fps.js

const puppeteer = require('puppeteer');

(async () => {
  const browser = await puppeteer.launch({
    headless: false,
  });
  const page = await browser.newPage();
  const protocol = await page.target().createCDPSession();
  await protocol.send('Overlay.setShowFPSCounter', { show: true });
  await page.goto('https://pptr.dev');

  // Do graphical regressions here by interacting with the page
  await protocol.send('Input.synthesizeScrollGesture', {
    x: 100,
    y: 100,
    yDistance: -400,
    repeatCount: 3
  });

  await page.screenshot({
    path: 'fps.jpeg',
    type: 'jpeg',
    clip: {
        x:0,
        y:0,
        width: 370,
        height: 370
    }
  });
  await page.close();
  await browser.close();
})();