Jhead is a tool for extracting Exif data from your JPEG files. For example, you can get the exact date and time when the photo was taken; image resolution; device brand, model, etc. Jhead also allows you to modify or edit Exif data of your digital photos and create a new EXIF header. It is an extremely simple yet very efficient. This program developed by Matthias Wandel is entirely free and compatible with all Windows versions.