age-calculator

Age Calculator and Updater as chrome extension to override new tab page (chrome://newtab)

Chrome extension in chrome webstore

How to use this extension (locally):

Download archived file here.
Extract it to an empty folder (e.g. age-calculator).
Go to your chrome extensions (copy chrome://extension to your url field in your chrome).
Turn on developer mode on top right corner.
Click on Load unpacked button.
Navigate to the folder (e.g. age-calculator) and click Open.
Done. This extension has been installed in your chrome. Open new tab to check.