Face it. Everyone has something on their computer that they don't want anyone else to see. It could be love letters, pictures of an ex, military secrets, etc. It's not any of my business what you keep on your computer, but it is my business to teach you how to hide it.
Today, I will show you how to hide archived files in an image. You will need two things: the archive you want to hide and an image. Any image will do (just make sure that it's not something that you would want to hide). Next, you need to compress the files to be hidden into an archive. Any format will do, but I will use .zip for tutorial purposes. Then you must put the image and the archive into the same folder (I recommend dropping them in the root of the C drive for convenience).
To put the files together, follow these steps:
1) Open the command prompt. (Start>Run>CMD)
2) Type "cd c:\" then hit Enter(I used the root folder of the C drive. If you used a different folder, you'll have to type out the entire path)
3) Type "copy /b image.jpg + archive.zip final.jpg" (image.jpg is the name of your original image, archive.zip is the name of your archive, final.jpg is the name of your output file. The final will always have the same extension as the image.)
The output file will be an image file and if you double click it, it will open as an image. However, if you open it with an archive utility (7zip, winrar, etc.) it will open as an archive and you can see your hidden files.
Stay sneaky, my friends.