Resource - (Mime|Media) Type

The term Internet media type refers to the type of a resource

A string is a valid MIME type with no parameters if it matches the media-type rule defined in section 3.1.1.1 “Media Types” of RFC 7231, but does not contain any “;” (U+003B) characters. In other words, if it consists only of a type and subtype, with no MIME Type parameters.

A user agent must not consider the types text/plain and application/octet-stream as having a registered plugin.

See the registry

For a full list, see the registry

Example:

audio/mpeg
image/gif
image/jpeg
text/css
text/html
text/javascript
video/mpeg
video/quicktime

• text/html: HTML document

The term XML MIME type is used to refer to the MIME types:

• text/xml,
• application/xml,
• and any MIME type whose subtype ends with the four characters “+xml”.

RFC3023 - XML Media Types

Media Type - x-www-form-urlencoded

You can detect it:

• by reading the file extension (ie txt, csv, …)
• by Content-Type Sniffing
• or by parsing the content
• or via its magic number

Java: probeContentType

• Rfc2045 - Multipurpose Internet Mail Extensions: (MIME) Part One: Format of Internet Message Bodies
• Rfc2046 - Multipurpose Internet Mail Extensions: (MIME) Part Two: Media Types