💀Image Board

Sometimes the image you need is blank - a transparent canvas of a specific size to composite things onto. ComfyUI doesn't hand you one of those trivially, and 💀Image Board from the S4Tool-Image pack is the one-liner for it. The author's own description is refreshingly direct: it "generates a fully transparent canvas with the specified width and height."

Mechanically there's nothing to it: the node creates an RGBA image filled with fully transparent pixels at your requested size and converts it to a tensor. That's the whole job - and that's fine, because the point is that a transparent IMAGE tensor is a genuinely awkward thing to produce elsewhere. Most image-creation nodes force a color; most loaders want a file. This one just gives you the empty stage.

Inputs and output

• width (1–4096, default 512) and height (1–4096, default 512) - canvas size in pixels.

Output: image (IMAGE). Because it's fully transparent, it behaves differently from a colored canvas: composite it over anything and you see through it, so it's the safe base for "start empty, layer on top." You'll typically wire it into a composite/overlay node as the background, then drop cutouts onto it.

Where it slots into real workflows: building a multi-element layout board (layering several cutouts side by side onto a fixed-size transparent base), creating a fixed-dimension canvas for a tiling or grid operation, or feeding a "blank" into a pipeline that expects an image input and needs a no-op start. It pairs naturally with 💀Image Color (colored canvas) and 💀Image Blend With Alpha (cutouts) from the same pack.

Install

Pack install as usual:

cd ComfyUI/custom_nodes/
git clone https://github.com/S4MUEL-404/ComfyUI-S4Tool-Image.git
pip install -r ComfyUI-S4Tool-Image/requirements.txt

Or ComfyUI Manager → search "S4Tool-Image" → Install → restart. Pure Pillow, zero downloads.

Gotchas

• It's transparent, so it looks "empty" - in the preview it may render as a checkerboard or black; that's the alpha, not a bug.
• Size cap at 4096 - build bigger boards at 4096 and upscale, same as every canvas node.
• Not a colored background - if you wanted a white or colored backdrop, that's 💀Image Color. Board is strictly the transparent kind.

Minimal to the point of being forgettable - until the moment you need a blank canvas and realize how few nodes actually make one.