Simple local HTML ---> PDF Example using Node.js / Puppeteer.js

nodepdfmaker.js

//Full PDF options available at: https://pptr.dev/api/puppeteer.pdfoptions

const puppeteer = require('puppeteer');

(async () => {

  // Create a browser instance
  const browser = await puppeteer.launch();

  // Create a new page
  const page = await browser.newPage();

  // Website URL to export as pdf
  const website_url = `file://${__dirname}/hello.html`; 

  // Open URL in current page
  await page.goto(website_url, { waitUntil: 'networkidle0' }); 

  //To reflect CSS used for screens instead of print
  await page.emulateMediaType('screen');

// Downlaod the PDF
  const pdf = await page.pdf({
    path: 'result.pdf',
    //margin: { top: '100px', right: '50px', bottom: '100px', left: '50px' },
    printBackground: true,
    width: '8.5 in',
    height: '8.5 in'
  });

  // Close the browser instance
  await browser.close();

})();