For questions about achieving clean-url's. Clean URL's are url's that only include easily understood words and numbers, and not meaningless variables that only a programmer would understand.
Clean URLs, RESTful URLs, user-friendly URLs or SEO-friendly URLs are purely structural URLs that do not contain a query string [e.g., action=delete&id=91] and instead contain only the path of the resource (after the scheme [e.g., http] and the authority [e.g., example.org]). This is often done for aesthetic, usability, or search engine optimization (SEO) purposes.