Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

STEP File Analyzer and Viewer User Guide (Update 7)



Robert R. Lipman


The STEP File Analyzer and Viewer opens a STEP (ISO 10303 - STandard for Exchange of Product model data) Part 21 file and (1) generates a spreadsheet or CSV files of all entity and attribute information, (2) creates a visualization (view) of part geometry, sketch geometry, graphical PMI annotations, supplemental geometry, and datum targets that is displayed in a web browser, (3) reports and analyzes any semantic PMI, graphical PMI, and validation properties for conformance to recommended practices, and (4) checks for basic STEP file format errors.
Advanced Manufacturing Series (NIST AMS) - 200-12
Report Number


manufacturing, interoperability, data exchange, STEP, spreadsheet, viewer


Lipman, R. (2021), STEP File Analyzer and Viewer User Guide (Update 7), Advanced Manufacturing Series (NIST AMS), National Institute of Standards and Technology, Gaithersburg, MD, [online],, (Accessed June 16, 2024)


If you have any questions about this publication or are having problems accessing it, please contact

Created October 13, 2021, Updated November 29, 2022