ComfyUI-RangeToString

A custom node for ComfyUI that generates a string of numbers between a start and end value.
Supports positive and negative steps, configurable separators, and inclusive/exclusive end values.

<img width="487" height="334" alt="image" src="https://github.com/user-attachments/assets/6db49630-deb1-4e8b-a821-9e1ab936fe64" />

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Features

• Generate ranges as a string (comma-separated by default, but custom separator allowed)
• Inclusive or exclusive end value
• Supports ascending and descending ranges (positive or negative step)
• Lightweight, no additional dependencies

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1. Installation

1. Clone or download this repository into your ComfyUI/custom_nodes/ directory:

   git clone https://github.com/dehypnotic/comfyui-range-to-string.git
   

2. Restart ComfyUI.

2. Installation via ComfyUI Manager

⚠ Note: Installing via Manager requires that your security_level in config.ini is set to weak (default is high), due to external URL restrictions.

1. Set security_level = weak in ComfyUI\user\default\ComfyUI-Manager\config.ini
2. Open ComfyUI Manager → Install from URL
3. Paste the repository URL:
   https://github.com/Dehypnotic/comfyui-range-to-string.git
4. Press Install and restart ComfyUI if necessary.

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Usage Examples

| Start | End | Step | Separator | Mode | Output | |-------|-----|------|-----------|------------|--------------| | 0 | 5 | 1 | , | inclusive | 0,1,2,3,4,5 | | 0 | 5 | 1 | , | exclusive | 0,1,2,3,4 | | 5 | 0 | -1 | , | inclusive | 5,4,3,2,1,0 | | 5 | 0 | -1 | ; | exclusive | 5;4;3;2;1 |

<img width="933" height="375" alt="image" src="https://github.com/user-attachments/assets/97a127f8-28e4-4254-a564-42fc92422170" />

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License

MIT License – feel free to use, modify, and share.