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fix(seo): use 308 (permanentRedirect) for canonical chain URLs #757

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Merged
Flotapponnier merged 1 commit into from
Jun 26, 2026
Merged

fix(seo): use 308 (permanentRedirect) for canonical chain URLs #757

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7 changes: 5 additions & 2 deletions src/app/benchmarks/[slug]/[chain]/page.tsx
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Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
import type { Metadata } from "next";
import { notFound, redirect } from "next/navigation";
import { notFound, permanentRedirect } from "next/navigation";
import Link from "next/link";
import { ArrowLeft, ArrowUpRight } from "lucide-react";
import { getBenchmark } from "@/data/benchmarks";
Expand Down Expand Up @@ -333,7 +333,10 @@ export default async function BenchmarkChainPage({
// and Ahrefs flags the lowercase variants as orphans (parent links use
// the YAML's uppercase value).
const canon = canonicalChainSlug(chain);
if (canon !== chain) redirect(`/benchmarks/${slug}/${canon}`);
// permanentRedirect emits a 308 so Google consolidates rank signal on
// the canonical lowercase URL. redirect() defaults to 307 (temporary)
// which leaves the source URL in the index competing with the canonical.
if (canon !== chain) permanentRedirect(`/benchmarks/${slug}/${canon}`);
const data = await loadChainPage(slug, chain);
if (!data) notFound();
const { benchmark, explainer } = data;
Expand Down
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