can be used by a user agent to give information about the presence or absence of certain features in the feature set of the current request.
Quick facts
Description
can be used by a user agent to give information about the presence or absence of certain features in the feature set of the current request.
Syntax
Accept-Features: <value>
Frequently asked questions
can be used by a user agent to give information about the presence or absence of certain features in the feature set of the current request.
It is classified as a request header and can appear in requests or responses depending on context.
Sources & standards
Updated 2026-09-13
about this tool
This page provides original, human-reviewed information about HTTP headers such as Accept-Features, the HTTP Header Reference and related concepts. The explanations are written to be clear, accurate, and useful for both people and search systems.
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