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AI SDK Nano Banana Image Edit
AI SDK Nano Banana Image Edit
Generate and edit images using Nano Banana 2.5 Flash. Create new images from text or edit existing ones with natural language. Includes version history and image comparison.
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Problems solved
Technical challenges this implementation handles out of the box.
- Edit existing images with Gemini Flash image editing
- Apply natural-language edit instructions to an uploaded image
- Compare before and after results in the demo UI
- Keep edit workflows client-visible without a custom image backend
Use cases
Products and workflows this pattern is designed to support.
- Creative retouch assistants
- Brand asset revision tools
- Product photo cleanup workflows
- Prompt-based image editing demos
Setup
Requirements, wiring steps, and what this pattern adds to your project.
Getting started
Pick how you want to pull this pattern in. Then wire env vars and routes the same way.
- 1
Download → Next.js app
Use Download → Next.js app in the preview toolbar. You get a zip scaffold (Pro downloads rewrite preview `/view/.../api/*` paths to `/api/*` automatically).
- 2
Extract the zip and install dependencies
Unzip the archive, then run `pnpm install` (or npm / yarn) in the project folder.
- 3
Fill .env.local
The download includes .env.local placeholders when needed. Add real values for: GOOGLE_AI_API_KEY, AI_GATEWAY_API_KEY.
- 4
Customize the agent and tool files
Adapt prompts, tools, and stop conditions in the generated project for your product.
- 5
Run the app and open the pattern route
Run `pnpm dev`, open the setup/checklist page if present, then navigate to the generated pattern route and verify responses.
Environment variables
Capabilities
AI SDK APIs
generateTextgenerateImagegatewayProviders
Gemini
External services
Upstash
Files added
9 filesapp/page.tsxapp/layout.tsxapp/create-image-action.tsxapp/edit-image-action.tsxlib/rate-limit.tslib/image-utils.tshooks/use-image-version.tshooks/image-version-context.tsxREADME.md
Dependencies
8 totalnpm packages
6UpstashAISDKlucide-reactmotionNext.jsReact
Registry components
alertbutton
Critical files
app/create-image-action.tsxServer action for image creation: uses generateText with gateway and IMAGE+TEXT response modalities. Shows the gateway pattern for Gemini image generation.
app/edit-image-action.tsxServer action for image editing: processes existing image data into base64 data URL, constructs a multimodal message with image + text edit instructions, and sends to Gemini flash image model.
lib/image-utils.tsShared image processing utilities: processImageData, createDataUrl, validateFiles, extractImageData. Essential for all image generation/editing operations.
hooks/use-image-version.tsComplex state machine hook using useReducer: manages image versioning (current/previous/original), UI state, and prompts via separate reducers. Implements edit history tracking and version management.
Requirements
- Complexity
- Intermediate
- Setup time
- ~20 minutes
- Node
- 24+
- Memory
- 512MB
Upstash Redis for rate limiting
