1) Go to https://chrome.google.com/webstore/detail/xpath-helper/hgimnogjllphhhkhlmebbmlgjoejdpjl?hl=en
2) Click on Add to Chrome.
3) Click on Add button.
) Once it is installed, it will display a pop up message for Succesful installation.
IMPORTANT: After installing this extension, you must reload any existing tabs or restart Chrome for the extension to work.
5) Now the icon for XPath Helper will appear on the top right most side of the Chrome browser. Just click on it to open the helper.