About this extension

Features

Convert a tab into a popup window.
Convert the popup window back to a tab, and insert back to original window.
The tab is actually "moved" between the normal window and the popup window, so you don't have to reload the page.

Usage

Right-click the tab bar, select "Popup this tab". (Firefox 53+)
Right-click on the page, select "Popup this tab". (Firefox < 53)
In popup window, right-click on the page, select "Merge popup".
From Firefox >= 66, you can set a hotkey that will popup/merge the current tab.
https://i.imgur.com/jBsrY9O.png

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