I have been using this extension for a long time, previously I used it in other browsers, but now I am very pleased that it can also be used in Mozilla, which is my favourite browser. The free version only has 4 locations, but they are quite adequate for the average job. The premium version has a large number of localisations, almost every country in the world. Both are fast, stable and the interface is very user friendly. For all these reasons I give it 5 stars