What audio formats can I combine?

You can upload MP3, WAV, AAC, M4A, OGG, and FLAC tracks. Different formats and sample rates are automatically unified.

Are my audio files sent to a server?

No. Decoding and crossfade concatenation run 100% locally on your computer via the HTML5 Web Audio API.

Crossfading fades out the end of the previous track while simultaneously fading in the beginning of the next track for a smooth, gapless transition.

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Crossfade DSP

Combine multiple audio clips, songs, and recordings into one seamless master track

Select or drop multiple MP3, WAV, AAC, or FLAC clips. Arrange their playback order and blend seamlessly with crossfade.

100% In-Browser PrivacySmooth Crossfade BlendingStudio 16-Bit WAV Export