Abstract: In this tech-era everyone is using social networking sites and many messenger sites. Using internet anyone can send data and access any data in few seconds in all over world but the problem is this if any data once send over a network lose its privacy any third party can access your data and can use your data in illegitimate manner and you cannot claim that this data belongs to you but if you put a watermark in that data the third party cannot access your data if your data send to any wrong person by mistaken then that person can send back your data by identifying watermark. So now main objective of our paper is to make a compatible relation between imperceptibility and robustness. .In this paper an improved technique based on SWT and SVD is presented that has good PSNR, MSE and NCC compare to other technique.
Keywords: SWT (Stationary wavelet transform), SVD, PSNR, NCC.