HOW TO BOOKMARK ALL TABs AT ONCE

In all major browser, we can simply bookmark all opened Tabs by a single operation

In Google Chrome 

-->Right Click on any Tab

-->Click Bookmark All Tabs

or simply press Ctrl+Shift+D

In Internet Explorer

-->Click View favorites

-->Add favorites

-->Select Add current tabs to favorites

or we can do it simply by Alt+ Z and select Add current tabs tofavorites

In Mozilla Firefox

-->Right Click on any Tab

-->Click Bookmark All Tabs

or simply press Ctrl+Shift+D