28 Open Textbook Formats
You will notice that open textbooks are available in a number of different technical formats, some of which may not be familiar to you. The reason for this is because research into student preferences around textbook formats shows that students want flexibility. You may have students who prefer physical textbooks, while others will want their textbook delivered to their favourite eReader software. Still others prefer the familiarity of PDF or a website.
Here is a brief guide to the different, common types of open textbooks document formats.
ePub
ePub is a standard format for ebooks. You will need an eReader to read ePub files. eReaders are available as stand alone devices (such as a Nook or Kobo reader) and as software packages that you can install on your PC, Mac, tablet or mobile phone.
There are a number of eReaders available for free, and many have features such as cloud syncing, which allows you to read your book on a tablet, PC and phone and keep the book in sync. Many also offer annotation and note-taking capabilities.
ePub is superior to PDF in that the text in ePub readers can reflow based on the size of the device you are reading on, giving you a smooth side to side reading experience. You can also resize the text.
Use ePub if you have a Nook, Kobo or other dedicated eReading device or have downloaded and installed eReader software on your tablet, PC, or mobile device. Note that Kindle does not support ePub. Instead you will want to use the .mobi format (see below).
Recommended free eReader software & devices compatible with ePub
Software |
Supported Platforms |
Available as eReader device? |
Requires Registration? |
| Adobe Digital Editions | PC, Mac, Android, iOS | No. Software only | No |
| Kobo | PC, Mac, Android, iOS | Yes | Yes |
| Google Play Books | Android, iOS | No | Yes – Google account |
| iBooks | iOS | No | Yes |
| blio | PC, Android, iOS | No | Yes |
| Bluefire | PC, Android, iOS | No | Yes |
These are just a few of the many ePub readers available. Wikipedia has an extensive comparison list of eReaders.
MOBI
Students should choose the MOBI format if they have an Amazon Kindle or use the Amazon Kindle software. You do not need to have a Kindle device to use the Kindle software. Kindle apps and software are available for download on Mac, PC, Android, BlackBerry, Windows OS and iOS.
Website/HTML
Wherever possible, Queen’s will make a web version of the textbook available that can be accessed with a standard web browser. An HTML website is a good format to use to distribute your textbook to students as it is a universal format that does not require any additional software beyond a web browser. HTML is also a good format to distribute your textbook in if you want others to be able to edit or customize your book. If possible, you can create a zip file of your HTML documents and make those available for other instructors to download, edit and host on their own websites.
PDF is a common file format that r