Technical SEO Checklist: 20 Items Your Dev Team Should Fix
Technical SEO is the foundation everything else is built on. If search engines cannot properly crawl, render, and index your pages, no amount of great content will help you rank. Here are the 20 most impactful technical items to audit.
Critical Priority
1. SSL Certificate: Ensure your entire site runs on HTTPS. This is a confirmed ranking signal. 2. Mobile Viewport: Your viewport meta tag should be set to device-width with initial-scale=1. 3. Page Speed: Aim for under 2 seconds load time. Use Core Web Vitals as your benchmark. 4. No Noindex on Important Pages: Accidentally noindexing key pages is more common than you would think. 5. Canonical Tags: Every page should have a self-referencing canonical to prevent duplicate content issues.
High Priority
6. XML Sitemap: Submit a clean sitemap to Google Search Console. Update it when pages are added or removed. 7. Robots.txt: Ensure it is not blocking important resources or pages from being crawled. 8. HTTPS Redirect: All HTTP requests should 301 redirect to HTTPS equivalents. 9. 404 Pages: Broken pages should return a proper 404 status code, not a soft 404. 10. Clean URL Structure: Use readable, keyword-friendly URLs without excessive parameters.
Medium Priority
11. Compression: Enable gzip or Brotli compression to reduce page size. 12. Cache Headers: Set appropriate cache-control headers for static assets. 13. Render-Blocking Resources: Defer non-critical CSS and JavaScript. 14. Image Optimization: Use WebP or AVIF formats and implement lazy loading. 15. Structured Data: Implement JSON-LD schema for your business type.
Ongoing Maintenance
16. Security Headers: Add X-Content-Type-Options, X-Frame-Options, and CSP headers. 17. Server Version: Hide software version numbers in response headers. 18. Internal Links: Maintain a healthy internal link structure with descriptive anchor text. 19. Image Alt Text: Every meaningful image should have descriptive alt text. 20. Core Web Vitals Monitoring: Track LCP, FID, and CLS monthly through Search Console.
Working through this checklist systematically will build a strong technical foundation that supports all your other SEO efforts.