Important notice for Mixamo customers.
We’re retiring features and services on this site, learn how this affects you.
The first thing you'll need is a model to decimate! You can decimate a rigged or unrigged model.
The Decimator is a completely cloud based service. Just visit us at https://www.mixamo.com/decimator , select the .fbx file you want to upload and the target reduction percentage. For example, if your character is 10,000 polygons and your reduction percent is 25% your result will be 2,500 polygons.
Your decimated model will download immediately or, if you'd like, you can upload it for auto-rigging right away!