My brother @daniel-sc and I have developed a tool (doloc) designed to automate the translation of JSON files (we also support XLIFF, with more formats coming). It integrates seamlessly with React Intl / Format.JS.

We created doloc because we needed a tool like this for our own work and couldn’t find anything that met our requirements.
The big advantage is its seamless integration into the development workflow, ensuring a smooth workflow for developers (and of course: good translations 😉).

We’ve also put together a detailed guide specifically for using doloc with React Intl and Format.JS:
👉 Getting Started with React Intl / Format.JS

We’d love to hear your feedback! Feel free to try it out and share your thoughts or suggestions.

P.S. This is a recent article on dev.to which discusses our idea: App Localization with doloc