Loco Translate

Translation of theme and plugin .po language can easily be made right in the WordPress dashboard. Loco Translate reads the .pot template file, provides you with a solid user interface to locate and translate strings, and compiles the .mo files for you. Sounds confusing. It really is not.

Demo

For this site, I’ve added a some veggies to the next and previous posts below.

Extract from WordPress.org

Loco Translate provides in-browser editing of WordPress translation files. It also provides localization tools for developers, such as extracting strings and generating templates.

https://wordpress.org/plugins/loco-translate/