Created attachment 291294 [details] screenshot of resources tab. Somehow I managed to make the inspector show that I had ∞x compression on a resource. Forgot to remember where exactly, if I reproduce I'll be sure to be back to report that. :)
<rdar://problem/28721457>
Thanks for reporting this. In these cases the Transfer Size is zero and so a divide by zero results in Infinity! I'm overhauling how we handle resource / transfer sizes in Web Inspector in bug 155112. I'm going to dup this there, since it should be addressed by the changes there. *** This bug has been marked as a duplicate of bug 155112 ***