How to add fades in 3 easy steps
- 1
Add your audio file
Drop an MP3, WAV, OGG, M4A or WebM file into the box, or browse your device.
- 2
Set the fades
Drag the fade-in and fade-out sliders — 0 to 10 seconds each — and adjust the overall volume if needed.
- 3
Preview and download
Press 'Apply fades' and play the result. Download it as a lossless WAV file.
Why use the audio fader tool from Super Utility Hub?
Give your audio a professional touch with smooth fades and volume control. A gentle fade-in lets a podcast or song start naturally, a fade-out avoids the harsh cut at the end, and a volume trim keeps everything at the right level.
Three simple sliders control everything: fade-in length, fade-out length and overall volume. Slide them, preview the result, and download a lossless WAV with the changes baked in.
Runs fully in your browser with no uploads — your audio never leaves your device. Free and unlimited.
- Processes everything in your browser — no upload servers involved
- Free forever with unlimited uses
- Works on Windows, macOS, Linux, Android and iOS
- No watermark or branding on your output, ever
Frequently asked questions
What do the sliders do?
Fade-in fades the audio up from silence at the start, fade-out fades it down to silence at the end, and volume scales the whole file (0%–200%).
Does the fade curve sound natural?
Yes — the tool uses a linear ramp, which is the standard, natural-sounding curve used by most editors.
Can I fade only the start or only the end?
Yes. Leave the other slider at 0 seconds and only one fade is applied.