JT - Format Overview

April 09, 2026

General Information

This guide is part of the RapidPipeline 3D Formats Knowledge Database.

Format NameJT
Long NameJT Open (Siemens)
Extensions.jt
Internet Media Type (previously MIME)unspecified
Common Use CasesCAD, Visualization, Collaboration, Manufacturing, PLM

What is the JT format, and what is it used for?

JT (originally Jupiter Tessellation, now JT Open) is a 3D data format developed by Siemens Digital Industries Software for lightweight visualization, collaboration, and PLM (Product Lifecycle Management). JT files provide highly compressed representations of 3D CAD data, making them ideal for sharing design information across organizations without exposing proprietary CAD data. The format supports multiple levels of detail (LOD), assembly structures, metadata, and annotations. JT is an ISO standard (ISO 14306) and is widely used in automotive and aerospace industries for design review and collaboration. It is a file format mostly used for lightweight 3D visualization and collaboration.

call to action

Best-in-Class 3D Processing in Your Favorite Tools.

100% Local Processing via Desktop Software.

Try for Free
decorative-icon

Features supported by the JT format

FeatureSupported?
Morph TargetsNo
Rigid AnimationsPartial0
Skinned AnimationsNo
AnimationsPartial1
Free-Form SurfacesYes
Geometry CompressionYes
Quad MeshesYes
Basic 3D GeometryYes
PBR MaterialsNo
Transparent MaterialsYes
Vertex ColorsYes
MaterialsYes
Scene CompositionYes
Hierarchical Scene GraphYes
Scene NodesYes
Standardized FormatYes
Embedded TexturesYes2
Multiple UV ChannelsPartial3
Normal MappingYes4
Procedural TexturesPartial5
Texture CompressionPartial6
Texture TransformsYes7
TexturingYes

0 - Basic rigid body animation for design review
1 - Simple animation support for assembly operations
2 - JT fully supports embedding texture image data directly within the file as binary segments, making JT files self-contained.
3 - JT's material model supports multi-texture layers, but multiple independent UV coordinate sets per vertex are not fully defined across all geometry representations.
4 - Normal maps are fully supported in the JT material specification with no stated limitations.
5 - JT includes a generic shader/material node system that enables procedural-style texture effects. Full arbitrary procedural texture programs (e.g. GLSL) are not defined.
6 - JT stores texture images (typically as JPEG data) within binary segments, enabling compressed image storage. No GPU-level texture compression (e.g. BCn/DXT) is defined by the JT specification.
7 - The JT specification defines a full texture transform matrix, supporting translation, rotation, and scaling of texture coordinates.

Best-in-Class 3D Processing in Your Favorite Tools.

100% Local Processing via Desktop Software.

Try for Free

Converting and Optimizing JT Files

There are various ways to convert between JT files and other 3D formats. With RapidPipeline, you can easily convert and and optimize JT files, at scale. It supports JT, as well as many other file formats (examples: 3dsMax, 3MF, ACIS, AutoCAD, CATIA, COLLADA, Creo, DGN, FBX, glTF, I-deas, IFC, IGES, Inventor, Navisworks, OBJ, Parasolid, PLY, PRC/U3D, Revit, Rhino 3DM, Solid Edge, SolidWorks, STEP, STEP Enhanced, STL, USD, USDZ, VDA-FS, VRM, VRML), at high quality.

Due to the potential limitations aforementioned on the table above, in principle, this format cannot always perfectly convert 3D data between JT and other formats. In the following, you can find format conversion guides between JT and the most important other formats, along with a rough score for compatibility of this workflow:

Converting JT to Other 3D File Formats

What's the best way to get JT files into my 3D applications?

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 JT files - the conversion guide above gives a rough idea. Once you know what you would like to do, tools like RapidPipeline can help you perform the necessary steps, and to automate the process.

However, especially when introducing pipelines and workflows at scale in an enterprise context, it is usually good to rely on dedicated 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.

Best-in-Class 3D Processing in Your Favorite Tools.

100% Local Processing via Desktop Software.

Try for Free

Meet the Author

author image

3D Knowledge Team

3D Technical Artists

RapidPipeline lets you convert, optimize and prepare your 3D models, easily.
Try it today, or meet our human 3D experts. The Best-in-Class Tools for Your 3D Processing Jobs