Multiple Windows, Single Session

Multiple Windows, Single Session

Turns out pressing Ctrl+Q or closing from the menu does this (and works better). (Relaunch closed windows on next startup. Experimental. Addon button closes windows for good.)

What is Multiple Windows, Single Session?

Multiple Windows, Single Session is a Firefox add-on that allows you to close windows and have them restart when Firefox reboots. It also provides an add-on button for permanently closing windows. The add-on is experimental and written in purescript.

Stats date:
Users: 10 ▲ 2
Rating: 4.00 (1)
Version: 1.1 (Last updated: 2018-09-04)
Creation date: 2018-09-04
Weekly download count: 2
Firefox on Android: Yes
Manifest version: 2
  • tabs
  • sessions
  • storage
Size: 94.08K
Email: Click to see
URLs: Website
Risk impact: Moderate risk impact
Risk likelihood: Low risk likelihood

Other platforms

Not available on Chrome
Not available on Edge

ChromeStats Rank


I DO recommend closing your MAIN window LAST. Especially so, if you're using something like Tree Style Tabs.

What it does Basically, you close a window with the X and this addon will restart that window when Firefox reboots. If you want to permanently close a window, then use the addon button.

Update: Turns out pressing Ctrl+Q or closing from the menu does this (and works better).

It's written in purescript, which is honestly pretty terrible for this.(hindsight)

Contribs welcome:

User reviews
It really needs 20k lines of script to do it? You wrote it? I was just impressed examining the source code
by Caio, 2020-06-22
View all user reviews
Risk impact

Multiple Windows, Single Session may not be safe to use and it requires some risky permissions. Exercise caution when installing this add-on. Review carefully before installing.

Risk likelihood

Multiple Windows, Single Session has earned a fairly good reputation and likely can be trusted.

Subscribe to the premium plan to see more risk analysis details