Extensions/CornmeisterNL PowerPack
ComfyUI Extension

CornmeisterNL PowerPack

A power-user focused collection of ComfyUI nodes: LoRA management, prompt building, resolution presets, metadata-safe image saving (CivitAI-ready), and UNet model…

By Cornmeister·Created 7 months ago·Updated 7 months ago· 0
Cornmeister/ComfyUI-CornmeisterNL-PowerPack
Nodes7
On cloudLocal install
Category⚡ CornmeisterNL/PowerPack/Loaders, ⚡ CornmeisterNL/PowerPack/LoRA
Stars0
Updated7 months ago

Nodes (7)

Power Diffusion Model Loader
⚡ CornmeisterNL/PowerPack/Loaders
Power LoRA Configurator
⚡ CornmeisterNL/PowerPack/LoRA
Power LoRA Selector
⚡ CornmeisterNL/PowerPack/LoRA
Power Prompt Builder
⚡ CornmeisterNL/PowerPack/Text
Power Res
⚡ CornmeisterNL/PowerPack/Latent
Power Save Image
⚡ CornmeisterNL/PowerPack/Save
Power Text Concat
⚡ CornmeisterNL/PowerPack/Text
Readme

⚡ CornmeisterNL PowerPack for ComfyUI

A curated collection of power‑user focused ComfyUI custom nodes, designed to streamline prompt building, LoRA workflows, resolution management, metadata‑clean image saving, and model loading — with a strong focus on CivitAI‑ready outputs and production‑grade usability.

This project has grown organically from real daily use and is opinionated by design.

✨ Features Overview

⚡ Power Prompt Builder

Generate advanced image prompts using the OpenAI Responses API.

  • Base prompt + instruction driven
  • Supports GPT‑5.x family models
  • Clean output mode (prompt only, no chatter)
  • Ideal for Z‑Image / cinematic prompt styles

⚡ Power Text Concat

Concatenate multiple text inputs into a single prompt string.

  • Optional trigger input
  • Unlimited chained inputs
  • Auto‑skips disabled or empty inputs
  • Custom separator support

⚡ Power LoRA Configurator

Configure a single LoRA with:

  • LoRA file selection
  • Trigger word
  • Model & CLIP strength

Outputs a reusable LoRA config object.

⚡ Power LoRA Selector

Select exactly one active LoRA from multiple configurators.

  • Model + CLIP passthrough
  • Trigger output for prompt injection
  • Designed for fast character testing

⚡ Power Res

Resolution & latent generator with JSON‑based presets.

  • Presets loaded from presets/*.json
  • Manual override option
  • Outputs:
    • LATENT
    • WIDTH
    • HEIGHT

⚡ Power Diffusion Model Loader

UNet‑based diffusion model loader.

  • Reads from models/unet
  • Outputs:
    • MODEL
    • model_name (string, usable for metadata)

⚡ Power Save Image

Production‑grade image saving node with dual‑output strategy.

Share Output (CivitAI‑ready)

  • Clean PNG/JPEG
  • Metadata stored as:
    • parameters (PNG tEXt chunk)
    • EXIF UserComment (JPEG)
  • Fully compatible with CivitAI

Full Flow Archive (optional)

  • PNG with embedded full ComfyUI workflow
  • Separate .txt containing full workflow JSON
  • Ideal for archival & reproducibility

Features

  • Two output paths:
    • Share path
    • Full‑flow path
  • Per‑save toggles
  • Time macros supported: 
    [time(%Y-%m-%d)]

📂 Installation

Clone or download into your ComfyUI custom_nodes directory:

cd ComfyUI/custom_nodes
git clone https://github.com/Cornmeister/ComfyUI-CornmeisterNL-PowerPack.git

Restart ComfyUI.

You should see in the console:

⚡ [CornmeisterNL Powerpack] Backend loaded (v1.0.0)

🧠 Philosophy

  • No unnecessary abstraction
  • No forced pipes
  • Everything optional unless truly required
  • Nodes should never break execution when inputs are missing or disabled
  • Metadata should be share‑safe by default, but full reproducibility must remain possible

🚀 Versioning

This repository follows semantic versioning:

  • v1.0.0 → First stable public release
  • Patch versions → bugfixes
  • Minor versions → new nodes or features
  • Major versions → breaking changes

🧩 Requirements

  • ComfyUI (recent)
  • Python 3.10+
  • Pillow
  • Requests (for Power Prompt Builder)
  • OpenAI API key (only if using prompt builder)

Set your API key as an environment variable:

OPENAI_API_KEY=sk-...

📜 License

MIT — do whatever you want, attribution appreciated.

👤 Author

CornmeisterNL
Built by a power user, for power users.

⚡ Enjoy.