3DI file format description

Many people share .3di files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .3di file can be edited, converted or printed with. On this page, we try to provide assistance for handling .3di files.

1 filename extension(s) found in our database.

Naturally, other applications may also use the .3di file extension. Even harmful programs can create .3di files. Be especially cautious with .3di files coming from an unknown source!

Can't open a .3di 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 can't open this file:

example.3di

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 one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

• Open Control Panel > Control Panel Home > Default Programs > Set Associations.
• Select a file type in the list and click Change Program.

The .3di file extension is often given incorrectly!

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

3d, wdi, edi, 3do, 3dk, rdi, di, 3dl

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

.3d

CAD-3D Model

.rdi

SPEFO Differential Spectrum Data

.3dl

LightConverse 3D Scene

.wdi

WinDev Component Description

.3do

Total Annihilation 3D Object

.edi

ENVI-met Information File

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If you have useful information about the .3di file format, then write to us!