Empowering engineers and designers worldwide
At STP Viewer, we believe that accessing and viewing 3D models should be effortless, instant, and accessible to everyone. Our mission is to break down barriers in 3D file visualization and make professional-grade viewing tools available to all.
What drives us forward
Built on a foundation of accessibility, innovation, and user-centricity
To democratize 3D file viewing by providing free, powerful, and accessible tools that work instantly in any web browser, anywhere in the world.
A world where every engineer, designer, and creator can instantly access and collaborate on 3D models without barriers or limitations.
User privacy, open accessibility, continuous innovation, and building tools that just work when you need them most.
Real-time statistics showing our product usage
Max File Support
Monthly Active Users
Files Processed
The advantages that set us apart
Designed with simplicity, power, and reliability in mind
Drag, drop, and view. No complex installations or steep learning curves.
Advanced 3D rendering with measurement tools and detailed analysis capabilities.
Works seamlessly across all devices and platforms through your web browser.
Your files are processed locally. We never store or share your 3D models.
The people behind STP Viewer
A passionate team dedicated to making 3D file viewing accessible to everyone
Founders & Engineers
A dedicated team of engineers and designers passionate about making 3D technology accessible. We combine years of CAD experience with modern web technologies to create tools that truly serve our users.
We envision a future where 3D collaboration is as simple as sharing a web link, where geographic boundaries don't limit engineering collaboration.
We're committed to keeping STP Viewer free, continuously improving based on user feedback, and maintaining the highest standards of privacy and security.
What our customers are saying
"STP Viewer has revolutionized how I review CAD files. No more installing heavy software - just drag, drop, and view instantly!"
Mechanical Engineer
"Perfect for quick model reviews on the go. The browser-based approach means I can check designs anywhere without waiting for downloads."
Design Engineer
"Incredibly fast and reliable. The 3D rendering quality is impressive for a web-based tool. Saves me hours every week!"
Product Designer
"Finally, an STP viewer that doesn't require installation or registration. The interface is clean and the performance is excellent."
CAD Technician
"Essential tool for our team collaboration. We can share and review 3D models instantly without compatibility issues."
Manufacturing Engineer
"Outstanding performance with large files. Our 50MB+ assemblies load smoothly and the viewing experience is seamless."
Engineering Manager
"STP Viewer has revolutionized how I review CAD files. No more installing heavy software - just drag, drop, and view instantly!"
Mechanical Engineer
"Perfect for quick model reviews on the go. The browser-based approach means I can check designs anywhere without waiting for downloads."
Design Engineer
"Incredibly fast and reliable. The 3D rendering quality is impressive for a web-based tool. Saves me hours every week!"
Product Designer
"Finally, an STP viewer that doesn't require installation or registration. The interface is clean and the performance is excellent."
CAD Technician
"Essential tool for our team collaboration. We can share and review 3D models instantly without compatibility issues."
Manufacturing Engineer
"Outstanding performance with large files. Our 50MB+ assemblies load smoothly and the viewing experience is seamless."
Engineering Manager
"Perfect for rapid prototype reviews. I can quickly share design iterations with clients and get instant feedback without software compatibility issues."
Industrial Designer
"Streamlined our quality inspection process. Being able to view STP files directly in the browser has eliminated the need for multiple CAD licenses."
Quality Engineer
"Game-changer for project coordination. Our distributed team can now view and discuss 3D models in real-time without expensive software installations."
Project Manager
"Invaluable for client presentations. I can showcase 3D models instantly during video calls without worrying about software compatibility issues."
Freelance Engineer
"Cross-platform compatibility at its finest. Works seamlessly across Windows, Mac, and Linux browsers - exactly what our diverse tech stack needed."
Technical Lead
"The model analysis features are impressive. Being able to inspect geometry details and measurements directly in the browser saves tremendous time."
3D Modeler
"Perfect for rapid prototype reviews. I can quickly share design iterations with clients and get instant feedback without software compatibility issues."
Industrial Designer
"Streamlined our quality inspection process. Being able to view STP files directly in the browser has eliminated the need for multiple CAD licenses."
Quality Engineer
"Game-changer for project coordination. Our distributed team can now view and discuss 3D models in real-time without expensive software installations."
Project Manager
"Invaluable for client presentations. I can showcase 3D models instantly during video calls without worrying about software compatibility issues."
Freelance Engineer
"Cross-platform compatibility at its finest. Works seamlessly across Windows, Mac, and Linux browsers - exactly what our diverse tech stack needed."
Technical Lead
"The model analysis features are impressive. Being able to inspect geometry details and measurements directly in the browser saves tremendous time."
3D Modeler
Upload your .stp or .step files and start exploring your 3D models instantly. No registration required, completely free.