Duplicate Content
Checks for signs of duplicated content across URLs — a silent killer of ranking.
What this check measures
We compare content fingerprints across sampled URLs to detect near-duplicates. Common sources: www + non-www both serving, http + https both serving, trailing-slash variants, duplicate print versions.
Why it matters
Duplicate content splits ranking signals across URLs. Google picks one as canonical and deprioritizes the rest. Without explicit canonicals, Google's pick may not be yours — and your traffic suffers.
How our audit detects it
Sample URLs and hash content (excluding boilerplate). Flag pairs with >85% text similarity. Also check common duplicate patterns (www vs apex, http vs https).
Typical findings
- error_outlineBoth www.example.com and example.com serve 200 responses with identical content.
- error_outlineTrailing-slash vs no-trailing-slash both resolve to the same content.
- error_outlinePrint version at /print/article-name duplicates the regular article.
- error_outlineQuery parameter URLs (?utm=...) serve identical content without canonical.
How to fix
Pick one canonical format (usually https + www or https + apex, with no trailing slash) and 301 all others to it. Add self-referencing canonical tags. Use URL parameters for tracking only, never for content variants.
Frequently asked questions
Does duplicate content cause a penalty?expand_more
Want this checked on your site?
Pantra runs the full audit (SEO, Security, GEO, Performance, Schema, Technical, Images) in 10 seconds and generates stack-specific fix prompts.
Scan my siteRelated checks
Meta Title
Checks that every page has a unique, keyword-rich <title> tag between 10-60 characters.
SEOMeta Description
Checks that every page has a unique meta description between 50-160 characters.
SEOH1 Tag
Checks that every page has exactly one H1 tag containing the primary keyword.
SEOHeading Hierarchy
Checks heading order — H1 → H2 → H3 without skipping levels.