About the Tempo Changer
Slow a song down to learn it, or speed up a lecture. “Keep original pitch” uses time-stretching; turn it off for a turntable effect.
How to use it
- Drop an audio file (MP3, WAV, M4A, OGG, FLAC) or a video into the box.
- Pick a preset or adjust the controls — speed and pitch mode. Hit play to hear it live and use “Compare” to hear the original.
- Download as MP3 or WAV. Nothing is uploaded: the processing runs on your device.
Questions
Which is better for practice?
Keep original pitch on, so you hear the song in the right key at a slower tempo.
Is WaveCraft free?
Yes. Every tool is free with no sign-up, no watermark and no file limits.
Are my files uploaded?
No. All processing happens in your browser on your own device, so your audio never leaves your computer or phone.
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