The 'Plant trees with Google Ecosia' add-on for Firefox is a subscription-based personalization tool designed to promote environmental sustainability. This innovative extension automatically appends a '#g' tag to every search conducted on Ecosia, effectively transforming standard queries into contributions towards reforestation. Users can seamlessly integrate this functionality into their browsing experience, ensuring that each search has a positive impact on the planet.

In addition to the automatic tagging feature, the add-on includes a search counter that allows users to track their contributions to tree planting. This feature not only motivates users to engage more with the platform but also provides a tangible measure of their environmental impact. By utilizing the Ecosia Search Enhancer, users can effortlessly support reforestation efforts, making it a valuable tool for eco-conscious individuals.