Twitch Subtitles

Real-time subtitles and translation for Twitch live streams.

Twitch Subtitles adds live subtitles to any Twitch stream, right over the player. **Private by design.** Transcription runs on your device with Whisper and Transformers.js (WebGPU, or CPU as a fallback). Your audio never leaves the browser and no account or API key is required. **Features** - Real-time subtitles on the video, in a floating side panel, or both. - Move and resize the panel; its position and size are remembered. - Choose between tiny, base and small Whisper models. - Optional translation to 10 languages with Google Translate. - Optional voice separation with Demucs to remove music and game effects before transcribing (requires WebGPU). - Interface available in English and Spanish. - Adjustable font size, background opacity and height. - Keyboard accessible: move the panel with the arrow keys. **Good to know** - The first run downloads the Whisper model (40–250 MB) and caches it. - Demucs is optional and downloads a ~290 MB model the first time. - Best results with a GPU: WebGPU makes transcription several times faster. - Only works on desktop twitch.tv, not in the mobile app. **Permissions** - Read the current tab and capture its audio to transcribe the stream. - Show the subtitle overlay on twitch.tv. - Optional translation requests to Google Translate. - Download model files from Hugging Face. No analytics, no telemetry, no ads, no data selling.