List of HTTP header fields

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Content-type

The MIME type of the body of the request (used with POST and PUT requests)

content-type:application/x-www-form-urlencoded

Common MIME TypeType application

application/json: JavaScript Object Notation JSON;

application/pdf: Portable Document Format, PDF have been in use for Document exchange on the Internet since 1993;

application/xml: XML files;

Type text

text/css: cascading Style Sheets;

text/csv: comma-separated values;

text/html: HTML;

text/javascript(Obsolete): JavaScript;

text/xml: Extensible Markup Language;

List of common media subtype prefixes

application/vnd.ms-excel: Microsoft Excel files

List of HTTP header fields