Put Unused Tabs on Hold in Firefox

Five of the six websites are literally on hold and display as about:blank.

You may also add your favorite websites as exclusions.

Newly opened tabs can now be placed on hold until you are ready for them.

Need to place a currently accessed tab on hold?

Use the tab context menu to unload the page.

You will notice the difference in memory usage when you put a lot of intensive pages on hold.