Technical SEO is the foundation everything else sits on. You can write the best content in the world, but if Google cannot crawl, index, and understand your site properly, nobody will find it.
Core Web Vitals
- LCP (Largest Contentful Paint): Under 2.5 seconds. Optimise images, use lazy loading, enable server-side caching.
- INP (Interaction to Next Paint): Under 200ms. Minimise JavaScript, defer non-critical scripts.
- CLS (Cumulative Layout Shift): Under 0.1. Set explicit dimensions for images and ads.
Crawlability and Indexing
- Submit XML sitemap to Google Search Console and Bing Webmaster Tools
- Check robots.txt is not blocking important pages
- Fix broken links (4xx errors) and server errors (5xx)
- Use canonical tags to prevent duplicate content issues
Structured Data
- LocalBusiness schema for your company details
- Article schema for blog posts
- Product schema for e-commerce
- FAQ schema for question-and-answer sections
Mobile and Security
- Mobile-first responsive design (Google indexes mobile version first)
- HTTPS everywhere — no mixed content warnings
- Accessible navigation and proper heading hierarchy
Regular Maintenance
Technical SEO is not a one-time task. Run a technical audit monthly. Check Search Console for crawl errors weekly. Monitor page speed after every deployment.