We use robots.txt file to give Instructions to Search Engines and web crawlers. By Adding your Web Site Sitemap in robots.txt file will make it easier for Search Engines to Index your Web Pages. This is also Something You must do when it comes to Search Engine Optimization (SEO).
By default Wordpress adds a base name before the category name in the permalink.But Most Webmasters prefer to remove Category Base in order to have a SEO Friendly Url. So How Can We Do it? We Can Do this By Using either Wordpress Plugin or Changing the category base Value in Permalink Setting.