Trim Audio Online — Free, No Install
Need to trim an MP3, cut a WAV, or convert audio formats? Do it right here — no downloading Audacity, no Adobe subscription, no sign-up. Just drop your file and edit.
No Install, Any Device
Runs entirely in your browser. Works on Windows, Mac, Linux, and Chromebooks — no 100 MB download for a 30-second trim.
Trim, Cut & Export in Seconds
Drop an MP3 or WAV, drag to select the part you want, hit trim, and download. Most edits take under a minute.
Convert MP3, WAV, OGG & More
Import MP3, WAV, OGG, AAC, FLAC, or WebM. Export as WAV (lossless), MP3, or OGG with configurable bitrate.
Your Files Stay Private
All processing happens locally using the Web Audio API. Nothing is uploaded — your audio never leaves your device.
Trim Audio Online — No Install Required
You shouldn't need to download a 100 MB desktop app just to trim an MP3 or cut a section from a WAV file. Free Tool Shed's Audio Editor lets you trim audio online, convert between formats, and apply effects — all in your browser. No installation, no account, no subscription. It works on any device: Windows, Mac, Linux, Chromebooks, even a locked-down work computer.
Unlike Adobe Audition ($22.99/month) or Audacity (desktop-only), this tool is built for quick edits: drop a file, make your cut, download the result. Most tasks take under a minute. Need more? Apply fade in/out, normalize volume, reduce noise, reverse audio, or convert WAV to MP3 — all processed locally. Your files never leave your device.
Features
- Visual waveform display with per-pixel peak rendering
- Click-and-drag region selection on the waveform
- Trim (crop) audio to selection
- Delete selected region and join remaining parts
- Silence selected region
- Split audio at the playhead position
- Fade in and fade out effects
- Normalize volume to peak amplitude
- Reverse audio (entire track or selection)
- Amplify with configurable gain factor
- Noise reduction with adjustable strength
- 50-step undo/redo history
- Export as WAV (lossless), MP3, or OGG
- Configurable bitrate for compressed formats
- Zoom and scroll with mouse wheel
- Keyboard shortcuts (Space, Delete, T, Ctrl+Z/Y)
- Time grid overlay with automatic scaling
- Real-time playhead animation during playback
- Selection-only playback preview
- Mute toggle and gain control
- Drag-and-drop file import
- Supports MP3, WAV, OGG, AAC, FLAC, and WebM input
- Export preferences saved across sessions
- Client-side only — audio never leaves your browser
How to Trim Audio Online (5 Steps)
1. Import your audio file
Drag and drop an audio file onto the editor, or click to browse. Supported formats include MP3, WAV, OGG, AAC, FLAC, and WebM. Your file is decoded locally in your browser — nothing is uploaded.
2. Navigate the waveform
Use the visual waveform to see your audio. Scroll to pan left and right, or hold Ctrl and scroll to zoom in and out. Click anywhere to position the playhead, then press Space to play.
3. Select a region
Click and drag on the waveform to highlight a region. The selection is shown in green. Use selection-only playback to preview exactly what you've selected before making edits.
4. Edit and apply effects
Use the toolbar buttons to trim, delete, or silence the selection. Apply effects like fade in, fade out, normalize, reverse, amplify, or noise reduction from the effects bar below the waveform.
5. Export your edited audio
Choose your export format (WAV for lossless, MP3 or OGG for compressed) and bitrate, then click Download. The file is encoded in your browser and saved directly to your device.
Free Tool Shed vs Paid Audio Editors
| Feature | Free Tool Shed | Adobe Audition | Audacity | TwistedWave |
|---|---|---|---|---|
| Price | Free forever | $22.99/mo | Free | $79.90 (Mac) |
| Installation | None (browser) | Desktop app | Desktop app | Desktop/Web |
| Account Required | No | Yes (Adobe ID) | No | Yes (web) |
| Waveform Editor | Yes | Yes | Yes | Yes |
| Trim / Cut / Delete | Yes | Yes | Yes | Yes |
| Fade In / Fade Out | Yes | Yes | Yes | Yes |
| Normalize | Yes | Yes | Yes | Yes |
| Reverse Audio | Yes | Yes | Yes | Yes |
| Noise Reduction | Basic | Advanced (AI) | Advanced | Basic |
| Multi-track | Single track | Unlimited | Unlimited | Single track |
| WAV Export | Free | Included | Free | Free (limited) |
| MP3 / OGG Export | Free | Included | Free (with plugin) | Paid |
| Undo / Redo | 50 steps | Unlimited | Unlimited | Unlimited |
| Data Privacy | Client-side only | Cloud account | Local only | Cloud (web) |
| File Size Limit | Browser memory | Disk space | Disk space | 5 min (free web) |
Frequently Asked Questions
Why use this instead of Audacity?
Audacity is more powerful — multi-track, VST plugins, spectral editing. But it requires a desktop install. This tool is for quick jobs: trim an MP3, cut a clip, convert a format. Open a URL, drop your file, done in under a minute. No download, works on Chromebooks and locked-down machines, nothing to uninstall afterward.
Is this audio editor really free?
Yes, completely free. No hidden fees, no premium tiers, and no sign-up required. The tool is ad-supported so it can remain free for everyone.
Do I need to install anything?
No. It runs entirely in your browser. No 100 MB download, no plugins, no extensions. Open the page and start editing — that's the whole point.
How do I trim an MP3 online?
Drop your MP3 file onto the editor (or click to browse). Click and drag on the waveform to select the section you want to keep, then click the Crop button or press T. Hit Download to save the trimmed file. The whole process takes about 30 seconds.
Can I convert WAV to MP3?
Yes. Import any WAV file, then choose MP3 from the export format dropdown and select your bitrate (128–320 kbps). Click Download. The conversion happens entirely in your browser.
What audio formats are supported?
Import: MP3, WAV, OGG, AAC, FLAC, and WebM. Export: WAV (lossless), MP3, or OGG with configurable bitrate.
Is my audio data private?
Yes. All processing happens locally in your browser using the Web Audio API. Your files are never uploaded to any server. We can't see them and neither can anyone else.
Can I undo my edits?
Yes. The editor keeps a 50-step undo/redo history. Ctrl+Z to undo, Ctrl+Y to redo. You can also use the toolbar buttons.
Does the noise reduction actually work?
For light background noise (hiss, hum, room tone), yes. It estimates the noise floor from quiet sections and attenuates below that threshold. Adjust strength from 0–1. For heavy noise, apply multiple passes. It's not as advanced as Audacity's spectral subtraction, but it handles common cases.
Is there a file size limit?
No hard limit — it depends on your browser's available memory. Files under 100 MB work smoothly. Very long recordings (1+ hour) may use significant memory.