url-canonicalization

Middleware-based canonical redirects intercept non-canonical requests and forward them to the standard URL path. This Next.js middleware approach preserves essential query parameters while stripping dynamic variants that cause duplicate content issues.

Canonical URL generation for date and category segments uses dedicated helpers to enforce consistent path structures across listing pages. This prevents dynamic rendering of invalid date or category combinations by redirecting them to their canonical forms.

To manage query parameters without breaking functionality, the canonicalization workflow preserves essential variables like pagination cursors while discarding dynamic or tracking parameters. This ensures the canonical URL remains SEO-safe without losing necessary page state.

Canonical redirects reduce dynamic rendering costs by funneling duplicate URL variants to a single static canonical path. By limiting the number of unique URLs that require on-demand generation, the middleware prevents unnecessary server compute usage on listing pages.

Next.js middleware is required to implement proxy-based canonical redirects because it intercepts requests at the edge before full application routing. Configuring the middleware in proxy.ts allows the canonicalization rules to execute redirects early in the request lifecycle.

SEO headers for canonical URLs are added by generating standard link tags and injecting them into the Next.js page metadata. The Skill includes SEO header generation in its workflow to reinforce the canonical signals sent by the middleware-based redirects.