Filename Extensions
If you are seeking information about file extensions, then you are in the right place at right time.

Details of extension .i3dm

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

Below, you can find answers to the following questions:

  • What is the .i3dm file?
  • Which program can create the .i3dm file?
  • Where can you find a description of the .i3dm format?
  • What can convert .i3dm files to a different format?
  • Which MIME-type is associated with the .i3dm extension?
Cesium Instanced 3D Tiles Data .i3dm file icon

Cesium Instanced 3D Tiles Data

The I3DM file is a Cesium Instanced 3D Tiles Data. Cesium is a globe and map engine that can render 3D and 2D Maps.
Detailed description not available
Category: Data files
Application: Cesium
Program name: -
Mime-type: application/octet-stream
Magic bytes (HEX): -
Magic string (ASCII): -
Related extensions:
Cesium 3D Tiles Database
Cesium Point Cloud Data
Cesium Composite Tile Data
Cesium Batched 3D Tiles Data
Cesium Vector 3D Tiles Data

Other types of files may also use the .i3dm file extension. If you have helpful information about .i3dm extension, write to us!

Is it possible that the filename extension is misspelled?

We found the following similar extensions in our database:

iData Mobile Data
QuickDraw 3D Metafile
Hidden and Dangerous I3D Model Data

The .i3dm filename extension is often given incorrectly!

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

idm (1), 3dm (1), i3d (1)

Can't open a .i3dm file?

If you want to open a .i3dm file on your computer, you just need to have the appropriate program installed. If the .i3dm association isn't set correctly, you may receive the following error message:

Windows can't open this file:

File: example.i3dm

To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select from a list of programs that are installed on your computer.

To change file associations:

  • Right-click a file with the extension whose association you want to change, and then click Open With.
  • In the Open With dialog box, click the program whith which you want the file to open, or click Browse to locate the program that you want.
  • Select the Always use the selected program to open this kind of file check box.

Supported operating systems

Windows Server 2016/2019/2022, Windows 7, Windows 8, Windows 10, Windows 11, Linux, Mac OS X, macOS, iOS, Android