Take a look here, the tag page:

As far as I know this is Firefox official logo: (original)

I'm pretty sure it used to be that official logo until recently but now it's suddenly changed to blue and toothless theme of Mozilla foundation. (This appears to be the original)

I wouldn't really mind unless discovering another oddity: that new logo is hosted on imgur, while all other sponsored tag icons I encountered are hosted on http://cdn.sstatic.net e.g. logo url is http://cdn.sstatic.net/stackoverflow/img/tag-logo-android.png and logo url is http://sstatic.net/stackoverflow/img/tag-logo-facebook.png

So who is responsible for those icons? Has Mozilla foundation itself decided to change the logo?

  • The Android thing isn't always hosted on the CDN. If you look at Nicks answer here i.stack.imgur.com/tKsDb.png is the Android logo and that's hosted on imgur. Nov 6, 2013 at 13:21
  • @ben sorry didn't find anything related in that answer by Nick... anyway it's not relevant, it was moved there temporarily by Geoff and don't think it's in use. Nov 6, 2013 at 13:23
  • I was responding solely to your oddity; I'm saying that it's not always true... some sponsored tag icons are hosted on imgur, for the homepage at least. Nov 6, 2013 at 13:25
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    You guys are only seeing half the story, somewhere on the Mozilla site is bubbles, FIND BUBBLES! FREE BUBBLES! BRING BUBBLES HOME! Nov 6, 2013 at 13:42
  • 1
    I wish I was good at Photoshop. I would put Waldo's hat on top of the fox. Nov 6, 2013 at 14:50
  • 4
    @AndrewBarber Challenge accepted. Ok, it is super low res, and with Paint, but still. Nov 6, 2013 at 17:08
  • 1
    @Dukeling hehe... awesome! Though I would have put the hat on the entire logo, not just the fox ;) Nov 6, 2013 at 17:09
  • Looks like someone is going to make a hat outta fox's fur. Dec 27, 2015 at 8:23

2 Answers 2


The short answer is: this is the logo Mozilla sent us in their package of materials for their tag sponsorships (note this logo is also used on and ).

To get to the bottom of where this logo comes from, just take a look at the logo for the Mozilla Foundation:
If you still don't see it, black out the dino head...
...and from there, I hope you can see where this logo comes from:
I can't speak to exactly why the logo above is being used, but I can assure you it was sent directly from Mozilla to the Ad Sales team here at SE.

Regarding the use of cdn.sstatic.net versus imgur:
We used to use the former for hosting those logos for tag spsonsorships, now we use the latter. Note that the examples you cite, and are sponsorships that have been around for a long time. Take a look at a more recent (though not that recent) example in : https://i.stack.imgur.com/SeoON.jpg

I hope that clears everything up! :)

In the comment thread of an article posted on Hacker News, Robert Nyman (Technical Evangelist for Mozilla) said the following:

Yes, I do. :-) That logo is the new logo for MDN, our network for developers at Mozilla. Since Stack Overflow is a resource for developers we see a direct connection to that. Also, we have different foxes for different products, so that would probably be confusing - rather have one consistent look.

  • 8
    Can I get some freehand circles to show what you're talking about with the logo? Nov 6, 2013 at 20:42
  • Awesome, thanks a bunch! Think I found another bug now, i.stack.imgur.com/SeoON.jpg won't load for me while i.stack.imgur.com/SeoON.jpg works fine. Nov 6, 2013 at 20:43
  • And make sure those freehand circles are red, or else.
    – Servy
    Nov 6, 2013 at 20:43
  • I feel like I'm going to kick myself when I figure this one out... Nov 6, 2013 at 20:47
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    BTW the short answer is: "Mozilla themselves stole the fox and replaced it with a dino". :-) Nov 6, 2013 at 20:51
  • @AndrewBarber can't you see the similarity between the images? Nov 6, 2013 at 20:53
  • @ShaWizDowArd I can. I just don't know what that last logo is! heh Nov 6, 2013 at 20:53
  • @AndrewBarber think it's just a blue theme to the old logo, no special meaning. Nov 6, 2013 at 21:46
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    Someone should poke Mozilla that the firefox logo fits much better, especially when used in such a small size. Nov 19, 2013 at 1:06
  • Cool, their plan finally revealed! :-) Nov 19, 2013 at 23:59

This is the logo for the Mozilla Developer Network, not the Firefox logo: MDN

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