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javascriptnode.jsautomationpuppeteeruser-agent

puppeteer wont go to chrome://version when headless mode is true

so am using puppeteer.connect method and am trying to goto chrome://version to extract the user-agent that is being used by puppeteer , so when the headless mode is false it would do fine but when trying headless mode it would give this error

 Error: net::ERR_INVALID_URL at chrome://version

Code example :

 browser = await puppeteer.connect({ browserURL, defaultViewport: null });
 page = await browser.newPage();

  await page.goto('chrome://version');
  const useragent = await page.waitForSelector('#useragent');
  const UserAgent = await page.evaluate(element => element.innerText, useragent);
Solution

  • It happens because Chrome specifically blocks local file access this way for security reasons.

    Anyway, you don't need to open the version page to get a user agent. Because there is a method for it:

    await browser.userAgent();

    It returns: <Promise<string>> Promise which resolves to the browser's original user agent.