How to install browser extensions in Multilogin 6

Written by Yelena V ( Updated on March 6th, 2025 )

Updated on March 6th, 2025

Who can use this feature?

👨‍💻 Account owner and team members with "Launch, edit, create" role
💰 Available on all plans

There are two ways to install a browser extension or a plugin into Multilogin browser profiles. This article explains how to do it.

Enable "Extension storage" in the "Advanced" → "Storage options" section of your profile settings to avoid browser extension data loss on profile restart.

Browser interface installation

This method is the same as installing extensions in regular browsers.

Start your browser profile
Visit Chrome web store if you use Mimic or Firefox browser add-ons page if you use Stealthfox
Choose your extension and click "Add to Chrome" or "Add to Firefox"
You will see the installed extension in the top right corner of the browser profile window

Browser settings installation

With this method, you can preload any browser extensions or plugins into Multilogin profiles, including custom ones.

These steps need to be completed on every device where you plan to use Multilogin with browser extensions or plugins.

Step 1: download extension

CRX for Mimic

Visit Chrome web store
Choose your extension and copy its link from the address bar at the top
Visit CRX extractor and click "Start for free"
Paste the link you've copied from Chrome web store and click "Download"
A CRX file will be downloaded to your computer

XPI for Stealthfox

Visit the Firefox browser add-ons page
Choose your extension and right-click the "Add to Firefox" button, then choose "Save Link As"
An XPI file will be downloaded to your computer

Step 2: add extension file to profile

Copy the CRX or XPI extension file to the "custom-extensions" folder
1. Windows: C:\Users\%username%\.multiloginapp.com\custom-extensions
2. macOS: open Finder and press Cmd + Shift + H to open a user folder, then press Cmd + Shift + . (period) to show hidden files. Go to the ".multiloginapp.com" → "custom-extensions" folder
3. Linux: /Users/%username%/.multiloginapp.com/custom-extensions
Restart Multilogin
Go to the settings of your browser profile or create a new one
Select "Advanced" → "Extensions" and enable the "Pre-load custom extensions" feature
Click "Select", choose your extension and click "Save"
Click "Create profile" or "Update profile"
Start your profile, and you will see the extension in the top right corner of the browser profile window

plug-ins browser add-ons crx xpi add an extension install extension extension installation

How to use Multilogin 6

Contact Us