Chrome Flags Reference

--show-composited-layer-borders

What does --show-composited-layer-borders do?

Renders a border around compositor layers to help debug and study layer compositing.

Usage

chrome --show-composited-layer-borders

const browser = await puppeteer.launch({
  args: ['--show-composited-layer-borders']
});

const browser = await chromium.launch({
  args: ['--show-composited-layer-borders']
});

from selenium import webdriver

options = webdriver.ChromeOptions()
options.add_argument('--show-composited-layer-borders')

driver = webdriver.Chrome(options=options)