How to Hide Data Behind Images
Steganography is the art of hiding messages in such a way that no one, apart from the sender and receiver, suspects the existence of the hidden data. In this tutorial, you’ll learn a neat trick using which you can hide whatever data you want behind an image of your choice.
How to hide data inside images?
- Create a folder. Name it anything you wish, say
hide
. - Now put anything and everything you want to hide in this folder. Text files, other images, executables - anything. Also, put the image behind which you want to hide the files in the same directory, say “image.jpg”.
- Now we need to archive this folder. You can use your choice of compression tool for this (I recommend the free and open-source 7-zip). So now we have a zip file
hide.zip
containing all of the data we want to hide behind an image. - You should have your image, say
image.jpg
(inside of which we’ll hide our data) in the same directory ashide.zip
(next to it). - Now simply open up the command prompt and move to the folder where
image.jpg
andhide.zip
are located using thecd
command:cd PATH
For example:cd C:\Folder cd desktop
- Now we type in the following command:
copy /b image.jpg + hide.zip output.jpg
Also Read: How to Make an Invisible File
After running this command, you should see an
output.jpg
in the folder and if you look closely, you’ll notice that it’s size has increased by approximately the size of the archive. Our data is now hidden behind the image.output.jpg
behaves like a normal image file, but you can also view the hidden data by opening the file with your compression tool, say 7-zip (Right click -> Open with -> 7-zip).And that’s It! Now you can send this image to anyone, what others will see is just a regular image but if the recipient knows, they will be able to access the secret information privately. You can also do this for other file types as well such as .mp3, .wmv, .txt etc.
Also Read: Lock a Folder With Password Using Free Folder Protector
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