Nano Banana One Shop

All-in-one image generation and editing using the full Nano Banana model family. Pick the right model for the job.

Prerequisites

• Node.js (v18+): Before running any command, verify with which node. If missing, tell the user to install Node.js (e.g. via brew install node or https://nodejs.org).

Models

Flag	Model	Best for
--model nano-banana	Gemini 3.1 Flash Image	Default. Fast, balanced quality and cost.
--model nano-banana-pro	Gemini 3 Pro Image	Highest quality, up to 4K, slower.
--model nano-banana-2	Gemini 2.5 Flash Image	Speed-optimized, high-volume batch tasks.

Generate an image

node {baseDir}/scripts/generate-image.js --prompt "a cat sitting on mars" --filename "cat-on-mars.png"

Use a specific model

node {baseDir}/scripts/generate-image.js --prompt "oil painting of a sunset" --filename "sunset.png" --model nano-banana-pro --resolution 4K

Edit a single image

node {baseDir}/scripts/generate-image.js \
  --prompt "make the sky purple" \
  --filename "edited.png" \
  -i "/path/to/input.png" \
  --model nano-banana-pro

Multi-image composition (up to 14 images)

node {baseDir}/scripts/generate-image.js \
  --prompt "combine these into a collage" \
  --filename "collage.png" \
  -i img1.png -i img2.png -i img3.png

Options

Flag	Short	Default	Description
--prompt	-p	required	Image description or editing instruction
--filename	-f	required	Output filename
--input-image	-i	--	Input image(s), repeatable, max 14
--model	--	nano-banana	nano-banana, nano-banana-pro, or nano-banana-2
--resolution	-r	1K	1K, 2K, or 4K
--aspect-ratio	--	--	e.g. 1:1, 16:9, 4:3, 3:4, 9:16

API key