Nanoporous metal films have many applications in a great variety of scientific fields, and especially nanoporous gold films have many applica- tions in green nanotechnology. Hence, structural and optical properties of such materials were investigated. Local density functions and local per- colation functions were calculated by using scaning electron micrographs and the optical properties of the films were calculated using the Hilfer equation. The results are presented in the report as graphs and show how the materials optical properties depend on the structure of the gold films.