SunOS Grey Scale Bitmap | |
Sun Microsystems, Inc. | |
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IM is an obsolete bitmap format. IM files only supported gray scale and used compression. IM files were commonly found on SunOS platforms.
IM files were also used by other programs, for example, AIM communicator. Most modern image viewers don’t support IM images – one of the last programs that support those format is XnView image viewer, available for multiple platforms.