go to settings>general and see "tabs" settings...

Hi Andrew, is it a regular tab or a pinned tab? Pinned tabs have a special behavior to stay on the site you pinned and not change to other sites in that tab. If you click a link to another site, it will always need to open in a new tab. (Ref. [[Pinned Tabs - keep favorite websites open and just a click away]]) '''For regular tabs:''' There are two ways that a page can set up links to open in a separate window or tab: (A) Add a '''target="_blank"''' attribute to a regular link (B) Override standard links behavior using the '''window.open()''' script function ''I have a demo/test page with examples here:'' https://www.jeffersonscher.com/res/popit.html If this is only a problem on a specific site, there might be a site setting to resolve it (like on search engine results pages), or there might be an add-on to modify the links in the page just for your selected site(s). If you need a universal approach for all sites: '''''Global Targeted Link Settings''''' Firefox has an obscure method to force targeted links to stay in the same tab, which then requires you to manually direct links to new windows/tabs when needed. That would involve either right-click context menu options or Ctrl+click (new tab), Middle-click (new tab), or Shift+click (new window). Here's how: (1) In a new tab, type or paste '''about:config''' in the address bar and press Enter/Return. Click the button accepting the risk. ''More info on about:config:'' [[Configuration Editor for Firefox]]. ''The moderators would like us to remind you that changes made through this back door aren't fully supported and aren't guaranteed to continue working in the future.'' (2) In the search box in the page, type or paste '''neww''' and pause while the list is filtered - Firefox should list at least 4 preferences (please ignore the bar at the bottom with Boolean Number String) (3) Double-click the '''browser.link.open_newwindow''' preference to display an editing field, and change the value to '''1''' then press Enter or click the blue check mark button to save the change. These are the valid values for this this preference: * 3 = divert new window to new tab instead * 2 = allow new window * 1 = force into current tab (4) Double-click the '''browser.link.open_newwindow..override.external''' preference to display an editing field, and change the value to '''3''' then press Enter or click the blue check mark button to save the change. These are the valid values for this this preference: * -1 = follow browser.link.open_newwindow (with 1 this replaces the active tab) * 3 = new tab in the active window * 2 = new window * 1 = replace active tab in the active window What do you think?