How to hide text data inside picture file

step 1. open command prompt
.
2. Type cd\ press enter

3. in which image is this you will have to bring in your specified path like
if you are writting command in c:\
then bring image file here (In C Drive).

4. Type Notepad Dunya.jpg:Hidden.txt

5. write your secret note and save it and close.

6. For open it Type in your command prompt

c:\Notepad Dunya.jpg:Hidden.txt

Here c:\ is your location where you have kept this file
Dunya.jpg is your image
and Hidden.txt is for hidden the data inside the image