Abstract:Watermarking is the process of hiding the digital information, such as image, audio and video. It is typically used for authentication and copyright. Communication is a major part in our day-to-day life, now a day's exchanging of information in the form of image, audio and video takes place through internet. There are some issues or threads associated with internet transformation with respect to intellectual property rights (IP rights) like forgery, authentication and copyrights. In this paper we limit the survey to images only and we present a detailed survey of existing and newly existing watermarking techniques.