FlippingBook3D PDF to Text Converter (Freeware) - Version 2.5 FlippingBook3D PDF to text Converter is a freeware helps you convert PDF to text file. Why don't you make more text files if the PDF is just full of text content and rare of images? The same content, however txt format occupy less space and size than PDF. And many devices includes all level of mobiles devices all support TXT format but not all support PDF.