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+# ComfyUI-ReferenceChain
+
+A ComfyUI custom node that simplifies working with edit models (like Flux-2-klein) that accept multiple reference images. Instead of chaining multiple "Reference Latent" nodes together, this node lets you add any number of images through a single, easy-to-use interface.
+
+![Reference Chain Conditioning Node](readme_resources/Screenshot.PNG)
+
+## Features
+
+- **Multiple image input** - Add as many reference images as you need through a visual list interface
+- **Drag and drop** - Drop images directly onto the node
+- **Built-in scaling** - Automatically scales images to target megapixels before encoding
+- **API-friendly** - Includes a Base64 variant for programmatic usage
+- **Native styling** - Matches ComfyUI's look and feel
+
+## Nodes
+
+### Reference Chain Conditioning
+
+The main node for interactive use. Add images through the UI, and they'll be automatically processed and chained into a single conditioning output.
+
+**Inputs:**
+- `conditioning` - Input conditioning to append reference latents to
+- `vae` - VAE model for encoding images to latents
+- `upscale_method` - Scaling algorithm (nearest-exact, bilinear, area, bicubic, lanczos)
+- `scale_megapixels` - Target size for images before encoding (default: 1.0 MP)
+
+**Outputs:**
+- `conditioning` - Modified conditioning with all reference latents
+- `first_image_scaled` - The first image after scaling (useful for preview)
+
+### Reference Chain Conditioning (Base64)
+
+Same functionality but accepts base64-encoded images. Ideal for API workflows.
+
+**Input format:**
+```json
+["data:image/png;base64,iVBORw0KGgo...", "iVBORw0KGgo..."]
+```
+
+Or a single base64 string without JSON array wrapper.
+
+## Installation
+
+### Via ComfyUI Manager
+
+Search for "ReferenceChain" in the ComfyUI Manager and click Install.
+
+### Manual Installation
+
+```bash
+cd ComfyUI/custom_nodes
+git clone https://github.com/remingtonspaz/ComfyUI-ReferenceChain.git
+```
+
+Restart ComfyUI after installation.
+
+## Usage
+
+1. Add the **Reference Chain Conditioning** node to your workflow
+2. Connect your conditioning and VAE inputs
+3. Click "choose file to upload" or drag images onto the node
+4. Connect the output conditioning to your sampler
+
+The node processes images in order, scaling each to the target megapixels, encoding through the VAE, and appending to the conditioning - equivalent to manually chaining multiple Reference Latent nodes.
+
+## Requirements
+
+No additional dependencies - uses only libraries already included with ComfyUI (numpy, torch, Pillow).
+
+## License
+
+MIT
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