CADProps is a free web-based CAD viewer and inspection platform based in Singapore that lets mechanical engineers, machinists, and manufacturing teams open, inspect, and analyze 3D models directly in the browser without account creation. It supports native formats including SolidWorks (SLDPRT/SLDASM), Siemens NX (PRT), Autodesk Inventor (IPT/IAM), and CATIA (CATPart/CATProduct), alongside standard CAD exchange formats (STEP, IGES, Parasolid X_T, SAT, JT) and mesh formats (STL, OBJ, 3MF, GLB/glTF). Processing is handled on CADProps servers in temporary guest workspaces with a default one-hour retention period, providing exact B-Rep measurements for solids, approximate values for meshes, and user-defined density weight calculations.
Full Pricing Breakdown
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Technical Audit
Compatibility & Interoperability
Trust & Support
The Pros
- 100% free with no account creation or desktop software installation required
- Broad native CAD format support including SolidWorks, NX, CATIA, Inventor, and STEP
- Exact B-Rep solid geometry calculations for STEP and IGES files
- Secure sharing links with optional password protection
The Cons
- Read-only inspection and viewing utility — no parametric CAD modeling or editing
- Mesh format measurements (STL/OBJ) are polygonal approximations rather than exact B-Rep solids
- Server-side temporary workspace processing deletes guest files, previews and results after about one hour by default
CADGuide Verdict
Final Professional Conclusion
"An agile, remarkably frictionless online CAD viewer that allows engineers, machinists, and procurement teams to inspect models and compute physical volume/mass properties without launching heavyweight desktop CAD packages."
Expert Q&A
?What is CADProps used for?
CADProps is a free browser-based CAD viewer and engineering inspection platform based in Singapore. It enables users to open, inspect, and analyze 3D CAD models directly in a web browser without installing desktop software or signing up for an account.
?Which CAD file formats does CADProps support?
CADProps supports proprietary CAD formats including SolidWorks (SLDPRT, SLDASM), Siemens NX (PRT), Autodesk Inventor (IPT, IAM), and CATIA (CATPart, CATProduct), alongside universal and mesh formats like STEP/STP, IGES/IGS, Parasolid (X_T), ACIS (SAT), JT, STL, OBJ, 3MF, GLB, and glTF. It also handles assembly components packaged in ZIP archives.
?How does CADProps calculate model weight and volume?
For CAD solids such as STEP, IGES, and native CAD files, CADProps calculates exact volume and surface measurements using B-Rep geometry. For mesh formats like STL and OBJ, measurements are polygonal approximations. Weight and mass estimates are calculated once the user confirms or provides a specific material density.
?How does CADProps handle uploaded CAD files and privacy?
Uploaded files are processed on CADProps servers in a temporary guest workspace. Guest files, previews and calculated results are deleted after about one hour by default, or earlier when the workspace is cleared. Files saved to an account follow a separate 90-day inactivity policy.
?How much does CADProps cost?
CADProps is completely free to download and use with no paid license required. Visit the official website for download and license terms.
