1. Gather the file you wish to hide, and the image file, and place them in a folder. For the sake of this demonstration, I will be using C:\Secret -The image will here by be referred to in all examples as img.jpg and the finished JPEG will be something.jpg -The file will here by be referred to in all examples as Document.txt 2. Add the file/files you will be injecting into the image into a WinRar .rar or .zip. From here on this will be referred to as (secret.rar) 3. Open command prompt by going to Start > Run > cmd 4. In Command Prompt, navigate to the folder where your two files are by typing cd location [ex: cd C:\Secret] 5. Type [copy /b img.jpg + secret.rar something.jpg] (minus the brackets) Congrats, as far as anyone viewing is concerned, this file looks like a JPEG, acts like a JPEG, and is a JPEG, yet it now contains your file. In order to view/extract your file, a) Change the file extension from something.jpg to something.rar, then open and your file is there.