Download User-Agent Switcher and Simulator (current and past versions) for Firefox
Latest Version:
1.3 Updated:
a year ago Removed
Ready to install?
User-Agent Switcher and Simulator is available for download. Be careful when installing it.
234
Daily users
11 ratings
6
Total downloads
Available versions
You can find the current and older versions of User-Agent Switcher and Simulator here. You can download the archived versions or inspect their source codes.
As a free user, you can download up to 3 latest versions.
Upgrade to download older versions
| Version | Download | Size | Download count | Timestamp |
|---|---|---|---|---|
| 1.3 | XPI · ZIP · Source code | 76.21KB | 5 | 2025-08-14 |
| 1.2 | XPI · ZIP · Source code | 87.67KB | 1 | 2025-04-10 |
| 1.1 | XPI · ZIP · Source code | 87.58KB | 0 | 2025-03-24 |
Install XPI file
An XPI file, short for "XPInstall," is a compressed file format used primarily by Mozilla applications, like Firefox and Thunderbird, to distribute and install add-ons or extensions. These files are similar in function to CRX files for Chrome but cater to the Mozilla ecosystem.
- Simply drag-and-drop the XPI into Firefox to install the add-on.
Install ZIP file
- Download the User-Agent Switcher and Simulator ZIP file.
- In Firefox browser, go to
about:addonsto open Add-ons Manager - Click on ⚙, Install Add-on From File

- Select the User-Agent Switcher and Simulator ZIP file from step 1. User-Agent Switcher and Simulator is now installed on your browser.
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