A URL parameter is a bit of extra info added to a web address that helps servers understand what you’re looking for. You’ll find them after a question mark in the URL, usually as key-value pairs separated by ampersands, like in `www.example.com/products?category=shoes&colour=blue`. They can affect how pages show up on search engines, so it’s important to manage them well; otherwise, you might end up with duplicate content or confuse crawlers. Using tools like canonical tags can help keep things clear and ensure users get the right content without messing up your site’s visibility online.
