Steganography
Steganography is the practice of concealing a secret message within an ordinary message or file, without anyone else being aware that there is a hidden message. The goal of steganography is to hide the existence of the message, so that it can be transmitted undetected. Unlike cryptography, which relies on encryption to make a message unreadable to anyone who doesn't have the key, steganography does not alter the message in any way. Instead, it hides the message within the data of another file, such as an image or audio file, by subtly changing certain bits of information. Steganography can be used for a variety of purposes, from covert communication to digital watermarking, and has been used throughout history in various forms.
To Encode
• To encode a message into an image, choose the image you want to
use, enter your text and hit the Encode button.
• Keep in mind that the image needs to be larger the more text you wish to conceal. You will be
alerted if the image you selected is too small to convey your message.
• Both the image and the message you conceal won't ever be sent over the internet.
To Decode
• To decode a hidden message from an image, just choose an image and
hit the Decode button.
• Both the image and the message you conceal won't ever be sent over the internet.