About MP3 Cutter
MP3 Cutter is a free, browser-based audio editing tool built for simplicity and privacy. We believe trimming audio shouldn't require expensive software or a subscription.
What we care about
Privacy First
No accounts and no tracking. Exported files are processed over an encrypted connection and deleted immediately.
Lightning Fast
Waveform editing and preview run on your device via the Web Audio API — no waiting to scrub.
Free & Accessible
No sign-ups, no downloads, no limits. Works on any modern browser.
Our Mission
We started MP3 Cutter because we were frustrated with bloated audio editors that require installations and subscriptions. Our goal is simple: give everyone a fast, free, and private way to trim audio files.
How It Works
MP3 Cutter uses the Web Audio API built into modern browsers to decode your file and draw its waveform, so choosing your start and end points is instant and happens entirely on your device. When you hit export, the file is sent over an encrypted connection to our processing server, encoded with ffmpeg into the format you picked, handed straight back to you, and deleted. We keep no copies.
What you can edit
Uploads can be MP3, WAV, OGG, FLAC, AAC or M4A, up to 500 MB per file, and the audio extractor additionally accepts video containers such as MP4, MOV, MKV, AVI and WebM. Exports come back as MP3, WAV, OGG, FLAC or AAC. Beyond trimming there are sixteen dedicated tools: joining and splitting, format conversion, volume, speed and pitch, fades, a ten-band equaliser, bass boost, compression, noise reduction, vocal removal, ringtone creation, reversal and a browser microphone recorder.
What we don't do
No accounts, no email capture, no watermark on anything you export, and no adverts following you around. We also try not to overstate what the site is: editing and preview are local, but exporting genuinely does upload your file, and we would rather say so than claim otherwise. The voice recorder is the one exception, because it builds the WAV in the page and never contacts our server at all. There is a fair-use limit of twenty exports a minute to keep the service responsive, which no ordinary session comes close to.
Open & Free
MP3 Cutter is free to use with no limitations. No watermarks, no account required. Just open the site and start cutting.