Load an audio file, set the fade in and fade out durations in seconds and pick a curve. Press Apply Fades to render the result and download it as a WAV.
A linear fade changes amplitude at a constant rate, which can sound like it drops off quickly at the end. An exponential fade follows a curve closer to how we perceive loudness, so it generally sounds smoother on music.
Yes. Set the fade you do not want to zero seconds and only the other end is processed. This is handy when a song already ends cleanly but starts with an abrupt cut.
No. Fades are applied to the existing samples by scaling their amplitude, so the exported file has exactly the same duration as the original — only the first and last moments become quieter.