A DFTI file is a document saved by FlexiWrite, a word processor designed to enhance the on-screen reading experience of text files. It may contain text, images, and multiple document sections. DFTI files store document data in FlexiWrite's proprietary "Dynamic Formatted Text and Images" (DFTI) format.
DFTI file open in FlexiWrite
The DFTI file is the main file type associated with FlexiWrite. It is created when you save your document and can be closed and opened at a later time. The document is used by FlexiWrite similarly to how Word uses the .DOCX and .DOC files.
FlexiWrite is available to download for free as a native OS X application for Macs and a Java archive (.JAR) version is available for Windows.