Audio Trimmer
Cut and trim audio files with a visual waveform editor. Drag handles to select the region you want, preview it, and export as WAV.
Drop audio file here or click to upload
Supports MP3, WAV, OGG, M4A
What is an Audio Trimmer?
An audio trimmer is a tool that lets you cut unwanted sections from audio files, keeping only the portion you need. Whether you're editing a podcast episode, extracting a clip from a song, trimming silence from the start or end of a recording, or cutting a voice memo down to size, an audio trimmer is the fastest way to get the job done. ToolMagic's online audio trimmer processes everything directly in your browser using the Web Audio API — your files are never uploaded to any server, ensuring complete privacy and instant results. It supports MP3, WAV, OGG, and M4A formats, displays a detailed waveform visualization, and lets you drag start and end handles to precisely select the region you want to keep. With zoom controls, keyboard shortcuts, and real-time playback preview, it rivals desktop audio editors while being completely free and requiring no installation or signup.
How to Trim Audio Online
- Upload your audio: Drag and drop an audio file onto the upload area, or click to browse. Supports MP3, WAV, OGG, and M4A formats.
- View the waveform: Once loaded, the full audio waveform is displayed on a visual timeline with time markers.
- Select trim region: Drag the green start handle and red end handle to define the section you want to keep. The selected region is highlighted.
- Preview your selection: Click "Play Selection" to hear only the trimmed portion. Use "Play Full" to hear the entire file for reference.
- Zoom for precision: Use the zoom controls to zoom into the waveform for frame-accurate trimming of short sections.
- Export: Click "Export WAV" to download your trimmed audio as a high-quality WAV file.
Features
- Visual waveform editor: See your entire audio file as a detailed waveform, making it easy to identify sections visually.
- Draggable trim handles: Precisely select start and end points by dragging handles directly on the waveform timeline.
- Real-time playback: Preview your selection or the full audio with a moving playback indicator on the waveform.
- Zoom controls: Zoom in and out on the waveform for sample-accurate editing of short passages.
- Keyboard shortcuts: Space to play/pause, arrow keys to nudge trim handles for fine-tuning without a mouse.
- Multiple format support: Load MP3, WAV, OGG, and M4A files — export always as lossless WAV.
- File information display: View duration, file size, format, and sample rate at a glance.
- 100% client-side: All processing happens in your browser. No files are uploaded anywhere.
Use Cases
- Podcast editing: Remove intros, outros, or awkward pauses from podcast recordings before publishing.
- Ringtone creation: Cut your favorite part of a song to create a custom ringtone or notification sound.
- Voice memos: Trim voice recordings to keep only the important information and remove dead air.
- Music production: Extract specific sections of audio samples for use in music projects and remixes.
- Presentations: Cut audio clips to the exact length needed for slides or video presentations.
- Social media: Trim audio to fit platform-specific length requirements for stories, reels, or posts.
Tips & Tricks
- Use keyboard arrow keys to nudge trim handles by small increments for precise selections.
- Zoom in on the waveform to avoid cutting mid-word or mid-beat — visual peaks make it easy to find clean cut points.
- Preview your selection before exporting to make sure you haven't cut too much or too little.
- For best quality, export as WAV (lossless) and convert to MP3 afterwards if you need a smaller file.
- Combine with the Audio Volume Changer to adjust levels after trimming.
Frequently Asked Questions
What audio formats can I trim?
You can upload and trim MP3, WAV, OGG, and M4A audio files. The tool uses your browser's built-in audio decoding, so any format your browser supports will work.
What format is the exported file?
Trimmed audio is exported as a WAV file (uncompressed PCM). This ensures lossless quality. You can convert to MP3 or other formats using a separate converter if needed.
Is there a file size limit?
There's no hard limit, but very large files (over 100MB) may be slow to process depending on your device. Files under 50MB work best for smooth performance.
Are my audio files uploaded to a server?
No. All processing happens entirely in your browser using the Web Audio API. Your files never leave your device, ensuring complete privacy.
Can I trim audio on my phone?
Yes! The audio trimmer is fully responsive and works on mobile browsers. Touch and drag the handles on the waveform to select your trim region.
What are the keyboard shortcuts?
Press Space to play/pause, Left Arrow to nudge the start handle earlier, and Right Arrow to nudge the end handle later. These help with precise editing.
Can I undo a trim?
Since the tool is non-destructive (your original file is never modified), you can simply re-adjust the handles and export again. The original audio stays loaded until you upload a new file.
How accurate is the trimming?
The trimming is sample-accurate. Use the zoom feature to get precise down to individual audio samples, which is more accurate than most online tools.
Related Tools
After trimming, adjust your audio levels with the Audio Volume Changer, or combine multiple clips using the Audio Joiner. For text content, try the Word Counter.