Translate every file automatically after cleaning

Google Free uses Google's public unofficial translate endpoint — no key, but can break or get rate-limited anytime.
MyMemory is an officially free, no-signup translation API with CORS support — reliable for personal use, but requires picking a real source language (no auto-detect) and small request chunks.
API mode uses the official Google Cloud Translation API with your own key — most stable, billed by Google per character. Your key/email are stored only in this browser (localStorage) and sent directly to the provider, never anywhere else.