Popup To Tab is a simple extension for the browser. You can easily turn any kind of pop-up window into a tab. Now you can also create your own tabs by merging pop-ups into them.

To do that, you have to install this extension first. 

Next, you have to be on a website that has a popup. For example, there might be an article in the right-hand sidebar that requires some action in order to read the rest of the story. You can also find an ad that wants to make you buy something. Or you might want to share an article on Facebook or Twitter.

When you click on the notification to open the popup, you have a few options:

Merge the popup into the current window. 

You can add an icon to your browser toolbar.