This article presents a comparison of digital image metadata viewers and metadata editors. A metadata editor is a computer program that allows users to view and edit metadata tags interactively on the computer screen and save them in the graphics file. Usually a metadata viewer is preferred over a metadata editor for viewing tags. A number of metadata editors for various platforms exist. Users choose among them based on factors such as the availability for the user's platform, the feature set and usability of the user interface (UI).