HTTP field: Sec-Fetch-Mode
Sec-Fetch-Mode is a registered field in the IANA HTTP Field Name Registry. Structured Field type: Item.
HTTP fields are message metadata; their meaning depends on direction, combination rules, and the HTTP version carrying them. Use Sec-Fetch-Mode only according to its defining specification. Defining reference: https://www.w3.org/TR/fetch-metadata/#sec-fetch-mode-header.
Registry-backed field entry. The field is currently marked registered by IANA. Structured Field type: Item. Defining reference: https://www.w3.org/TR/fetch-metadata/#sec-fetch-mode-header.
Check whether the field is end-to-end or hop-by-hop, whether it varies a cache response, and whether it carries security-sensitive data before forwarding or logging it.
Check the linked specification for its direction, combination rules, caching behavior, and security considerations before generating or trusting it.
IANA registry: http-fields/field-names · structured type: Item
Registry reference: https://www.w3.org/TR/fetch-metadata/#sec-fetch-mode-header