nano-image-generator

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Generate images using Nano Banana Pro (Gemini 3 Pro Preview). Use when creating app icons, logos, UI graphics, marketing banners, social media images, illustrations, diagrams, or any visual assets. Triggers include phrases like 'generate an image', 'create a graphic', 'make an icon', 'design a logo', 'create a banner', or any request needing visual content.

1installs

Sourcesolidspoon/dashplayer

Added on2026-02-14

NPX Install

npx skill4agent add solidspoon/dashplayer nano-image-generator

SKILL.md Content

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Nano Image Generator

Generate images using Nano Banana Pro (Gemini 3 Pro Preview) for any visual asset needs.

Requirements

在项目根目录

.env

中配置：

```
apikey
```
（或
```
APIKEY
```
）

baseurl

（或

BASEURL

，例如

https://generativelanguage.googleapis.com/v1beta/models

）

兼容回退：若未找到

apikey/APIKEY

，脚本会尝试

GEMINI_API_KEY

。

Quick Start

bash

python scripts/generate_image.py "A friendly robot mascot waving" --output ./assets/mascot.png

Script Usage

bash

python scripts/generate_image.py <prompt> --output <path> [options]

Required:

```
prompt
```
- Image description
```
--output, -o
```
- Output file path

Options:

```
--aspect, -a
```
- Aspect ratio (default:
```
1:1
```
)
- Square:
```
1:1
```
- Portrait:
```
2:3
```
  ,
```
3:4
```
  ,
```
4:5
```
  ,
```
9:16
```
- Landscape:
```
3:2
```
  ,
```
4:3
```
  ,
```
5:4
```
  ,
```
16:9
```
  ,
```
21:9
```
```
--size, -s
```
- Resolution:
```
1K
```
,
```
2K
```
(default),
```
4K
```

Workflow

Determine output location - Place images where contextually appropriate:
- App icons →
```
./assets/icons/
```
  or
```
./public/icons/
```
- Marketing →
```
./marketing/
```
  or
```
./assets/images/
```
- UI elements →
```
./src/assets/
```
  or
```
./public/images/
```
- General →
```
./generated/
```
Craft effective prompts - Be specific and descriptive:
- Include style: "flat design", "3D rendered", "watercolor", "minimalist"
- Include context: "for a mobile app", "website hero image", "social media post"
- Include details: colors, mood, composition
Choose appropriate settings:
- Icons/logos →
```
--aspect 1:1
```
- Banners/headers →
```
--aspect 16:9
```
- Mobile screens →
```
--aspect 9:16
```
- Photos →
```
--aspect 3:2
```
  or
```
4:3
```

Examples

App icon:

bash

python scripts/generate_image.py "Minimalist flat design app icon of a lightning bolt, purple gradient background, modern iOS style" \
  --output ./assets/app-icon.png --aspect 1:1

Marketing banner:

bash

python scripts/generate_image.py "Professional website hero banner for a productivity app, abstract geometric shapes, blue and white color scheme, modern and clean" \
  --output ./public/images/hero-banner.png --aspect 16:9

High-quality illustration:

bash

python scripts/generate_image.py "Detailed isometric illustration of a cozy home office setup with plants, warm lighting, digital art style" \
  --output ./assets/illustrations/office.png --size 4K

Prompt Tips

Be specific - "A red apple on a wooden table" vs "an apple"
Include style - "in the style of pixel art" or "photorealistic"
Mention purpose - "for a children's book" affects the output style
Describe composition - "centered", "rule of thirds", "close-up"
Specify colors - Explicit color palettes yield better results
Avoid - Don't ask for text in images (use overlays instead)

nano-image-generator

NPX Install

Tags

SKILL.md Content

Nano Image Generator

Requirements

Quick Start

Script Usage

Workflow

Examples

Prompt Tips