Superb extension. It help me to find a lot of things about websites. Thanks..

It's excellent, very updated!

Ne fonctionne pas sur firefox developer à jour

Very impressed with this add-on. Has a very high accuracy rate.
Didn't seem to work at first as I couldn't see the icon.
I had to restart Firefox with add-ons disabled and then restart again with add-ons enabled. This can easily be done from the Help sub-menu.