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Crossfade audio mixer
Mix audio files with crossfade
This tool joins several audio files into one mix with crossfade: neighboring tracks overlap for a short time, so the transition sounds smoother than a hard cut.
Set the transition duration in seconds. The end of each file fades out while the beginning of the next file fades in. A larger value creates a longer overlap.
The mix is rendered on the server and can be exported as MP3, WAV, OGG, OPUS, FLAC, M4A or AAC. It is useful for drafts, intros, short playlists, podcast transitions and quick checks of how fragments blend together.
✓Crossfade is a smooth overlap between two neighboring audio files: one fragment gets quieter while the next gets louder.
✓The service does not only place tracks one after another; it creates a shared transition zone between each neighboring pair.
✓Crossfade duration is set in seconds. Speech usually needs a short transition, while music can use a longer one.
✓File order affects the result: the mix is assembled from top to bottom using the selected source list.
✓The result is exported in the selected format, and the first source format is selected by default when it is supported.
✓Use it for intros, demo playlists, podcast transitions, music fragment joins and quick draft mixes.
Supported formats
This tool accepts these formats. Uncommon containers and modern web formats may be normalized or converted on the server before processing.
Audio
3GA
AAC
AC3
AIF
AIFF
AMR
APE
AU
CAF
EAC3
FLAC
KAR
M4A
M4P
M4R
MID
MIDI
MMF
MKA
MPC
MP2
MP3
MPGA
OGA
OGG
OMA
OPUS
QCP
RA
RMI
VOC
WAV
WEBA
WEBM
WMA
A damaged file or a non-standard codec can still fail even when the extension is supported.
