Download Checkmate - Cashback, Savings & Rewards.

Name: Checkmate - Cashback, Savings & Rewards.
Author: Rory Garton-Smith

By: Rory Garton-Smith shopping

Download Checkmate - Cashback, Savings & Rewards. (current and past versions) for Firefox

Latest Version: 9.6.1 Updated: 9 days ago

Ready to install?

Checkmate - Cashback, Savings & Rewards. 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 Checkmate - Cashback, Savings & Rewards. 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
9.6.1	XPI · ZIP · Source code	1.47MB	0	2026-09-02
9.3.0	XPI · ZIP · Source code	1.46MB	0	2026-08-30

2026-09-02 · 0 downloads

XPI ZIP Source code

2026-08-30 · 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 Checkmate - Cashback, Savings & Rewards. ZIP file.
In Firefox browser, go to about:addons to open Add-ons Manager
Click on ⚙, Install Add-on From File
Select the Checkmate - Cashback, Savings & Rewards. ZIP file from step 1. Checkmate - Cashback, Savings & Rewards. is now installed on your browser.