Generate an image with FLUX Schnell on Replicate from Node.js

What you get

A Node script that sends a text prompt to FLUX Schnell on Replicate and writes the result to output.png.

Prerequisites

Node.js with ES modules (top-level await)
A Replicate API token

Steps

Install the client and set your token:

Shell

npm install replicate
export REPLICATE_API_TOKEN=r8_******

Create index.mjs:

JavaScript

import Replicate from "replicate";
const replicate = new Replicate();

console.log("Running the model...");
const [output] = await replicate.run(
  "black-forest-labs/flux-schnell",
  {
    input: {
      prompt: "An astronaut riding a rainbow unicorn, cinematic, dramatic",
    },
  }
);

// Save the generated image
import { writeFile } from "node:fs/promises";

await writeFile("./output.png", output);
console.log("Image saved as output.png");

Test it

Run node index.mjs. After a few seconds output.png appears in the folder. Change prompt to generate something else.