image-outpainting

Image Outpainting

Extend a still beyond its original canvas — uncrop, change aspect ratio, fill in what the camera didn't capture. This skill routes across the identity-preserving edit endpoints in the RunComfy catalog, picking the right one for prose-driven extension, reference-style matching, or brand-locked continuation.

runcomfy.com · best-image-editing-models · CLI docs

Powered by the RunComfy CLI

# 1. Install (see runcomfy-cli skill for details)
npm i -g @runcomfy/cli      # or:  npx -y @runcomfy/cli --version

# 2. Sign in
runcomfy login              # or in CI: export RUNCOMFY_TOKEN=<token>

# 3. Outpaint
runcomfy run google/nano-banana-2/edit \
  --input '{"prompt": "...extend canvas...", "image_urls": ["..."]}' \
  --output-dir ./out

CLI deep dive: runcomfy-cli skill.

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Pick the right model

Listed by suitability for outpainting workflows.

Nano Banana 2 Edit — google/nano-banana-2/edit (default for prompt-shaped outpaint)

Identity-preserving edit; honors spatial language ("extend the canvas to the left and right by ~30%", "add sky above the building"). The result is a wider canvas with the original content preserved. Pick for: aspect-ratio change (square → 16:9), uncrop a portrait, extend a landscape photo with matching environment. Avoid for: pixel-precise extension matching texture seams — use a ComfyUI outpainting workflow.

GPT Image 2 Edit — openai/gpt-image-2/edit

Up to 10 reference images, layout-precise instruction following. Useful when outpainting needs to match a reference style or includes layout repositioning. Pick for: composite outpaint (extend canvas + paste in element from another image), layout repositioning during the canvas change. Avoid for: simple outpaint without external references.