I believe the library mentioned in the article (i18next) provides the necessary hooks to do this. See ‘saveMissing’ option [1]. Though you need a backend to sa

I believe the library mentioned in the article (i18next) provides the necessary hooks to do this. See ‘saveMissing’ option [1]. Though you need a backend to save this and manage translations. The maintainer of that library, locize, business model is to provide such a service. [1] https://www.i18next.com/how-to/extracting-translations https://www.i18next.com/how-to/extracting-translations