Download Mastery Lookup

Name: Mastery Lookup
Author: Michael

By: Michael Add-on

Download Mastery Lookup (current and past versions) for Firefox

Latest Version: 1.6.0 Updated: 2 years ago

Ready to install?

Mastery Lookup is available to install from Firefox Add-ons Store and for download from this page.

View source code

Available versions

You can find the current and older versions of Mastery Lookup 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	Timestamp
1.6.0	XPI · ZIP · Source code	53.76KB	2024-02-19
1.5.0	XPI · ZIP · Source code	10.02KB	2022-11-14
1.4.1	XPI · ZIP · Source code	9.78KB	2022-11-11

2024-02-19 · 0 downloads

XPI ZIP Source code

2022-11-14 · 0 downloads

XPI ZIP Source code

2022-11-11 · 0 downloads

XPI ZIP Source code

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 Mastery Lookup ZIP file.
In Firefox browser, go to about:addons to open Add-ons Manager
Click on ⚙, Install Add-on From File
Select the Mastery Lookup ZIP file from step 1. Mastery Lookup is now installed on your browser.