Split Image List (3-Way) - Split image batches into three separate lists with customizable ratios
Merge Image Lists (3-Way) - Combine three image lists with configurable merge order
Select Last Image - Extract the last image from a batch
Skip First Image - Remove the first image from a batch

🎨 Image Adjustments

Brightness/Contrast/Saturation/RGB - Comprehensive color and tone adjustments with per-channel RGB gain control
Diagonal Text Watermark - Add customizable diagonal text watermarks to images

🔲 Tiling & Upscaling

Image Tile Split - Divide images into overlapping tiles for processing large images
Image Tile Merge - Reconstruct images from tiles with smart blending
Overlapping Image List Splitter - Automatically split image batches with overlap
Overlapping Image List Merger - Merge overlapping images with seamless blending

🛠️ Utilities

Image Dimensions (Multiple of 16) - Set dimensions constrained to multiples of 16
Resolution Wan - Quick resolution presets for common aspect ratios
RGB Channel Merger - Combine separate R, G, B channels into a single image
Black Image Generator - Create blank black images with specified dimensions
Load Image (with filename) - Load images and output the filename
Extract Filename - Extract filename without extension from file paths
Tile Info Display - Debug utility to display tiling information

Installation

Method 1: Clone the Repository

Navigate to your ComfyUI custom nodes folder and clone this repository:

git clone https://github.com/Praveenhalder/praveen-tools.git

Method 2: Manual Installation

Download the Praveen_tools.py file
Place it in your ComfyUI/custom_nodes/ directory
Restart ComfyUI

Requirements

ComfyUI
PyTorch
PIL (Pillow)
NumPy

All dependencies are typically included with a standard ComfyUI installation.

Node Documentation

Image List Operations

Split Image List (3-Way)

Splits a batch of images into three separate lists based on customizable ratios.

Inputs:

images (IMAGE) - Input image batch
split_ratio_1 (FLOAT) - Ratio for first split (default: 0.33)
split_ratio_2 (FLOAT) - Ratio for second split (default: 0.33)

Outputs:

images_1, images_2, images_3 - Three separate image batches

Merge Image Lists (3-Way)

Combines three image lists into a single batch.

Inputs:

images_1, images_2, images_3 (IMAGE) - Three input image batches
merge_order - Order to merge: "1-2-3", "1-3-2", "2-1-3", etc.

Outputs:

merged_images - Combined image batch

Image Adjustments

Brightness/Contrast/Saturation/RGB

Comprehensive image adjustment with individual channel control.

Inputs:

image (IMAGE) - Input image
brightness (FLOAT) - 0.0 to 2.0 (default: 1.0)
contrast (FLOAT) - 0.0 to 2.0 (default: 1.0)
saturation (FLOAT) - 0.0 to 2.0 (default: 1.0)
red_gain, green_gain, blue_gain (FLOAT) - 0.0 to 2.0 (default: 1.0)

Outputs:

Adjusted image

Diagonal Text Watermark

Adds customizable diagonal text watermarks across images.

Inputs:

image (IMAGE) - Input image
text (STRING) - Watermark text
font_size (INT) - Text size (default: 120)
opacity (FLOAT) - 0.0 to 1.0 (default: 0.2)
color - Text color selection
angle (FLOAT) - Rotation angle in degrees
spacing (INT) - Space between repetitions
x_offset, y_offset (INT) - Position offset

Tiling & Upscaling

Image Tile Split

Divides large images into overlapping tiles for processing.

Inputs:

image (IMAGE) - Input image
tile_size (INT) - Size of each tile
overlap_percent (FLOAT) - Overlap between tiles (0-50%)

Outputs:

tiles (IMAGE) - Batch of tiles
tile_info (TILE_INFO) - Metadata for reconstruction

Image Tile Merge

Reconstructs original image from processed tiles with smart blending.

Inputs:

tiles (IMAGE) - Processed tiles
tile_info (TILE_INFO) - Metadata from split operation
crop_percent (FLOAT) - Amount of overlap to crop (0-100%)
fade_percent (FLOAT) - Blending zone size (0-100%)
blend_mode - "linear", "cosine", or "sigmoid"

Outputs:

Reconstructed image

Utilities

Image Dimensions (Multiple of 16)

Outputs width and height constrained to multiples of 16, useful for stable diffusion models.

Inputs:

width (INT) - Width in pixels (step: 16)
height (INT) - Height in pixels (step: 16)

Outputs:

width, height (INT)

Resolution Wan

Quick access to common aspect ratios and resolutions.

Inputs:

aspect_ratio - Predefined ratios (1:1, 16:9, 9:16, etc.)
megapixels (FLOAT) - Target megapixels (default: 1.0)

Outputs:

width, height (INT)

Use Cases

High-Resolution Image Processing

Use the tile split/merge nodes to process images larger than your GPU memory allows:

Image Tile Split - Break into manageable tiles
Process tiles (upscale, denoise, etc.)
Image Tile Merge - Seamlessly reconstruct

Batch Processing Workflows

Split batches for different processing paths, then merge:

Split Image List - Separate into thirds
Apply different effects to each third
Merge Image Lists - Recombine in desired order

Color Grading

Use the Brightness/Contrast/Saturation/RGB node for precise color correction with individual RGB channel control.

Watermarking

Add professional diagonal watermarks with the Diagonal Text Watermark node.

Tips & Best Practices

Tiling: Use 20-30% overlap for seamless blending
Blending: Cosine mode provides the smoothest transitions
Performance: Larger tiles = fewer tiles but more VRAM per tile
Crop: Start with 50% crop and adjust if you see seams

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

License

GPL-3.0 License

Credits

Created by Praveen

Support

If you encounter any issues or have questions:

Open an issue on GitHub
Check existing issues for solutions

Changelog

Version 1.0

Initial release with 18 custom nodes
Image list operations
Tiling and merging capabilities
Color adjustment tools
Utility nodes for workflow optimization

Note: This is a custom node collection for ComfyUI. Make sure you have ComfyUI installed and running before using these nodes.