🧩 ComfyUI - Random Tag Weights Node

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A custom ComfyUI node that randomizes tag weights for text prompts.
Useful for dynamic prompt generation or creative experimentation in AI image workflows.

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✨ Features

• Randomly generates weights for each tag (e.g., (dog:1.2))
• Detects and optionally preserves existing weighted tags (tag:1.0)
• Supports grouped tags inside parentheses, treating (small dog) as a single tag
• Allows splitting tags by commas or spaces
• Filters tags based on a minimum weight threshold
• Optionally shuffles the order of output tags
• Supports maximum output tag limits
• Allows reproducible randomness via a seed
• Lets you choose comma-separated or space-separated output formatting
• Supports both inline text input and external input_text connections

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⚙️ Parameters

Name	Type	Description
text	string	Base tag list or general text input
min_weight	float	Minimum random weight
max_weight	float	Maximum random weight
threshold	float	Minimum weight to include a tag
max_tags	int	Maximum number of output tags
seed	int	Random seed for reproducibility
shuffle_tags	bool	Shuffle tags before output
detect_by_commas	bool	ON = split by commas, OFF = split by spaces
group_parentheses	bool	Treat ( ... ) groups as one tag
preserve_existing_weights	bool	If a tag already has (tag:1.0) weight, leave it unchanged
output_with_commas	bool	Output tags joined by commas (ON) or spaces (OFF)
input_text	optional string	External input that overrides the text field

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🧠 How It Works

1. The node reads the source text (text or input_text).
2. Any tags already in (tag:weight) format are extracted and preserved or re-weighted depending on settings.
3. Parentheses groups like (small bird) are treated as single tags and processed.
4. The remaining text is split into tags based on commas or spaces.
5. Each tag is assigned a random weight between min_weight and max_weight.
6. Tags with weights below threshold are discarded.
7. Tags are shuffled (if enabled) and trimmed to max_tags.
8. The final output is formatted as (tag:weight) using either commas or spaces, for example: (dog:1.2), (cat:1.0), (small bird:1.1)

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📦 Installation

1. Download or clone this repo into your ComfyUI/custom_nodes folder

2. Restart ComfyUI — your new node will appear under the Text category!

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🖼️ Workflow

🖼️ Screenshot