ComfyUI Hires Fix Ultra - All in One

🚀 The ultimate, high-performance Hires Fix solution for ComfyUI.

This node simplifies your workflow by combining latent/model upscaling, sampling, and advanced color restoration into a single, VRAM-efficient block. Say goodbye to "color washing" and complex spaghetti workflows.

✨ Key Features

• 📦 Unified Workflow: Replaces 6+ nodes (VAE Encode, Latent Upscale, KSampler, VAE Decode, Color Match, etc.) with one clean interface.
• 🎨 Advanced Color Correction: Features Deep Histogram Matching to eliminate the common "graying out" or "fading" effect during high-denoise upscales.
• 🛡️ OOM Prevention (Tiled VAE): Built-in Tiled VAE support for both encoding and decoding, allowing you to upscale to 4K and beyond even on mid-range GPUs.
• 🚀 Hybrid Upscaling: Choose between Model-based upscaling (using ESRGAN, Real-ESRGAN, etc.) or Latent-based methods (Bicubic, Bislerp, Area, etc.).
• 📐 Smart Resizing: Automatically calculates pixel-perfect dimensions (multiples of 8) based on your upscale factor.

🛠 Installation

1. Open your terminal and go to the ComfyUI/custom_nodes/ folder.
2. Clone the repository:

   git clone https://github.com/ThetaCursed/ComfyUI-HiresFix-Ultra-AllInOne.git

3. Restart ComfyUI.

🚀 How to Use

1. Add the node: Image/Upscaling -> Hires Fix Ultra - All in One.
2. Inputs:
   • Connect your base Image, Model, VAE, and Conditioning.
   • (Optional) Connect an Upscale Model if you select "Model" as the upscale method.
3. Settings:
   • upscale_by: Set your target multiplier (e.g., 1.5x or 2.0x).
   • denoise: Set between 0.30 - 0.55 for extra detail without losing the original composition.
   • color_fix_type: Use "Deep Histogram" to maintain 1:1 color accuracy from your low-res original.

⚙️ Parameters Reference

Parameter	Function
upscale_method	Supports standard Latent methods (Bicubic, Bislerp) or "Model" for ESRGAN-style upscalers.
color_fix_type	Deep Histogram: High-quality color matching. Standard: Mean/Std matching. None: Default behavior.
tile_size_vae	Controls the Tiled VAE size. Lower this (e.g., 512) if you encounter Out of Memory errors.
upscale_by	The scale factor. The node automatically snaps the resolution to the nearest multiple of 8.

🧩 SEO & Search Tags

ComfyUI, Hires Fix, High-Res Fix, Stable Diffusion, Upscaling, Color Drift Fix, Tiled VAE, Latent Upscale, Image Restoration, AI Art Workflow.

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If you find this node useful, please leave a ⭐ on GitHub!