Redirect-By header
type: TechArticle
description: The Redirect-By response header names the software that issued a redirect, so anyone debugging a redirect chain can see at a glance which system to fix. It is deployed today under the legacy name X-Redirect-By.
language: en
is part of: Web Specification Studio
author: Web Specification Studio
publisher: Web Specification Studio
license: https://creativecommons.org/licenses/by/4.0/
date modified: 2026-07-14T00:00:00.000Z
citation: WordPress Developer Reference — the x_redirect_by filter
  type: CreativeWork
  publisher: WordPress
citation: Yoast — Let's introduce the X-Redirect-By header
  type: CreativeWork
  publisher: Yoast
citation: RFC 6648 — Deprecating the "X-" Prefix
  type: CreativeWork
  publisher: IETF
citation: Joost de Valk — The Redirect-By HTTP header
  type: CreativeWork
  publisher: joost.blog

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item list element: Spec
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item list element: Redirect-By header
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  item: https://webspecification.com/spec/resilience/redirect-by/