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Spectrogram Viewer

Drop any audio file to instantly generate its spectrogram, mel spectrogram or MFCC. Play the audio with a synchronized red playhead and darkening overlay showing your position. Click anywhere to seek.

In-browser No upload Free

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Drop audio here or browse

MP3, WAV, OGG, FLAC, M4A - all processing is local

3 visualization modes

Linear spectrogram, mel-scaled spectrogram, and MFCC - covering both perceptual and machine learning use cases.

Playback + seek

A red playhead moves in real time as audio plays. Click anywhere on the spectrogram to jump to that moment.

4 colormaps

Inferno, Magma, Viridis, and Grayscale - the same colormaps used in scientific audio research tools.