Translates text between English and 9 languages using on-device neural translation models (Helsinki-NLP OPUS-MT). Each language pair is a one-time ~110MB download, then works fully offline. Nothing is ever sent to a server.
Choose a language, then type something to load its model.
How it works
Translation runs on Helsinki-NLP's OPUS-MT neural machine translation models, loaded on demand for the specific language pair and direction you pick — English-to-Spanish and Spanish-to-English are two separate models, each a one-time ~110MB download — and then run entirely on-device via transformers.js.
FAQ
Why does switching languages or direction trigger a new download?
Each language pair (English-to-Spanish vs. Spanish-to-English, for example) is a separate trained model, so swapping direction or picking a different language loads a different ~110MB file rather than reusing what's already cached.
How accurate is the translation compared to Google Translate?
It uses a smaller, older architecture (OPUS-MT) than the large models behind commercial translators, so it can lag on idioms, slang, or long or ambiguous sentences, though it handles straightforward text well.
Free, unlimited, no account. If this saved you a paid tool, a small thanks is appreciated.