Today I was notified, that our page dsl.o2online.de is loading a specific asset twice. Looking at the WPT results, it is a Google+ PNG Sprite, that gets loaded twice. Once via HTTP, once via HTTPS.
Objects 75 & 83
Seems like not “we” are doing it, but the Google Code Snippet is responsible for that.
So you are downloading 42 KB instead of 21.
To find out, what is wrong, I checked WPT itself and the same thing happens here as well:
Objects 27 & 38
Funny enough, when using Chrome, this doesn’t happen. Even stranger is, you do not see the initial call for https//apis.google.com/js/plusone.js at all!
Object 8 of the previous run is in this one absolutely missing.
So my question would be:
a) is there a way to pull the png on IE and FF just ONCE?
b) is there a (good) reason for this behaviour?
c) why is the inital request not visible in Chrome?