3 ms·

Don't know about performance numbers, but one reason for headless browsers is so that you can run your tests on cheap small headless Linux servers.

• sacheendra 9y ago
  Adding to ^. You don't need to have the Xorg stuff running to run tests.
  • Wilya 9y ago
    That's what Xvfb is for. "xvfb-run firefox" and "firefox -headless" should be functionally equivalent. But I would still be interested in performance comparison with numbers.
    • Vinnl 9y ago
      Doesn't xvfb still just run an Xserver, simply without painting? Or do headless Chrome and Firefox still require an X server running too?
      • Wilya 9y ago
        You're right, there is a difference. I meant equivalent from the point of view of the user who wants to run tests, not on the way they work internally.