seo-fundamentals

# SEO Fundamentals > Principles for search engine visibility. --- ## 1. E-E-A-T Framework | Principle | Signals | |-----------|---------| | **Experience** | First-hand knowledge, real examples | | **Expertise** | Credentials, depth of knowledge | | **Authoritativeness** | Backlinks, mentions, industry recognition | | **Trustworthiness** | HTTPS, transparency, accurate info | --- ## 2. Core Web Vitals | Metric | Target | Measures | |--------|--------|----------| | **LCP** | < 2.5s | Loading performance | | **INP** | < 200ms | Interactivity | | **CLS** | < 0.1 | Visual stability | --- ## 3. Technical SEO Principles ### Site Structure | Element | Purpose | |---------|---------| | XML sitemap | Help crawling | | robots.txt | Control access | | Canonical tags | Prevent duplicates | | HTTPS | Security signal | ### Performance | Factor | Impact | |--------|--------| | Page speed | Core Web Vital | | Mobile-friendly | Ranking factor | | Clean URLs | Crawlability | --- ## 4. Content SEO Principles ### Page Elements | Element | Best Practice | |---------|---------------| | Title tag | 50-60 chars, keyword front | | Meta description | 150-160 chars, compelling | | H1 | One per page, main keyword | | H2-H6 | Logical hierarchy | | Alt text | Descriptive, not stuffed | ### Content Quality | Factor | Importance | |--------|------------| | Depth | Comprehensive coverage | | Freshness | Regular updates | | Uniqueness | Original value | | Readability | Clear writing | --- ...