Render text using Canvas in Node.js environment

render.js

const Canvas = require('canvas');
const fs = require('fs');

const canvas = new Canvas(640, 480); // creates 6400px * 480px canvas
const ctx = canvas.getContext('2d'); // get 2d context

// Fill background
ctx.fillStyle = "rgb(255, 255, 255)"
ctx.fillRect(0, 0, canvas.width, canvas.height);

// Draw Text
ctx.font = '72px "Apple SD Gothic Neo"'; // setup font
ctx.fillStyle = "#333";
ctx.rotate(0.2); // rotate text by (90deg * 0.1)
ctx.fillText('안녕하세요!', 200, 200); // write text at (50px, 100px) position

// Write to file
const bufImage = canvas.toBuffer(); // get buffer instance which contains image data, image format is PNG by default
fs.writeFileSync('rendered.png', bufImage);