How to Create Multiple Firefox Profiles (2026 Guide)

Q: Why Use Multiple Firefox Profiles?

Separate work and personal browsing — different bookmarks, passwords, and extensions Web development testing — test with different extensions, settings, and cookie states Multiple account management — log into the same site with different accounts simultaneously Clean testing environment — a fresh profile with no extensions or cached data Shared computers — each user gets their own profile without interference

By Jaspal September 22, 2011 Updated: April 17, 2026

Firefox profiles let you run completely separate browser instances — each with its own bookmarks, extensions, passwords, cookies, and settings. This is essential for developers testing in different environments, people who separate work and personal browsing, or anyone managing multiple accounts on the same websites.

Why Use Multiple Firefox Profiles?

Separate work and personal browsing — different bookmarks, passwords, and extensions
Web development testing — test with different extensions, settings, and cookie states
Multiple account management — log into the same site with different accounts simultaneously
Clean testing environment — a fresh profile with no extensions or cached data
Shared computers — each user gets their own profile without interference

How to Create a New Firefox Profile

Method 1: Using about:profiles (Easiest)

Type about:profiles in the Firefox address bar and press Enter
Click "Create a New Profile"
Click Next in the wizard
Enter a name for the profile (e.g., "Work", "Development", "Personal")
Click Finish
Your new profile appears in the list — click "Launch profile in new browser" to open it

Method 2: Using Profile Manager (Command Line)

Close Firefox completely, then run:

Windows: firefox.exe -P (from the Firefox install directory)
Mac: /Applications/Firefox.app/Contents/MacOS/firefox -P
Linux: firefox -P

The Profile Manager window opens. Click "Create Profile", name it, and click "Start Firefox".

Method 3: Run Multiple Profiles Simultaneously

To run two profiles at the same time, use the --no-remote flag:

Windows: firefox.exe -P "Work" --no-remote
Mac: /Applications/Firefox.app/Contents/MacOS/firefox -P "Work" --no-remote

This launches a separate Firefox window that operates independently from your default profile.

Managing Profiles

Action	How
Switch profiles	about:profiles → "Set as default profile" → Restart Firefox
Delete a profile	about:profiles → "Remove" → choose "Delete Files" or "Don't Delete"
Rename a profile	about:profiles → "Rename"
Find profile folder	about:profiles → "Open Folder" next to Root Directory

Pro Tips

Create desktop shortcuts for each profile using firefox -P "ProfileName" --no-remote
Use different themes per profile so you can visually distinguish them at a glance
Sync selectively — you can sign into Firefox Sync on some profiles and not others
Container tabs (Firefox Multi-Account Containers extension) offer a lighter alternative if you just need to isolate cookies for a few sites

For more browser and productivity tips, check our guides to the best Mac apps and VPN services for private browsing.

Frequently Asked Questions

Can I run multiple Firefox profiles at the same time?

Yes. Use the --no-remote flag when launching Firefox with a specific profile. For example: firefox -P "Work" --no-remote. This opens a separate Firefox instance that runs independently alongside your default profile.

Are Firefox profiles the same as Container Tabs?

No. Profiles are completely separate Firefox instances with their own bookmarks, extensions, settings, and history. Container Tabs (via the Multi-Account Containers extension) isolate cookies within a single profile. Use profiles for full separation, containers for lighter cookie isolation.