PG Nodes

A small suite of pragmatic ComfyUI nodes focused on fast setup, clean UIs, and practical workflow utilities. The repo currently includes:

• Lazy Prompt - a lightweight prompt history, inline randomizer {red|green|blue}, optional lens/time/lighting/temperature augmentations.
• Unified Loader - one loader to rule them all (Checkpoint, Diffusion UNet, VAE/TAESD, CLIP, CLIP‑Vision, ControlNet, IP‑Adapter, Upscale), with CPU offload. Includes a compact mini variant.
• Just Save Image - minimal output/passthrough nodes that save images conditionally, without UI previews.

Demo video of prompt history: <a href="https://youtu.be/6tFyui_DCDs?si=nSgm8S6JPIJ4ZqNn" target="_blank"> <img src="./examples/PG_nodes.png" alt="Demo video" /> </a>

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Table of Contents

• Lazy Prompt
• Unified Loader
• Just Save Image
• Installation
• Configuration

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Lazy Prompt

Save → Recall → Iterate The core idea of Lazy Prompt is comfort: write a prompt once, and bring it back instantly next time. The node keeps a compact on‑disk prompt history (positive & negative) and lets you quickly save, search, and re‑use past prompts like a mini prompt library. Optional add-ons (lens, time of day, lighting, color temperature).

Node

• Saves every run to history and lets you load any previous entry with a couple of clicks.
• Inline randomizer {red|green|blue} for quick variations.
• Optional helpers: camera/lens phrases, time‑of‑day, lighting direction, white balance temperature.

Details

• Default history file: custom_nodes\prompt_history.json.
• Default cap: max_entries = 500.
• Tip: right‑click the node (⋯) to open the context menu and tweak the history file path or the maximum number of stored entries.

Lazy Prompt (ext)

• Starting with version 1.5.0, I added “Lazy Prompt (ext)”, which includes outputs for interoperability with other nodes:

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Unified Loader

One loader, more VRAM for sampling Unified Loader of Checkpoint, Diffusion UNet, VAE/TAESD, CLIP/CLIP-Vision, ControlNet, IP-Adapter, and Upscale models-with a simple CPU switch. Offloading parts of the stack to CPU often frees up valuable VRAM for the sampler (KSampler/DiT).

Can load

• Checkpoint → CP_MODEL, CP_CLIP, CP_VAE
• Diffusion UNet (incl. FP8 variants where available)
• VAE and TAESD shortcuts: taesd, taesdxl, taesd3, taef1
• CLIP (multi‑file), CLIP‑Vision
• ControlNet, IP‑Adapter, Upscale models

Tip: The CPU switch is best‑effort. Depending on your setup and model family, not everything can be moved off-GPU, but when it works, the sampler gets more VRAM.

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Just Save Image

Nodes Minimal nodes that save images in an IMAGE batch to ComfyUI’s output directory when a boolean toggle is ON. Saves without preview.

• Just Save Image - output node (no outputs).
• Just Save Image & Out - passthrough version that returns the input IMAGE.

Details

• Filenames: <prefix>_<counter>_.png where <counter> auto-increments from the highest existing number in the output folder. Default prefix: ComfyUI.
• Metadata: stores prompt, workflow, parameters, and filename_prefix as PNG text chunks when provided via the hidden prompt/extra_pnginfo inputs.

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Installation

Via ComfyUI Manager

1. Open ComfyUI Manager.
2. Search for “PG Nodes”.
3. Install and restart ComfyUI.

Manual

1. Go to the repo Code → Download ZIP.
2. Extract the ZIP.
3. Rename the extracted folder to PG-nodes.
4. Move that folder to your ComfyUI custom nodes directory:
   • Windows (typical): C:\Users\<you>\Documents\ComfyUI\custom_nodes\PG-nodes
   • Or wherever your ComfyUI root lives → custom_nodes/PG-nodes
5. Restart ComfyUI.
6. In the node search, look for the PG category (e.g., Lazy Prompt, Unified Loader).

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Configuration

Lazy Prompt maps

• Default config file: PG_Lazy_Prompt_Config.json.

• Typical location: inside this repo folder (when installed via Manager/Manual).

• You can change the config file path anytime from the node’s context menu.

• Maps include examples like:

  • POS_LIGHT_MAP, NEG_LIGHT_MAP - direction‑dependent phrases.
  • LENS_CHOICES - lens list (includes none).
  • TIME_MAP - time‑of‑day phrases.

History storage

• Defaults at runtime: history_path = custom_nodes\prompt_history.json, max_entries = 500.
• You can adjust history path and max entries from the node’s context menu.

Versioning & Updates

[1.0.0]

Added

• Initial public release.
• Nodes: Lazy Prompt (+mini), Unified Loader (+mini), Just Save Image (+Out).
• Prompt history JSON + config file PG_Lazy_Prompt_Config.json.

[1.5.0]

Added

• Lazy Prompt (ext).