random_resolution_picker

Random Resolution Picker

A ComfyUI node that randomly picks a width and height from a user-defined list on every generation.

Inputs

Input	Type	Description
resolutions	STRING (multiline)	One width,height per line (see format below)
auto_randomize	BOOLEAN	When true, picks a new pair every queue run (ignores seed)
seed	INT	Fixed seed for deterministic picks when auto_randomize is false

Outputs

Output	Type	Description
width	INT	Picked width in pixels
height	INT	Picked height in pixels
label	STRING	Human-readable label, e.g. 1664x928

Resolution list format

# Lines starting with # are comments and are ignored.
# Blank lines are also ignored.
1328,1328
1664,928
928,1664

Weighted entries

Duplicate lines intentionally increase probability. List a size twice to make it twice as likely:

# 1328x1328 is 2× more likely than 1664x928
1328,1328
1328,1328
1664,928

PNG metadata

When a Save Image node is downstream, this node writes its pick into the PNG metadata under the key RandomResolutionPicker:

{
  "resolution": "1664x928",
  "resolution_width": 1664,
  "resolution_height": 928,
  "resolution_seed": 1234567
}

Usage tip

Wire width and height directly into Empty Latent Image's width/height inputs.
With auto_randomize=true, every queue run picks a fresh resolution from your list.