ComfyUI Extension: ComfyUI-Nikosis-Nodes

Authored by Nikosis

Created

Updated

2 stars

Run ComfyUI workflows without the setup

No installs, no CUDA version roulette, no GPU sitting idle on your bill. Bring a workflow and run it in the browser.

Nodes: Aspect Ratio, Prompt Multiple Styles Selector, Text Concatenate

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Custom Nodes (4)

README

ComfyUI-Nikosis-Nodes

A collection of custom nodes for ComfyUI designed to enhance your workflow with utilities for aspect ratio generation, multi-style prompt selection, and text concatenation.

Installation

Recommended

Manual

  • Navigate to ComfyUI/custom_nodes in your terminal (cmd).
  • Clone the repository under the custom_nodes directory using the following command: 
    git clone https://github.com/Nikosis/ComfyUI-Nikosis-Nodes comfyui-nikosis-nodes
cd comfyui-nikosis-nodes
  • Install dependencies in your Python environment.
    • For Windows Portable, run the following command inside ComfyUI\custom_nodes\comfyui-nikosis-nodes: 
      ..\..\..\python_embeded\python.exe -m pip install -r requirements.txt
    • If using venv or conda, activate your Python environment first, then run: 
      pip install -r requirements.txt
  • Restart ComfyUI

Nodes Overview

🖌️ Aspect Ratio (nikosis)

File: nodes/aspect_ratio_nikosis.py
Category: Nikosis/Utilities

Description

Generates an empty latent tensor for SDXL (4 channels) or SD3/Flux (16 channels) with customizable aspect ratios and dimensions.

Inputs

  • model_type: Choose between SDXL (4 channels) or SD3/Flux (16 channels).
  • aspect_ratio: Select from presets (e.g., 1:1 square 1024x1024, 16:9 landscape 1344x768) or custom.
  • width/height: Custom dimensions (64–16384, step 8) when using custom.
  • swap_dimensions: Toggle to flip width and height (Off/On).
  • batch_size: Number of latents to generate (1–64).

Outputs

  • empty_latent: A LATENT tensor (batch_size x channels x height//8 x width//8).
  • width/height: Final dimensions as integers.

Features

  • Automatically rounds dimensions to multiples of 8.
  • Supports preset aspect ratios or custom sizes with dimension swapping.

Example Usage

Select SDXL, 4:3 landscape 1152x896, and batch_size=2 to generate two empty latents at 1152x896 for SDXL workflows.

🖌️ Prompt Multiple Style Selector (nikosis)

File: nodes/prompt_multiple_styles_selector_nikosis.py
Category: Nikosis/Text

Description

Combines up to four styles from a styles.json file into positive and negative prompts, with dropdown selection.

Inputs

  • style1/style2/style3/style4: Choose styles from styles.json (defaults to No Style).

Outputs

  • positive_prompt: Comma-separated positive prompts from selected styles.
  • negative_prompt: Comma-separated negative prompts from selected styles.

Configuration

  • Requires a styles.json file in config/ (e.g., comfyui-nikosis-nodes/config/styles.json).

Example styles.json

{
  "Vivid": {"prompt": "bright colors, high detail", "negative_prompt": "dull, blurry"},
  "Minimal": {"prompt": "simple, clean", "negative_prompt": "cluttered"},
  
}

{
      "||| PHOTOGRAPHY": {
        "prompt": "photography, capturing moments, storytelling, creative composition",
        "negative_prompt": "bad anatomy, comics, cropped, cross-eyed, worst quality, low quality, painting, 3D render, drawing,"
      },
}
  • Creates config/ directory if missing.

Example Usage

Select Vivid and Minimal to get:

  • Positive: bright colors, high detail, simple, clean
  • Negative: dull, blurry, cluttered

🖌️ Text Concatenate (nikosis)

File: nodes/text_concatenate_nikosis.py
Category: Nikosis/Text

Description

Concatenates multiple text inputs with a customizable delimiter and optional whitespace cleaning.

Inputs

  • text_a/text_b: Required text inputs (must be connected).
  • delimiter: String to join texts (default: ", "; supports \n for newlines).
  • clean_whitespace: Toggle to strip extra whitespace (true/false).
  • text_c/text_d: Optional additional texts.

Outputs

  • STRING: Concatenated result.

Features

  • Strips whitespace if clean_whitespace is true.
  • Ignores empty inputs.

Example Usage

Inputs:

  • text_a="hello"
  • text_b="world"
  • delimiter=" , "
  • clean_whitespace="true"

Output:
hello , world

Usage Notes

  • Dependencies: Works with ComfyUI’s standard setup—no extra installs needed.
  • Path: Place in ComfyUI/custom_nodes/comfyui-nikosis-nodes/.
  • Testing: Ensure your styles.json is correctly formatted for the style selector node.

Contributing

  • Feel free to submit pull requests or issues on GitHub.
  • Suggestions for new nodes or improvements are welcome!

License

MIT License (see LICENSE file).

Run ComfyUI workflows without the setup

No installs, no CUDA version roulette, no GPU sitting idle on your bill. Bring a workflow and run it in the browser.

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