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Image Outpainting

Extends images beyond their original canvas using RunComfy's edit endpoints. Routes across Nano Banana 2 Edit for spatial language ("add 30% to the left"), GPT Image 2 Edit when you need reference matching, or FLUX Kontext Pro for maximum preservation. The most common use is aspect ratio swaps: square to 16:9 for banners, portrait to 9:16 for social, uncropping product shots or historical photos. Nano Banana 2 works well if you prompt the canvas change first, describe what extends, then explicitly preserve the original content. If you hit visible seams or lighting mismatches at the boundary, you'll need to step up to a ComfyUI workflow with proper seam handling. Not for filling holes inside the frame, that's inpainting.

skills.sh installs
273.8K
GitHub stars
16
last updated
Aug 21, 2026

Install

$ npx -y skills add runcomfy-com/skills --skill image-outpainting --agent claude-code

Installs into .claude/skills of the current project.

Files

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

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Details

Repository
github.com/runcomfy-com/skills
Categories
Code Review & Quality, Marketing & SEO, CLI & Terminal, Generative Media
First seen
Jun 3, 2026

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