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Export Compression

A quick win to make heavy 3D assets more performant and save on file size is to compress it’s textures. Blender offers a simple checkbox on export with various parameters to optimise even further.
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Optimize texture maps

The Blender plugin SimpleBake helps to optimize textures for exmaple by allowing you to separately bake the textures of a selected object.

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View 3D models in your file system

When creating multiple versions of a 3D model, it can be tricky to compare or find the right one. 3DViewer.xyz is a great helper that integrates nicely with your macOS finder to preview 3D models of varrying file fromats.