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The Home Assistant internationalization project includes preparing platforms and the frontend for localization, as well as the actual translation of localized strings.

Some components and platforms will have strings that need to be localized specifically for that platform. These strings are managed in the core home-assistant repository. The Home Assistant backend will serve strings to the clients based on the loaded components in the running instance.

There are also localizable strings that exist only on the frontend. These strings are managed in the home-assistant frontend repository. These strings are stored with the frontend and don’t depend on the backend configuration.

Entity statesCore
Config flowsCore
Options flowsCore
Device automationCore
Text in UIFrontend

Our strings are translated by the community using the online translation tool Lokalise.