Audio analysis without unnecessary barriers.

Online Spectrum Analyzer is an independent browser tool for musicians, students, engineers, researchers, and anyone curious about what a sound contains.

Why this tool exists

Many online analyzers provide a graph but make exact readings, spectrogram tuning, or useful exports difficult. This project brings spectrum and spectrogram analysis together in one focused workspace with precise frequency and level information.

Private by design

Audio decoding, FFT analysis, visualization, and export are performed on your device. The analyzer does not require an account and does not send the audio you select to an analysis server.

Built for useful exploration

The product is developed independently and improved around practical tasks: inspecting harmonics, comparing signals, identifying frequency ranges, studying recordings, and revealing information encoded in spectrograms.