Gemini Image Simple

Gemini Image Simple

Generate and edit images using Google's Nano Banana Pro (Gemini 3 Pro Image) - the highest quality image generation model.

Why This Skill

| Feature | This Skill | Others (nano-banana-pro, etc.) |

|---------|------------|-------------------------------|

| Dependencies | None (stdlib only) | google-genai, pillow, etc. |

| Requires pip/uv | ❌ No | ✅ Yes |

| Works on Fly.io free | ✅ Yes | ❌ Fails |

| Works in containers | ✅ Yes | ❌ Often fails |

| Image generation | ✅ Full | ✅ Full |

| Image editing | ✅ Yes | ✅ Yes |

| Setup complexity | Just set API key | Install packages first |

Bottom line: This skill works anywhere Python 3 exists. No package managers, no virtual environments, no permission issues.

Quick Start

Generate
python3 /data/clawd/skills/gemini-image-simple/scripts/generate.py "A cat wearing a tiny hat" cat.png

Edit existing image  
python3 /data/clawd/skills/gemini-image-simple/scripts/generate.py "Make it sunset lighting" edited.png --input original.png

Usage

Generate new image

python3 {baseDir}/scripts/generate.py "your prompt" output.png

Edit existing image

python3 {baseDir}/scripts/generate.py "edit instructions" output.png --input source.png

Supported input formats: PNG, JPG, JPEG, GIF, WEBP

Environment

Set GEMINI_API_KEY environment variable. Get one at https://aistudio.google.com/apikey

How It Works

Uses Nano Banana Pro (nano-banana-pro-preview) - Google's highest quality image generation model:

• -Pure urllib.request for HTTP (no requests library)
• -Pure json for parsing (stdlib)
• -Pure base64 for encoding (stdlib)

That's it. No external packages. Works on any Python 3.10+ installation.

Model

Currently using: nano-banana-pro-preview (also known as Gemini 3 Pro Image)

Other available models (can be changed in generate.py if needed):

• -gemini-3-pro-image-preview - Same as Nano Banana Pro
• -imagen-4.0-ultra-generate-001 - Imagen 4.0 Ultra
• -imagen-4.0-generate-001 - Imagen 4.0
• -gemini-2.5-flash-image - Gemini 2.5 Flash with image gen

Examples

Landscape
python3 {baseDir}/scripts/generate.py "Misty mountains at sunrise, photorealistic" mountains.png

Product shot
python3 {baseDir}/scripts/generate.py "Minimalist product photo of a coffee cup, white background" coffee.png

Edit: change style
python3 {baseDir}/scripts/generate.py "Convert to watercolor painting style" watercolor.png --input photo.jpg

Edit: add element
python3 {baseDir}/scripts/generate.py "Add a rainbow in the sky" rainbow.png --input landscape.png