Technical SEO
SEO
by addyosmani / web-quality-skills
Optimize for search engine visibility and ranking.
53.6K installs
Hreflang
Verify the rendered HTML and HTTP response rather than relying only on source files.
Listed ·Updated
5 installs
Install data from skills.sh
About this skill
Hreflang is a Technical SEO skill for AI agents, published in the seoskills.sh catalog. Reach for it when your work involves crawlability, indexing, site architecture, Core Web Vitals, and log-file analysis. Install it with one command and it runs inside your own agent, so the work happens in your workflow, not a separate SEO tool.
SKILL.md
Add hreflang tags for multilingual sites
Without hreflang, users searching in French might see your English page—proper implementation ensures the right language version appears in search results for each region.
Quick Reference
- hreflang tells search engines which language version to show users
- Always include x-default for fallback/language selector pages
- Must be reciprocal—all pages must link to all variations
- Use ISO 639-1 language codes and ISO 3166-1 Alpha-2 regions
Check
Check if this multilingual website properly implements hreflang tags for language and regional targeting.
Fix
Add appropriate hreflang tags to indicate language and regional variations of this page.
Explain
Explain how hreflang tags help search engines serve the correct language version to users in different regions.
Code Review
Review metadata generation, rendered HTML, structured data, and response headers related to Add hreflang tags for multilingual sites. Flag exact routes or templates where search-facing output violates the rule, and describe how to verify the final page output.
For full implementation details, code examples, and framework-specific guidance,
see references/rule.md.
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