Mime Type

A MIME type / (properly) media type / (aka) content type is a standardized two-part identifier for file formats and format contents transmitted on the Internet.

A media type consists of top-level type name and sub-type name, possibly ordered into trees, and optional parameters.

top-level type name / subtype name [ ; parameters ]

top-level type name / [ tree. ] subtype name [ +suffix ] [ ; parameters ]

The top-level type names are:

application, audio, example, font, image, message, model, multipart, text, video.

The sub-type name consists of a media type name or other identifying content.

application/javascript
application/json
application/x-www-form-urlencoded
application/xml
application/zip
application/pdf
audio/mpeg
audio/vorbis
multipart/form-data
text/css
text/html
text/plain
image/png
image/jpeg
image/gif