🎨Generating Images with DALL·E and Node.js

We’ve already built text-based AI apps in Day 1 & 2.
Now it’s time to let AI create images for us, using OpenAI’s DALL·E API and Node.js.

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🎯 What We’re Building

A Node.js script that:

• Accepts a text prompt

• Sends it to DALL·E

• Saves the generated image to your local machine

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🛠 Setup

Install dependencies:

npm install openai dotenv axios

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💻 Code – image-gen.js

const { Configuration, OpenAIApi } = require("openai");
const axios = require("axios");
const fs = require("fs");
require("dotenv").config();

const configuration = new Configuration({
  apiKey: process.env.OPENAI_API_KEY,
});
const openai = new OpenAIApi(configuration);

async function generateImage(prompt) {
  try {
    const response = await openai.createImage({
      prompt,
      n: 1,
      size: "1024x1024",
    });

    const imageUrl = response.data.data[0].url;
    console.log("🖼 Image URL:", imageUrl);

    // Save image locally
    const img = await axios.get(imageUrl, { responseType: "arraybuffer" });
    fs.writeFileSync("generated.png", img.data);
    console.log("✅ Image saved as generated.png");
  } catch (error) {
    console.error("❌ Error:", error.message);
  }
}

generateImage("A cyberpunk city skyline at night in neon colors");

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🧪 How to Run

node image-gen.js

This will:

1. Send your prompt to DALL·E

2. Print the image URL

3. Save it as generated.png locally

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🔍 What You Learned Today

✅ How to generate images with OpenAI’s DALL-E API
✅ How to download files from a URL with axios
✅ How to save binary data to disk with fs

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