If you want to enable extensions in incognito mode on your browser, go to the Extension settings page, find the extension you want, and toggle the option that says “Allow it incognito or in Private ...
If you're using Safari's incognito mode, aka private browsing, you probably want to keep your browsing history private. However, before iOS 17, anyone with access to your unlocked iPhone could peek ...
The easiest way to turn off private browsing in Firefox is by simply closing all your private browsing windows.