Nope, read on, GIF was supported from day one: http://1997.webhistory.org/www.lists/www-talk.1993q1/0257.html http://1997.webhistory.org/www.lists/www-talk.1993

Nope, read on, GIF was supported from day one: http://1997.webhistory.org/www.lists/www-talk.1993q1/0257.html http://1997.webhistory.org/www.lists/www-talk.1993q1/0257.ht... "Back to the inlined image thread again -- I'm getting close to releasing Mosaic v0.10, which will support inlined GIF and XBM images/bitmaps, as mentioned previously." -- Marc Andreessen (Fri, 12 Mar 93) XBM file support had been removed in Internet Explorer 6 (IE 1-6 is based on Mosaic code, see IE6 about dialog): https://en.wikipedia.org/wiki/XBM https://en.wikipedia.org/wiki/XBM