Technical SEO Checklist: Complete Optimization Guide

Technical SEO is the foundation of search engine optimization. Without a solid technical base, even great content won't achieve ideal rankings.

1. Site Architecture

Check Item Description Priority
URL Structure Short, include keywords, use hyphens High
Breadcrumb Navigation Clear hierarchy, include structured data High
XML Sitemap Submit to Google Search Console High
404 Pages Return 404 status, provide navigation Medium
301 Redirects Set after page migration High

2. Speed Optimization

Metric Tool Target
LCP Lighthouse < 2.5s
FID Web Vitals < 100ms
CLS Lighthouse < 0.1
TTFB WebPageTest < 800ms

3. Mobile Friendliness

  • Responsive design
  • Disable unnecessary popups
  • Button click area > 48px
  • Font size > 16px

4. Structured Data

{
  "@context": "https://schema.org",
  "@type": "Article",
  "headline": "Article Title",
  "author": "Author",
  "datePublished": "2026-07-18",
  "description": "Article description"
}

5. Index Management

  • robots.txt configuration
  • noindex tags
  • canonical tags
  • hreflang for multilingual sites