Users were allowed to set the preference to False to restore the previous behavior and open web page source code in a new window rather than a new tab.īut later when Firefox 60.0 version was released, Mozilla team removed the view_source.tab preference and users could no longer change this behavior. Mozilla team also added a hidden preference or flag view_source.tab to Firefox’s advanced configuration page about:config in Firefox 42.0 version to modify or customize this behavior. This functionality was added long time back to Firefox 42.0 version and since then all Firefox versions always open web page source in a new tab. Firefox opens the webpage source code in a new tab in the same window.
You can also use Ctrl+U hotkey to open webpage source code. If you open a website or webpage in Mozilla Firefox web browser and you decide to view page source, you can right-click on the web page and select “ View Page Source” option from the context menu.
