Cyanotype is one of the oldest photographic printing techniques. It produces specific cyan-blue print. Unlike other previously discovered techniques, the cyanotype is a non-silver process. Theoretical part of this thesis describes cyanotype from historical as well as the origins of its unique resulting color. Thesis elaborates on cyanoype's commercial use in the time of its discovery and today, as it finds its way into modern photography and art. Thesis also describes the process of printing prussian blue photographs, starting with preparation steps such as needed chemicals and emulsions, paper preparation, negative, lighting procedure and developing of photographs themselves. There was also practical work neccessary to write this thesis. Classic cyanotype simulation has been done, along with the descriptions of materials, equipment, chemicals and all of the steps leading to the photograph's realization including its subsequent modifications. Making of digital cyanotype simulation is also included in practical work for this thesis.