How can I change language Firefox without having to download it again?

Hello
I would like to know how can I change the language of firefox, without having to download and re - install again. I read there is a way to do it, but I can't find the language file I need to download. (I have firefox in french, and I want to put it in Spanish)
Thanks for your replies

You need to download and install both versions first, then you can use the following add-on to switch between these two versions of Firefox:

https://addons.Mozilla.org/en-us/Firefox/addon/1333/

I hope that's what you're looking for.

Tags: Firefox

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