Download I May Subscribe - YouTube™ Subscription Manager

Name: I May Subscribe - YouTube™ Subscription Manager
Author: Anant Kumar Pathak

By: Anant Kumar Pathak

Download I May Subscribe - YouTube™ Subscription Manager (current and past versions) for Firefox

Latest Version: 2.2.2 Updated: 20 days ago

Ready to install?

I May Subscribe - YouTube™ Subscription Manager is available to install from Firefox Add-ons Store and for download from this page.

View source code

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Available versions

You can find the current and older versions of I May Subscribe - YouTube™ Subscription Manager 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
2.2.2	XPI · ZIP · Source code	66.91KB	2026-05-31
2.2.1	XPI · ZIP · Source code	36.83KB	2026-05-29
2.2	XPI · ZIP · Source code	36.59KB	2026-05-26

2026-05-31 · 0 downloads

XPI ZIP Source code

2026-05-29 · 0 downloads

XPI ZIP Source code

2026-05-26 · 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 I May Subscribe - YouTube™ Subscription Manager ZIP file.
In Firefox browser, go to about:addons to open Add-ons Manager
Click on ⚙, Install Add-on From File
Select the I May Subscribe - YouTube™ Subscription Manager ZIP file from step 1. I May Subscribe - YouTube™ Subscription Manager is now installed on your browser.