PitchKey

PitchKey is a real-time audio studio for YouTube. Move any video up or down by up to 12 semitones without changing tempo, adjust playback speed from 0.25× to 4×, add studio-quality reverb, loop any section, shape the Chop & Screw sound, and fine-tune with a 10-band graphic equalizer, all in a clean popup and Studio side panel on any YouTube tab. WHO IT'S FOR • Singers transposing songs to a comfortable vocal range • Guitarists and pianists matching a key during practice • Music students working on ear training and key recognition • Producers reverse-engineering arrangements • Anyone who wants to slow a track down without the chipmunk effect FREE FEATURES • Pitch shift ±12 semitones (tempo-preserved, WSOLA algorithm) • Independent speed control: 0.25× to 4× • Convolution reverb with dry/wet mix • A↔B loop tool for practicing tricky sections • Chop & Screw studio: Screw presets + chopped stutter effects • Studio side panel, persistent settings, one-click reset PITCHKEY PRO (optional upgrade) • 10-band graphic equalizer (31 Hz – 16 kHz) with a live spectrum analyzer, output gain, and genre presets (Bass, Vocal, Warm, Bright, Rock, EDM, Podcast). Sculpt the exact tone you want. Core features stay free forever. WHAT'S NEW IN v1.3 • New: PitchKey Pro — a 10-band graphic EQ with a live spectrum analyzer, output gain, and 8 presets. Upgrade right from the extension. PRIVACY PitchKey processes all audio locally in your browser and does not collect personal data. Optional Pro purchases are handled securely by ExtensionPay and Stripe — payment details never pass through the extension. OPEN SOURCE PitchKey uses the open-source SoundTouchJS audio worklet (LGPL-2.1) for pitch shifting. Full license attribution is included in the package. DISCLAIMER PitchKey is an independent project, not affiliated with or endorsed by YouTube, Google LLC, or Alphabet Inc. "YouTube" is a trademark of Google LLC, used only to describe the platform PitchKey operates on. Currently supports YouTube only. SoundCloud and Spotify Web are planned.