How to use the Audio Trimmer
- Choose or drop an audio file — MP3, WAV, M4A, OGG, FLAC and more.
- Drag the start and end sliders (or type exact seconds). The waveform shows the selection.
- Add a fade in or fade out and press Preview.
- Click Download clip to save the selection as WAV.
Cut audio privately in your browser
The file is decoded by your browser’s Web Audio engine, so nothing is uploaded and even long files open quickly. Make a ringtone from the chorus of a song, cut the silence from the start of a voice memo, or pull a quote out of an interview.
The clip is saved as WAV, which keeps full quality and opens everywhere. Want a recording to start from? Use the Voice Recorder. To glue several clips together, use Merge Audio; to change the tempo, the Audio Speed Changer.
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Tools that pair well with the Audio Trimmer
- Reverse Audio — Play any sound backwards: choose an audio file or record your voice, hear it reversed instantly and download it as WAV.
- Mic Test — Check that your microphone works and sounds right before a call, stream or recording — see the live level, watch the waveform and play back a short test recording.
- Screen Recorder — Record your entire screen, one window or a browser tab — with your microphone and the tab’s or system audio.
- Webcam Recorder — Record video with sound from your webcam, take photos, choose your camera and resolution, and download the clips.
Frequently asked questions
Which formats can I trim?
Any format your browser can play: MP3, WAV, M4A / AAC, OGG, Opus, FLAC and WebM audio in most browsers.
Why is the download a WAV file?
WAV keeps the full quality of your clip and works in every player and editor. It is larger than MP3, so compress it later if size matters.
Is my file uploaded?
No. It is decoded and cut in your browser.
Can I install Audio Trimmer as a web app and use it offline?
Yes. Audio Trimmer is an installable web app (PWA) — installed from your browser, not downloaded from an app store. Click Install app at the top of this page in Chrome or Edge (Windows, macOS, Linux, ChromeOS) or on Android, use Share → Add to Home Screen on iPhone and iPad, or File → Add to Dock in Safari 17+ on a Mac. It then opens in its own window with its own icon, and because it runs entirely in your browser it keeps working offline. Firefox on desktop can’t install web apps. How installing works.