The Complete STL to USDZ Conversion Guide

June 23, 2025
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General Information

This guide is part of the RapidPipeline 3D Formats Knowledge Database. It shows how to convert STL to USDZ, if you'd like to know more about the formats, please check out the following links:

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Converting and Optimizing STL Files to USDZ

There are various ways to convert between STL and USDZ. With RapidPipeline, you can easily convert and and optimize STL files, at scale. It supports USDZ, as well as many other file formats (examples: 3dsMax, FBX, glTF, OBJ, PLY, STEP, USD, VRM), at high quality.

Below you can find a video explaining how to convert your files:

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What are STL and USDZ files commonly used for?

The STL file is a format mostly used for 3D printing.
The USDZ file is a format mostly used for interactive 3D, on the Web and elsewhere (e.g., in XR).

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Comparison of Features Supported by STL and USDZ

FeatureSupported by STLSupported by USDZ
Morph TargetsNoYes
Rigid AnimationsNoYes
Skinned AnimationsNoYes
AnimationsNoYes
Free-Form SurfacesNoYes
Geometry CompressionNoNo
Quad MeshesNoYes
Basic 3D GeometryYesYes
PBR MaterialsNoYes
Transparent MaterialsNoYes
Vertex ColorsNoYes
MaterialsNoYes
Scene CompositionNoYes
Hierarchical Scene GraphNoYes
Scene NodesNoYes
Standardized FormatYesYes
Embedded TexturesNoNo
Multiple UV ChannelsNoYes0
Normal MappingNoYes
Procedural TexturesNoYes
Texture CompressionNoNo
Texture TransformsNoYes
TexturingNoYes

0 - This and other properties of USDZ (including specific PBR materials, etc.) might not be supported in Apple's ARKit implementation.

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Limitations of STL Files to USDZ Conversion Workflow

The following limitations should be taken into account when converting STL files to USDZ format:

STL Feature (not supported by USDZ)Limitation Details
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What's the best way to get STL files into my 3D applications, and are there alternatives to using USDZ?

Doing 3D conversion right, especially at scale, can be tricky, as 3D data is in general a rather complex (yet very powerful!) medium. This also applies to STL and USDZ files - the conversion guide above provides a rough first idea about that. Once you know what you would like to do, tools like RapidPipeline can help you perform the necessary steps, and to even automate the process for thousands or even millions of files.

Especially when introducing pipelines and workflows at scale in an enterprise context, it is usually good to rely on dedicated tools and expertise, making sure you do not introduce any steps into your 3D workflow that are detrimental to the final output's quality, or that take your team too much time (and money).

If you're interested to hire dedicated expertise from the best in the field to help your company reach your goals fast and reliably, please do not hestitate to contact DGG. Being the creators of RapidPipeline, and ambassadors for open 3D standards for more than a decade, we have been building some of the world's most advanced 3D pipelines, having processed many millions of 3D assets.

Therefore, our expertise will help you to reach your goals faster, at scale, and with the least possible friction, since we are focused on maximum interoperability.

To get started with 3D data conversion and optimization today, sign up for a free account!

If you have any questions, feel free to chat with our human team.

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Meet the Author

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3D Knowledge Team

3D Technical Artists

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