On Automatic Conversion from E-born PDF into Accessible EPUB3 and Audio-Embedded HTML5

As a promising method to make digital STEM books in PDF accessible, a new assistive technology to convert inaccessible PDF into accessible digital books in some different-type formats are shown. E-born PDF is initially converted into text-based EPUB3, and then, it is converted into audio-embedded HTML5 with JavaScript (ChattyBook). In the conversion, various local languages can be chosen for reading out STEM contents.