How to translate the theme with Loco Translate plugin?
1a, Setting WordPress in your language: Admin page to Settings > General > Site Language and select from the list of available languages.
1b, Download installation and active Loco Translate plugin: https://wordpress.org/plugins/loco-translate/
2, In Admin page -> Loco Translate -> Themes -> Translate your theme:
3, Create new language (your language):
4, Choose language you want to translate into:
5, Loco Translate plugin will automatically generate your language file and save it in the languages folder in your theme ( wp-content/themes/archi/languages/ ):
6, Translate text in default language (English) in your language:
7, Results after translation:
7b, FrontEnd (comment box on single post):
You may also be interested, translate the custom post type plugins with Loco Translate plugin: