PZFX is an extension of files used by a specialized software tool for statistical data processing and visualization called GraphPad Prism. PZFX is a project made in the program. Technically, it is a text file containing XML programming code. The information it contains relates to data organized in tables, as well as charts, results and notes.

GraphPad is a tool developed by GraphPad Software, Inc. for macOS and Windows. It is used to visualize all kinds of scientific data.