Currently, Model-Driven Engineering (MDE) plays a key role in the software development process as it aims to handle their increasing complexity and focuses on the automatic generation of code and/or specifications from system models. This paper presents a very useful tool for the automatic generation of Maude specifications from both Petri net PNML (Petri Net Markup Language) descriptions or incidence matrices. At the end of this paper, a simple but complete Petri net example will be presented to demonstrate the usefulness of the developed tool.