How to use multiple compartmentalized Firefox instances simultaneously using profiles

Guide

Step 1: create Firefox profile

/Applications/Firefox.app/Contents/MacOS/firefox-bin -p

Step 2: open “Script Editor” and paste following snippet

Replace work with profile name from step 1.

do shell script "nohup /Applications/Firefox.app/Contents/MacOS/firefox-bin -p \"work\" --no-remote > /dev/null 2>&1 &"

Step 3: export script as application

Click “File”, then “Export…”, set “Export As” filename to “Firefox work” (or any other filename), select “Applications” folder (in “Favorites”), select “Application” file format and click “Save”.

Step 4: set Firefox app environment variable

Replace Firefox work with filename from step 3.

FIREFOX_APP="Firefox work.app"

Step 5: configure app as agent and set icon

defaults write "/Applications/$FIREFOX_APP/Contents/Info.plist" LSUIElement -bool yes
cp "/Applications/Firefox.app/Contents/Resources/firefox.icns" "/Applications/$FIREFOX_APP/Contents/Resources/applet.icns"
/System/Library/Frameworks/CoreServices.framework/Frameworks/LaunchServices.framework/Support/lsregister -f "/Applications/$FIREFOX_APP"

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