How to Use This Tool

The Image Overlay Tool lets you layer two images on top of each other with adjustable transparency and positioning - perfect for comparing X-rays, posture photos, or tracking treatment progress.

• Step 1: Upload your bottom layer image (e.g., posture photo)
• Step 2: Upload your top layer image (e.g., X-ray or DICOM file)
• DICOM Support: Upload .dcm or .dicom files directly - they will be automatically converted for viewing
• Opacity Control: Adjust the top layer transparency from 0% (invisible) to 100% (fully opaque)
• Zoom Controls: Independently zoom each layer from 10% to 300%
• Position Controls: Use directional buttons to move each image, or click "Center" to reset position
• Fine Adjustment: Click and drag images directly in the overlay view for precise positioning
• Export: Download as PNG or save as PDF for patient records
• Use Cases: DICOM X-ray overlay on posture photos, before/after comparisons, skeletal alignment analysis
• Privacy: All images are processed locally in your browser - nothing is uploaded to any server
• Supported Formats: JPG, PNG, GIF, DICOM (.dcm, .dicom)