Engineering & Support Desk
Contact StepSTLTools
Have feedback, encountered a tessellation error, or want to report a browser-specific issue? Our engineering team reviews all technical inquiries.
Found a Bug?Issue Tracker
Report a problem with the converter, 3D WebGL viewer, mesh repair, or another tool.
🔒 CAD Confidentiality Notice
StepSTLTools is strictly browser-local. Do NOT attach confidential CAD models, proprietary geometries, or classified engineering blueprints to your email. Please report software behaviors, browser version, and error messages only.
Direct Email Inquiries
Use for bug reports, browser compatibility reports, broken link notices, and general inquiries regarding StepSTLTools.
Browser Architecture Questions
OpenCASCADE WebAssembly
Read our Engineering Methodology to understand how WebAssembly and WebGL execute in-browser without cloud computation.