What you need:
- .gif image
- Program to handle RAR archives (they're like zipped folders), like winRAR for Windows
- Something to hide
Throw everything you want to hide (pr0n!) in a RAR. Next, open up a command prompt and enter the following:
copy /B yourpicture.gif+stufftohide.rar whatyouwantthepictobecalled.gif
So if I had a picture called pic, a RAR called hide, and I wanted to call the picture with the hidden folder inside hidden, I would enter the following:
copy /B pic.gif+hide.rar hidden.gif
Make sure you include the path, or it won't work. What we've done here is stick the RAR to the end of the picture. .gif images are read by the computer from the header, and RARs are read from the footer, so whatever program you are using to handle the RARs can unarchive the files from the picture just like a normal RAR.
When you're done, the picture won't look any different than it did before. The only way someone could tell the difference would be to look at the file size (they might think something is off if you have a 2 gig picture).