Extensions/Outline Alpha Snap Node for ComfyUI
ComfyUI Extension

Outline Alpha Snap Node for ComfyUI

This node adds an outside-only outline around the opaque region of an image while cleaning up semi‑transparent edge pixels and removing stray islands.

By dennisvink·Created 6 months ago·Updated 6 months ago· 0
dennisvink/comfyui-outline
Nodes1
On cloudLocal install
CategoryImage/Outline
Stars0
Updated6 months ago

Nodes (1)

Outline Alpha Snap
Image/Outline
Readme

ComfyUI Outline Alpha Snap

A ComfyUI custom node that adds an outside-only outline around the opaque region of an image while cleaning up semi‑transparent edge pixels and removing stray islands (keeps the largest connected component only).

Node

  • Name: Outline Alpha Snap
  • Category: Image/Outline
  • Inputs:
    • image (IMAGE)
    • width (INT): outline width in pixels (outside-only). 0 disables outline.
    • color (STRING): HTML hex color #RRGGBB or #RRGGBBAA
  • Output:
    • IMAGE

Notes

  • Preserves transparency, but clamps alpha to the cleaned mask (largest component only).
  • Semi‑transparent pixels adjacent to solid pixels are dropped (edge snap behavior).
  • RGB inputs are treated as fully opaque.

Install

Place this folder in custom_nodes/ and restart ComfyUI.

Example

  • width: 1
  • color: #222222