Technical SEO Checklist: 12 Fixes That Actually Move Rankings

Great content will not rank if search engines cannot crawl, render, and trust your site. This technical SEO checklist covers the 12 fixes that consistently move the needle in 2026 - no filler.

Crawlability and indexing

1. Fix your robots.txt and sitemap

Make sure important pages are not blocked and that an accurate XML sitemap is submitted in Google Search Console. Remove low-value pages from the index with noindex where appropriate.

2. Eliminate crawl waste

Consolidate duplicate URLs, fix redirect chains, and use canonical tags so search engines spend their crawl budget on pages that matter.

Core Web Vitals and speed

3. Pass Core Web Vitals

Optimise Largest Contentful Paint, Interaction to Next Paint, and Cumulative Layout Shift. Compress images, defer non-critical scripts, and reserve space for media to prevent layout shifts.

4. Serve modern image formats

Use WebP or AVIF with correct sizing and lazy loading. Images are the most common cause of slow pages.

Structure and semantics

5. Use a clean heading hierarchy

One H1 per page, logical H2/H3 nesting, and descriptive headings help both users and AI-driven search understand your content.

6. Add structured data

Implement schema for articles, products, FAQs, and organisations. This is increasingly important for AI answer engines that cite structured, machine-readable content.

7. Strengthen internal linking

Link related pages with descriptive anchor text to spread authority and help crawlers discover deep pages. Our SEO team maps this into a deliberate site architecture.

Mobile, security, and trust

8. Be genuinely mobile-first

Google indexes the mobile version of your site. Ensure content parity, tap-friendly targets, and no horizontal scrolling.

9. Enforce HTTPS

Serve every page over HTTPS and fix mixed-content warnings. Security is a baseline ranking and trust signal.

10. Clean up 404s and orphan pages

Redirect valuable broken URLs and connect orphan pages so nothing important is stranded.

Measurement and AI visibility

11. Track the right metrics

Monitor impressions, clicks, and average position in Search Console rather than vanity metrics. Watch which queries you rank for and where you sit on page two - those are your quickest wins.

12. Optimise for AI answer engines

Write clear, question-led sections with concise answers, add FAQs, and keep facts current. This helps tools like ChatGPT, Gemini, and Perplexity cite your pages.

Where to start

Run an audit, fix crawl and speed issues first, then layer in structured data and internal linking. If you want a prioritised, done-for-you plan, request an SEO audit.