Menekali  Just another IT Blog.

This is a pretty widely known ‘trick’, but here it is for those of us who may not know. This trick will ‘hide’ a .rar (or any compressed file format for that matter) in a jpeg file. The file size of course will be relative to whatever the jpeg image originally is, plus the size of the compressed file. But it can be a cool trick to hide files on your own personal computer.

1. Get your .rar file and put it in the same directory as a jpeg picture (c:\hidden is a good place to put it)
2. Open up a command prompt by clicking Start/Run and typing “cmd” and click ok.
3. In the DOS window, type “cd c:\hidden” to navigate to the folder
4. Type “copy /b input.jpg + input.rar ouput.jpg
   (where input jpeg is the picture you want to show, input.rar is the file you want to hide and output.jpg will be the name of the new combined file)

That’s it! You can double click the new file and it will show it as a picture, BUT… if you open it with winrar, you will see the files contained.