This is useful for Firefox benchmarks (how well it handles multiple tabs via execution of a script).

  • Did you look through about:config ? – Darth Android Sep 19 '12 at 20:26
  1. Open a new tab and type into the address bar about:config?filter=dom.popup_maximum and press Enter. If you receive a warning, click the button that says "I'll be careful, I promise".
  2. Double click on the dom.popup_maximum preference and a popup will appear.
  3. Change the value to your choice (default is 20) and press OK.

More information on the preference.

Image for guidance.


Type about:config into your address bar, reassure Firefox that you'll be careful and search for dom.popup_maximum. Change the value to whatever you'd like.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.