How to Remove Blemishes with Paint.NET Clone Stamp

The Clone Stamp tool in Paint.NET allows you to seamlessly remove blemishes, spots, and unwanted imperfections from photos by sampling pixels from a clean area and painting them over the damaged region. This guide walks you through setting up your workspace, configuring the brush settings, setting an accurate source point, and applying the tool to achieve natural-looking photo retouches.

Step 1: Open Your Image and Duplicate the Layer

  1. Launch Paint.NET and open the photo you want to edit.
  2. Open the Layers window (press F7 if it is not visible).
  3. Click the Duplicate Layer button at the bottom of the Layers window. Working on a duplicated layer ensures your original image remains untouched in case you need to revert changes.

Step 2: Select the Clone Stamp Tool

  1. In the Tools palette (press F5 if hidden), click the Clone Stamp tool icon (looks like a rubber stamp), or press the L key on your keyboard.
  2. Zoom in close to the blemish by holding Ctrl and scrolling up with your mouse wheel, or by using the Zoom tool (Z).

Step 3: Adjust the Tool Settings

Before sampling, configure your brush at the top toolbar for the best blending results:

  • Brush width: Adjust the size so it is slightly larger than the blemish you want to remove.
  • Hardness: Lower the hardness (around 50% to 75%) to soften the edges of the stroke. A soft edge blends the cloned area seamlessly into the surrounding skin or background without leaving harsh borders.

Step 4: Set the Anchor (Source) Point

  1. Locate a clean, blemish-free patch of skin or texture that closely matches the lighting, color, and grain of the area surrounding the blemish.
  2. Hold down the Ctrl key. Your cursor will change into an anchor icon.
  3. Left-click once on the clean area to set the sample source.
  4. Release the Ctrl key.

Step 5: Paint Over the Blemish

  1. Move your cursor directly over the blemish. You will see a preview of the sampled area inside the brush circle.
  2. Click once or use short, gentle clicks to paint over the imperfection. Avoid dragging the brush in long strokes, as this can create repetitive patterns or blur textures.
  3. As you paint, the anchor point moves in tandem with your cursor, copying pixels relative to the original source point.

Step 6: Resample Frequently for Natural Results

Lighting and skin tone shift across different areas of a photo. To keep the edit looking realistic:

  • Set a new anchor point frequently (Ctrl + Click) from areas adjacent to each new blemish.
  • Vary your sample locations to prevent repeating identifiable patterns, pores, or shadows.
  • If a stroke looks unnatural, press Ctrl + Z to undo it, adjust your brush size or sample point, and try again.