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I3DM file extension

The table below provides useful information about the .i3dm file extension. It answers questions such as:

  • What is the .i3dm file?
  • What program do I need to open a .i3dm file?
  • How can the .i3dm file be opened, edited or printed?
  • How can I convert .i3dm files to another format?

Table of Contents

We hope you find this page helpful and a valuable resource!

1 extension(s) and 0 alias(es) found in database

✅ Cesium Instanced 3D Tiles Data

I3DM file is a Cesium Instanced 3D Tiles Data. Cesium is a globe and map engine that can render 3D and 2D Maps.
I3DM format description not yet available
Category: Data files
Application: Cesium
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
I3DM aliases:
I3DM related links:
I3DM related extensions:
Cesium Batched 3D Tiles Data

Cesium Vector 3D Tiles Data

Cesium Composite Tile Data

Cesium Point Cloud Data

Cesium 3D Tiles Database

Other types of files may also use the .i3dm file extension.

🚫 The .i3dm file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

3dm, i3d, idm

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

OpenNURBS 3D Model
Houdini 3D Texture
Indigo Prophecy Game Archive

🔴 Can't open a .i3dm file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .i3dm file association, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .i3dm file extension, write to us!

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