Slow Down Video Lectures (No Chipmunk Effect)

Speed up or slow down web lectures, webinars, and podcasts while preserving 100% natural vocal timbre.

Add to Chrome — Free

🎤 Voice Preserve Engine

Uses native Web Audio DSP to alter playback speed from 0.5x up to 2.0x without distortion or deep pitch shifts.

🎓 Ideal for Students

Review fast-paced professors, technical language courses, and complex coding tutorials at your own pace.

🔒 100% Private

All processing runs locally in browser memory. Zero analytics, zero data tracking, and zero cloud uploads.