The OPS folder contains the text of the book, plus any fonts, images or audio/visual materials contained within the book.
What’s in an ePUB?: The OPF File
The OPF file is located within the OPS folder. 'OPF' stands for Open Package Format. It's essentially an XML file, although it has the file extension .opf...
What’s in an ePUB?: The Root Directory
An introductory look into the first level of an ePUB file
Responsive Design for Ebooks
Responsive design is a flexible way to display websites and other HTML documents using specific CSS practices.
Converting EPUB2 files to EPUB3, presented by Joshua Tallent
In this video, Joshua Tallent, Firebrand’s Chief eBook Architect, will walk you through the process for upgrading your EPUB2 files into the EPUB3 format.
Open Source Ebook Production, presented by David Ward
If EPUB is an open standard, why aren’t more people paying attention to the huge number of open source tools available to ebook developers?
Fixed Layout Vs. Reflowable EPUBs
When deciding which format is best for your book, here are some questions that should help you make your decision.
Font Embedding in Ebooks
Font expert Champagne Choquer discusses general font guidelines and reveals best practices so that you can take your ebook typography to the next level.
Prioritizing Ebook Production: Which books should you convert first?
At eBOUND, we look forward to a day when all books will be available at the click of a button, no matter where you are, for reading on any device. But for...
How to Change the ISBN in Your OPF File
One of the most common mistakes that prevents EPUB validation with a retailer is a mismatched ISBN. This means your 13-digit eISBN does not match your eISBN...