SEO begins with a robot crawling a website. During crawling, search engine robots open every page they have found a link to and fetch all the content from that page. You need to make sure robots are able to find all the pages and files on the website. As robots do find the pages and files, you also need to make sure robots can see the content on those pages and files. The resources below will help you find and fix crawling-related issues that are holding back your SEO performance.