seo-fundamentals

原文涵盖的主题

• SEO Fundamentals
• 1. E-E-A-T Framework
• 2. Core Web Vitals
• 3. Technical SEO Principles
• Site Structure
• Performance
• 4. Content SEO Principles
• Page Elements

Principles for search engine visibility. -- | Principle | Signals | |-----------|---------| | Experience | First-hand knowledge, real examples | | Expertise | Credentials, depth of knowledge | | Authoritativeness | Backlinks, mentions, industry recognition | | Trustworthiness | HTTPS, transparency, accurate info | -- | Metric | Target | Measures | |--------|--------|----------| | LCP | < 2.5s | Loading performance | | INP | < 200ms | Interactivity | | CLS | < 0.1 | Visual stability | -- | Element | Purpose | |---------|---------| | XML sitemap | Help crawling | | robots.txt | Control access | | Canonical tags | Prevent duplicates | | HTTPS | Security signal | | Factor | Impact | |--------|--------| | Page speed | Core Web Vital | | Mobile-friendly | Ranking factor | | Clean URLs | Crawlability | -- | 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 | | Factor | Importance | |--------|------------| | Depth | Comprehensive coverage | | Freshness | Regular updates | | Uniqueness | Origin

这里只展示节选，请以完整原文和当前要求为准。