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>> I3F file

I3F file format description

Many people share .i3f files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .i3f file can be edited, converted or printed with. On this page, we try to provide assistance for handling .i3f files.

1 filename extension(s) found in our database.

.i3f - I3 Fax File

I3F file is an I3 Fax File. I3F is a proprietary file format that contains faxes.

.i3f file format description:
I3F format
Interaction Fax
Graphic files
- / -
I3 Fax File related links:
I3 Fax File related extensions:
Gatan DigitalMicrograph 2 Image
Pegs Image
Digital Optics V++ XML Image
Interleaved YUV 16Bits Raw Image
Windows 8 User Tile Data
Grayscale 16 Image

Naturally, other applications may also use the .i3f file extension. Even harmful programs can create .i3f files. Be especially cautious with .i3f files coming from an unknown source!

Can't open a .i3f 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:


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.

The .i3f file extension is often given incorrectly!

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

i3, irf, ief, i3c, if, i3d

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

Modula-3 Interface Source Code
Image Exchange Format Bitmap File
Houdini 3D Texture
iCE CFR Raw Data
ISIS Control File
IFWin Project File

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