What problem does it solve? Multi-language and multi-region sites frequently ship broken hreflang implementations—missing return tags, invalid ISO language or region codes, and hreflang on non-canonical URLs—that cause Google to ignore international targeting signals entirely. This Skill audits existing implementations, detects these mistakes, and generates correct hreflang tags. ## Core Features & Use Cases - Hreflang Validation: Checks self-referencing tags, bidirectional return tags, x-default fallbacks, ISO 639-1 language codes, ISO 3166-1 region codes, canonical URL alignment, and protocol consistency. - Tag Generation: Produces hreflang implementations as HTML link tags, HTTP headers, or XML sitemaps, with method recommendations based on site scale. - Localization Audits: Assesses cultural adaptation, content parity across language versions, and locale format consistency (numbers, dates, currencies) using bundled reference profiles. - Use Case: A site with English, German, and Japanese versions is losing international traffic. Run the audit to find that the German pages lack return tags and use en-uk instead of en-GB, then generate a corrected hreflang sitemap ready to deploy. ## Quick Start Ask the assistant to audit the hreflang implementation for your site URL and generate corrected tags for all language versions.
