What Is a .mts File? .mts Format, MIME & How to Open

Quick facts

Extension.mts

File typeMTS 3D Model

MIME typemodel/vnd.mts

Category3D Model

Charset—

Compressible—

What is .mts

What is a .mts file?

A .mts file is a MTS 3D Model. It is a 3D model format used to store meshes, scenes and printing geometry.

In the mime-db registry it maps to model/vnd.mts. When serving .mts over HTTP, set the Content-Type header as shown in Developer info below.

Related entities: it maps to model/vnd.mts and is used by TypeScript among others — and is delivered over HTTP via the Content-Type header.

How to open .mts files

Use Blender or MeshLab to open and edit .mts files.
Any text editor (Notepad, VS Code) can inspect the raw content as text.

Developer info

When served over HTTP, responses should set the following header:

Content-Type: model/vnd.mts

Common software that reads/writes .mts:

BlenderMeshLabAutodesk Viewer

Relation chain

.mtsextension of

format

MTS 3D Modelserved as

mime type

model/vnd.mtssent via header

http header

Related extensions

Related MIME types

Related programming languages

TypeScript

.ts .cts .mts

Common uses

3D printing
Game assets
CAD and design exchange

How to edit .mts files

Open the file with Blender, make your changes and save.
Most editors preserve the original formatting and encoding — avoid changing the charset.

How to create .mts files

Create a new file and save it with the .mts extension, or export this format from Blender.

Frequently asked questions

What programs can open .mts files?

Common options include Blender, MeshLab, Autodesk Viewer. You can also open many of these files with built-in viewers or a browser.

How do I create a .mts file?

Create a new file in any text editor or the app that owns the format and save it with the .mts extension.

What is the relationship between .mts and the model/vnd.mts MIME type?

model/vnd.mts is the media type identifier used for .mts files during network transfer (for example in the HTTP Content-Type header).

Sources & standards

Updated 2026-08-18

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