This paper mainly deals with mixed image occult writing and occult writing techniques. For the purpose of information security, image-secret writing is extremely important. Security is the most difficult aspect within networks and network applications. Network and networks applications square measure growing in no time, that the importance and therefore the worth of the changed information over the net or alternative media varieties square measure increasing. Encryption may be thanks to increasing image security by scanning pixels. Encryption, will protect privacy by yourself. It works in a wide range of fields and network communications, medical photography and military communications. Due to the natural selection of images such as high duplication of information and the ability to mass information, the image encryption is different that of text, encryption for information conversion, coded Cipher code that cannot be easily deciphered by unauthorized persons.