Sketch Clean

Turn your paper sketches into clean, transparent line art.

Photograph your pencil or ink drawing, and Sketch Clean isolates the lines on a transparent background — ready for colouring, lettering, or finishing in Procreate, Clip Studio, Photoshop, or any art app.

How it works

  1. Snap or pick — Photograph your sketch or choose one from your photo library.
  2. Automatic cleanup — Sketch Clean detects the page, corrects perspective, removes paper tint and shadows, and extracts your lines.
  3. Export — Share as a transparent PNG for layering, or “On White” for easy viewing and sharing.

Features

  • Transparent background — Lines on alpha, ready to layer.
  • On White export — Share a white-background version that looks great in Photos, Messages, and social media.
  • Page detection — Automatically finds and straightens your sketch.
  • Shadow & tint removal — Eliminates yellowed paper, uneven lighting, and pencil smudge fill.
  • Sensitivity control — Dial in the threshold to keep faint construction lines or only bold strokes.
  • Preserve tones toggle — Keep subtle pencil graduation or output pure black lines.
  • Before/after slider — Drag to compare original and cleaned result.
  • Completely offline — All processing happens on your device. Nothing is uploaded.

Privacy first

Your sketches never leave your device. Sketch Clean has no accounts, no analytics, no crash reporting, and no network connection. Uninstall the app and everything is gone.

Read our full privacy policy

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