: The primary format for web pages. It tells the server the client prefers standard HTML content.
: Used for general XML data. In your string, application/ appears to be a truncated version of this or another specific application type like application/json . 2. Understanding Quality Values ( q= ) accept:,text/html,application/xhtml xml,application/"
While not in your snippet, standard guides like the Mozilla Developer Network (MDN) note that these headers often use a "quality" factor to rank preferences. : text/html,application/xhtml+xml;q=0.9 : The primary format for web pages