Web Captioner
Free in-browser real-time captioning powered by your browser's speech recognition.
Free in-browser real-time captioning powered by your browser's speech recognition.
Best for churches, events, classrooms projecting live captions from a laptop with zero setup. Pricing: free.
What it is
Web Captioner is a free open-source web app that captions whatever the microphone hears, live, in the browser. Output can be styled (font, size, color) for projector use, exported to TXT/SRT, or piped to OBS via a browser source. Used widely in worship, classroom, and accessibility settings. No account required.
Watch out for: Relies on the browser's Web Speech API (Chrome ships Google's cloud recognizer by default) — audio is sent to Google. Accuracy varies by mic and environment.
Install / use
open https://webcaptioner.com/Features
| Speaker diarization | No |
| Word-level timestamps | No |
| Streaming / real-time | Yes |
| Languages supported | 40 |
| HIPAA eligible | No |
Web Captioner vs Whipscribe
| Feature | Web Captioner | Whipscribe |
|---|---|---|
| Category | Products | Transcription APIs |
| Pricing | free | free beta |
| Speaker diarization | — | Yes |
| Word timestamps | — | Yes |
| Streaming | Yes | No |
| Languages | 40 | 99 |
| Platforms | Web, Chrome | Web, API, MCP |
Alternatives to Web Captioner
Whipscribe is a managed faster-whisper + whisperX service. If you want transcripts without running infrastructure, paste a URL or drop a file in the form below — you'll have a transcript in seconds.