AI Image Generator App (Next.js 15 + OpenAI)

Generate images with AI — full app with gallery

A full-stack AI image generator built with Next.js 15 and OpenAI (DALL-E 3). Generate, browse, download and reuse — with a working mock fallback so the app runs without an API key.

What's included

• Image generation — OpenAI DALL-E 3 integration
• Mock fallback — app works without an API key
• Size selection — 1024×1024 / 1024×1792 / 1792×1024
• Persistent gallery — localStorage history
• Download button — one-click save
• Prompt history — click to reuse past prompts
• Dark glassmorphism — modern premium UI

Quick Start

npm install
cp env.example .env  # add OPENAI_API_KEY
npm run dev

Stack

Next.js 15 · React 19 · OpenAI · TypeScript · Tailwind

Use cases

• AI content apps
• Marketing asset generators
• Product demos
• Internal creative tools