HTML / XML / JS, low-level validity (cross-cutting)MediumInferred
Malformed/duplicate meta tags
Malformed or duplicated meta tags, two descriptions, a broken robots tag, give conflicting or invalid instructions. Each meta should appear once and be well-formed.
What it is
Broken or repeated metas.
Why it matters
Ambiguous/ignored directives.
How to fix it
Clean up meta tags.
How to find it on your site
- View source and review the meta tags for duplicates and malformed syntax.
- Identify templates or plugins producing the clashes.
- Consolidate to single, valid meta tags.
- Re-validate.
Cross-reference to ranking and citation factors
Malformed or duplicate meta tags cause conflicting or ignored directives. Clean, single tags keep behaviour predictable.
Impact
Low-medium. Inferred.
Evidence
Valid meta tags ensure intended handling. Google Search Central, Robots Meta Tags Specifications