How to take a screenshot with Puppeteer?

When web scraping, we might want to collect page screenshots or peek into what our headless browsers are seeing for debugging. In Puppeteer a screenshot can be taken using the screenshot() method of page or element objects:

const puppeteer = require('puppeteer');

async function run() {
  // usual browser startup:
    const browser = await puppeteer.launch();
    const page = await browser.newPage();
    await page.goto("http://httpbin.dev/html");
    // wait for the selector appear on the page
    await page.screenshot({
      "type": "png", // can also be "jpeg" or "webp" (recommended)
      "path": "screenshot.png",  // where to save it
      "fullPage": true,  // will scroll down to capture everything if true
    });

    // alternatively we can capture just a specific element:
    const element = await page.$("p");
    await element.screenshot({"path": "just-the-paragraph.png", "type": "png"});

    browser.close();
}
 
run();

⚠ Note that when scraping dynamic web pages, screenshots could be captured before the page is fully loaded. For more see How to wait for a page to load in Puppeteer?