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Website Audit tool
Inspect the canonical URL tag on any page. Detect missing canonicals, conflicting HTML and HTTP header canonicals, cross-domain canonicals, protocol mismatches, and duplicate tags that can confuse search engines.
What it checks
Validate canonical URLs to prevent duplicate content issues.
Review crawlable content, metadata, headings, links, and page structure.
Spot issues that make pages harder to read, navigate, or trust.
Translate raw diagnostics into fixes your team can prioritize.
Methodology
Next steps
Interpretation
Use cases
Catch issues before a new page, redesign, or migration goes live.
Validate technical signals before blaming content quality or backlinks.
Create a repeatable check before sending client deliverables.
Popular checks
Next paths
Use these pages when the result points to a broader check, a fix workflow, or a related technical question.
Fix workflows
Fix duplicate title tags by tightening templates, dynamic metadata, and canonical choices across indexable pages.
Open fix guideFix canonical conflicts when the preferred URL does not match the current indexable page.
Open fix guideFix missing, broken, or stale XML sitemaps and make sure crawlers discover your priority URLs.
Open fix guideFrequently asked questions
No. Enter a URL or domain and run the check in your browser. Some results can be partial if the target site blocks requests or hides the data being checked.
The Canonical URL Checker runs live checks against the target website. Results reflect what was reachable at the time of the test, so retest after changing DNS, redirects, headers, or page content.
A canonical URL tells search engines which version of a page you prefer. Without it, duplicate URL variants such as http/https, www/non-www, trailing slashes, or URL parameters can create confusing signals.
Yes. Self-referencing canonical tags are a best practice. They confirm that this URL is the preferred version. Every indexable page should have one clear canonical tag.
Multiple conflicting canonical tags make the preferred URL ambiguous. Crawlers may ignore the hints and select a different canonical, so keep one clear canonical tag per indexable page.