// about

About MyFreeAudioTool

MyFreeAudioTool is a collection of thirty-one free audio utilities that run entirely in your web browser — editing (trim, merge, silence removal, tagging), conversion, effects (EQ, reverb, vocal removal, noise reduction, 8D and 3D spatial audio, slowed + reverb), generators (test tones, noise colors, metronome) and analysis (BPM/key, chromatic tuner, spectrogram, waveform art).

Why we built it

Most "free online audio tools" work the same way: you upload your file to their server, wait, they process it, you wait again, and then you download the result. That's slow, it caps your file size, and — more importantly — your personal recordings, voice memos and music end up on someone else's computer.

Modern browsers don't need any of that. The Web Audio API and WebAssembly are powerful enough to decode, edit and re-encode audio at full speed, locally. So that's what this site does. Your files never leave your device. There's no upload step, which also makes everything dramatically faster.

Our principles

• Private by architecture. We can't see your files even if we wanted to — there's no server that receives them.
• Actually free. No signup, no watermark, no trial, no daily limit.
• Focused tools. Each page does one job and does it well, on desktop and mobile.
• No installs. If you have a browser, you have the tools.

The technology

The tools are built on the Web Audio API for decoding, editing, filtering and rendering; FFmpeg compiled to WebAssembly for format conversion, compression and extraction; the LAME encoder (also WebAssembly) for MP3 export; the MediaRecorder API for recording; and hand-rolled DSP (FFT, autocorrelation, granular synthesis) for analysis and pitch shifting. All of it runs in your browser tab and is gone when you close it.

Questions or ideas? Get in touch — we read everything. And if you like this site, we also make MyFreePDFEdit and MyFreeImageTool, built on the same no-upload principle.