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Scratch Crab Looper

Practice your cuts anywhere

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Scratch Crab Manual

Virtual Turntable Guide

Basic Controls

Welcome to the ultimate DJ looper. This app is designed for turntablists to practice scratching over beats.

  • Upload: Click "Upload Beat" to add your own tracks. They are saved in your browser automatically!
  • Pitch / Speed: Use the slider on the right to change the tempo of the playing beat. The platter animation will sync to the speed.
  • Keyboard Shortcuts: Use the Left/Right Arrow keys to switch tracks, and Spacebar to Play/Pause.

Player Controls

  • Shuffle (🔀): When enabled, the next track will be chosen randomly from the current list.
  • Share (📤): Click the share icon in the player bar to share the app link via your device's native sharing or copy it to the clipboard.

Q.PAD (Quick Pads)

The 8 pads under the turntable allow you to trigger loops instantly, like hot cues.

  • Click +Q.PAD on the turntable to assign the currently playing track to an empty pad.
  • Use keyboard keys 1 through 8 to trigger these pads instantly.

Favorites & Auto-Loop

  • Click the Heart icon next to the track info to save a beat to your "Liked Songs" library.
  • If you play a track you uploaded yourself, the AUTO LOOP panel will appear on the right. Use it to automatically loop 1, 2, or 4 bars based on the track's BPM.
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BPM