Upload an audio file, set your fade-in and fade-out durations, choose a curve, and preview the change instantly. Download the faded clip as a WAV file.
Set fade durations and press Apply fades.
Your audio file is decoded and faded locally. Nothing is uploaded to a server.
Fades are computed with the Web Audio API the moment you press Apply, no waiting on a server.
Fade as many clips as you like, with no account, watermark or usage limit.
Fading a track in and out avoids abrupt starts and hard cuts at the end. This free online tool applies a fade-in envelope at the start of your audio and a fade-out envelope at the end, entirely in your browser.
A fade envelope is a gain multiplier that ramps between 0 and 1 over time. The shape of that ramp changes how the fade sounds, which is why this tool offers two curve types.
Volume rises or falls at a constant rate. It is simple and predictable, but can sound like it loses energy a little too quickly in the middle of the fade.
Volume follows a curved, sine-based ramp so perceived loudness changes at a more even rate, which usually sounds smoother to the ear.
Fade-in and fade-out lengths are set separately, so you can, for example, fade in quickly over half a second and fade out slowly over five seconds.
If your fade-in and fade-out durations would overlap on a short clip, both are scaled down proportionally so they meet cleanly without unexpected silence.
A linear fade changes volume at a constant rate, which can sound like it dips in the middle when crossfading. An equal-power fade uses a curved ramp so the perceived loudness changes more smoothly, which usually sounds more natural.
Yes. Set the fade-in and fade-out lengths independently in seconds, from zero up to the length of the file.
If the fade-in and fade-out regions would overlap, they are automatically scaled down so they meet in the middle without cutting into each other unexpectedly.
Any format your browser can decode, including MP3, WAV, M4A and OGG. The faded result is exported as a WAV file.
No. The fades are applied entirely in your browser using the Web Audio API. Your file never leaves your device.