Chrome Flags Reference

Chrome command line switches and startup flags for automation, headless mode, and debugging.

--diagnostics-format

What does --diagnostics-format do?

Sets the output format for diagnostic modes enabled by diagnostics flag.

Usage

CLILaunch Chrome with --diagnostics-format using CLI

chrome --diagnostics-format

PuppeteerLaunch Chrome with --diagnostics-format using Puppeteer

const browser = await puppeteer.launch({
  args: ['--diagnostics-format']
});

PlaywrightLaunch Chrome with --diagnostics-format using Playwright

const browser = await chromium.launch({
  args: ['--diagnostics-format']
});

SeleniumLaunch Chrome with --diagnostics-format using Selenium

from selenium import webdriver

options = webdriver.ChromeOptions()
options.add_argument('--diagnostics-format')

driver = webdriver.Chrome(options=options)