Don’t forget to save a copy as you go along!.Note: If your image is very large, you may have to play around with the HTML to adjust the size. To add an image, click on the “Insert image” button.A preview of your edited text will appear on the right side of the window. Double click the section/chapter of the text you want to edit.Click on “Edit book” to launch the editor.Download the EPUB version of the open textbook you’d like to edit.CNET offers technical documentation and free software downloads for Sigil.įor additional help, see MobileRead’s Sigil Forum. Using Sigil requires some knowledge of editing HTML.

The best source for help is usually one of the online forums where users exchange information and answer questions. The user instructions provided below are very basic. Both are maintained by volunteer developers, which means that user support is limited. Sigil and calibre are open source software applications that can be downloaded freely from the Web. Almost anyone can edit EPUB files with the help of an eBook editing tool, although some familiarity with hypertext markup language (HTML) is helpful. Editing an EPUBĪn EPUB is essentially a ZIP file containing nested folders with XHTML text, images, Cascading Style Sheets (CSS), embedded fonts, and metadata files. lists many of these tools with crowdsourced reviews. MOBI should first be converted to EPUB, after which the file can then be edited using one of the tools described in this guide. A variety of MOBI to EPUB conversion tools are freely available online.

Both formats are also open standard, which means that they are free and publicly available, although rules exist regarding their usage.ĮPUB and MOBI files can be edited using a number of eBook editing tools. The advantage of EPUB and MOBI is that both formats display reflowable content (the text adjusts to fit the size of the screen on your reading device) as well as fixed-width layout. Amazon’s Kindle uses MOBI, a software package created by the French company Mobipocket, which was bought by Amazon in 2005. Apple’s iBooks, Barnes & Noble’s Nook, Adobe Digital Editions, and Aldiko on Android all support EPUB. EPUB and MOBI are the most common formats for reading eBooks on eReader devices and tablets.

Calibre software user guide