fusengine/seo-hreflang
plugins/seo/skills/seo-hreflang/SKILL.md
Use when auditing or generating hreflang for i18n SEO. Covers HTML link tags, HTTP headers, XML sitemap hreflang, self-referencing, return tags, x-default, ISO 639-1 + ISO 3166-1 code validation.
$ install --global
skillsauthnpx skillsauth add fusengine/agents seo-hreflangInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
Security Scan Results
3 of 9 scanners reported clean
Some scanners were skipped, did not run, or reported a non-clean status. Review each row below.
3
Scanners Passed
9
Scanners in report
Clean
TrivyContainer and dependency vulnerability scanner
95%
Clean
SemgrepStatic code analysis for vulnerabilities
95%
Clean
mcp-scan (Snyk)Model Context Protocol security validation
95%
Skipped
Snyk (dep)Open source security scanning
50%
Skipped
Socket.devSupply chain security analysis
50%
Skipped
VirusTotalMulti-engine malware detection
50%
Skipped
CrowdStrikeAdvanced threat intelligence
50%
Skipped
OSV-ScannerOpen Source Vulnerability database check
50%
Skipped
OWASP Dep-Check
50%
Last scanned: May 17, 2026, 2:52 AM213.3s1 file scanned
SKILL.md
- name:
- seo-hreflang
- description:
- Use when auditing or generating hreflang for i18n SEO. Covers HTML link tags, HTTP headers, XML sitemap hreflang, self-referencing, return tags, x-default, ISO 639-1 + ISO 3166-1 code validation.
- user-invocable:
- false
- related-skills:
- seo, seo-technical, seo-sitemap
Hreflang / i18n SEO
Workflow
- Detect hreflang tags (HTML
<link>, HTTP header, or XML sitemap) - Run
scripts/parse-hreflang.ts→ validate - Check self-referencing, return tags, x-default
- Verify language/region codes (ISO 639-1 + ISO 3166-1)
Common Mistakes
- ❌ Missing self-reference (
<link rel="alternate" hreflang="fr" href="/fr/">from/fr/) - ❌ Missing return tags (A → B but not B → A)
- ❌ Invalid codes (
en-UKinstead ofen-GB) - ❌ HTTP/HTTPS mismatch between alternates
- ❌ Mixing trailing slashes
Implementation Options
- HTML head:
<link rel="alternate" hreflang="fr-FR" href="https://example.com/fr/"> - HTTP Header:
Link: <https://example.com/fr/>; rel="alternate"; hreflang="fr-FR" - XML Sitemap:
<xhtml:link rel="alternate" hreflang="fr-FR" href="https://example.com/fr/"/>
x-default
Required for international landing/locale selector pages:
<link rel="alternate" hreflang="x-default" href="https://example.com/">
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