Free Audio Transcript Generator — Live in Your Browser

Yes — completely free, no signup, no credit card. The tool runs locally in your browser using the Web Speech API. Your audio never leaves your device, and there are no usage limits, watermarks, or paywalls. For higher-accuracy transcription with speaker identification and AI summaries, Nimitai offers a paid plan starting at $149/month.

The browser-based Web Speech API delivers around 85–92% accuracy on clear English speech in a quiet environment. Accuracy drops with background noise, accents, multiple speakers, or low-quality microphones. For B2B sales calls or production use cases that need 95%+ accuracy plus speaker diarization, use a dedicated platform like Nimitai, Otter, or Rev.

No. The Web Speech API runs locally on your device — your microphone audio is processed in your browser and never sent to Nimitai or any third party. Some browsers (Chrome) route speech to Google for processing under the hood, governed by their privacy policy. For fully on-device transcription, use Firefox or a desktop tool.

Yes — upload an audio file (MP3, WAV, M4A, OGG) and the tool will play it through your speakers and capture the transcript via your microphone. For best results, use headphones disabled and play at moderate volume. For direct file-to-text transcription without playback, use Nimitai or any cloud transcription service.

Chrome, Edge, Safari (14+), and Opera support the Web Speech API. Firefox has limited support. The page must be served over HTTPS for microphone access. If your browser doesn't support live transcription, you'll see a notice explaining why and a recommendation for alternative tools.