SoundTool

What is SoundTool?

SoundTool — free, browser-based audio toolkit. 43 tools: trim/merge/convert, EQ, reverb, BPM detector, vocal isolator, TTS, and 8 playable virtual instruments (piano, violin, guitar, sax, kalimba...). Every instrument records and exports WAV — no account, no upload, 100% client-side. 14 languages. Built by a solo developer on the Web Audio API. Zero data collection: your audio never leaves the browser.