A sitemap provides information that helps Google more intelligently crawl your site. Discover how a sitemap works and determine if you need one.| Google for Developers
When a site has duplicate content, Google chooses the canonical URL. Learn more about canonical URLs and how to consolidate duplicate URLs.| Google for Developers
Google supports several sitemap formats. Follow this guide to learn about formats, how to build a sitemap, and how to submit a sitemap to Google.| Google for Developers