MP3 cutter
Cut the best part of a song for a ringtone, an alarm or a video, without uploading it.
- Nothing is uploaded
- Works offline after first use
- Open source
- No watermark · limit is your device’s memory; phones hold less
Cut an MP3 to the part you want in your browser, with a waveform and fades. It is free, needs no account and adds no watermark, and your files are not uploaded: everything runs in your browser on your device. The size limit is your device’s memory, and phones hold less; give the page a short while after your first run to save itself for offline use, and then it works offline.
Done
Open the network tab. Your files never appear in it.
Add files and run the tool to see every request this tab makes.
Your files are processed on this device and never sent to a server. Reload the page to clear everything from memory.
A chorus for your ringtone, ten seconds of a song for a video, a talk without the silence at the start: an MP3 cutter keeps just the part you want.
Drop the file, play it or click the waveform to find the moment, and press Set start and Set end. A short fade out is on so the cut does not end abruptly. Other formats work too: WAV, M4A, OGG, FLAC, or a video.
The song is cut in your browser. Nothing is uploaded, and there are no ads between you and the download.
To make a ringtone, play the song and press Set start just before the part you want, usually the start of the chorus. Then press Set end 20 to 30 seconds later; for an iPhone, stay under 30 seconds. The line under the controls shows how long the cut is. You can also type exact times in seconds, to a tenth: one minute and five seconds is 65. Tick Fade in at the start as well if the cut begins mid note, and each fade lasts 1.5 seconds.
The cut is saved as an MP3 at 192 kbps, whatever the original bitrate was, and its name ends in -trimmed. If you plan to edit the clip again, choose WAV under Save as so it is not encoded twice. The page keeps one continuous part of one file. To remove something from the middle, cut the part before it and the part after it, then join the two with Merge MP3.
How it works
- Drop an MP3.
- Set the start and end on the waveform.
- Press Trim audio and save the MP3.
In your browser, not on a server
Your browser’s own audio decoders read the file (MP3, AAC in M4A or MP4, Opus or Vorbis in WebM and OGG, FLAC, WAV) into plain samples in your tab. The part you chose is copied, faded if asked, and written as MP3 by LAME compiled to WebAssembly, or as a 16-bit WAV.
Compared with upload-based tools: Online audio cutters upload your file to a server, surround the download with ads, and some keep the file. Voice memos, interviews and unreleased tracks are private. Here the sound never leaves your device.
Verify it yourself. Give the page a short while after your first run to save itself for offline use, then turn off Wi-Fi or switch to airplane mode and run the tool again. Or open your browser's developer tools (F12, or Cmd-Option-I on a Mac), pick the Network tab, and watch it while you convert. The panel above does the same count for you.
Questions
How do I use the cut as a ringtone?
On Android, copy the MP3 to your phone and pick it in Settings, Sound, Phone ringtone. On iPhone, ringtones are 30 seconds at most and are made in GarageBand.
Can I cut several MP3 files at once?
No. The cutter works on one file at a time, because each one needs its own start and end on the waveform. Cut the first, download it, then drop the next file in its place. If you only want to shorten a batch to a size limit rather than choose a part, Compress MP3 handles many files at once.
Does cutting an MP3 lower its quality?
Slightly, because the kept part is decoded and encoded again as MP3 at 192 kbps. For a ringtone or a clip in a video you will not hear it. From a 320 kbps original, or when the clip will be edited further, choose WAV, which keeps the decoded sound exactly and is about 10 MB a minute.
Is the file uploaded anywhere?
No. There is no server in this process. The page is a static file and the work is done by code running inside your browser tab. Give the page a short while after your first run to save itself for offline use; then you can turn off Wi-Fi and it still works.
More video and audio tools
Trim audio
Cut a song, a voice memo or a podcast down to the part you want, with fades if you like. Done on this device, never uploaded.
Resize video
Change a video’s resolution, from 4K down to 240p or to a width and height you choose. Resized on this device, never uploaded.
Rotate video
Turn a sideways or upside-down video the right way up, or mirror it. Done on this device, never uploaded.
Crop video
Cut away the edges of a video, or crop it to vertical or square for social media. Cropped on this device, never uploaded.
Other conversions
Guides
- How to trim an MP3 fileCutting audio precisely needs to see the waveform, which most built-in apps do not show. Here is what actually works.
- How to merge audio filesJoining voice notes, podcast segments or songs end to end is simple once you know the right tool. Here is the desktop way and a private browser way.
- How to reduce MP3 sizeAn MP3 gets smaller when you lower its bitrate, make it mono, shorten it, or switch format. Here is what each saves, with measured results.