Visualize CAD changes on Github

A CAD Version Control extension to Track and Visualize Changes

Diff Viewer is an open-source extension for all Chrome, Edge, and Chromium-powered browsers. Use the industry-standard version control platform GitHub, supercharged with a rich CAD visualizer. The infrastructure behind Diff Viewer utilizes our Design API.

Review model changes visually

Upload your models to GitHub and make safe, incremental changes to them with a full version history. And with our extension, you can now visually review your model with clear indications of what has changed between versions. Our extension overrides some of the GitHub interface to provide you with a full 3D view of your files, and two review modes: 2-up and combined.

2-up view of Diff Viewer on an example GitHub pull request

2-up view

For when you just need to see the before and after state of the model.

combined view of Diff Viewer on an example GitHub pull request

Combined view (experimental)

See the additions, deletions, and unchanged portions of your model in one 3D viewer.

Start using Diff Viewer

Try it out for free.


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