Media Types

This is the IANA registry of application media types, an alphabetical index of MIME types used under the "application/" top-level type. Each entry pairs a media type name with the organization or RFC that defines it, and often a named contact person. It spans hundreds of entries, from long-standing standards like application/json (RFC 8259) and application/pdf (RFC 8118) to niche vendor types such as application/vnd.ms-excel and application/vnd.openxmlformats-officedocument.wordprocessingml.document.

The list is a reference tool for developers, standards bodies, and software vendors who need to register, look up, or verify the correct MIME type for a file format or protocol payload. Many entries cite IETF RFCs and standards groups like 3GPP, W3C, OASIS, and HL7.