Bitmap Image Exchange file
File type: Bitmap image file
A .iefs file uses the rare Bitmap Image Exchange bitmap format.
File type category:
Bitmap image file
Date updated: September 27, 2026
The IEFS file extension is related to the rare and probably obsolete Bitmap Image Exchange format.
MIME: image/ief
Opening a .iefs file may require the legacy or specialized software that created it. Modern image viewers and editors may not recognize this format.
If the file does not open, identifying its source application or obtaining an older compatible image viewer may be necessary.
There may be no reliable modern converter for the Bitmap Image Exchange format. If a compatible application can open the file, use its export or save-as function to create a common bitmap format such as BMP, PNG, or JPEG.
Language
