Technical Seo
URL Parameters
Query strings appended to URLs after a question mark (e.g., ?sort=price&color=blue) that modify the page content, filter results, or track sessions. They create multiple URL variations of what may be the same content.
Why URL Parameters Matters for SEO
Unmanaged URL parameters are one of the most common sources of crawl bloat and duplicate content. Tracking parameters, sort orders, and session IDs can multiply your URL count exponentially, wasting crawl budget on pages that add no indexing value.
How URL Parameters Works
Parameters are key-value pairs in the URL that tell the server how to modify the response. From an SEO perspective, you need to identify which parameters change content meaningfully (worthy of indexing) and which don't (should be canonicalised or blocked). Google Search Console previously let you configure parameter handling, but that tool was deprecated.
Common Mistakes
- Letting analytics UTM parameters create thousands of duplicate URLs
- Not canonicalising parameterised URLs back to the clean version
- Blocking parameters in robots.txt instead of using canonical tags
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