kb/data/developer.mozilla.org/en-US/docs/Glossary/Entity_header-0.md

title	chunk	source	category	tags	date_saved	instance
Entity header - Glossary | MDN	1/3	https://developer.mozilla.org/en-US/docs/Glossary/Entity_header	reference	web, html, css, javascript, documentation	2026-05-05T05:30:42.338182+00:00	kb-cron

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1. Glossary
2. Entity header

Entity header

Warning: The current HTTP/1.1 specification no longer refers to entities, entity headers or entity-body. Some of the fields are now referred to as Representation header fields. An entity header is an HTTP header that describes the content of an HTTP message (i.e., metadata about the message body). Entity headers include: Content-Length, Content-Language, Content-Encoding, Content-Type, Expires, etc. Entity headers may be present in both HTTP request and response messages. In the following example, Content-Length is an entity header, while Host and User-Agent are requests headers:

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• Related glossary terms:
  • Representation header