ComfyUI-RandomSize

A ComfyUI custom node that randomly selects a height and width pair from a list in a config file. The core use is to provide variety in generations of large numbers of images at once.

Presets included:

• 9 SD 1.5-friendly resolutions.
• 9 SDXL-friendly resulotions
• 9 Resolutions centered around 512x512
• 9 around 640x640
• 13 around 768x768
• 15 around 896x896
• 17 around 1024x1024

Install

cd [path to ComfyUI]/custom_nodes
git clone https://github.com/JerryOrbachJr/ComfyUI-RandomSize.git

Usage

• Select a seed. The seed is the index of a size in the yaml file, startting with 0. The same seed will always give the same output. Set control after generate to fix to fix the output.
• Control After(/Before) Generate: set to increment, decrement, or random to get a random size from the preset each generation.
• Select a preset. The default preset is SD 1.5 if none is chosen.
• Run your queue.

Adding Presets

• Add a text file with name of your choosing and extension ".yaml" in [path to ComfyUI]/custom_nodes/ComfyUI-RandomSize/sizes/custom
• The first line of your file needs to be sizes:
• Every successive line should be a size in the format - WIDTHxHEIGHT replacing WIDTH and HEIGHT with pixel numbers e.g. - 768x512
• Restart Comfy to see your Preset in the list