ComfyUI-311-Inpaint

Inpaint helper nodes for ComfyUI (311 series).

Add Margins 311

Default (square_longest)

Matches the working workflow:

1. Take the longest side of the input image
2. Build a black 1:1 canvas of that size
3. Multiply by scale_by = 1.25
4. Center the original image and mask on that canvas (no content stretch)

Example: 500×712 → longest 712 → canvas 890×890 (712 × 1.25).

Setting	Default
size_mode	square_longest
scale_by	1.25
fill_color	#000000
halign / valign	center

Other modes

• add_margins: symmetric extras or custom per-side (pixels / percent)
• target_size: fit (contain) onto absolute target_width × target_height