Free

Audio Viewer

Upload any audio file to see its waveform. Optionally transcribe speech to text with OpenAI Whisper.

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Audio waveform
Language: Duration:

How It Works

Waveform — your audio is loaded with librosa, amplitude samples are plotted with matplotlib, and the result is returned as a downloadable PNG. Supports MP3, WAV, OGG, M4A, and FLAC up to 50 MB.

Transcription — when enabled, OpenAI Whisper "base" model runs on the server. No data is sent to OpenAI — Whisper runs entirely locally. Supports 99+ languages with auto-detection.