⭐ Star Box Drawer

Every so often you need a rectangle drawn on an image inside ComfyUI, and the standard advice - "just use a script" - is no help at all. Star Box Drawer is the pack's version of that "draw a box" utility: feed it an image, tell it where the box goes, and it paints a filled or outlined rectangle straight into the frame. Dead simple, exactly one job, and it's been in the StarNodes toolbox since the pack's early helper-node days.

It sits in ⭐StarNodes/Helpers And Tools and uses Pillow's ImageDraw under the hood, so there are no exotic dependencies - this node loads even if half the pack's heavy optional libraries are missing.

Why you'd actually reach for it

The honest uses are more varied than you'd think:

• Annotation / batching - mark a region of interest on an image before it feeds into a regional or attention-guided workflow.
• Cropping previews - draw a box over an image to visualize a crop region before a crop node runs.
• Mask or composite debugging - overlay a box on the source image so you can see in one glance whether your coordinates are actually pointing where you think.

It's not a glamorous node, and it's not trying to be. If you need arbitrary polygons, alpha masks or blending, this isn't the tool - but for a rectangle, it's the tool.

Inputs and output

• image - the frame to draw on.
• x, y - top-left corner of the box, in pixels (0–8192).
• width, height - box size in pixels.
• color - one of five named colors: white, red, blue, green, black. No hex codes here; if you need a custom color you're in the wrong node.
• filled - on (default) paints a solid rectangle; off draws only an outline.
• line_width - outline thickness (1–50), only used when filled is off.

One IMAGE output, same size as the input, ready for a preview or a Save node.

Installing it

Standard StarNodes install - ComfyUI Manager, search Starnodes, install, restart:

cd ComfyUI/custom_nodes
git clone https://github.com/Starnodes2024/ComfyUI_StarNodes
cd ComfyUI_StarNodes
pip install -r requirements.txt

Then double-click the canvas and search star, or look under the ⭐StarNodes category.

The one trap

The coordinates are absolute pixel values, not percentages, and there's no bounds-checking feedback - a box whose x + width exceeds the image just gets clipped at the edge, silently. If you're drawing on variable-size images (like batches of video frames), the same coordinates that look great on a 1280px frame will land somewhere unexpected on a 720px one. Figure out your dimensions first, or pipe the frame's width/height from a helper node into the position inputs if your setup can produce them. For a static-size workflow, set it once and forget it - this is a "configure and walk away" node, not a live-tuning one.