The robots.txt file is a text file placed on a website to communicate with search engine robots (also known as "bots" or "crawlers"). It instructs the bots which pages or sections of the site should not be crawled or indexed. Some benefits of using robots.txt in SEO include:
Preventing unnecessary indexing: By specifying which pages should not be crawled, you can prevent search engines from indexing pages that have no SEO value or that you do not want to appear in search results.
Improving crawl efficiency: By limiting the number of pages the search engine bots crawl, you can improve the efficiency of the crawling process and reduce the load on your server.
Protecting sensitive information: By disallowing the crawling of sensitive pages, such as login pages or confidential information, you can prevent sensitive information from appearing in search results.
Note: It's important to remember that while the robots.txt file can prevent bots from crawling a page, it does not guarantee that the page will not appear in search results.