Selecting your code replies is important.

When rating a website, search engines take HTTP status codes into account. A website with the same content and an HTTP status code in the 200s will rank better than a website with an HTTP status code in the 500s or greater.

Google examines the first 512 bytes of a website to assess load time in order to provide a more detailed response.

A page is deemed to be of excellent quality and receives a boost if the first 512 bytes can be returned in less than one second.

The difference between being ranked #1 or #5 for a search query may be made by giving that boost.

An HTTP endpoint that returns 200 OK signifies “complete success” and “here is your data.” Data should be returned in the response payload, which is now commonly JSON for REST endpoints or HTML5 for web page endpoints.

Therefore, search engines take into account HTTP status codes when determining a page’s ranking. i.e., a site having an HTTP 200 success page is more likely to be ranked highly. The request was successful if the response code was HTTP 200 OK success status. The HTTP request method determines what success means: GET: The message body contains the resource that has been fetched and sent.

A server responds to a request from a client by returning a status code. There are five groups or categories used to categorize all HTTP response status codes. The status code’s first number identifies the answer class, whereas the final two digits serve no categorization or classification function.