Search engines use crawlers, sometimes known as search engine bots or spiders, to crawl web pages on the Internet. When a search engine crawler finds a page, it stores essential information about it, like its copy, title, and meta description, and sends that information to the search engine. The search engine then indexes the web page by storing that information in its database. It will then use the pages in its database to deliver relevant websites in the search results when a user enters a query. If a search engine crawler can’t crawl your page or website, it will prevent search engines from indexing it, which means your site won’t rank in the search results.