Audio Cutter
Trim MP3, WAV or OGG files with a waveform you can see, and export the selection as WAV.
Trim Audio Without Uploading It Anywhere
Cutting a few seconds out of a recording should not require an account, a desktop install, or handing the file to a stranger. Yet almost every free audio cutter works the same way: upload, wait, download, and trust that the copy on the server really is deleted. For an interview, a voice memo or a client recording, that is a poor trade for ten seconds of work.
This cutter decodes the audio with the browser’s own decoder, draws the waveform so you can see where the sound actually is, and writes the trimmed region straight back out as a WAV file. The audio never touches a network. You can disconnect entirely once the page has loaded and it still works.
Key features
- A waveform you can read — the selected region is highlighted in colour so you can see silence, speech and music before you commit to a cut.
- Preview before you export — play just the selection to check the in and out points, rather than downloading and listening in another app.
- Sample-accurate trimming — the cut happens on exact sample boundaries, so there is no fade, no re-encode and no drift.
- Reads what your browser reads — MP3, WAV, OGG, M4A, AAC, FLAC and Opus all decode, because the platform decoder is doing the work.
- 16-bit WAV output — lossless relative to the decoded source and openable by every editor, phone and DAW without a codec.
This tool runs entirely inside your browser using native Web APIs. Your files and text are never uploaded to a server, never logged and never shared with third parties.
How to use: Audio Cutter
- Add your audio
Drop a file onto the box or click to browse. It is decoded locally and the waveform appears within a second or two for most recordings. - Choose the region
Drag the start and end sliders. The highlighted section shows exactly what will be kept, and the selection length updates as you move. - Listen to the selection
Press Play to hear only the highlighted region. Adjust the handles until the in and out points land where you want them. - Download the trimmed file
Press Trim and download. The new WAV is written in memory and saved to your device immediately.
Technical specifications
| Processing location | Entirely in your browser — no server round trip |
|---|---|
| Data uploaded | None. Files and text never leave your device |
| Price | Free — no account, no trial, no usage cap |
| Category | Audio |
| Works offline | Yes, once the page has loaded |
| Browser support | Chrome 90+, Edge 90+, Firefox 90+, Safari 15+ |
| Interface languages | English, 中文, हिन्दी, Español, العربية |
Frequently asked questions
Is my audio uploaded to a server?
No. The file is read with the FileReader API, decoded by the browser, trimmed in memory and written back out as a WAV. There is no upload step and no server component at all — you can prove it by disconnecting from the network after the page loads.
Why does it export WAV rather than MP3?
Browsers ship MP3 decoders but not MP3 encoders, so producing an MP3 would mean loading an encoder from a third party or sending the audio away. WAV keeps everything local and lossless. If you need MP3, re-encode the exported WAV in any converter you already trust.
Can I use this to make a ringtone?
Yes — trim the section you want and export it. Most phones accept WAV directly; iPhones want M4A, so convert the exported file afterwards if you are targeting iOS.
Is there a file size limit?
None imposed by us. The practical ceiling is your device memory, since the decoded audio is held uncompressed while you work. An hour of stereo at 44.1 kHz is roughly 600 MB decoded, which is comfortable on a laptop and heavy on an older phone.
Does trimming reduce the quality?
No. The samples inside the selection are copied unchanged into the new file. The only conversion is to 16-bit on export, which is the same depth as a CD and as the source for almost every consumer recording.