It does exactly what I wanted! Although, I can't use it because it always gives focus of the window it creates and it's on top of all the other Firefox windows.

It would be 5 stars if I can minimize it, or hide it or change focus to the "main" Firefox window.

Nice tool to focus on contents

Nice, but could you please add the option to HIDE titlebar ( like #navigator-toolbox { visibility: collapse !important;}), but for the window without toolbar?
And please add this command to Bookmarks context menu also.

I'd really like a way to set this up so that certain bookmarks open this way by default. Perhaps it would need to first open the bookmark normally and then open in the window without toolbar and close the original?

cannot maximize the window

Amazing shit.

This is something what i missed from chromium. but can you make it support maximize window modes? And also, where is github page for this one? perhaps issue tab is better for these kind of questions.

Love the app. I would love to see this have a feature where I could add other add ons. I have these two add-on 'Always on top' & 'Windowed Fullscreen' That would make this the perfect way to browse.

Not effective with Waterfox Classic 56.2.12.

Maybe you need to set a strict_min_version

this would be perfect, but where do you say what the hotkey is? What is the hotkey???

Does what is advertised, but with an annoying quirk - the resulting window is always on top. There also doesn't appear to be an "exit this mode" function.

Very nice. All it needs is a hot-key combo.

I would give this a 5 star review if there was a hotkey or the ability within the options of the extension to set a hotkey. Are there any plans to do this in the future?

It is very useful addon. Thanks for your efforts. I am using it on debian linux, Firefox 60.4.0esr. After the latest update it won't work anymore. Nothing happens when i click at toolbar icon or select page context menu item.

16-01-2018: Still not working on debian linux, Firefox 60.4.0esr. How can i privide additional info to help you? May be i can look something in code inspector?
Get back to Version 1.0.2, working pretty fine.

Works great with my window manager, saves me a lot of space when having multiple windows open.

Works perfectly, thank you.

I like it but somehow i can't use the maximize button on MS Windows's window.
(edit: that's apparently a windows bug).

Would like to suggest Auto-Popup by URL (e.g.: when a Specific URL is introduced it will automatically pop the tab out - very useful for business users)