SmartHint is a free Chrome add-on developed by marlon.korzune. It falls under the category of Browsers and is specifically categorized as an Add-ons & Tools subcategory.

The main function of SmartHint is to check if the SmartHint script is installed on a webpage. It allows users to verify the type of page and the positions that will be used for recommendations.

With SmartHint, users can easily analyze webpages and ensure that the necessary script is properly installed. This can be particularly useful for website owners and developers who rely on SmartHint's recommendation system.

Overall, SmartHint is a handy Chrome add-on that provides a simple and efficient way to verify the installation of the SmartHint script and ensure accurate recommendations on webpages.