.Obj convert to Low Poly 3D Building


how can I convert a 3D Building with many Polys to a low poly?

Additional tools? Online? Free?

Need that for solar planning software. Otherwise the the PC freezes.

Thanks a lot!

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I think Blender will do

But I haven’t done the operation myself

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Blender or MeshLab can decimate the mesh for you and simplify it.

Thanks. Can you be more specific in MeshLab, please.
Got the .obj file opened. Looks good.
And now?

This tutorial seems good, though it might not be current.

You can always check the MeshLab documentation, as well.

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