generate-image

Original：🇺🇸 English

Translated

Generate images from a text prompt using Google's Nano Banana Pro (Gemini 3 Pro Image) with configurable aspect ratio, resolution (1K/2K/4K), and up to 5 reference images. Use when the user wants to generate an image, produce artwork for a blog post, create a product photo, mock up a portrait or cinematic scene, or when they mention "generate an image", "make a picture", "Nano Banana", or "Gemini image".

2installs

Sourcelaurigates/claude-plugins

Added on2026-05-01

NPX Install

npx skill4agent add laurigates/claude-plugins generate-image

SKILL.md Content

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Generate images using Google's Nano Banana Pro (Gemini 3 Pro Image) model.

When to Use This Skill

Use this skill when...	Use imagemagick-conversion instead when...
Producing a brand-new image from a text prompt	Converting, resizing, or compressing an existing image
Generating cinematic, product, or portrait artwork	Building thumbnails or batch-processing many files
Mixing up to five reference images into a new render	Applying deterministic transforms (rotate, crop, format)

Use this skill when...	Use mermaid-diagrams or d2-diagrams instead when...
The output is a photographic or illustrative image	The output is a flowchart, sequence, or architecture diagram
Quality settings (1K/2K/4K) and aspect ratio matter	Diagram-as-code rendering would be more maintainable

Arguments

{{arg:1}} (required): Image description
--aspect: Aspect ratio (
```
1:1
```
,
```
2:3
```
,
```
3:2
```
,
```
3:4
```
,
```
4:3
```
,
```
4:5
```
,
```
5:4
```
,
```
9:16
```
,
```
16:9
```
,
```
21:9
```
) - default:
```
16:9
```
--resolution: Image resolution (
```
1K
```
,
```
2K
```
,
```
4K
```
) - default:
```
2K
```
--reference: Path to reference image (repeatable, max 5)
--output: Custom output path

Environment Requirements

Verify API key is set:

bash

echo "API Key: ${GOOGLE_API_KEY:+SET}${GEMINI_API_KEY:+SET}"

If not set, get one from: https://aistudio.google.com/apikey

Usage Examples

/generate-image "A beautiful mountain landscape at sunset"
/generate-image "Product photo on white background" --aspect 1:1 --resolution 4K
/generate-image "Portrait photo" --aspect 3:4
/generate-image "Cinematic scene" --aspect 21:9
/generate-image "Similar style" --reference existing_image.png

Task Workflow

Parse arguments:
- Extract prompt from {{arg:1}}
- Identify aspect ratio, resolution, and reference images

Build command:

bash

uv run python .claude/scripts/nano_banana_pro.py \
  "{{arg:1}}" \
  --aspect {{aspect|default:"16:9"}} \
  --resolution {{resolution|default:"2K"}} \
  {{reference_flags}}

Execute generation:

bash

uv run python .claude/scripts/nano_banana_pro.py "PROMPT" --aspect RATIO --resolution SIZE

Report results:
- Show path to generated image
- Note any reference images used
- Offer next steps (regenerate, different aspect, etc.)

Output

Default output:

./generated/image_YYYYMMDD_HHMMSS.png

Custom output with

--output

:

/generate-image "Scene" --output custom_name.png

Reference Images

Reference images help maintain consistency:

Use existing images as style references
Keep subjects consistent across generations
Match artistic styles

When using references, describe the relationship:

"Similar style to the reference"
"This person in a different setting"
"Same product, different angle"

Maximum 5 reference images per generation.

Aspect Ratio Quick Reference

Use Case	Ratio
Square/Instagram	1:1
Portrait	3:4, 9:16
Landscape	16:9
Ultrawide	21:9
Photo	3:2, 4:3

Resolution Quick Reference

Use Case	Resolution
Preview	1K
Standard	2K
High quality	4K

Error Handling

No API key: Set
```
GOOGLE_API_KEY
```
or
```
GEMINI_API_KEY
```
Generation failed: Simplify prompt or reduce references
Rate limited: Wait and retry

generate-image

NPX Install

Tags

SKILL.md Content

When to Use This Skill

Arguments

Environment Requirements

Usage Examples

Task Workflow

Output

Reference Images

Aspect Ratio Quick Reference

Resolution Quick Reference

Error Handling