Technical SEO Checklist: 25 Must-Do Optimizations

Introduction to Technical SEO

Technical SEO forms the foundation of your website's search performance. Without a technically sound website, even the best content may struggle to rank. This checklist covers the essential technical optimizations every website needs.

Crawlability & Indexation

XML Sitemap

Create and submit an XML sitemap to Google Search Console

Include all important pages

Exclude noindexed pages

Keep it under 50,000 URLs per sitemap

Robots.txt Configuration

Allow access to important resources

Block duplicate content and admin pages

Don't accidentally block CSS/JS files

Test using Google's robots.txt tester

Page Speed & Performance

Core Web Vitals

LCP under 2.5 seconds

FID under 100ms

CLS under 0.1

Image Optimization

Compress images without quality loss

Use modern formats (WebP, AVIF)

Implement lazy loading

Add proper dimensions

Mobile Optimization

Responsive Design

Test on multiple devices

Ensure touch-friendly elements

Avoid horizontal scrolling

Check font readability

Conclusion

Technical SEO requires ongoing attention and regular audits. Use this checklist to ensure your website's technical foundation is solid.

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