seo-optimization

# SEO Optimization Skill ## 🔴 AI FIRST Quality Principle > **Apply the AI FIRST principle: never accept first-pass quality. Minimum 2 iterations. Read all output, improve every section. No shortcuts.** ## Purpose Ensures websites are optimized for search engines following modern SEO best practices with focus on technical SEO, structured data, and multilingual support. ## Meta Tags (MUST HAVE) - `<title>` — 50-60 characters, unique per page - `<meta name="description">` — 150-160 characters, unique per page - `<link rel="canonical">` — Canonical URL - Open Graph tags (og:title, og:description, og:image, og:url) - Twitter Card tags ## Structured Data (Schema.org) - Organization, WebSite, BreadcrumbList - NewsArticle for news content - FAQPage for FAQ sections - Person entities with sameAs links ## Multilingual SEO (hreflang) ```html <link rel="alternate" hreflang="en" href="/index.html"> <link rel="alternate" hreflang="sv" href="/index_sv.html"> <link rel="alternate" hreflang="x-default" href="/index.html"> ``` ## Semantic HTML for SEO - Use `<h1>` once per page - Proper heading hierarchy (h1→h2→h3) - Semantic elements (article, nav, header, footer) - Descriptive alt text on all images - Descriptive anchor text ## Performance Requirements - Lighthouse Performance ≥ 90 - LCP < 2.5s, FCP < 1.5s - WebP images with fallbacks - Minify HTML/CSS/JavaScript - Lazy loading for images ## Sitemap & Robots - Complete sitemap.xml with lastmod and priority - Include hreflang alternates in sitemap - Proper robots.txt configuration ## SEO Checklist - [ ] Unique title and description per page - [ ] Canonical URLs specified - [ ] Schema.org structured data - [ ] hreflang tags for all 14 languages - [ ] sitemap.xml complete and submitted - [ ] Mobile-friendly responsive design - [ ] HTTPS enforced - [ ] No broken links