take a web screenshot using node puppeteer

screenshot.js

const puppeteer = require('puppeteer');


const site = process.argv[2];

async function getPic() {
    const browser = await puppeteer.launch({headless: false});
    const page = await browser.newPage();
    await page.goto(site, {waitUntil: 'networkidle2'});


    // Get the "viewport" of the page, as reported by the page.
    const dimensions = await page.evaluate(() => {
        return {
            width: document.documentElement.clientWidth,
            height: document.documentElement.clientHeight,
            deviceScaleFactor: window.devicePixelRatio
        };
    });


    console.log('Dimensions:', dimensions);

    await page.setViewport({width: dimensions.width, height: dimensions.height})
    await page.screenshot({path: 'v2.png'});

    await browser.close();
}

getPic();