.ETD File Extension
File TypeAdobe Reader EBX Transfer Data File
This file is saved in a binary format, which requires a specific program to read its contents.
What is an ETD file?
File used by Adobe Reader, a program that allows users to view .PDF files and read eBooks; contains data that allows Adobe Reader to download an eBook; used to provide a secure mechanism for downloading eBooks without violating copyrights or causing books to be illegally distributed.
ETD files do not contain the actual eBook content. They are only a means to download the eBook to be used by Adobe Reader. They are commonly named ebx.etd and can be opened directly to download eBooks.