This is an incredibly useful feature especially to those referencing material for use elsewhere as it’s the case for those writing academic papers. Bluefire Reader then goes a step further by allowing users to export these annotations to a plain text file. The reader allows you to annotate EPUBs by not only highlighting text but also adding notes to the content. The freeware Bluefire Reader for Windows is one such exception. Nevertheless, there are always some exceptions to the rule. As a matter of fact, annotating EPUBs in any way is generally less common compared to the flexibility that the PDF format offers. Most EPUB readers don’t usually have the ability to highlight text as it’s the case with PDFs.