A comprehensive guide to building SEO-friendly search and filtering pages in Next.js App Router. Covers the architectural separation between user-driven search URLs and stable SEO landing pages, using optional catch-all routes, a centralized URL builder, and a shared parsing pipeline. Key topics include: choosing path segments vs query parameters, generating consistent canonical URLs, building an index policy (index/noindex/404) from a single resolver, handling pagination edge cases, and generating sitemaps only from controlled URL inventories rather than all possible filter combinations.
Table of contents
Why Search Pages Need an SEO StrategySearch Results vs Landing PagesRouting Multiple URL VariationsChoosing Between Path Segments and Query ParametersParsing Search SegmentsBuilding URLs from a Single Source of TruthReusing the Builder EverywhereWhy Server Rendering MattersFetching Data Inside a Server ComponentGenerating Metadata from the Same FiltersCanonical URLs and Duplicate Search PagesBuilding Canonical URLsEvery Landing Page Needs Its Own Canonical URLDeciding What Should Be IndexedUnknown URLs Should Not Show Valid PagesCreating an Index PolicyA Production Version Should Return Three StatesPagination Requires Special HandlingBuilding a Sitemap for Search Landing PagesKeep the URL Inventory Under Your ControlGenerating a Sitemap in the App RouterDo Not Mix Noindex Pages with Sitemap EntriesAdding Category and City CombinationsBuilding One Shared Search PipelineA More Complete Parser ResultKeeping Metadata and Page Logic ConsistentFinal Architecture822 Impressions