Audio Editor

Cut, trim, fade and normalise an MP3, OGG or WAV file, then export it to WAV, MP3 or Opus. Everything happens in your browser: the file is never uploaded.

Open a file
Set Start and End
Export the selection

Drop an audio file here or click to choose one

MP3, OGG (Vorbis or Opus), WAV, and also M4A or FLAC if your browser can read them · up to 200 MB and 60 minutes

Start (IN)

End (OUT)

No selection: the whole file

Times as mm:ss.mmm (e.g. 01:23.450). If only Start is set, End is the end of the file (and vice versa). Shortcuts: I / O set Start / End at the playhead, Space play/pause, Shift + click extends the selection, Delete removes the selection, Esc clears it, Ctrl+Z / Ctrl+Y undo / redo, Ctrl + mouse wheel zooms.

Edit

Silence (seconds)

Effects

Whole file

Fade curve

Gain (dB)

Normalise peak to (dBFS)

Effects apply to the selection, or to the whole file when nothing is selected. Fades need a selection.

Export

Export the selection (Start → End) the whole file

Format

Sample rate

The file is named after the original with “-edit” added. Tags (title, artist, cover) are not copied into the exported file.

File

Name: –
Format: –
Duration: –
Sample rate: –
Channels: –
File size: –
Peak level: –
Estimated export: –

About the Audio Editor

This free online audio editor lets you shorten a recording, remove a passage, add a fade or raise the volume of an MP3, OGG or WAV file without installing any software. The sound is decoded by your browser (Web Audio API), edited in memory and exported to WAV, MP3 or Ogg Opus: nothing leaves your device.

It is designed for quick jobs: preparing a ringtone, cleaning up a voice memo or a podcast intro, cutting a song for a show or a video, or converting a file to another format.

Key Features

Precise waveform: zoom down to individual samples, time ruler, selection editable to the millisecond.
Edits: keep the selection only, delete, cut, copy, paste, insert silence, with unlimited undo and redo.
Effects: fade in and fade out (linear, exponential or S-curve), gain in dB, peak normalisation, reverse, mono conversion.
Export: WAV 16-bit, 24-bit or 32-bit float, MP3 from 128 to 320 kbps, Ogg Opus from 64 to 192 kbps, with an optional sample-rate change.
Lossless MP3 cut: when you only trim or delete parts of an MP3, the original frames are copied as they are, without any quality loss (precision of one MP3 frame, about 26 ms).

How to Use the Tool

Step 1: open a file by clicking the area above or dragging it onto it.
Step 2: listen (Space), then press ⟦ Start (I) and End (O) ⟧ at the right moments, or drag across the waveform. Fine-tune by dragging the Start and End handles, with the ±0.1 s / ±1 s buttons, or by typing the times.
Step 3: check the result with ▶ Play selection; optionally apply edits and effects (Ctrl+Z undoes).
Step 4: in Export, keep “the selection”, choose the format and click Export: only the passage from Start to End is saved.

Common Use Cases

Make a 30-second ringtone or notification sound from a song.
Remove a cough, a silence or a mistake from a voice recording, a podcast or a lecture.
Add a fade out to a track used in a video, a presentation or a sports event.
Convert a WAV recording to MP3 or Opus to save space, or an OGG file to MP3 or WAV for a device that does not read it.

Tips & Browser Support

Best quality: keep working in WAV and encode to MP3 or Opus only once, at the end. Each lossy re-encoding loses a little quality.
Normalise to −1 dBFS rather than 0 dB to leave headroom for MP3 or Opus encoding.
OGG files on Safari: older versions of Safari (before 17 on macOS / iOS) cannot read OGG; convert the file elsewhere or use another browser.
Ogg Opus export needs the WebCodecs API: recent Chrome, Edge or Firefox. In Safari the option is disabled; use MP3 or WAV.
Large files: a 60-minute stereo file uses about 1 GB of memory once decoded; on a phone, prefer shorter files.
Lossless MP3 cut: available only for an MP3 file edited with trims and deletions. Cut points snap to MP3 frames, and a very short artefact is possible right after a junction.

Privacy & Security

The audio file is read and processed only in your browser: it is never uploaded, stored or analysed on a server, and the tool makes no network request with your data. Exported files contain no metadata from the original (title, artist, cover). MP3 encoding uses lamejs 1.2.1, a JavaScript port of LAME distributed under the GNU LGPL, served from this site and run in a separate worker.