ComfyUI-SmartGridCutter

ComfyUI-SmartGridCutter ✂️

Universal grid image splitter for ComfyUI.

Automatically detects grid layout by analyzing brightness/contrast and splits any grid image into individual frames.

Features

• 🔍 Smart Detection — Automatically finds grid dividers by brightness analysis
• 📐 Preset Modes — 3×3, 4×2, 3×2, 2×2, or custom
• 🎯 Auto Fallback — If smart detection fails, falls back to aspect ratio heuristics
• 🔗 URL Support — Download and cut images directly from URL (for API/n8n integration)
• 📏 Pixel Alignment — Aligns output dimensions to 16px for video compatibility
• ✂️ Edge Padding — Configurable trim to remove divider artifacts

Nodes

Smart Grid Cutter ✂️

Takes an IMAGE input and splits it into up to 9 individual frames.

| Input | Type | Description | |-------|------|-------------| | image | IMAGE | Grid image to split | | mode | ENUM | auto / 3x3 / 4x2 / 3x2 / 2x2 / custom | | custom_cols | INT | Columns (for custom mode) | | custom_rows | INT | Rows (for custom mode) | | divider_threshold | FLOAT | Detection sensitivity (0.01-0.5) | | min_divider_width | INT | Minimum divider width in px | | padding | INT | Pixels to trim from edges | | align_to | INT | Dimension alignment (16 for video) |

Smart Grid Cutter (URL) ✂️🔗

Downloads image from URL and splits it. Same parameters as above, but takes image_url string instead of IMAGE tensor.

Output

• frame_0 through frame_8 — Individual frames as IMAGE tensors
• cols, rows — Detected/preset grid dimensions
• total_frames — Actual number of frames
• grid_info — Human-readable detection summary

Installation

ComfyUI Manager

Search for "SmartGridCutter" in ComfyUI Manager.

Manual

cd ComfyUI/custom_nodes/
git clone https://github.com/imind-studio/ComfyUI-SmartGridCutter.git
# Restart ComfyUI

Use Cases

• Storyboard cutting — Split 3×3 AI-generated storyboards into individual scenes
• Character sheets — Split 4×2 character reference sheets into individual poses
• Contact sheets — Split any contact/proof sheet into individual images
• Comic panels — Split comic pages into individual panels

License

MIT

Author

iMind Studio — imind.pw