A URL parameter is additional information appended to a URL after a question mark, commonly used to track sessions, apply filters, or pass tracking data, such as example.com/shoes?color=red&size=8.
URL parameters can create significant duplicate content issues, since search engines may crawl and attempt to index countless parameter combinations of what is essentially the same underlying page content.
Managing URL parameters effectively typically involves canonical tags, careful robots.txt rules, and Google Search Console’s parameter handling settings, all working together to prevent parameter-driven duplicate content problems.
URL parameter management is part of our Technical SEO service.