What does Fade In / Fade Out do?
Add smooth fade-in and fade-out effects to the start and end of audio.
Fade In / Fade Out accepts MP3, WAV, OGG, M4A, AAC, FLAC and WEBM files, and produces MP3 and WAV output.
Your MP3, WAV, OGG, M4A, AAC, FLAC and WEBM files are processed locally in your browser — they are never uploaded to our servers.
How to use Fade In / Fade Out
- 1Drag and drop your file onto the upload area, or click “Choose file”.
- 2Adjust the fade in / fade out settings to suit your needs.
- 3Click the main action button and wait a moment while it is processed on your device.
- 4Preview the result and download your MP3 and WAV file.
Supported formats
- Input
- MP3WAVOGGM4AAACFLACWEBM
- Output
- MP3WAV
Frequently asked questions
Is Fade In / Fade Out free?
Yes. Fade In / Fade Out is completely free with no sign-up and no watermarks.
Are my files uploaded?
Your MP3, WAV, OGG, M4A, AAC, FLAC and WEBM files are processed locally in your browser — they are never uploaded to our servers.
Is there a file size limit?
Free usage supports files up to 200 MB. Because processing happens on your device, very large files depend on your device's available memory.