Advanced Hreflang Module

Advanced hreflang validation tool with sitemap analysis and comprehensive validation features. Developed by William Harvey.

Hreflang Validator by William Harvey Professional Hreflang Checker & International SEO Audit Tool Find hreflang errors, validate international SEO implementations and identify issues across multilingual and multi-regional websites. Hreflang Validator is a free Chrome extension built for SEO professionals who need more than a basic hreflang checker. Analyse hreflang annotations across XML sitemaps, HTML pages and HTTP headers. Identify missing return links, incorrect language codes, canonical conflicts, broken alternate URLs and inconsistent hreflang clusters. Whether you're auditing a single page or investigating complex international implementations across multiple markets, Hreflang Validator helps you find technical issues that can undermine your international SEO strategy. 🔍 FOUR WAYS TO ANALYSE HREFLANG 1. Sitemap Index Analysis Discover and process XML sitemaps within sitemap indexes. Identify hreflang annotations across language and regional versions. Analyse relationships between alternate URLs. 2. XML Sitemap Validation Inspect hreflang declarations within XML sitemaps. Validate language and regional targeting. Identify incomplete or inconsistent alternate URL relationships. 3. HTML Hreflang Analysis Extract hreflang annotations from HTML head elements. Check self-referencing annotations and reciprocal links. Detect inconsistencies between alternate language versions. 4. HTTP Header Analysis Inspect hreflang annotations declared through HTTP Link headers. Validate alternate URLs and language codes. Support implementations where hreflang is delivered outside HTML. ✅ 12 ESSENTIAL HREFLANG VALIDATION CHECKS Identify technical SEO problems that are easy to overlook during international website audits. Hreflang syntax: Detect malformed or invalid annotations. Language codes: Validate ISO 639-1 language identifiers. Country codes: Check ISO 3166-1 regional identifiers. Return links: Identify missing or inconsistent reciprocal hreflang annotations. X-default: Review fallback language implementations. Self-referencing: Verify pages reference themselves correctly. HTTP status codes: Identify alternate URLs returning errors or redirects. Canonical consistency: Detect conflicts between canonical URLs and hreflang targets. Content-Language headers: Inspect language-related HTTP response headers. Cross-reference validation: Check consistency across alternate language versions. Sitemap verification: Track where hreflang annotations originate. Hreflang cluster analysis: Review relationships within complete language and regional groups. 🌍 BUILT FOR COMPLEX INTERNATIONAL WEBSITES International SEO becomes difficult when websites operate across multiple countries, languages, domains and content management systems. Hreflang Validator helps investigate common implementation problems, including: Language versions missing reciprocal annotations. Pages targeting the wrong country or language. Alternate URLs pointing to redirects or error pages. Canonical tags conflicting with hreflang declarations. Inconsistent hreflang groups across regional websites. Missing or incorrectly implemented x-default annotations. Useful for international migrations, technical SEO audits, localisation projects, website launches and ongoing SEO quality assurance. 📊 PROFESSIONAL SEO REPORTING Turn technical findings into actionable audit results. Clear validation results with error explanations. Summary metrics to identify implementation issues quickly. CSV exports for further investigation and reporting. Visual indicators to distinguish errors and warnings. Analysis history to review previous findings. Detailed logging for technical troubleshooting. Export findings, share them with developers and prioritise the hreflang issues that need attention. ⚡ DESIGNED FOR SEO WORKFLOWS Multiple analysis methods: Choose the source that matches your implementation. Configurable processing speed: Adjust analysis speed for different websites. Smart caching: Reduce repeated processing with a one-hour cache. Analysis history: Return to previous audits. Dark and light themes: Work in your preferred interface. 47 interface languages: Includes right-to-left language support. 👥 WHO IS IT FOR? Technical SEOs: Diagnose hreflang implementation issues and investigate complex international configurations. In-house SEO teams: Monitor language and regional targeting across international websites. SEO agencies: Conduct hreflang audits and export findings for client reporting. Web developers: Validate hreflang implementations during development, migrations and releases. International marketing teams: Identify targeting inconsistencies across multilingual websites. 🔒 PRIVACY FIRST No user tracking or analytics collection. Analysis runs locally within your browser. Preferences and analysis history are stored using Chrome storage. No external analysis server required for core functionality. 🚀 GET STARTED Install Hreflang Validator and open the extension. Enter a website URL or XML sitemap. Select your preferred analysis method. Review errors, warnings and hreflang relationships. Export your findings to CSV. Stop guessing whether your hreflang implementation is correct. Validate it. Hreflang Validator is developed by William Harvey, an international technical SEO specialist with over 25 years of experience. Built for the challenges of real-world international SEO, from individual multilingual websites to large-scale enterprise implementations. Free to use. Actively maintained. Built for SEO professionals.