Representation Headers

About

A representation header (or representation metadata) is an HTTP header that describes how to interpret the data contained in the message; representation headers are not mutually exclusie with content headers¹.

Examples

The content in a particular message might be encoded for transport, the whole resource might be formatted as a particular media type such as XML, JSON, HTML or Markdown, localised to a particular written language or geographical region, and/ or compressed using a particular algorithm. The representation headers allow the underlying data to be extracted and understood; the underlying resource is semantically the same in each case, but its representation is different.

List

• Content-Length header
• Content-Range header
• Content-Type header
• Content-Encoding
• Content-Location header
• Content-Language header
• Validators used in conditional requests, such as:
  • Last-Modified header
  • ETag header

Anki

Links

• HTTP headers
• HTTP request headers
• HTTP Response headers

References