Audio Fade In/Out Editor - Add Fades to Audio Files

Add smooth fade in and fade out effects to audio files. Customize duration for professional transitions. Supports MP3, WAV, OGG. Browser-based, no uploads.

Select Audio File

Drop audio file here or click to browse

Supports MP3, WAV, OGG, FLAC, AAC, and more

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Frequently Asked Questions

A fade effect gradually changes the volume of audio over time. A fade-in starts silent and increases to full volume, while a fade-out decreases from full volume to silence. Fades create smooth transitions and prevent abrupt audio starts or endings.

Use fade-in to smooth harsh audio beginnings, introduce tracks gradually, or transition from silence. Use fade-out for natural endings, preventing abrupt cutoffs, creating seamless loops, or transitioning between tracks. Both are essential for professional audio production.

For music: 2-3 seconds for subtle fades, 4-6 seconds for dramatic effect. For podcasts/voice: 0.5-1 second for quick transitions. For ambient/background audio: 5-10 seconds for gradual blending. Start with 2 seconds and adjust based on your content.

Fades are applied through amplitude adjustment, which is a lossless operation. However, the file must be re-encoded for lossy formats (MP3, OGG), which may introduce minimal quality loss. Lossless formats (WAV, FLAC) maintain perfect quality.

Yes! You can set both fade-in and fade-out durations independently. The tool applies both effects in a single pass, so there's no cumulative quality loss from multiple operations.

This tool supports all common audio formats including MP3, WAV, OGG, FLAC, AAC (M4A), and more. FFmpeg handles format detection automatically. The output format matches your input format.

This tool uses logarithmic (dB-based) fading for natural-sounding volume transitions. This curve mimics human perception of loudness, producing smoother fades than linear volume changes.

Yes! After processing, you can play back the result directly in the browser. Use the audio player controls to check that the fade sounds right before downloading.

Processing happens in your browser using FFmpeg WebAssembly. Most devices handle files up to 100MB or 30 minutes comfortably. Larger files work but may be slower depending on your device.

No. All processing happens entirely in your browser. Your audio files never leave your device, ensuring complete privacy and security. The tool even works offline after the page loads.

Audio Fade In/Out Editor - Add Fades to Audio Files

Select Audio File

▶Fade In

◀Fade Out

Fades Applied

How to Use

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