Audio to Text (Browser)
Caption speech from an audio file in your browser with live speech recognition — free, fast and private.
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How this works: the Web Speech API listens through your microphone. To caption a file, play it through your speakers (or use system audio routing) while captioning runs. It does not read the audio track of the file directly, and it cannot caption a file silently in the background.
How to use Audio to Text (Browser)
- Choose an audio file — it plays right here in the page, nothing is uploaded.
- Pick the spoken language, then press Start Live Captioning and allow microphone access if asked.
- Press play on the audio so its sound reaches your microphone; words appear in the transcript box as they are recognised.
- Press Stop, then Copy Transcript or Download .txt to save it. If your browser has no speech recognition, paste your notes in the fallback box instead.
Browser-only speech recognition where supported. Accuracy varies by browser, accent and audio quality. This is not a server speech-to-text API. Recognition listens through your microphone, so it cannot transcribe a file silently — play the file through speakers while it runs.
Frequently Asked Questions
Is Audio to Text free?
Yes, it is 100% free with no sign-up. It uses your browser's built-in speech recognition where available.
Which browsers support live captioning?
Speech recognition works in Chrome and Edge on desktop and Android. Firefox and Safari do not support it yet — in those browsers you get the paste-your-notes fallback instead.
Is my audio uploaded anywhere?
No. Your file plays locally in the page and is never uploaded. The transcript is built in your browser.
How accurate is the transcript?
Accuracy varies by browser, accent, background noise and audio quality. Always read through the transcript and fix mistakes before using it anywhere important.