3D files to 3D printing - help! - USDZ to STL

Hi Everyone,
I’m new to this 3D world but have helped develop multiple real products over the years.

My goal is very simple, I have purchased a couple of 3D models from the store and I want to get them printed in 3D with some minor modifications and turn them into products.

All the files i’ve downloaded appear to be in formats that are not supported directly by most of the online conversion tools.

USDZ to STL - would be great!

Thanks
Andre’

use blender it supports USDZ or download GLTF( auto converted ) use blender to import and export ( supports STL too )