Add captions to your Twitch stream with an OBS overlay or Twitch extension. Compare caption overlay tools and see why StreamTranslate ranks #1 for Twitch streamers.
Start Free TrialSetup GuideA caption overlay for Twitch is a real-time text display that shows what you are saying, visible to your viewers. There are two main approaches for Twitch: an OBS Browser Source overlay (captions are baked into the stream video and all viewers see them), or a Twitch Extension overlay (captions are delivered via the Twitch platform UI and individual viewers can toggle them).
StreamTranslate supports both approaches. The OBS Browser Source URL drops directly into OBS in one step. The native Twitch extension is available in the Twitch Extension Store.
The most common approach: add a Browser Source to OBS using your StreamTranslate URL, position the caption overlay on your scene, and go live. Captions appear as part of your stream video — everyone watching sees them as long as the source is visible. This is the fastest setup (under 5 minutes) and works on Twitch, YouTube Live, Kick, and every other platform you stream to via OBS.
StreamTranslate native Twitch extension is the premium Twitch caption experience. The extension appears as a panel or overlay in the Twitch viewer UI — viewers who want captions activate them through the Twitch panel, viewers who do not want them see nothing. This approach is how professional broadcast closed captioning works — viewer-controlled, not baked into the video.
The Twitch extension also unlocks the ability for viewers to select their preferred caption language if you are using translation, letting individual viewers see captions in their chosen language rather than a single global translation.
| Approach | All Viewers See It | Viewer Control | Setup | Works on Non-Twitch |
|---|---|---|---|---|
| OBS Browser Source | Yes | No | 5 minutes | Yes |
| Twitch Extension | Only if enabled | Yes — per viewer | Extension Store install | Twitch only |
StreamTranslate: OBS Browser Source + Twitch Extension. Deepgram Nova-2 gaming accuracy. 50+ language real-time translation. $9.99/month.
OBS Built-In Plugin: English-only, Google STT, no translation, basic accuracy. Free.
LocalVocal: OBS plugin, Whisper local, English-only, no Twitch extension. Free with GPU.
Maestra: Complex OBS setup, $29/month, no Twitch extension, enterprise STT.
StreamTranslate translates your captions in real time to 50+ languages. In the OBS overlay, the caption automatically shows in the viewer language (or a configured default). In the Twitch extension, viewers can select their preferred language individually. This makes your Twitch channel globally accessible without any extra work. Start at the setup guide.
Get your StreamTranslate Browser Source URL from the setup page, add it as a Browser Source in OBS, position it on your scene, and go live. Captions appear in your stream automatically.
StreamTranslate — OBS Browser Source integration, native Twitch extension, Deepgram Nova-2 gaming accuracy, 50+ language translation, $9.99/month.
Yes. StreamTranslate has a native Twitch extension on the Twitch Extension Store that lets individual viewers toggle captions on and off.
Yes for StreamTranslate — it integrates via OBS Browser Source. The Twitch extension does not require OBS once streaming is set up through any software.
Yes with StreamTranslate. The 50+ language real-time translation means viewers can see captions in their preferred language. The Twitch extension allows individual language selection.