How to open and view STL files in Windows 11/10 Multiple third-party applications are used to view 3D models including STL files in Windows.

The best 3D file converter of 2025 in full: Why you can trust TechRadar We spend hours testing every product or service we review, so you can be sure you're buying the best.

You can also import and export 3D models in many different file formats in order to reuse them in your favorite tool or engine — Sketchfab can convert files for you.

Learn how to change file size in Paint and Paint 3D on Windows 11/10. You can also change the file resolution in Paint app and Paind 3D.