PKBR is a free Chrome add-on developed by MZ. It falls under the category of Browsers and specifically, Add-ons & Tools. This handy tool is designed to help users check the control digits of a bank account number.

With PKBR, users can easily verify if a bank account number is valid. This can be particularly useful when dealing with financial transactions or verifying the authenticity of an account. The add-on provides a simple and straightforward way to perform this check, saving users time and effort.

PKBR is a reliable and efficient tool for anyone who needs to validate bank account numbers. It is easy to use and provides accurate results, giving users peace of mind when it comes to verifying the validity of bank account information.