3DN file format description

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

1 filename extension(s) found in our database.

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

Can't open a .3dn 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.3dn

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 .3dn file extension is often given incorrectly!

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

3d, wdn, edn, 3dh, 3db, rdn, 3dm, 3dg

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

.3d

CAD-3D Model

.edn

Adobe DRM Activation Key

.3d

Cadwork 3D Drawing

.edn

Altera EDIF Input File

.3db

3DMark Report Database

.3dg

3D Grapher Document

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