How to View CAD Files in Browser Without Software

Can't Open That CAD File? You're Not Alone

You've got a STEP file from a supplier, a client, or your manufacturing team—but you don't have SolidWorks, NX, or Fusion 360 installed. Maybe you're working from home on a laptop that only has a browser. Maybe your CAD license expired. Maybe you're not an engineer at all, just need to check a dimension or verify a design before approving it.

Whatever the reason, you're stuck. Traditional CAD software requires expensive licenses, powerful hardware, and installation. For anyone who just needs to view CAD files in browser, the options have been limited—until now.

View CAD Files in Browser in 3 Simple Steps

OnyxCAD lets you open and explore STEP, STP, and other CAD formats directly in your web browser. No software installation. No license. No learning curve. Here's how it works:

Step 1: Drag and drop your file
Go to onyxcad.com and drop your STEP file into the upload area. That's it. The file processes in the cloud—no waiting for downloads or local processing.

Step 2: Explore your model in 3D
Once loaded, you can rotate, zoom, pan, and explode the assembly. Click on any part to see its name, dimensions, and properties. Use section views to peek inside. It's full 3D navigation, right in Chrome, Firefox, Safari, or Edge.

Step 3: Annotate and share
Add tolerance markers, thread notes, color highlights, and text annotations directly on the model. Then generate a shareable link. Your collaborators can view and markup the same model—no account required for viewers.

Why This Matters for Engineering Teams

CAD files shouldn't be trapped behind paywalls. When a procurement manager needs to verify a part before ordering, they shouldn't need an engineering seat. When a supplier sends a revised STEP file, the whole team should be able to review it in minutes, not wait for someone with the right software to open it. Browser-based CAD viewing removes the bottleneck. It makes CAD accessible to everyone who needs it—engineers, managers, clients, manufacturers—without licensing overhead or software dependencies.

OnyxCAD was built for exactly this: fast, collaborative CAD viewing that works for anyone with a web browser.

Try OnyxCAD free at onyxcad.com. Upload a STEP file and see your CAD in browser in under 60 seconds.