Digital watermarking is the act of hiding a message related to a digital signal in different forms like an image, song, video within the signal itself. Copyright protection and proof of ownership are two of the main important applications of the digital image watermarking.The paper introduces the digital watermarking technology i.e data hiding technique that embeds a message into a multimedia work such as an image or other digital objects.This paper introduces the overview of digital watermarking .The paper mention a new paradigm which is a 3d objects watermarking in digital watermarking. Digital watermarking is used to hide the information inside a signal or image, which cannot be easily extracted by the third party. Its widely used application is copyright protection of digital information.Several digital watermarking techniques are based on discrete cosine transform (DCT), discrete wavelets transform (DWT) and discrete Fourier transforms (DFT). The digital watermarkingsuffers from different types of attacks. The recovery from these attacks requires strong detection techniques. The digital watermark agent provides a professional solution for these attacks. Digital watermarking technology is a frontier research field and it serves an important role in information security.