book shows you how to build an app with JHipster, and guides you through the plethora of tools, techniques and options you can use. Furthermore, it explains the UI and API building blocks so you understand the underpinnings of your great application.

For book updates, follow @jhipster-book on Twitter.


Over 10 years ago, I wrote my first blog post. Since then, I've authored books, had kids, traveled the world, found Trish and blogged about it all.

Customizing an Asciidoctor PDF so it looks like an InfoQ Mini-Book

The JHipster Mini-Book Earlier this month, I finished the rough draft of the JHipster Mini-Book. Since then, I've been working with editors to get it ready for production. I've also been working with InfoQ to try and make the generated PDF look like their current mini-books. I wrote the book using Asciidoctor and I'm using Gradle to generate HTML5, PDF and EPUB versions.

After doing some research on Asciidoctor PDF themes I created an issue in the asciidoctor-pdf project. My reason for was to see if it was possible to customize certain sections of the generated PDF. The main issues I've had in making the PDF look like an InfoQ mini-book are the following:

  1. The colophon is not aligned to the bottom of the page.
  2. The title page (first one after the cover) and colophon pages should be merged.
  3. The dedication and acknowledgement headers are not center-aligned and underlined like InfoQ's format.
  4. The main sections don't have whole-page delimiters.
  5. The table of contents comes right after the title page, rather than after the dedication and acknowledgement.

After thinking about this a bit more, I thought of a few possible workarounds.

  1. I could add a number of line breaks at the beginning of the page to push everything down to the bottom.
  2. We could delete the title page (with Preview on a Mac or another PDF editor).
  3. We could create new PDF pages that have InfoQ's headers and my content. Then, using a PDF editor, we could delete pages and put the new ones in their place.
  4. There might be a way to have no text in a section's title (so it doesn't show up at the top of a page) and do the same copy/paste of an InfoQ section-delimiting page (with large Part One text) before the section. The hard part here might be lining up the table of contents with page numbers.
  5. Move pages around in the PDF and renumber pages using a PDF editor.

Even if all these workarounds are possible, this will only work for the PDF. InfoQ has asked me to make similar header customizations for the EPUB/MOBI versions.

I looked at the PDF theming guide and it looks like many things are customizable, but they're global customizations, not per-section customizations. Dedication, Acknowledgement, Preface, and Chapter Titles all live on the same level (level 2). I believe it's possible to customize how they all look, but I haven't figured out how to change an individual title.

The only thing I can think of beyond these workarounds are 1) hiring someone to create a custom theme for InfoQ or 2) forking the project and trying to make customizations to the source code myself.

I haven't had any feedback from the Asciidoctor team, so I'm posting this here to try and reach a wider audience. If you've authored a book in Asciidoctor, did you customize the output to fit your publisher's desired format, or did you just take the out as-is and publish it?

Posted in Open Source at Oct 22 2015, 02:15:21 PM MDT 2 Comments

The good news is that these customizations are possible. At the moment, it does require extending the converter and writing some code. But that approach is very much in the philosophy and spirit of the project. It should not be necessary to fork the project, though you can certainly make a wrapper.

I've responded in detail on the following issue thread:

Posted by Dan Allen on October 22, 2015 at 05:36 PM MDT #

[Trackback] Last week, I wrote about customizing an Asciidoctor PDF so it looks like an InfoQ Mini-Book . Shortly after writing that blog post, Dan Allen responded to my questions and showed me how to customize Asciidoctor's PDF generation . I ended up using...

Posted by Raible Designs on October 28, 2015 at 10:48 AM MDT #

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