Free Online Audio Editor — Trim, Fade, Normalize & Export to WAV or MP3
Edit and convert your audio directly in your browser.
Trim, fade in/out, adjust gain or normalize volume, and export to WAV or MP3 in seconds — all without uploading anything. 100 % private and free.
In-Browser Audio Editor (Timeline • WAV & MP3 Export)
Original
Preview (Edited)
window.AUDX_LAME_URL if needed.How to Use the Audio Editor
Drag & drop any audio file (MP3, WAV, M4A, OGG…).
Set your trim range with start and end times.
Add fade-in or fade-out durations (in seconds).
Adjust gain or toggle normalize to equalize volume.
Choose MP3 bitrate for output quality and size.
Click Render Preview, then Export WAV or Export MP3.
Tip: For speech or podcasts, 128–192 kbps MP3 works great. For music, use 256–320 kbps for maximum quality.
Why Use Our In-Browser Audio Editor
Whether you’re editing voice recordings, music clips, or podcasts, this tool gives you the essentials without requiring downloads or accounts.
Everything happens locally in your browser — your audio files never leave your device.
Key benefits
Edit and convert WAV ↔ MP3 instantly
Apply trim, fade-in/out, gain, normalization
Export high-quality WAV (16-bit PCM) or MP3
Free, private, no watermarks or sign-ups
Works in Chrome, Edge, Firefox, and Safari
WAV vs MP3: Which Should You Choose?
WAV (Waveform Audio File Format)
Uncompressed, lossless, professional-grade audio.
Ideal for editing, mixing, or archiving.
MP3 (MPEG-1 Audio Layer III)
Compressed, smaller file size, widely supported.
Perfect for web uploads, streaming, and sharing.
Quick guide
Use WAV when you need full-quality or want to re-edit later.
Use MP3 for lightweight files to publish or share online.
Frequently Asked Questions
Is this tool free?
Yes — 100 % free with no watermarks, ads, or hidden costs.
Do you upload my files?
No. All editing and conversion occur entirely in your browser. Your files are never uploaded, stored, or tracked.
What audio formats can I load?
Any format supported by your browser: MP3, WAV, OGG, M4A, AAC, etc.
Does it reduce quality?
WAV exports are lossless. MP3 exports use adjustable bitrates to balance quality and file size.
Can I normalize volume automatically?
Yes — check the “Normalize” option to automatically boost or lower volume to around –1 dBFS.
Can I use this on mobile?
Yes, but long files (> 10 minutes) may take longer to render on mobile devices.
Privacy & Security
Your files never leave your device.
The entire editing and encoding process runs locally through the Web Audio API and lame.js MP3 encoder — ensuring total privacy and instant processing.
Start Editing Now
Trim, fade, and normalize your audio directly in your browser.
Export to WAV or MP3 with one click — fast, secure, and completely free.