Digital watermarking is a technology that is used for the protection of digital media such as image, audio, video, etc. Watermark is the secret information embedded in digital media. This project deals with the digital watermarking of the photographs of the mark sheets given by the educational institutes. Duplication and copyright issues had been a major trouble in the present days. Unauthorized use of the digital media is one of the concerns for the media creators. This project only deals with watermarking the images which further helps in the authentication of the photographs. In this project an image goes through the encoding process to digitally watermark the image without changing the actual image. The original image which is in spatial domain is converted into frequency domain using FFT. The frequency of original image is manipulated using watermarked image and then IFFT is used to retrieve the new image in which watermark is embedded. Similarly, both original and embedded image are converted to frequency domain using FFT and compared to extract watermarked image. The original image was successfully embedded using watermark image. And, watermark was successfully extracted from embedded image. This project can be used for the authentication of the images which different people/ organization publish on the internet or provide to authorized person.