Why are HTTP response headers important?
HTTP headers form the basis of an internet request. Without HTTP response headers, a web page simply cannot be loaded. After all, it's important for the web browser to know what kind of file is being served, in what code and what the file size is.
HTTP headers therefore ensure greater compatibility in order for files and websites to be loaded in different environments without disruptions, and also to be loaded without any problems regardless of the encoding or character set of the website.