Empowering designers and engineers with cutting-edge STEP file viewing technology
STEP Viewer transforms how you interact with CAD models. Built on advanced WebGL technology, we deliver enterprise-grade visualization tools directly in your browser.
We believe great tools unlock creativity. STEP Viewer was born from engineers' and designers' desire for excellence — a platform that doesn't just view files, but empowers innovation.
Cutting-edge technology meets intuitive design
All STEP files are processed locally in your browser using advanced WebGL 2.0 technology, ensuring your design files never leave your device.
Based on the professional Online3D Viewer engine, supporting complex geometry rendering and smooth interaction with files up to 100MB.
Built-in professional measurement tools supporting distance, angle, and dimensional measurements with 0.01mm precision.
Modern web architecture with 9-language internationalization, responsive design for desktop, tablet, and mobile devices.
Up to 100MB file support
Sub-second loading for models <1MB
0.01mm measurement accuracy
WebGL 2.0 compatible browsers
Trusted by designers and engineers worldwide
Model inspection and dimensional verification for engineering workflows
Design validation and collaborative analysis
Interactive 3D modeling courses and student portfolios
Remote design discussions and client presentations
"As a mechanical engineering professor, STEP Viewer has greatly simplified the process of demonstrating complex CAD models to students."
Dr. Li Ming
Professor, Mechanical Engineering
"The measurement tools help me quickly verify component dimensions, dramatically improving my workflow efficiency."
Sarah Thompson
Product Designer
"In aerospace projects, we need to frequently inspect complex structural components. STEP Viewer's fullscreen view makes it easy to examine every detail."
Zhang Hai
Aerospace Engineer
Have questions about Step Viewer? We'd love to hear from you.