Urlz is a Firefox extension designed to enhance Google search results by providing additional relevant content directly related to the user's queries. This subscription-based tool offers extra results that are distinguishable by their green-colored links and section titles. Notably, these results are not sourced from Google, ensuring that users receive a broader spectrum of information pertinent to their searches. The extension is specifically tailored for French-speaking users in France and Belgium, making it a valuable resource for enhancing local search experiences.

The functionality of Urlz is straightforward; if additional relevant results are available for a given search, they will appear alongside the standard Google results. However, if there are no pertinent additional results, the extension will not display anything extra. Users can easily remove the additional results by uninstalling the extension if they choose to do so. It's important to note that some of the additional results may be sponsored, which is an aspect to consider while using the tool.