Steganohraphy is the techniques used to hide messages inside an object. SneakyLink is a simple python script which makes use of lbs module to embed hidden text messages into image files.
Run python3 sneakylink.py and the tkinter user interface will pop up.
Select the image you want to hide the message into. Type the text in the box and select 'hide text'. Save and then reopen it to see the message you embedded earlier.