Free Browser-Based Audio Editor for MP3, WAV, OGG, FLAC, and AAC
Cut. Convert. Ship Audio.
Trim, convert, and fade 6 audio formats with an interactive waveform editor. All processing runs locally via WebAssembly — files never leave your device.
SliceTune is a browser-based audio editor that handles trimming, format conversion, and fade effects without uploading files to a server. It accepts 6 input formats (MP3, WAV, OGG, FLAC, AAC, and M4A) and exports to 5 formats (MP3, WAV, OGG, FLAC, AAC). All audio processing runs locally through FFmpeg compiled to WebAssembly — your files stay on your device the entire time.
The editor displays an interactive waveform so you can see exactly where to place your trim points. Select a region by clicking and dragging, set fade-in and fade-out durations, choose your output format and bitrate, then export. The free tier covers MP3 and WAV export for files up to 10 minutes. Pro ($3/mo) removes the duration cap and unlocks OGG, FLAC, and AAC output.
Professional Audio Editing, Zero Installs
Everything you need to trim, convert, and polish audio clips — running entirely in your browser.
Precision Waveform Editor
Visual waveform display with click-and-drag selection. Zoom in for sample-accurate trimming of any audio clip.
Multi-Format Export
Convert between MP3, WAV, OGG, FLAC, and AAC. Choose bitrate and quality settings for the perfect output.
Fade In & Fade Out
Apply smooth fade effects to the beginning and end of your audio. Configurable duration for professional transitions.
Total Privacy
Your audio files never leave your browser. All processing happens locally using WebAssembly — zero server uploads.
Three Steps. Zero Friction.
No installs, no waiting for server processing.
Drop Your Audio
Drag and drop any audio file — MP3, WAV, OGG, FLAC, AAC, or M4A. No size limits, no uploads.
Edit Visually
Use the interactive waveform to select your trim region. Adjust start/end points, add fades, pick your output format.
Download Instantly
Hit export and your processed file downloads immediately. All processing happens in your browser — private and fast.
Pricing
Free to start. Pro for power users. Cancel anytime.
Prices shown exclude applicable taxes.
Free
- Unlimited operations
- Files up to 10 minutes
- MP3 & WAV export
- Waveform editor
- Trim & cut
- Fade in / out
- OGG, FLAC, AAC export
Pro
- Everything in Free
- No file duration limit
- All formats (OGG, FLAC, AAC)
- Fade in / out
- Ad-free experience
- Cancel anytime
Crate Pass
- All Cashew Crate apps
- Everything in Pro
- No ads anywhere
- New apps added regularly
- Cancel anytime
Before you subscribe
What you get: SliceTune lets you trim, cut, convert, and add effects to audio files directly in your browser. Your files never leave your device.
Pricing: $3/month for this app (cancel anytime), or $15/month for Crate Pass (all apps). Prices shown exclude applicable taxes.
Support: [email protected]