Audio Fade In/Out Online – Smooth & Free
Add professional fade in and fade out effects to MP3, WAV, M4A and other audio files instantly in your browser. No upload, perfect for intros, outros & smooth transitions.
Audio Fade In/Out – Free & Private
Add smooth fade-in and fade-out effects to your audio directly in browser – no upload, no server.
Drag & drop audio file here (MP3, WAV, M4A, OGG, etc.)
or
Upload audio • MP3, WAV, M4A & more • Adjustable fade duration • Batch support • Up to 100 MB • 100% client-side • Real-time preview
What You Can Do With This Fade Tool
- Smooth fade in – gentle volume increase at start
- Smooth fade out – gradual volume decrease at end
- Custom durations – set fade lengths in seconds/ms
- Batch apply – add fades to multiple files at once
- Real-time preview – hear fades before saving
Why Use Waridi Tech Audio Fade?
- 100% private – audio stays on your device
- Fast client-side processing – instant application
- Supports MP3, WAV, M4A, OGG, AAC & more
- Adjustable fade in/out – precise control
- Batch fading – edit multiple tracks quickly
- Real-time preview – listen to fades immediately
- Lossless editing – no quality loss
- Free forever – no signup, no ads, no watermarks
- Offline capable – install as PWA
Audio Fade Comparison
| Feature | Waridi Tech | Other Online Tools |
|---|---|---|
| Privacy | 100% client-side | Often uploads audio |
| Speed | Instant (browser processing) | Server-dependent delays |
| Cost | Free, unlimited | Free with limits / paid |
| Batch Support | Yes | Limited or premium |
| Offline Support | Yes (PWA) | No |
Frequently Asked Questions
Is this fade in/out tool free?
Yes – completely free, no signup, no limits or hidden fees.
What audio formats are supported?
MP3, WAV, M4A, OGG, AAC and more.
Is it private and safe?
Yes – 100% client-side. Your audio never leaves your device.
Can I adjust fade duration?
Yes – set custom fade in and fade out lengths (seconds or milliseconds).
Can I apply fades to multiple files?
Yes – batch fade support. Upload several files at once.
Can I use it offline?
Yes – install as PWA to use without internet after first load.
What is the maximum file size?
Up to 100 MB per file (browser memory dependent). Shorter files process faster.
Does adding fades affect quality?
No – fades are applied losslessly. Original audio quality is preserved.
Related Audio Tools
More Free Tools
- Audio Editor – full suite of tools
- Video Converter – MP4, WebM, GIF & more
- Compress Image – reduce image size
- Document Converter – PDF, Word, Excel
- Social Media Downloader – videos & photos
Ready to Add Fade In/Out?
Fast, private, free – create smooth audio transitions instantly. No upload, no limits.
Available Worldwide
Works in modern browsers on desktop, tablet and mobile. Updated March 2026.