Search optimisation
Injected parameters
Arbitrary injected query parameters do not create indexable duplicates
What we check
Arbitrary injected query parameters do not create indexable duplicates
Why it matters
Unknown parameters can multiply one page into thousands.
How to fix it
Ignore unknown parameters or canonicalise them away.
How it affects your score
This check sits in Search optimisation, which is worth 25% of the overall score. A critical result costs the full weight of the check; a warning costs half. If we can't measure it on your page, we leave it out of the score entirely.