Faceted Navigation

Faceted navigation is a filtering system commonly used on e-commerce and large catalog sites that allows users to narrow results by multiple attributes simultaneously, such as size, color, price, and brand. Each combination of filters typically generates a unique URL, which can result in thousands of near-duplicate pages being exposed to search engines.

Without proper management, faceted navigation creates serious crawl budget waste and duplicate content issues. SEO practitioners address this by using canonical tags to point filter URLs back to the canonical category page, applying noindex directives to low-value filter combinations, or blocking certain parameter-based URLs in robots.txt.