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

Quick facts

Extension.fbx

File typeFBX 3D Model

MIME typeapplication/vnd.autodesk.fbx

CategoryData & Text

Charset—

Compressible—

Format familyfbx

What is .fbx

What is a .fbx file?

A .fbx file is a FBX 3D Model — Autodesk interchange format for 3D scenes.

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

Related entities: it maps to application/vnd.autodesk.fbx — and is delivered over HTTP via the Content-Type header.

How to open .fbx files

Use Blender or Unity to open and edit .fbx 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: application/vnd.autodesk.fbx

Common software that reads/writes .fbx:

BlenderUnityMaya

Relation chain

.fbxextension of

format

fbxserved as

mime type

application/vnd.autodesk.fbxsent via header

http header

Related extensions

Related MIME types

application/vnd.autodesk.fbx

.fbx

Common uses

Configuration files
Data interchange between systems
API request and response payloads
Logs and data exports

How to edit .fbx 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 .fbx files

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

Frequently asked questions

What programs can open .fbx files?

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

How do I create a .fbx file?

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

What is the relationship between .fbx and the application/vnd.autodesk.fbx MIME type?

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

Sources & standards

Updated 2026-09-13

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