This is useful for Firefox benchmarks (how well it handles multiple tabs via execution of a script).
2 Answers
- 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". - Double click on the
dom.popup_maximum
preference and a popup will appear. - Change the value to your choice (default is 20) and press OK.
More information on the preference.
.
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.
about:config
?