Current Google documentation states that permanent redirects are used by the indexing pipeline as a signal that the redirect target should become canonical.

Cited by documentation

Sources

• Redirects and Google Search | Google Search Central | Documentation

  Google (Search Central) · primary source · retrieved 2026-08-18

  “the indexing pipeline uses the redirect as a signal that the redirect target should be canonical” — Section "Overview of redirect types", table row "Permanent"

• How to Specify a Canonical with rel="canonical" and Other Methods | Google Search Central

  Google (Search Central) · primary source · retrieved 2026-08-18

  “A strong signal that the target of the redirect should become canonical” — Opening list of canonicalization methods, ordered by strength

• Are 301 Redirects a Google Ranking Factor? Complete Analysis

  Rankability · retrieved 2026-08-18

  “Google treats permanent redirects (301/308) as strong canonical signals” — Summary answer, first paragraph

Related claims

• SUPERSEDES_WORDINGGoogle historically stated that a 301 domain redirect signals a permanent move toward indexing the new domain, whereas a 302 indicates a temporary move and continued indexing of the old domain.Supported