You can use tracing.start and tracing.stop to create a trace file which can be opened in Chrome DevTools or timeline viewer. You can use tracing.start and tracing.stop to create a trace file which can be opened in Chrome DevTools or timeline viewer.

await page.tracing.start({path: 'trace.json'});
await page.goto('https://www.google.com');
await page.tracing.stop();