The Ultimate Technical SEO Checklist

Technical SEO ensures that your website meets the technical requirements of modern search engines with the goal of improved organic rankings. Use this checklist to audit your site's technical foundation.

1. Crawlability & Indexation

• Robots.txt: Verify your robots.txt file is not accidentally blocking critical pages or resource folders (CSS/JS).
• XML Sitemap: Generate a valid, clean XML sitemap containing only canonical, 200 OK URLs. Submit it to Google Search Console.
• Noindex Tags: Ensure that staging environments, internal search results, and thin utility pages have the noindex meta tag applied.
• Orphan Pages: Crawl your site to find pages with no internal links pointing to them. Add internal links to these pages.

2. URL Structure & Architecture

• HTTPS/SSL: Ensure your entire site loads over a secure HTTPS connection. Force HTTPS via 301 redirects from HTTP.
• WWW vs Non-WWW: Choose one version (e.g., https://example.com or https://www.example.com) and strictly 301 redirect the other to it.
• Canonical Tags: Every page should have a self-referencing canonical tag to prevent duplicate content issues.
• Clean URLs: Keep URLs short, descriptive, lowercase, and use hyphens (-) to separate words, not underscores.

3. Performance & Core Web Vitals

• LCP (Largest Contentful Paint): Optimize server response times and preload large hero images to ensure the main content loads in under 2.5 seconds.
• CLS (Cumulative Layout Shift): Define explicit width and height attributes for all images and ad slots to prevent the page layout from shifting as it loads.
• Mobile Responsiveness: Verify the site renders perfectly on mobile devices, with appropriately sized touch targets.

4. Structured Data (Schema Markup)

• Implement JSON-LD: Add relevant Schema.org markup to help Google understand your content. Use Article schema for blogs, Product schema for e-commerce, and LocalBusiness schema for local sites.
• Validate Schema: Use Google's Rich Results Test tool to ensure your markup is error-free.