340

.340Generic 3D Model File

Various · Unknown

Developer
Various
Category
3D & CAD
MIME Type
application/octet-stream
First Released
Unknown
Open Format
No
File Signature
Not consistently defined, often application-specific.
At a Glance
.340
Generic 3D Model File

A generic file extension used for 3D model data that lacks a universal standard, often requiring specialized software for interpretation.

Reviewed on May 8, 2026
Compression
Varies
Transparency
N/A
Editability
Low
Best for
Generic 3D data storage

Key Features

  • Stores 3D geometric data.
  • Can include texture and material information.
  • Lacks a universally defined standard.
  • Requires specific software for proper interpretation.

Best For

  • Applications that utilize a custom or proprietary 3D data format.
  • Simple storage of 3D geometry where interchange is not a primary concern.
  • Situations where a specific software explicitly defines its use of the .340 extension.

Less Ideal For

  • Standard 3D model exchange between different software packages.
  • Archiving 3D models for long-term compatibility.
  • Web-based 3D rendering.
  • High-fidelity game asset storage.

Common Use Cases

  • Storing 3D models for various applications.
  • Exporting 3D assets from one software to another (if compatible).
  • Holding intermediate 3D data during complex workflows.

How to Open It

  1. Attempt to open the file with the 3D modeling software that created it.
  2. Try importing the file into popular 3D applications like Blender or 3ds Max, as they may support various generic formats.
  3. Consult the documentation of the software associated with the .340 file for specific opening instructions.
  4. If the file originated from a specific game or application, try opening it within that context.

What is a .340 file?

The .340 file extension is most commonly associated with generic 3D model data. These files often serve as containers for geometric information, textures, and other properties necessary to represent a three-dimensional object. However, the specific format and content of .340 files can vary widely as it is not tied to a single, well-defined standard. Because of this ambiguity, opening and working with .340 files often requires specific software that is designed to interpret its particular structure.

Programs That Open .340 Files

PlatformProgram
WindowsBlenderFree
3ds MaxPaid
macOSBlenderFree
Autodesk MayaPaid
LinuxBlenderFree

How to Convert .340 Files

FormatMethod
.OBJBlender, 3ds Max
.STLBlender, 3ds Max

Common Problems with .340 Files

⚠️ File cannot be opened by common 3D software.
This is often due to the generic nature of the .340 format. Try opening it with the specific application that generated it, or explore import options in advanced 3D modeling suites like Blender.
⚠️ The 3D model appears distorted or incomplete.
The file may be corrupted, or the software trying to open it does not correctly interpret the specific encoding used for this .340 file. Ensure you are using compatible software and check the file integrity.

Frequently Asked Questions

Is .340 a standard 3D file format?

No, .340 is not a standardized 3D file format. It's often used as a generic extension for 3D model data, meaning its internal structure can vary.

Can I open a .340 file with any 3D program?

Not necessarily. Because it's a generic format, you'll likely need the specific software that created the .340 file or a program with broad import capabilities like Blender.

What is the difference between .340 and formats like .obj or .fbx?

.obj and .fbx are widely adopted, standardized 3D file formats designed for interoperability, whereas .340 is typically a proprietary or custom format without broad support.

Technical Details

As a generic container, .340 files typically store binary data representing vertices, polygons, UV coordinates, and potentially material information. Without a standardized specification, the internal structure can differ significantly between applications that use this extension. File signatures or headers are often absent or not consistently defined, making automatic identification challenging.

Did You Know?

The ambiguity of the .340 extension means its meaning can differ entirely depending on the application that uses it.
Many older or niche software applications might use generic extensions like .340 to store their native data.

Security Information

Like any file that can contain executable code or complex data structures, .340 files from untrusted sources should be handled with caution. Ensure that any software used to open them is up-to-date and from a reputable provider.

Related Extensions