Reply Translator for X

Reply on X in your own language: auto-detects the post’s language, translates in one click, and back-translates to check. Free.

Write replies in your own language and translate them into the other person's language with one click. ✦ Auto language detection: when you hit Reply, Reply Translator reads the language of the post you're replying to and picks the target language for you. ✦ One-click translation: write in your language, click "Translate" (or press Option / Alt + T), and your text is replaced with the translation. ✦ Back-translation check: the translation is translated back into your language, so you can confirm the meaning before posting. Undo with one click. ✦ Remembers each person's usual language: learns which language each account posts in most and uses it when you reply — even when X auto-translates their posts. ✦ Free and private: uses the browser's built-in, on-device translation models. No sign-up, no API key, and nothing you write is sent to any server. Requirements: desktop Chrome 138+ (or a Chromium browser with built-in translation). Reply Translator is an independent third-party tool and is not affiliated with X Corp.