First, confirm that the open textbook you want to adapt has a license that allows modification and redistribution on the scale you need.
For this step, you’ll want to identify the format of the open textbook you’d like to modify. Below are examples of the different files types and the platforms needed to read them.
File Type |
How Do I Read It? |
Example |
Adobe Reader | Beyond Lean: Simulation in Practice |
|
HTML | Any internet browser | Human Relations |
EPUB | eBook readers (except Kindle), iPhone and Android apps, Firefox and Chrome add-ons, Google Play books | Foundations of Academic Success: Words of Wisdom |
MOBI (.AZW3) | Kindle eBook | Financial Accounting |
Pressbooks (.WXR) | Any internet browser | Financial Accounting |
OpenStax | Any internet browser | Anatomy and Physiology |
Now that you’ve identified the format type of the open textbook you’d like to edit, you can assess the editability of that format. Use the chart below as a general guide. Click the link for Step 3 to find more about formatting illustrations and mathematical characters and equations and to consult the Format Guides for more details on each format.
Format |
How Editable? |
Recommendation |
Software/Expertise |
Minor changes are easy. Easy to move sections and pages. Impossible to repaginate or make major changes. | Make only minor changes, obtain native file, use Microsoft Word, or copy/paste into another format. |
Moving pages around requires Adobe Acrobat Pro DC ($). | |
HTML | Highly editable. Requires comfort with software tools and markup language. | Requires HTML expertise and/or software. | Requires coding expertise or Adobe Dreamweaver ($). |
EPUB | Highly editable. Requires comfort with software tools. |
Edit as EPUB. | Pressbooks (see below), calibre (no cost); Sigil (no cost). XML-based format. |
MOBI (.AZW3) | Requires conversion to other format. Highly editable. Requires comfort with software. (See EPUB) | Convert into EPUB to edit. (See EPUB) | Many online tools; (See EPUB) |
Pressbooks (.WXR) |
Highly editable. Requires access to and comfort with Pressbooks platform. | Obtain .WXR file. Edit in Pressbooks or export and edit as EPUB. | Requires access to Pressbooks. Access and support via Open Textbook Network; free account also available. |
OpenStax | Editable in OpenStax Connexions Legacy Editor. | Legacy Editor is best for minor changes, like making a custom edition with selected chapters of a larger work. Not recommended for a major edit or rewrite. | Requires Connexions Legacy Editor (no cost). |
Offering multiple formats of your open textbook is a key way to ensure greater access to it. Go to the Accessibility guide to make sure that your OER is meeting all accessibility standards.
This step is applicable if you plan to publish your edited textbook for use beyond your classroom.