nano-banana-build

Original：🇺🇸 English
Translated

Generate and edit high-quality images using Gemini 2.5 Flash Image and Gemini 3 Pro Image (Nano Banana). Supports Text-to-Image, Style Transfer, Virtual Try-On, and Character Consistency.

6installs
Sourcecnemri/google-genai-skills
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NPX Install

npx skill4agent add cnemri/google-genai-skills nano-banana-build

Tags

Translated version includes tags in frontmatter
image-generationimage-editinggemini-modelsgoogle-genai-sdknano-banana

SKILL.md Content

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Nano Banana Image Generation Skill

Use this skill to generate and edit images using the 
google-genai
Python SDK with Gemini's specialized image models (Nano Banana).

Quick Start Setup

python
from google import genai
from google.genai import types
from PIL import Image
import io

client = genai.Client()

Reference Materials

  • Model Capabilities: Comparison of Gemini 2.5 vs 3 Pro, resolutions, and token costs.
  • Image Generation: Text-to-Image, Interleaved Text/Image.
  • Image Editing: Subject Customization, Style Transfer, Multi-turn Editing.
  • Thinking Process: Understanding thoughts and signatures (Gemini 3 Pro).
  • Recipes: Extensive collection of examples (Logos, Stickers, Mockups, Comics, etc.).
  • Source Code: Deep inspection of SDK internals.

Available Models

  • gemini-2.5-flash-image
    (Nano Banana)    : Fast, high-quality generation and editing. Best for most use cases.
  • gemini-3-pro-image-preview
    (Nano Banana Pro)    : Highest fidelity, supports 
    2K
    and 
    4K
    resolution, complex prompt adherence, and grounding.

Common Workflows

1. Fast Generation

python
response = client.models.generate_content(
    model='gemini-2.5-flash-image',
    contents='A cute robot eating a banana',
    config=types.GenerateContentConfig(
        response_modalities=['IMAGE']
    )
)

2. High-Quality Editing

python
response = client.models.generate_content(
    model='gemini-3-pro-image-preview',
    contents=[
        types.Part.from_uri(file_uri='gs://.../shoe.jpg', mime_type='image/jpeg'),
        "Change the color of the shoe to neon green."
    ],
    config=types.GenerateContentConfig(response_modalities=['IMAGE'])
)