Check hreflang tags for invalid values, broken URLs, duplicates, and canonical issues to improve international SEO and language targeting.
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Validates language/region codes against ISO standards to flag malformed values like underscores or incorrect region formats.
Identifies when the same language/region pair is assigned to multiple targets, preventing conflicting regional signals to search engines.
Flags tags missing either the hreflang attribute or the target href URL so broken markup can be quickly repaired.
Highlights tags pointing to insecure HTTP URLs to help avoid unnecessary protocol redirects across international setups.
Audits target URLs for response errors (4xx/5xx status codes) and redirects (3xx status codes) to ensure all alternate links point directly to 200 OK pages.
Cross-checks hreflang destinations against their canonical tags to catch URLs canonicalising elsewhere or containing conflicting multi-canonical tags.