Audio Cutter
An audio cutter that keeps every part you mark and throws away whatever falls between them, fades and crossfades included.
Recording
The recording
Drop an audio file, or choose one
M4A, MP3, WAV, Opus, FLAC and Ogg — nothing leaves this device.
This browser has no audio engine.
The file
How to use
- Drop the track on the page or choose it. The waveform draws as soon as it decodes, with one part already covering the whole thing.
- Mark what you are keeping: drag the band edges or type the times, press + Add cut for another part, and use the remove button on a card to drop one you no longer want. Play joined plays the result end to end.
- Set Fade in, Fade out and a Crossfade if the joins need softening, pick a format, then press Export. Download saves the file once it is written.
About this tool
Reaching for an audio cutter usually means one of two jobs: lift a clip out of a long recording, or delete something from the middle of one. Both work the same way here. Load the track, wait for the waveform to draw, then drag the band's edges around the part you want to keep. Each part also has a card below the waveform with its start and end in hundredths, like 0:14.30 and 0:41.90, and you can type a time straight into either one when a word needs landing exactly.
Pull an edge in and + Add cut drops a new part into the biggest stretch you are not keeping yet. Drag its edges to the next part worth keeping. Everything outside your bands is dropped, so two parts give you the verse and the chorus with the bridge gone. Tap a band to jump the player to its start; a card goes red if two parts overlap or if one has been squeezed to nothing.
With two parts, Play joined runs them back to back in the order you marked them, and the player's clock counts the joined length. Crossfade wakes up at the same moment. Two tenths of a second is usually enough to stop a hard join from clicking, and the length shown above the Export button already takes it off. Fade in and Fade out are different: they shape the finished file, its opening and its ending, not the seams inside it.
The export writes a single file. M4A by default, or Opus, WAV, FLAC. M4A is the practical pick for a ringtone because phones take it and the file stays small, while WAV or FLAC is what you want if the clip is heading into an edit. Input is anything your browser decodes, which in practice covers MP3, WAV, M4A, OGG and FLAC. A demo you have not released yet gets trimmed here without ever being uploaded.
Rough edges
- MP3 loads but does not export. The writable formats are M4A, Opus, WAV and FLAC, because a licensed MP3 encoder is not something this site bundles.
- Cuts are placed by hand and by ear. Nothing snaps to a beat and nothing detects silence for you; the Silence Remover is the tool that finds quiet gaps automatically.
- The last cut cannot be deleted. Removing rows works until one is left, and that band is what the export uses.
- The whole file decodes into memory while you work, so a two-hour recording a laptop shrugs off can push a phone into a reload. Cut long sources in passes when that happens.
Frequently asked questions
How do I keep two parts of a song and drop the middle?
Drag the band you already have over the first part, press + Add cut, then drag the new band over the second part. Whatever sits between them is gone from the export. The kept parts are joined in the order you marked them, and Play joined lets you check that order before you commit.
How do I turn a song into a ringtone?
Mark about 30 seconds around the hook, set Fade out to half a second so it does not stop dead, export as M4A, then set it in your phone's sound settings. On an iPhone the file wants a .m4r extension, which is the same container under a different name.
Does the fade apply to every join or only to the ends?
Fade in and Fade out shape the opening and the ending of the finished file. Joins between kept parts are handled by Crossfade, which stays greyed out until there is a second part to join. Setting it to 0.2 is usually enough to make a seam inaudible.
What do the times on the cards mean?
Each part's card gives its start and end to a hundredth of a second and how long it runs. The large figure above Export is the length of the file you will get: the parts added up, less any crossfade at the joins.
Which files can I load?
MP3, WAV, M4A, OGG and FLAC all decode. The field takes any audio file, and when your browser cannot read one it says so rather than failing quietly.
Will the parts I keep be re-encoded?
Always, because the audio is decoded to samples, sliced, joined and written back out. Pick WAV or FLAC and that round trip is lossless. Pick M4A or Opus and it is a fresh compression, fine for sharing and ringtones, less fine if you repeat it on the same file five times over.
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