How to speed up audio:

1. Select an audio file (MP3, WAV, OGG, M4A, FLAC, etc.)
2. Adjust the "Speed multiplier" slider in the settings panel (right) – values above 1.0 make it faster
3. Click "Preview Speed" to hear the effect (no file saved)
4. Choose output format (MP3 recommended) and bitrate
5. Click "Speed Up & Export" – the faster audio will be created locally
6. Download the result and enjoy quicker playback (pitch increases naturally)

All processing happens in your browser – files never leave your device. 2x speed = half the duration, higher pitch.