ComfyUI Prompt Formatter

This is a custom node for ComfyUI that provides tools to clean, optimize, and format text prompts. It includes features like converting tags, aligning brackets, and applying weights to prompts.

About

This project is a direct equivalent of sd_extension-prompt_formatter but specifically designed for ComfyUI. This project is a fork of uwidev's sd_extension-prompt_formatter.

Features

Prompt Formatter Node(s)

• CLIP Text Encode (Prompt Formatter): Equivalent to ComfyUI's CLIP Text Encode.
• Prompt Formatter (Only Text): Similar to above, but returns STRING instead of CONDITIONING.

These nodes feature the following buttons:

💫 Format Prompt

A "magic button" that optimizes the text in the input field:

• Removes mismatched brackets ((), []).
• Aligns commas, brackets, and spacing for better consistency.
• Applies weights to bracketed text (e.g., ((word)) might become (word:1.21) if BRACKET2WEIGHT is enabled in settings.json).
• Removes duplicate tags within the prompt.

✒️ Convert Tags

Converts Danbooru-style tags (e.g., tag_name with underscores) into a standard comma-separated format (e.g., tag name,), considering the CONV_SPACE_UNDERSCORE setting in settings.json and filtering based on blacklisted_tags.txt.

⏪ Undo Last Change

Reverts the last action (either Format Prompt or Convert Tags) performed using the buttons on that specific node instance.

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Append String Node

This node appends a second string (string2) to a first string (string1), with following options:

• comma: Add a comma and space between the combined strings.
• dedupe: Prevent adding tags from string2 if they already exist in string1.

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Configurations (settings.json)

The formatter's behavior can be customized via the settings.json file. Available options are described below:

Option	Description	Values	Default
BRACKET2WEIGHT	Converts multiple brackets into weights.	true, false	true
COLLAPSE_LINEBREAKS	Collapses consecutive line breaks to remove empty lines.	true, false	true
CONV_SPACE_UNDERSCORE	Controls conversion between spaces and underscores in tags.	"None", "Spaces to underscores", "Underscores to spaces"	"None"
BLACKLIST_FILE	Path to the blacklist file for tag filtering.	String (file path)	"blacklisted_tags.txt"

Default Blacklist

tagme .*text .*bubble onomatopoeia dialogue
.*(artwork) watermark signature 20\d\d

The blacklist file (blacklisted_tags.txt) contains regular expression patterns used to filter out unwanted tags during tag conversion (✒️). Each line may include multiple patterns separated by spaces. Tags matching any of these patterns will be excluded.

Installation

1. Clone this repository into your custom_nodes directory of ComfyUI:

   git clone https://github.com/younyokel/comfyui_prompt_formatter.git

2. Restart ComfyUI server.