Update Notes

2026-07-09: Added more Background Effect presets from local WebP assets, including travel streets, transport interiors, arcades, capsule hotel, pachinko/slot interiors, sauna, vending machine corner, data center, showroom, planetarium, skate park, recording booth, and desert highway. Background thumbnails now use the updated cache version. Replaced the recommended test workflow with workflow/Krea2-BBOX-Node-Test.json.

Krea2 BBOX Prompter Suite

ComfyUI custom node suite for manually drawing BBOX regions on a canvas and converting that layout into a structured prompt for Krea2.

You specify where each subject, object, or visible text region should appear, write prompts for each box, and export a JSON-style prompt that can be passed to Krea2.

BBOX regions are layout guidance for Krea2. They are not strict masks. Final placement still depends on the model, prompt wording, and the overall scene context.

Recommended environment: ComfyUI 0.26.0 or later.

<Important Note>

For full setup details, examples, updates, and troubleshooting,

please see the GitHub repository linked below.

ukr8b3g-cmyk/Krea2-BBOX-Prompter

Quick Installation

For a new install:

cd C:\path\to\ComfyUI\custom_nodes
git clone https://github.com/ukr8b3g-cmyk/Krea2-BBOX-Prompter.git Krea2-BBOX-Prompter-Suite

If the folder already exists, update it instead:

cd C:\path\to\ComfyUI\custom_nodes\Krea2-BBOX-Prompter-Suite
git pull

Then restart ComfyUI and hard refresh the browser if the old UI is still cached:

Ctrl + F5

What This Node Can Do

• Draw BBOX regions manually to guide placement of people, objects, text, and other elements.

• Enter Object / Text prompts per colored slot.

  • Object: for visual elements such as people, objects, or scene parts.

  • Text: for visible text that should actually appear inside the image.

• Use SCENE / BACKGROUND to describe the overall image intent and environment.

• Add per-slot framing hints such as Cowboy shot, Full body, and Upper body.

• Add per-slot camera angle hints such as Front view, Low angle, and Top-down view.

• Generate a Krea2-oriented JSON prompt with the Export node.

• Connect width / height to EmptyLatentImage to keep the canvas size and generation size in sync.

• Add photographic, film, portrait, flash, art, lighting, and mood effects with the Prompt Effect node.

• Choose style presets from a thumbnail-card UI using local WebP thumbnails.

Node: The Krea2 diffusion_model that I merged it, aiming for a clear, soft-core style that works well for both SFW and sensitive content; I plan to release it at a later date.