Audio Splitter

Audio Splitter cuts one long recording into several files. Turn a live set or a vinyl rip into separate tracks, break a two-hour lecture into chapters, chop an audiobook into ten-minute pieces for an old player, or pull every answer out of an interview as its own clip.

There are four ways to decide where the cuts go. Tap the waveform to place markers by hand, or play the recording and press “Cut here” when you hear the change. Ask for a number of equal parts, a new part every so many minutes, or let the tool find the pauses and cut in the middle of each one, optionally leaving the silence out. Automatic cuts appear as markers you can then drag, add to or remove.

Each part gets a name box and a tick box, so you can label tracks and skip the bits you don’t want. Keep the original format and the parts are copied without re-encoding, losing no quality at all. Everything happens in your browser: the file never leaves your device.

1. Press “Choose a file” or drop an audio or video file on the box. The waveform appears once the sound has been read.
2. Choose how to split: At markers, Equal parts, Every… or At silences. For markers, tap the waveform where each cut should go, or press Play and then “Cut here” (or the M key).
3. Fine-tune: drag a marker to move it, press its × to remove it. Moving a marker after an automatic split switches to “At markers” and keeps the cuts.
4. In the list of parts, type a name for each one if you like, untick any part you don’t want, and press a part’s play button to check it.
5. Pick a format under “Save as” and press “Split into … files”. Download them all as one ZIP, or each part on its own from its row.

• Four ways to split: hand-placed markers, a number of equal parts, every set number of minutes and seconds, or at the pauses.
• Markers you can add by tapping, drag with a mouse or finger, nudge with the arrow keys and remove with × or the Delete key.
• “Cut here” while listening, so cuts land where you hear the change.
• Silence detection with an adjustable level and minimum gap, a suggested level for each recording, and an option to leave the silence out of the parts.
• A name box per part; file names are built from the original name, the part number and your label.
• Same-format splits of MP3, M4A, OGG and FLAC are copied without re-encoding, with no quality loss.
• Or save as MP3, M4A, OGG, WAV or FLAC, with an optional 10 ms fade on every edge.
• All parts in one ZIP, or any single part from its own download button.

• For an album or DJ set, start with “At silences”, then drag or add markers where two tracks run into each other without a pause.
• If the silence finder misses pauses, move the slider right towards −20 dB: the room noise in the gaps is louder than the level you set.
• A same-format copy cuts on the nearest audio frame, a few hundredths of a second away. Choose WAV, another format or soft edges when a cut must be sample-exact.
• Cutting in the middle of a loud note can click. Tick “Soften the cut edges” to add a tiny 10 ms fade at each edge.