reactintermediate2 hr est.

AI Image Generator with Next.js & DALL-E

Build a web app that takes a user's prompt and generates an image using OpenAI's DALL-E 3 API, then displays it on the screen.

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TechIdea Curriculum Team

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Last updated: 2026-06-05

Before You Begin

1
Next.js basics
2
React state
3
OpenAI API Key

Project Architecture

Folder Structure

app/
├── page.tsx
├── api/
│   └── generate/route.ts

Data Flow

[Next.js Client] -> [Next.js API Route] -> [OpenAI DALL-E API] -> [Image URL] -> [Client Display]

Source Code Breakdown & Implementation

Set up a new Next.js project with Tailwind CSS.

Create the API route to securely handle the OpenAI key.

Manage loading state while waiting for the image generation.

Show toast notifications if the prompt is blocked by safety filters.

Complete Solution Code

Compare your approach

Testing Checklist

• Generate an image
• Test empty input
• Test offensive input to see safety block

Common Bugs

Bug: CORS error
Fix: Always call the API from a backend route, not directly from the browser.