🖼️ Image Part Remover – User Guide

This app allows you to remove specific parts of an image by selecting colors (chroma keying), and fine-tune the result with spill and edge feather settings. It’s perfect for making transparent backgrounds or cleaning up similar-colored zones.

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📂 Step 1: Upload an Image

1. Click the “Upload Image” button.
2. Select a JPG, PNG, or any standard image from your device.
3. You’ll see two previews:
   • Original Image
   • Chroma Key Preview (Live result of your edits)

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🎯 Step 2: Select Colors to Remove

1. Click anywhere on the Original Image to pick a color.
2. That color will be added to your Key Colors list.
3. It will be removed from the Chroma Key Preview.

🧠 Tip: You can select multiple colors to remove all at once.

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🎛️ Step 3: Fine-Tune the Removal

• Tolerance (0–255):
  Controls how “close” a color must be to the selected color to be removed.
  👉 Higher = more aggressive removal.
• Spill Removal (0–100):
  Helps reduce leftover color “spill” around edges by subtly blending pixels.
• Edge Feather (0–10):
  Softens the edges of transparent areas with a blur effect.

🧪 Use the sliders to experiment until the preview looks clean.

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🗑️ Step 4: Manage Key Colors

• View all picked colors under Key Colors.
• To remove a color, click the × next to it.

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💾 Step 5: Export & Import Settings (Optional)

Export:

• Click “Export Settings” to save your color selections and slider values in a .json file.
• Useful if you want to reuse the same settings on similar images later.

Import:

• Click “Import Settings” and select a previously saved .json file.
• It will instantly apply the saved settings to your current image.

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🔄 Reset Everything

• Click “Reset All” to clear colors, sliders, and image.
• This brings the app back to its starting state.

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⬇️ Download the Result

Once you’re satisfied with the Chroma Key Preview:

• Click “Download as PNG” to save your image with the removed background or color zones.
• The download includes transparency where colors were removed.

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🎨 Interface Features

• Dark Mode UI for eye comfort.
• Live Preview canvas with checkered transparency background.
• Built-in scrollbars and clean, responsive layout.

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✅ Best Practices

• Pick background colors or any solid areas you want removed.
• For photos with gradients or lighting, increase tolerance gradually.
• Use edge feather sparingly for clean borders, especially for portraits or products.