ComfyUI Image Resizing

Precision dimension control nodes for aspect ratio adjustments and resizing workflows

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Core Features

📐 Aspect Ratio Calculations

• calculate_aspect_ratio_extension
► Computes required pixel extension to match target proportions
  ► Outputs integer value for direct pipeline integration

🔢 Scaling Mathematics

• calculate_upscale_factor
► Determines optimal scaling ratio between source/target dimensions
• calculate_upscale_rounds
► Calculates iteration count for multi-stage upscaling (requires IF node)

🖌️ Canvas Manipulation

• extend_canvas_by_percentage
► Expand canvas using % or absolute pixels (use_pixels toggle)
• image_crop_by_percentage
► Precision cropping with %/pixel unit switching
• mask_crop_by_percentage
► Synchronized mask cropping with identical controls

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Key Advantages

• Pixel-Perfect Precision
  ▸ Mathematical dimension calculations
  ▸ Rounding control for production pipelines

• Dual Measurement Modes
  ▸ Seamless percentage ↔ pixel conversion
  ▸ Unit toggling without breaking workflows

• Non-Destructive Workflow
  ▸ All operations preserve source data
  ▸ Chainable outputs for complex transforms

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Typical Use Cases

Content preparation: ○ Adapt assets for specific aspect ratios ○ Create social media templates ○ Match AI model input requirements

Production workflows: ○ Batch canvas extensions ○ Multi-stage upscale preparations ○ Mask-accurate image editing