What it does

GLIGEN lets you tell Stable Diffusion where objects go by drawing boxes on a canvas. This project wraps that capability in a Flask web app that talks to ComfyUI behind the scenes. You sketch grounding boxes, label them, add style prompts and LoRAs, then queue the job to your local ComfyUI instance.

The interesting bit

The whole thing is essentially a friendly skin over ComfyUI’s node graph. The author admits the positive prompt works better for style tags than scene description — a small but honest hint that the underlying model still has opinions about composition.

Key highlights

• Drag-and-draw bounding boxes with move/resize handles
• Save and reload sessions to file
• VAE and sampler selection exposed in the UI
• Aspect ratio presets added recently
• LoRA stacking with per-weight adjustment
• Requires ComfyUI running locally plus the GLIGEN safetensors model

Caveats

• Hardcoded to Stable Diffusion 1.5 checkpoints; no SDXL mentioned
• The “save the session the session” typo in the README suggests light proofreading
• Port wiring between Flask (5000) and ComfyUI (8188) is manual and easy to mismatch

Verdict

Worth a spin if you’re already running ComfyUI and tired of wiring GLIGEN nodes by hand. Skip it if you need SDXL support or a fully self-contained installer.