- Upload your audio — drag & drop or click to browse. Supports MP3, WAV, OGG, M4A, FLAC, AAC.
- Set trim points — use the Start and End sliders to select the section you want to keep.
- Preview — click Play Selection to listen to just the trimmed portion.
- Export — click Trim & Export to download the trimmed audio as a WAV file.
What Is the Audio Trimmer?
The Audio Trimmer is a free, professional tool for cutting audio files directly in your browser. Load any audio file, visually select the section you want to keep using the waveform display, preview your selection, and export the trimmed audio as a high-quality WAV file — all without uploading anything to a server.
Unlike online audio editors that require uploading your files to remote servers, this tool processes everything locally using the Web Audio API. Your audio stays on your device at all times.
Key Features
- Waveform Visualization — See your audio waveform rendered on a canvas. The visual display helps you identify the exact sections to trim.
- Precise Trim Controls — Adjustable Start and End sliders with time display down to tenths of a second. The selection is highlighted on the waveform.
- Play Selection Preview — Listen to just the selected portion before trimming. A moving playhead shows your current position on the waveform.
- Drag & Drop Upload — Simply drag your audio file onto the drop zone, or click to browse. Supports MP3, WAV, OGG, M4A, FLAC, AAC.
- WAV Export — Trimmed audio is exported as uncompressed WAV for maximum quality. No re-encoding artifacts.
- Audio Info Display — Shows duration, channel count, and sample rate of the loaded file.
- 5-Language Support — Full interface in English, Arabic, Spanish, Portuguese, and Chinese.
- 100% Client-Side — No server, no upload, no tracking. Everything runs in your browser.
How It Works
The Audio Trimmer uses the Web Audio API to decode audio files into raw PCM data. The waveform is rendered on an HTML Canvas by analyzing the audio samples. When you trim, the tool creates a new AudioBuffer containing only the samples between your start and end points, then encodes it as a WAV file using pure JavaScript.
Use Cases
- Ringtone Creation — Cut your favorite section from a song to create a custom ringtone.
- Podcast Editing — Quickly trim intros, outros, or unwanted sections from podcast recordings.
- Music Production — Extract samples or loops from longer audio files for use in your DAW.
- Voice Notes — Clean up voice recordings by removing silence or unwanted sections at the beginning and end.
- Sound Effects — Isolate specific sound effects from longer audio recordings.
Privacy & Security
This tool runs 100% in your browser. Your audio files are never uploaded to any server. All processing happens locally using the Web Audio API. No data leaves your device.
Comparison with Alternatives
| Feature | Serverless Tools | mp3cut.net | Audacity |
|---|---|---|---|
| Free | 100% Free | Free + ads | Free |
| No Upload | Yes | No (server) | Yes (desktop) |
| No Install | Yes (browser) | Yes | No (install) |
| Waveform | Yes | Yes | Yes |
| Privacy | 100% local | Server upload | 100% local |