I read a post about localization. I'm trying to Simple Image Gallery normal version (plugin).
I've searched the following file but I'm not able to find it under administrator/language/en-GB/
but it's not present .

The language file of Simple Image Gallery is located under /administrator/language/xx-XX/xx-XX.plg_content_jw_sig.ini .

Do I missing something ? Thanks

Hi,
This ini is the language file for the administrator section. There should be at least at the en-GB folder.

Sorry for the Necroposting. I just wanted to "remind" myself and also help new users.
Localization is possible by looking at the file that OP (Giovanni Chiozza) is refering to. There is a section about Front End; I guess JW devs decided to put these files into the same place.
You can see the strings you need to override in Language Overrides, and make what you are interested to and save. That's it.

Thanks Yanni, offering a solution or mentioning an alternate method is not necroposting.