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)
<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