seo-hreflang

To audit hreflang tags, validate self-referencing tags, bidirectional return links, and x-default attributes to identify common international SEO mistakes. This ensures canonical alignment and protocol consistency across multi-language sites.

Hreflang bidirectional return tag validation ensures each language variant links back to its alternates in a mesh. If an en-US page points to fr, the fr page must point back to en-US, preventing broken cross-language signals.

Generate hreflang markup by validating ISO 639-1 language and ISO 3166-1 region codes, then outputting compliant tags for HTML, HTTP headers, or XML sitemaps. This ensures correct delivery across different site architectures.

An x-default tag is needed to specify a default page for unmatched language or region visitors. Auditing verifies proper x-default implementation and ensures canonical URL alignment across all language variants.

Yes, cross-domain hreflang configurations can be validated for multiple language variants like en-US, fr, de, and ja-JP. The audit checks interlinking, canonical alignment, and protocol consistency across different domains.

Common hreflang mistakes include missing self-referencing tags, broken bidirectional return links, incorrect ISO 639-1 language or ISO 3166-1 region codes, and canonical URL misalignment across language variants.