Empty Latent Image Plus

Empty Latent Image Plus

<img width="1110" height="867" alt="ELIP" src="https://github.com/user-attachments/assets/19e1d176-1dae-439e-a61f-55a4a2f4a20c" />

Empty Latent Image Plus is a compact ComfyUI custom node based on the core Empty Latent Image node.

It creates an empty latent image and also outputs the current WIDTH and HEIGHT as INT values. This is useful when another node or workflow needs the same canvas size as separate width and height inputs.

Installation

Clone this repository into your ComfyUI custom_nodes folder:

cd ComfyUI/custom_nodes
git clone https://github.com/ukr8b3g-cmyk/Empty-Latent-Image-Plus.git

Then restart ComfyUI.

Main Features

• Creates a standard ComfyUI latent image.
• Outputs LATENT, WIDTH, and HEIGHT.
• Keeps width, height, and batch_size simple and visible.
• Includes a swap W/H toggle that swaps width and height.
• Includes foldable User Preset controls.
• Includes foldable Advanced controls.
• Stores user presets in presets.json.
• Does not include fixed model-specific presets.

Typical Use

Use this node as a drop-in replacement for the core Empty Latent Image node when you also want WIDTH and HEIGHT outputs.

For example, it can be used with workflows that need one shared size value for:

• latent image generation
• canvas or framing helper nodes
• prompt or layout helper nodes
• nodes that accept INT width and height inputs

This node is model-agnostic. It is not limited to SDXL, SD1.5, or Krea-style workflows.

Intended Compatibility

This node is intended for ordinary ComfyUI workflows that can use a standard Empty Latent Image-compatible latent input.

Typical targets include:

• SD1.5 workflows
• SDXL workflows
• Pony-based workflows
• Flux-based workflows
• Chroma-based workflows
• Qwen Image-based workflows
• Krea2 workflows
• other normal Empty Latent Image-compatible image workflows

It does not replace dedicated video latent nodes or model-specific latent nodes.

UI Controls

width / height / batch_size

These behave like the core ComfyUI Empty Latent Image node.

swap W/H

swap W/H is a toggle-style control. The default value is false.

When set to true, it swaps the current width and height values. The WIDTH and HEIGHT outputs follow the swapped values.

Changing it back to false does not swap the values again.

Example:

Before: width 768, height 1024
After:  width 1024, height 768

batch_size is not changed.

User Preset

User Preset is foldable.

When expanded, it shows:

Preset
Name
Save
Load
Delete

Presets are saved to:

ComfyUI-Empty-Latent-Image-Plus/presets.json

Saved preset data:

{
  "Preset Name": {
    "width": 768,
    "height": 1024,
    "batch_size": 1
  }
}

Advanced

Advanced is foldable.

It contains:

• Size Step
• Clamp on Load
• Show Info
• Info

Size Step controls the rounding step used when loading presets with Clamp on Load enabled.

Clamp on Load keeps loaded preset values inside safe ranges and rounds width and height to the selected step.

Show Info controls the size information line.

The info line shows:

width x height | aspect ratio | megapixels

Installation

Copy this folder:

ComfyUI-Empty-Latent-Image-Plus

into:

ComfyUI/custom_nodes/

Then restart ComfyUI.

Expected node:

Empty Latent Image Plus

Expected category:

latent/plus

Technical Specification

Inputs

width       INT  default 512  min 16  max 16384  step 8
height      INT  default 512  min 16  max 16384  step 8
batch_size  INT  default 1    min 1   max 4096   step 1

Outputs

LATENT
WIDTH   INT
HEIGHT  INT

Latent Shape

The backend creates the latent tensor with:

[batch_size, 4, height // 8, width // 8]

batch_size is clamped to a minimum of 1.

Backend Files

empty_latent_image_plus.py
__init__.py
presets.json

The backend also exposes local preset routes:

GET  /empty_latent_image_plus/presets
POST /empty_latent_image_plus/presets/save
POST /empty_latent_image_plus/presets/delete

Frontend File

web/js/empty_latent_image_plus.js

The frontend adds:

• swap W/H
• foldable User Preset controls
• foldable Advanced controls
• hidden widget layout handling
• size information display

Non-goals

This node intentionally does not include:

• SDXL fixed presets
• SD1.5 fixed presets
• Flux fixed presets
• video latent replacement behavior
• model auto-detection
• ratio lock enabled by default

The node should remain a small, general-purpose latent helper.

Verification Checklist

• ComfyUI starts without Python import errors.
• The node appears as Empty Latent Image Plus.
• The category is latent/plus.
• Inputs are width, height, and batch_size.
• Outputs are LATENT, WIDTH, and HEIGHT.
• LATENT works like the core Empty Latent Image output.
• WIDTH matches the current width.
• HEIGHT matches the current height.
• batch_size cannot execute below 1.
• swap W/H swaps width and height only.
• User Preset can save, load, and delete presets.
• Advanced can show or hide info controls.
• No fixed model-specific presets are shown by default.