MP3 Cutter & Joiner
Trim any song with a visual waveform, add fades, make ringtones, or join several tracks with a smooth crossfade — then download MP3 or WAV.
Private by design — everything is processed on your device. Nothing you type or upload is sent to our servers.
What it does and why it matters
Cut the exact part of a song you need — an intro for a reel, a ringtone, a DJ edit, a podcast clip or a jingle — by dragging the handles on the waveform and previewing your selection before you export. Add a fade-in or fade-out so the cut sounds smooth.
Switch to Join to merge several tracks into one file: reorder them, set a crossfade so songs blend like a DJ mix, or add a gap between them. Everything is processed on your device with the Web Audio API and encoded to MP3 in your browser, so your music is never uploaded. MP3 encoding uses the open-source LAME encoder (LGPL).
How to use the MP3 Cutter & Joiner
- Open a fileChoose an MP3, WAV, M4A or OGG file from your device.
- Select the partDrag the green handles or type start and end times, then press play to preview.
- Add fadesSet fade-in and fade-out lengths for a smooth start and finish.
- Join (optional)Use the Join tab to merge tracks with a crossfade or gap.
- DownloadExport MP3 at 128, 192 or 320 kbps, or lossless WAV.
Is this MP3 cutter free?
Yes. It is free with no sign-up, no watermark and no limits beyond what your device memory can handle.
Are my songs uploaded to a server?
No. Audio is decoded, edited and encoded entirely inside your browser. Nothing is sent to Klaslead.
Which formats can I open?
Any format your browser can decode — MP3, WAV, M4A/AAC and OGG work in all modern browsers; FLAC works in most.
How do I make a ringtone?
Select a 20–30 second part, add a short fade-in and fade-out, and export MP3. iPhone ringtones need M4R, which you can convert from the exported file.
Can I join songs with a crossfade?
Yes. In the Join tab add your tracks, set the crossfade in seconds, and export — the end of each track blends into the start of the next.
Which MP3 quality should I choose?
320 kbps for music you will play loud or use in DJ sets, 192 kbps for general listening, and 128 kbps for voice, podcasts and small ringtones.