gemini-imagegen

Installation
SKILL.md

Gemini Image Generation (Nano Banana Pro)

Generate and edit images using Google's Gemini API. The environment variable GEMINI_API_KEY must be set.

Default Model

Model Resolution Best For
gemini-3-pro-image-preview 1K-4K All image generation (default)

Note: Always use this Pro model. Only use a different model if explicitly requested.

Quick Reference

Default Settings

  • Model: gemini-3-pro-image-preview
  • Resolution: 1K (default, options: 1K, 2K, 4K)
  • Aspect Ratio: 1:1 (default)
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Installs
6
GitHub Stars
219
First Seen
Jan 24, 2026