If the webserver returns an incorrect mime type (like: image/jpg) then WebKit can not display it correctly (will not decode the image). On other network backends this mime type informations is already normalized either by using some kind of sniffing or providing a mapping to a correct mime type.
for example opening this jpg would not show the image: http://hidefwalls.com/wp-content/g/hd-2/1600x1200_hd_wallpaper_177.jpg
Created attachment 203692 [details] proposed patch
Comment on attachment 203692 [details] proposed patch r=me
(In reply to comment #3) > (From update of attachment 203692 [details]) > r=me Could you also do a cq+ for this patch? or is there a reason against it?
Comment on attachment 203692 [details] proposed patch Clearing flags on attachment: 203692 Committed r151254: <http://trac.webkit.org/changeset/151254>
All reviewed patches have been landed. Closing bug.