.AVATAR File Extension

Profile picture used by Google Talk, an online chatting application; stores a bitmap image in a .JPG or .PNG image format; used for displaying an image alongside each name in a user's friends list, as well as during chatting sessions.

In Windows Vista and Windows 7, AVATAR files are stored in the [user]\AppData\Local\Google\Google Talk\avatars\ directory.

NOTE: You can typically rename AVATAR files with the ".jpg" or ".png" extension and then view them with a standard image viewer.