MusicTools for YouTube by NDS

Real-time pitch shifting and speed control for YouTube videos in Firefox. Transpose by semitones, fine-tune pitch in cents, and control playback speed — all independently.

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About this extension

The only high-quality pitch and speed tool for Firefox on YouTube. Uses Rubberband WASM for professional-grade pitch shifting
Features:
- Transpose: ±12 semitones
- Pitch fine-tune: ±100 cents
- Speed control: 0.25× to 4×
- Speed and pitch fully independent
- Overlay controls in the YouTube player bar
- Sidebar panel with sliders, test tone, and harmonic analyzer

Beta version — actively in development.

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MusicTools for YouTube by NDS

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