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.