seo-hreflang

Validate and generate hreflang tags for multi-language websites.

Updated Jun 5, 2026
One-click install
npx skills add https://github.com/smarmen86/claude-code-kit --skill seo-hreflang-smarmen86
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: seo-hreflang
Source: https://github.com/smarmen86/claude-code-kit/tree/main/skills/seo-hreflang
Command: npx skills add https://github.com/smarmen86/claude-code-kit --skill seo-hreflang-smarmen86

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This skill resolves complex international SEO challenges by automating the validation, generation, and auditing of hreflang tags, ensuring your multi-language and multi-region site structure is correctly interpreted by search engines.

Core Features & Use Cases

  • Hreflang Validation: Automatically detects missing self-referencing tags, broken return-tag relationships, and invalid language/region codes.
  • Cultural Adaptation Audit: Assesses content parity and cultural markers like currency, date formats, and legal requirements across different locales.
  • Use Case: Use this skill when launching a new market expansion to ensure your German, French, and Japanese site versions are properly linked and culturally optimized to avoid duplicate content penalties and ranking issues.

Quick Start

Use the seo-hreflang skill to audit the international SEO implementation for the website at https://example.com.

Frequently Asked Questions about seo-hreflang

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I validate hreflang tags for international SEO across multi-language websites?

Hreflang validation checks multi-language websites for missing self-referencing tags, broken bidirectional return-tag relationships, and invalid language or region codes to ensure proper international SEO targeting.

What is hreflang bidirectional return tag checking and why does it matter?

Hreflang bidirectional return tag checking verifies that reciprocal hreflang annotations exist between alternate language URLs, preventing search engines from ignoring your international targeting signals.

How do I generate ISO 639-1 and ISO 3166-1 compliant hreflang tags?

Generating ISO 639-1 and ISO 3166-1 compliant hreflang tags requires validating language and region codes against technical standards while aligning canonical URLs and cultural adaptation markers for specific locales.

Does hreflang auditing check content parity and cultural localization markers?

Hreflang auditing assesses content parity and cultural markers like currency, date formats, and legal requirements across different locales, providing actionable reports on localization quality for specific regions.

Why are my international SEO hreflang tags causing duplicate content penalties?

Duplicate content penalties from hreflang tags often stem from missing self-references, broken return-tag relationships, or canonical URL misalignment across language versions, which auditing can detect and resolve.

Can I audit hreflang implementation for a website expanding into new regional markets?

Auditing hreflang implementation for market expansion validates that German, French, and Japanese site versions are properly linked and culturally optimized to avoid ranking issues across multi-region structures.