A query parameter is not automatically redundant. ?page=2 may show different products, ?sort=price may reorder the same products, and ?utm_source=newsletter may describe a visit’s origin. A cleanup must preserve those differences.
Build a list that records consequences
Collect the parameter names actually in use. For each one, record what changes on the page and whether shop links need it. Do not copy sensitive values, such as session keys, into a public worksheet.
Fictional example: a team removes all parameters from canonical URLs. The second results page now points to the first, even though it contains different articles. The apparent simplification has grouped different content together.
| Purpose | Fictional example | What to check |
|---|---|---|
| Content selection | ?colour=yellow | Does the offering change? |
| Sorting | ?sort=price | Does only the order change? |
| Pagination | ?page=2 | Are additional results shown? |
| Campaign | ?utm_source=newsletter | Does the main content stay the same? |
These are working categories, not automatic indexing rules. A filter may create a useful search destination or many interchangeable combinations.
Decide how each variant should be used
Open two versions side by side and compare their visible results. Then inspect internal links, canonical URLs and existing crawling rules. Avoid changing these signals independently.
For each parameter, decide whether redirects must preserve it, whether internal links should include it and which URL should be preferred. Allowing every combination and removing every parameter are both blanket decisions that need justification.
Sorting is different from a category
Fictional example: /shoes/?sort=price shows the same twelve models as /shoes/, in a different order. /shoes/?feature=waterproof shows four matching models. The first changes order; the second changes selection. Check pagination too: a different sort order can place different products on a particular page.
Whether the filtered selection deserves its own search destination depends on demand and ongoing maintenance. Swapping a filter name above an otherwise unchanged list is insufficient justification.
Different offers must remain distinguishable
/course/?location=hamburg and /course/?location=online may have different dates, delivery and prerequisites. Open both URLs in separate sessions: does the selection come from the address or only from stored browser state?
Choose preferred URLs after making that comparison. A shared template does not prove equivalent content. Preserve necessary interface states and check selection, basket behaviour and browser Back after changes. Record which content each parameter changes, which URLs are linked internally and who maintains them.
Related check: Check a canonical redirect destination.
If URL state spans several technical layers, the Technology and stack review can assess their interaction. It does not replace search-demand research.