How is Google Fetch useful?

The Webmaster Tools Fetch as Google tool shows webmasters the outcomes of Googlebot's attempts to fetch their websites. The server headers and HTML displayed are helpful for identifying technical issues and side effects of hacking, but they occasionally make it difficult to double-check the response: Help

You may test how Google crawls a page on a website as well as how they visually render it on mobile and desktop devices using the Fetch & Render feature in Google Search Console. This makes it possible for you to identify and correct any potential problems. Although it is a helpful tool, there are some rules that must be followed.