Right-choose the bookmark and select “Open in a New Window”.
Open Bookmark in New Tab ExtensionThis extension is easy to install from the Add-ons for Firefox page.
when opening a bookmarked website.

![sshot-2009-09-26-[17-30-08]](https://static1.howtogeekimages.com/wordpress/wp-content/uploads/2009/09/sshot20090926173008.png)
![sshot-2009-09-26-[17-34-25]](https://static1.howtogeekimages.com/wordpress/wp-content/uploads/2009/09/sshot20090926173425.png)
![sshot-2009-09-27-[23-15-23]](https://static1.howtogeekimages.com/wordpress/wp-content/uploads/2009/09/sshot20090927231523.png)
Right-choose the bookmark and select “Open in a New Window”.
Open Bookmark in New Tab ExtensionThis extension is easy to install from the Add-ons for Firefox page.
when opening a bookmarked website.

![sshot-2009-09-26-[17-30-08]](https://static1.howtogeekimages.com/wordpress/wp-content/uploads/2009/09/sshot20090926173008.png)
![sshot-2009-09-26-[17-34-25]](https://static1.howtogeekimages.com/wordpress/wp-content/uploads/2009/09/sshot20090926173425.png)
![sshot-2009-09-27-[23-15-23]](https://static1.howtogeekimages.com/wordpress/wp-content/uploads/2009/09/sshot20090927231523.png)