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Audio Trimmer & Converter

Cut a clip from any audio file — or cut a part out — then fade, speed up, reverse and save it as MP3, WAV or OGG. Everything runs in your browser; the file is never uploaded.

Drop an audio or video file here

MP3, WAV, OGG, M4A/AAC, FLAC, WebM — or the soundtrack of an MP4 video

Only edit audio you own or have permission to use, and ask before recording other people.

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Guide

About the Audio Trimmer & Converter

Cut the part of a song, podcast or voice memo you want, smooth the edges with a fade, and save it in the format you need. Your browser decodes the file and the encoders run as WebAssembly on your own computer, so even a long recording is never uploaded and there is no size limit beyond your device's memory.

Which format should I choose?

  • MP3 — plays everywhere, from phones to car stereos. 192 kbps sounds transparent to most listeners; 128 kbps is fine for speech.
  • WAV — uncompressed, so nothing is lost. Use it for editing in another program, or when an app requires WAV. Files are about ten times larger than MP3.
  • OGG Vorbis — smaller than MP3 at the same quality and free of patents. Common in games and on the web; not supported by some Apple apps.

Making a ringtone

Select up to 30 seconds, add a short fade in and out of about half a second so the loop does not click, and save as MP3. On Android, copy the file to the Ringtones folder. On iPhone, ringtones must be M4R files added through Finder or GarageBand.

How to use it

  1. 1Choose or drop an audio file (or a video with sound).
  2. 2Drag across the waveform, or type the start and end times.
  3. 3Press Play to check the cut, and add fades or volume if needed.
  4. 4Pick MP3, WAV or OGG and click Export, then Download.

Frequently asked questions

Is my audio uploaded?

No. Decoding, trimming and encoding all happen in your browser, so the file never leaves your computer.

Can I extract the audio from a video?

Yes. Open an MP4 or WebM video and the tool reads its soundtrack, which you can trim and save as MP3, WAV or OGG.

Does converting MP3 to WAV improve quality?

No. WAV keeps exactly what is there, but it cannot restore detail an MP3 has already removed. Convert to WAV when a program needs it, not for better sound.

Why can I not save as M4A or FLAC?

Browsers can read those formats but have no built-in encoder for them. MP3, WAV and OGG cover nearly every use.

How do I remove a section from the middle?

Select the part you do not want, switch to Remove selection, and export. The pieces before and after are joined with a tiny crossfade so there is no click.

Can I record my voice?

Yes. Click Record from mic, allow the microphone, and press Stop when you are done. The recording opens in the editor, ready to trim and save as MP3, WAV or OGG.

What does normalise do?

It raises or lowers the whole clip so its loudest moment sits just below the maximum (−1 dB), making quiet recordings louder without clipping.