Technical SEO Wiki & Knowledge Base
Learn the fundamentals of technical SEO. Click on any topic to read the full guide, complete with code examples and best practices.
robots.txt
Learn how to control web crawlers, manage crawl budgets, and block AI/LLM bots effectively.
Read guideTitle Tag
Master the most important on-page SEO element. Discover ideal pixel lengths and keyword placement.
Read guideMeta Description
Write compelling snippets that drive higher Click-Through Rates (CTR) from the search results.
Read guideXML Sitemap
Help search engines discover your pages faster. Learn about sitemap structure, tags, and limits.
Read guideCanonical Tag
Fix duplicate content issues across your site by consolidating ranking signals to a primary URL.
Read guideMeta Robots Tag
Learn how to use the noindex and nofollow directives to control indexing at the page level.
Read guideX-Robots-Tag
Control the indexing of non-HTML files like PDFs and images directly via HTTP response headers.
Read guideCore Web Vitals
Master Google's performance metrics: LCP, INP, and CLS to ensure a lightning-fast user experience.
Read guideLanguage & Hreflang
Optimize your international SEO. Learn how to implement HTML lang attributes and hreflang tags correctly.
Read guideJSON-LD Structured Data
Help search engines understand your content and win rich snippets in the SERPs using Schema.org markup.
Read guideURLs & Status Codes
Build SEO-friendly URLs and understand HTTP status codes — 200, 301/302 redirects, 404s and server errors.
Read guideHeading Structure
Structure your content with H1–H6 tags. Learn the H1 rules, logical hierarchy, and accessibility best practices.
Read guideContent & Readability
Word count, search intent, and the Flesch Reading Ease score — how to write content that ranks and reads well.
Read guideImage SEO
Optimize images with alt text, descriptive file names, compression, modern formats, and lazy loading.
Read guideLink Analysis
Master internal & external links, nofollow attributes, redirects (3XX), and broken links (4XX) for stronger SEO.
Read guideOpen Graph & Twitter Cards
Control how your pages look when shared on social media with Open Graph tags and Twitter Cards.
Read guideRendering (SSR vs CSR)
Understand server-side vs client-side rendering, how Googlebot renders JavaScript, and JavaScript SEO.
Read guidellms.txt & AI Crawlers
Prepare for AI search. Learn the llms.txt standard, the major AI crawlers, and Generative Engine Optimization.
Read guide