Privacy
Audio is not uploaded; waveforms never enter a server-side artwork library.
File reading, Web Audio decoding, peak sampling, information calculation, and PNG drawing happen in the current browser.
Local audio
Selected audio is not sent as a network request. The site does not save filenames, sound content, title input, or exported images.
No playback or transcription
The tool reads only decoded buffers to make waveforms. It does not upload audio for playback, transcribe speech, or identify speakers.
Visit analytics
First-party analytics aggregates only public path, referrer domain, country or region code, and device category—not audio properties or tool input.
Ad boundary
Ad slots follow the method explanation, away from audio selection and download controls. Ads cannot access local audio buffers.