How to Bookmark Multiple Tabs Together in Firefox

Bookmarking has become so popular nowdays. But bookmarking each page one by one that we like is sometimes difficult. I'm lazy in doing this. May be you will be also feeling the same.
To bookmark all tabs simultaneously in Firefox:
1. In Firefox, go to Bookmarks >> Bookmark all Tabs....2. A small dialog box will prompt you to save the bookmarks. Click Ok.
Alternatively, you can use the shortcut keys Ctrl + Shift + D for the same.