international-seo-hreflang-audit

Installation
SKILL.md

International SEO & Hreflang Visibility Audit

Audit multilingual and multi-regional website configurations to ensure search engines and AI answer engines correctly index, disambiguate, and cite regional content (pricing, currency, inventory, and language variations).

Workflow

  1. Discover Language & Regional Architecture:

    • Inspect sampled URLs across language/regional prefixes (/en/, /es/, /de/, /fr-ca/), subdomains (uk.example.com), or ccTLDs.
    • Extract <link rel="alternate" hreflang="..." href="..."> tags in HTML <head> and Link: HTTP response headers [GOOGLE-HREFLANG-01].
    • Inspect XML sitemaps for xhtml:link localized alternate declarations [GOOGLE-HREFLANG-01].
  2. Verify Language & Region Code Validity:

    • Validate language subtags against ISO 639-1 (e.g., en, es, de, fr, zh) [W3C-ISO-LANG-01].
    • Validate optional regional subtags against ISO 3166-1 Alpha-2 (e.g., en-US, en-GB, es-MX, pt-BR) [W3C-ISO-LANG-01].
    • Flag invalid combinations (e.g., using country codes as language codes, or using script codes incorrectly).
  3. Audit Bidirectional Return Links (Reciprocity):

    • For every sampled page A with hreflang pointing to alternate page B, fetch page B and verify it contains a reciprocal hreflang link pointing back to page A [GOOGLE-HREFLANG-01].
    • Flag broken or missing return links that cause search engines to ignore regional clustering.
Installs
1
GitHub Stars
1
First Seen
Sep 3, 2026
international-seo-hreflang-audit — wakqasahmed/ai-visibility-skills