Fade In/Out
FreeAdd fade-in and fade-out effects with adjustable curve control
fadeinoutaudiotransition
All Audio ToolsHow it works
1
Upload
Add an audio file to apply fade effects to.
2
Configure
Set the fade-in duration at the start and fade-out duration at the end, with curve type selection.
3
Apply
Preview the result and download. All processing is done locally in your browser.
Frequently asked questions
What fade curve types are available?+
You can choose between linear, exponential, and logarithmic curves. Each produces a different feel — linear is steady, exponential ramps quickly, and logarithmic is more gradual.
Can I apply only a fade-in or only a fade-out?+
Yes. Set either duration to zero to skip that fade. You can apply just a fade-in, just a fade-out, or both at the same time.
Does adding a fade change the file length?+
No. Fades are applied to the existing audio. The fade-in gradually raises volume from silence at the start, and the fade-out lowers it to silence at the end, without adding or removing time.
Are my audio files sent to a server?+
No. Everything is processed locally in your browser using the Web Audio API. Your files never leave your device.