Puppeteer

• https://pptr.dev/

const browser = await puppeteer.launch({headless: 'new'});
const page = await browser.newPage();
await page.goto('https://developer.chrome.com/');
await page.setViewport({width: 1080, height: 1024});

await browser.close();

性能テスト

• Automating Web Perf measurement with Puppeteer
  • https://github.com/addyosmani/puppeteer-webperf

高速化

• How to speed up puppeteer?
  • https://stackoverflow.com/questions/62852481/how-to-speed-up-puppeteer

await page.goto(url, {waitUntil: 'networkidle2'})

load - consider navigation to be finished when the load event is fired.
domcontentloaded - consider navigation to be finished when the DOMContentLoaded event is fired.
networkidle0 - consider navigation to be finished when there are no more than 0 network connections for at least 500 ms.
networkidle2 - consider navigation to be finished when there are no more than 2 network connections for at least 500 ms.