The template automatically sets the following categories: Category:Commons users who use Mozilla Firefox
The template takes no parameters.
The template is intended to be used in the following namespaces: the User namespace
The template is intended to be used by the following user groups: all users
To add your language to the list of languages supported by this template, please copy the code of Template:User Firefox/en (or any other language version you prefer to translate) and replace the text strings in there (the form below can be used to create a translation, the English version is preloaded in the edit box). Please change the parameter
en (or whatever language you are translating) to the language code of your language.