playwright/docs/src/chrome-extensions-js-python.md

id	title
chrome-extensions	Chrome Extensions

:::note Extensions only work in Chrome / Chromium in non-headless mode, launched with a persistent context. :::

The following is code for getting a handle to the background page of an extension whose source is located in ./my-extension:

const { chromium } = require('playwright');

(async () => {
  const pathToExtension = require('path').join(__dirname, 'my-extension');
  const userDataDir = '/tmp/test-user-data-dir';
  const browserContext = await chromium.launchPersistentContext(userDataDir,{
    headless: false,
    args: [
      `--disable-extensions-except=${pathToExtension}`,
      `--load-extension=${pathToExtension}`
    ]
  });
  const backgroundPage = browserContext.backgroundPages()[0];
  // Test the background page as you would any other page.
  await browserContext.close();
})();

import asyncio
from playwright.async_api import async_playwright

path_to_extension = "./my-extension"
user_data_dir = "/tmp/test-user-data-dir"


async def run(playwright):
    context = await playwright.chromium.launch_persistent_context(
        user_data_dir,
        headless=False,
        args=[
            f"--disable-extensions-except={path_to_extension}",
            f"--load-extension={path_to_extension}",
        ],
    )
    background_page = context.background_pages[0]
    # Test the background page as you would any other page.
    await context.close()


async def main():
    async with async_playwright() as playwright:
        await run(playwright)


asyncio.run(main())

from playwright.sync_api import sync_playwright

path_to_extension = "./my-extension"
user_data_dir = "/tmp/test-user-data-dir"


def run(playwright):
    context = playwright.chromium.launch_persistent_context(
        user_data_dir,
        headless=False,
        args=[
            f"--disable-extensions-except={path_to_extension}",
            f"--load-extension={path_to_extension}",
        ],
    )
    background_page = context.background_pages[0]
    # Test the background page as you would any other page.
    context.close()


with sync_playwright() as playwright:
    run(playwright)