---
name: nano-banana-pro-a99df82d313a
description: Generate images using Google's Nano Banana Pro (gemini-3-pro-image-preview). Accepts text prompts and optionally images (for editing/transformation) as INPUT. Returns generated IMAGES as OUTPUT. Use when user asks to create, generate, edit, or draw images, infographics, visualizations, diagrams, charts, or illustrations. Excellent for data-accurate infographics and text rendering.
allowed-tools: Bash(uv:*), Write, Read
---

# Nano Banana Pro Image Generator

Generate images using Google's advanced Nano Banana Pro model (`gemini-3-pro-image-preview`).

## Prerequisites

The user must have `GEMINI_API_KEY` environment variable set with a valid Google AI API key.

## Usage

The script is located in the same directory as this SKILL.md file. Run it with `uv run`:

```bash
uv run /path/to/skills/nano-banana-pro/generate_image.py "your prompt" -o output.png
```

When this skill is invoked, locate `generate_image.py` in the skill directory and run it.

### Parameters

| Parameter | Required | Description |
|-----------|----------|-------------|
| `prompt` | Yes | Text description of the image to generate or transformation to apply |
| `-o`, `--output` | Yes | Output filename (you decide the path based on context) |
| `-i`, `--image` | No | Input image(s) for editing/transformation or as context/reference (can be used multiple times) |
| `--aspect-ratio` | No | One of: `1:1`, `2:3`, `3:2`, `3:4`, `4:3`, `4:5`, `5:4`, `9:16`, `16:9`, `21:9` (default: `1:1`) |
| `--size` | No | Image size: `1K`, `2K`, `4K` (default: `1K`) |

### Examples

Basic image generation:
```bash
uv run generate_image.py "A sunset over mountains" -o sunset.png
```

Infographic with specific aspect ratio:
```bash
uv run generate_image.py "Infographic showing the water cycle with labeled stages" -o water_cycle.png --aspect-ratio 9:16
```

High-resolution ultrawide:
```bash
uv run generate_image.py "Professional photo of a modern office space" -o office.png --aspect-ratio 21:9 --size 4K
```

Edit an existing image:
```bash
uv run generate_image.py "Add a sunset sky to this image" -i photo.png -o edited.png
```

Transform with style:
```bash
uv run generate_image.py "Make this look like a watercolor painting" -i input.jpg -o watercolor.png
```

Combine multiple images:
```bash
uv run generate_image.py "Create a collage blending these images together" -i img1.png -i img2.png -o collage.png
```

Use image as context/reference:
```bash
uv run generate_image.py "Generate a new landscape in the same style as this reference" -i reference.png -o new_landscape.png
```

## Model Capabilities

Nano Banana Pro excels at:
- **Accurate infographics** with real data (uses Google Search grounding)
- **Text rendering** in images
- **Image editing and transformation** from input images
- **Context-aware generation** using reference images for style, composition, or subject
- **Cartographic visualizations** and maps
- **Detailed instruction following**
- **Chain-of-thought reasoning** for complex visual tasks

## Output

The script prints:
- Progress message while generating
- Path to saved image on success
- Any text response from the model
- Error message if no image was generated


---
Source attribution: nicepkg
Original project: https://github.com/nicepkg/ai-workflow/blob/d167b41af7f013d3d3c35dca87a6cc72817721d2/workflows/talk-to-slidev-workflow/.claude/skills/nano-banana-pro/SKILL.md
License: MIT
License information: https://opensource.org/license/mit
Original upstream instructions; downloaded from Mega AI Hub.

## Upstream license notice

MIT License

Copyright (c) 2025 nicepkg

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.



# Mega AI Hub resource metadata

Creator / publisher: nicepkg
Original project: https://github.com/nicepkg/ai-workflow/blob/d167b41af7f013d3d3c35dca87a6cc72817721d2/workflows/talk-to-slidev-workflow/.claude/skills/nano-banana-pro/SKILL.md
Attribution basis: Source repository record

Fields of work: Design, Marketing
Roles: Content Marketer, Graphic Designer, Influencer Marketer, Social Media Manager, UX Designer
Specialties: Design
Tools: Google Ai
Country applicability: Country not specified
Classification basis: Source catalog labels
Instruction SHA-256: 4a4baabca388430d55fa12788fa3119b2ab7b45ae35cd52bdc0a1d5c395ec96d