Tool to perform spectral analysis of audio files (WAV, MP3, etc.) and display any hidden data in sound frequencies and their visualization.

Convert an audio file into a spectrogram image online. Pick between multiple color palettes and choose what output size you want. (MP3, WAV, FLAC and OGG)

Generate a visual spectrogram from any audio file, convert an image into sound, or decode a spectrogram image back to audio. All in your browser — no upload, no signup.

Visualize audio files (WAV, FLAC, OGG, MP3, M4A) as spectrograms to see how intensity is distributed across frequencies over time. Adjust the frequency range, switch between linear and …

This audio spectrum analyzer enables you to see the frequencies present in audio recordings.

Free online audio spectrum analyzer and spectrogram visualizer. Analyze frequency content with real-time spectrum display and zoomable spectrogram.

Free online spectrogram viewer with multiple color schemes and FFT settings. Analyze audio files or live microphone input. No installation required.