img-encode Convert an image to sound spectrogram Demo https://alexadam.github.io/demos/img-encode/index.html Open the generated 'result.wav' file with 'Sonic Visualizer', click on 'Layer -> add Spectrogram'. The result: Other examples Credits http://www.ohmpie.com/imageencode/ http://www.codebase.es/riffwave/ https://github.com/eligrey/FileSaver.js