genimage

Generate, edit, or create any image — photos, illustrations, icons, thumbnails, hero images, banners, placeholder visuals, website graphics, social media assets, product shots, logos, diagrams, or any visual content. Use this skill whenever the task involves creating an image, populating a UI with visuals, generating placeholder or mockup images, editing or retouching a photo, applying style transfer, composing multiple images, or producing any graphic asset. Triggers on requests like "generate an image", "create a visual", "make a placeholder", "add a hero image", "design a thumbnail", "edit this photo", "create website graphics", "populate with images", or any task requiring image creation or manipulation.

install

source · Clone the upstream repo

git clone https://github.com/Ibrahim-3d/nano-banana-claude-plugin

Claude Code · Install into ~/.claude/skills/

T=$(mktemp -d) && git clone --depth=1 https://github.com/Ibrahim-3d/nano-banana-claude-plugin "$T" && mkdir -p ~/.claude/skills && cp -r "$T/skills/genimage" ~/.claude/skills/ibrahim-3d-nano-banana-claude-plugin-genimage && rm -rf "$T"

manifest: skills/genimage/SKILL.md

source content

Nano Banana — Image Generation

Generate and edit images via the Gemini API. If the API key is missing, run

/nano-banana:setup

Workflow

Determine the mode from the user's request:
- Creating a new image from text? → Text-to-image (no
```
--images
```
  )
- Editing/retouching an existing image? → Image editing (
```
--images source.png
```
  )
- Applying one image's style to another? → Style transfer (
```
--images style.png target.png
```
  )
- Combining or referencing multiple images? → Multi-image (
```
--images a.png b.png ...
```
  , up to 14)
- Need 2K or 4K output? → Add
```
--resolution 2K|4K
```
  to any mode above
Craft the prompt — describe the desired result narratively. See references/prompting-guide.md for domain-specific patterns (website visuals, placeholders, product shots, etc.).
Run the script:

python "$CLAUDE_PLUGIN_ROOT/scripts/genimage.py" --prompt "..." [options]

Show the result — read the output image and present it to the user.

Flags

Flag	Required	Purpose
`--prompt "text"`	Yes	Describe the desired image
`--output file.png`	No	Output path (default: `generated_image.png` )
`--images path [...]`	No	Input image(s) — omit for text-to-image
`--aspect-ratio RATIO`	No	`1:1` `2:3` `3:2` `3:4` `4:3` `4:5` `5:4` `9:16` `16:9` `21:9`
`--resolution RES`	No	`1K` `2K` `4K` (uppercase K required, triggers Pro model)

Models

Nano Banana 2 (
```
gemini-3.1-flash-image-preview
```
): Default. Fast, high-quality.
Nano Banana Pro (
```
gemini-3-pro-image-preview
```
): Auto-selected when
```
--resolution
```
is set. 4K output, advanced reasoning, high-fidelity text rendering.

Common Use Cases → Flags

Use case	Example command
Website hero image	`--prompt "..." --aspect-ratio 16:9`
Social media post	`--prompt "..." --aspect-ratio 1:1`
Mobile banner	`--prompt "..." --aspect-ratio 9:16`
Placeholder / mockup	`--prompt "..." --output placeholder.png`
Edit existing photo	`--prompt "remove the background" --images photo.png`
Style transfer	`--prompt "Apply watercolor style" --images style.png photo.png`
High-res asset	`--prompt "..." --resolution 4K`

Editing

All editing is text-guided — describe what to change ("replace the sky", "remove the person", "add a sunset") and Gemini identifies and modifies regions automatically. No masks needed.