What is Parameter handling?
Parameter handling manages query-string URL variants, such as filters, sorting, sessions, or tracking codes. These parameters may be necessary for functionality, but unrestricted combinations can create duplicate or near-duplicate crawl paths and ambiguous page ownership. The correct treatment depends on what each parameter changes for the user.
Why Parameter handling matters
Product catalogs and campaign systems can generate many parameter combinations. A documented policy helps preserve useful filtered experiences while keeping internal links, canonicals, sitemaps, and crawler access aligned with the intended indexable pages.
Practical next steps
- Inventory parameter patterns and classify whether each one changes substantive content, presentation, tracking, sorting, or access state.
- Use approved internal-link, canonical, redirect, sitemap, and application rules to establish intended crawl and index behavior.
- Test representative URLs and monitor crawler activity and selected canonicals; use robots.txt only when its crawl effect is understood and approved.
What to keep in mind
Google Search Console’s former URL Parameters tool is no longer available. Do not apply blanket blocks: a parameter may expose unique, valuable content or support required functionality, and architectural controls belong with the developer.