Firefox: Open bookmarks in new tabs

In Firefox, you can open a folder of bookmarks at a time by selecting "Open All in Tabs" option. But, then these sites be opened in the existing tabs by replacing the opened sites. If you want to open all bookmarks in a folder at a time and want your opened sites to remain opened, you can achieve that by changing a Firefox option using about:config.

The process is simple. Type "about:config" in a tab, it will show a lot of options you can play with. Search for browser.tabs.loadFolderAndReplace key and change it to false by double clicking on it (or right click>toggle).

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