Opening OnlyMonster in Two Separate Windows

Overview

Some users manage multiple agencies and need to work in two OnlyMonster instances at the same time. This guide shows how to open two independent windows of the OnlyMonster Browser on the same device, each logged into a separate account, making it easy to switch between agencies without logging in and out.

For Windows Users

Step-by-Step Guide

Follow these steps to create a second, independent instance of OnlyMonster Browser:

1. Locate the OnlyMonster Browser shortcut on your desktop.

2. Right-click the shortcut → Copy, then right-click an empty area on your desktop → Paste to create a duplicate.

3. Configure the new shortcut:

• Right-click on the newly created shortcut and select Properties.

• In the Target field, delete the existing text and paste the following path: "C:\Program Files\OnlyMonsterBrowser\OnlyMonsterBrowser.exe" --user-data-dir="C:\Profiles\OnlyMonsterBrowser\account1"

• Click Apply, then OK to save.

What to Expect

After completing the setup:

• Opening this shortcut will launch a completely separate browser window, isolated from your original session.

• On the first launch, you'll need to log in manually to your second account.

• Future launches will open the browser automatically logged in, using the saved credentials for that account.

Important Notes & Troubleshooting

Unique profile paths: Make sure each profile has a unique user-data-dir path. For example:

• account1 for the first additional profile

• account2 for another profile, and so on

System performance: Running two or more instances may increase memory and CPU usage. Only open multiple accounts if you're confident your device can handle the additional load.

Restoring the original shortcut: If you accidentally delete the original shortcut, you can recreate it by following steps 3-4 above and using this path:

"C:\Program Files\OnlyMonsterBrowser\OnlyMonsterBrowser.exe"

Shortcut stops working: If your second shortcut stops functioning, delete it and repeat the setup steps from the beginning.

For macOS Users

Step-by-Step Guide

Step 1. Open Terminal.

You can find it via Launchpad → Other → Terminal, or by searching “Terminal” in Spotlight (⌘ + Space).

Step 2. Run the first instance. Paste the following command into Terminal and press Enter:

"/Applications/OnlyMonsterBrowser.app/Contents/MacOS/OnlyMonsterBrowser" \
--user-data-dir="$HOME/OnlyMonsterProfile1" --profile-directory="Profile 1"

Step 3. Run additional instances. Open a new Terminal tab and use a similar command with a different profile name:

"/Applications/OnlyMonsterBrowser.app/Contents/MacOS/OnlyMonsterBrowser" \
--user-data-dir="$HOME/OnlyMonsterProfile2" --profile-directory="Profile 2"

You can repeat this process for as many independent windows as you need (Profile 3, Profile 4, etc.).

Important Notes & Troubleshooting

Important: Do not close the Terminal window after launching OnlyMonster, or the browser will close.

• Each profile creates a separate, independent browser environment.

• Use unique folder and profile names for each instance. (e.g., OnlyMonsterProfile1, OnlyMonsterProfile2).

• The first time you open a new profile, you’ll need to log in manually. Credentials will be saved for next time.

• Like on Windows, multiple instances may use more system resources (RAM/CPU).