One of the coolest recent features of the Opera web browser is its tab stacking functionality. You can use it to stack tabs on top of each other to save space on the tab bar. To create a stack of tabs in the browser simply drag and drop one on top of another on the tab bar.
You only see the title of the tab that you have dragged and dropped as the last on the tab stack. What you will also notice is a small arrow that is pointing to the right that indicates that this is a stack of tabs and not a single tab.
When you hover your mouse over the tab, you will automatically see thumbnails and titles of all websites of the stack.
You can furthermore click on the right arrow to expand all tabs so that each is displayed as an individual tab in Opera, and on the left arrow of the expanded tab listing to stack the tabs back on top of each other.
What you can't do by default is to associated a link with a tab stack directly. The link and tab right-click menu does not provide you with options to add a page that you want to open in a new tab to the tab stack. All links are automatically added at the end of the tab bar when you open them in new tabs.
Opera's AutoStack extension adds that functionality to the browser. Every new tab that you spawn from a link of a page that is part of a tab stack is automatically added to that tab stack as well. The extension is one of those small unobtrusive add-ons that can make improve your work flow in the browser. The extension is only compatible with Opera 12.00 or newer and won't stack internal Opera pages at the time of writing.
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Ghacks is a technology news blog that was founded in 2005 by Martin Brinkmann. It has since then become one of the most popular tech news sites on the Internet with five authors and regular contributions from freelance writers.