comfyui-prompt-library

ComfyUI Prompt Library

A template-based prompt library and weighted prompt editor for ComfyUI. Designed and tested with Comfy Desktop.

Features

• Enable/disable prompt lines.
• Weight controls in 0.1 increments, with weighted output such as (red hair:1.2).
• Dynamic STRING inputs for chaining multiple Prompt Library nodes.
• Create, rename, duplicate, overwrite, and delete templates.
• Create, rename, and delete folders.
• Hierarchical library view, search, favorites, and recent templates.
• Collapsible prompt groups.
• Drag-and-drop line and group reordering and group reassignment.
• Import existing prompt text with selectable delimiters.
• Simple (text:1.2) weight normalization.
• Leading // imports as disabled lines.
• Unsupported/advanced syntax is kept as raw text instead of being force-converted.
• JSON + matching TXT export whenever a template is successfully saved.
• TXT contains the exact Prompt Library output generated at save time.
• Unsaved-state indicator and internal editing history.

Installation

Copy the comfyui-prompt-library folder into:

ComfyUI/custom_nodes/

Then completely restart Comfy Desktop.

Templates are stored in:

ComfyUI/custom_nodes/comfyui-prompt-library/templates/

Templates and backup

Each template uses a JSON file plus a matching TXT file:

templates/
└── characters/
    ├── girl.json
    └── girl.txt

The JSON is the editable source of truth. The TXT is a one-way, human-readable export of the exact generated prompt at save time.

Editing a TXT file outside ComfyUI does not update the JSON automatically. To restore from TXT, use Import, then save the resulting template.

Import

Choose a delimiter:

• Newline — one physical line becomes one Prompt Library line; commas remain part of the text.
• Comma — commas split entries; newlines remain part of an entry.
• Comma + Newline — either delimiter splits entries.
• Space — whitespace splits entries.
• None — the entire input becomes one line.

Leading // marks an imported line as disabled.

Simple explicit weights such as (red hair:1.2) are normalized into the line text and weight fields. Advanced/nested prompt syntax such as ((red hair)) is intentionally not parsed. When an explicit weight expression cannot be interpreted safely, the original input is preserved as-is.

Credits

Author: Anonymous contributor
AI development partner: OpenAI ChatGPT

This project was developed collaboratively with ChatGPT. The anonymous contributor is the publisher/maintainer; ChatGPT is credited as the AI development partner.

Release

Version 1.0.0, based on the tested v43 implementation.

License

MIT License. See LICENSE.txt.