Countdown Timer

Counts down until a specified date and time of your choice.

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Countdown Timer is available to install from Firefox Browser Add-ons and for download from this page. It has 207 active users The latest version is 2.0.1, and it was published 13 days ago.

All available versions

You can find the current and older versions of Countdown Timer here. You can download the archived versions or inspect their source codes.

As a free user, you can only download the latest version.

How to install Countdown Timer from an XPI file

1. Simply drag-and-drop the XPI into Firefox to install the add-on.

How to install Countdown Timer from a ZIP file

1. Download the Countdown Timer ZIP file
2. In Firefox browser, go to about:addons to open Add-ons Manager
3. Click on , then select Install Add-on From File
4. Select the Countdown Timer ZIP file from step 1. Countdown Timer is now installed on your browser.