In article ,
Evan Carew wrote:

Older versions of Microsoft browsers had this problem. Those of us who
switched to Mozilla or Thunderbird years ago don't experience that
problem either. In other words, there's really no excuse, if you have
problems viewing image formats, either upgrade your browser, or , better
yet, get a different one. Complainers should be told as much.

Wrong. It is best to use open source formats for universal
acceptability. Using MicroSoft proprietary formats is an invitation to
complaints.