# Speed & pitch

> Change tempo without affecting pitch, or shift pitch in semitones with formant preservation — locally, no upload.

Change tempo without affecting pitch, or shift pitch in semitones with formant preservation — locally, no upload.

There is no upload endpoint — your files are processed in this browser tab. Open your network tab and check.

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Canonical HTML: https://www.safepaper.app/audio/tempo-pitch
Markdown: https://www.safepaper.app/audio/tempo-pitch.md

There is no upload endpoint — your files are processed in this browser tab. Open your network tab and check.