Overview

CAD-Viewer.org is a free, web-based platform that enables users to view and share CAD files directly from their browser—no software installation required. Designed for both hobbyists and professionals, the platform offers a fast, reliable, and easy-to-use experience across all devices.

Our goal is to make CAD viewing and sharing truly accessible by providing a streamlined, out-of-the-box solution that works anywhere, anytime.

Technology and Source Code

CAD-Viewer.org is built using a combination of open-source technologies and proprietary software. We rely on established libraries such as OpenCascade and X3DOM to deliver robust CAD processing and rendering capabilities.

While the core of our software remains proprietary, we support the open-source ecosystem by contributing bug reports, fixes, and improvements to the third-party projects we rely on.

Additionally, we publish selected components of our own codebase as free software, making them available for general use. These currently include:

• Server Utilities (in progress).
• Generic Binary Keyed Format (*.gbkf)
• GBKF Core — Python implementation
• GBKF Core — C++ implementation

Support the Project

CAD-Viewer.org is independently developed and maintained in Rafael’s free time, with no corporate backing. Your support can help cover operational costs and further feature development:

• GitHub Sponsors – Help fund ongoing development and infrastructure.

• Leetchi – Help integrating the AutoCAD (*.dxf) format.

Legal Notice

CAD-Viewer.org is a personal project created and maintained by Rafael Senties Martinelli. It is based in France and is not currently registered as a legal entity.