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.
- The popup window size is maintained based on the domain. You can also right-click in the popup window and make it remember the window size for the entire URL.
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.
Learn more
For more information including full changelog, visit
https://github.com/eight04/popup-tab 
