Filter

A filter is a tool that allows users to sort or limit content based on specific criteria. For example, an e-commerce site might allow customers to filter products by price, brand, reviews, and so on.

Filters can improve the user experience, making it easier and faster to find what they are looking for, but they can also create issues for the site in terms of pagination and URL management, because they risk generating unnecessary URL parameters that do not provide value to users and worsen SEO.