const puppeteer = require('puppeteer');
(async() => {
const browser = await puppeteer.launch();
const page = await browser.newPage();
await page.goto('file://c:/Node/projects/public_html/pdf-print/your-pdf.html');
await page.pdf({
  path: 'test.pdf',
  format: 'A4',
  margin: {
        top: "20px",
        left: "20px",
        right: "20px",
        bottom: "20px"
  }
});
await browser.close();
})();