ArtVenture Custom Nodes

A comprehensive set of custom nodes for ComfyUI, focusing on utilities for image processing, JSON manipulation, model operations and working with object via URLs

Image Nodes

LoadImageFromUrl

Loads images from URLs.

Inputs:

• image: List of URLs or base64 image data, separated by new lines
• keep_alpha_channel: Preserve alpha channel
• output_mode: List or batch output. Use List if you have different resolutions.

JSON Nodes

LoadJsonFromUrl

Loads JSON data from URLs.

Inputs:

• url: JSON URL
• print_to_console: Print JSON to console

LoadJsonFromText

Loads JSON data from text.

Inputs:

• data: JSON text
• print_to_console: Print JSON to console

Get<*>FromJson

Includes GetObjectFromJson, GetTextFromJson, GetFloatFromJson, GetIntFromJson, GetBoolFromJson.

Use key format key.[index].subkey.[sub_index] to access nested objects.

Utility Nodes

StringToNumber

Converts strings to numbers.

Inputs:

• string: Input string
• rounding: Rounding method

TextRandomMultiline

Randomizes the order of lines in a multiline string.

Inputs:

• text: Input text
• amount: Number of lines to randomize
• seed: Random seed

TextSwitchCase

Switch between multiple cases based on a condition.

Inputs:

• switch_cases: Switch cases, separated by new lines
• condition: Condition to switch on
• default_value: Default value when no condition matches
• delimiter: Delimiter between case and value, default is :

The switch_cases format is case<delimiter>value, where case is the condition to match and value is the value to return when the condition matches. You can have new lines in the value to return multiple lines.

Inpainting Nodes

PrepareImageAndMaskForInpaint

Prepares images and masks for inpainting operations. It's to mimic the behavior of the inpainting in A1111.

Inputs:

• image: Input image tensor
• mask: Input mask tensor
• mask_blur: Blur amount for mask (0-64)
• inpaint_masked: Whether to inpaint only the masked regions, otherwise it will inpaint the whole image.
• mask_padding: Padding around mask (0-256)
• width: Manually set inpaint area width. Leave 0 default to the masked area plus padding. (0-2048)
• height: Manually set inpaint area height. (0-2048)

Outputs:

• inpaint_image: Processed image for inpainting
• inpaint_mask: Processed mask
• overlay_image: Preview overlay
• crop_region: Crop coordinates (input of OverlayInpaintedImage)

OverlayInpaintedImage

Overlays inpainted images with original images.

Inputs:

• inpainted: Inpainted image
• overlay_image: Original image
• crop_region: Crop region coordinates

Outputs:

• IMAGE: Final composited image

LaMaInpaint

Remove objects from images using LaMa model.

LLM Nodes

• LLM API Config: Generic model settings (model, tokens, temperature).
• NanoBanana API Config: Preset for Gemini 2.5 Flash Image (modalities/aspect ratio).
• OpenAI API: Connect to OpenAI chat/completions.
• OpenRouter API: Route to many providers via OpenRouter; supports text and images where available.
• Gemini API: Google Gemini (text and image generation).
• Claude API: Anthropic Claude messages.
• AWS Bedrock Claude API: Claude via AWS Bedrock.
• AWS Bedrock Mistral API: Mistral completions via AWS Bedrock.
• LLM Message: Build message lists (system/user/assistant) with optional images.
• LLM Chat: Run multi-turn chats; returns text and optional images.
• LLM Completion: Single-prompt completion.

Known Issues

AV_controlnetPreprocessor is missing

AV_controlnetPreprocessor is a wrapper for comfyui_controlnet_aux that I created to quickly switch between multiple preprocessors, instead of having a separate node for each one. It requires comfyui_controlnet_aux to be installed, otherwise it will not be available.

Since AIO_Preprocessor is already implemented in comfyui_controlnet_aux, this node will be deprecated. You are recommended to switch to using AIO_Preprocessor node directly.