deJpeg

This program lets you extract jpeg files from any files, such as data files, Microsoft Word (*.doc, *.docx), exe files and so on. deJpeg doesn't differ the type of input file, it detects jpeg files by inner signatures. Seems to be easy, but there are many kinds of jpeg files really: simple jpegs, Exif jpegs, jpeg files modified by Photoshop and other graphic editors.