With the emergence of the World Wide Web and also the popularity of digital media, digital watermarking has become very important for copyright protection and authentication. Many watermarking schemes for images have been proposed, and they are evaluated according to four criteria : transparency, robustness, efficiency and payload. There is a need to compare these schemes quantitatively. In this project, we have implemented a software that provides a variety of benchmarking metrics that measure the transparency of embedded watermarks in images.