Technical SEO Checklist: 15 Fixes That Move Rankings

Before you spend on content or backlinks, fix these 15 technical issues. In our experience running SEO for Singapore SMEs, technical fixes alone often lift traffic 20 to 40 percent within 90 days.

Crawl and index

1. Submit an XML sitemap in Google Search Console.
2. Check robots.txt allows all main crawlers, including AI bots.
3. Fix 404 errors with 301 redirects to the closest live page.
4. Remove noindex from pages that should rank.

Core Web Vitals

5. Compress images, use WebP or AVIF.
6. Lazy-load below-the-fold images.
7. Preload critical fonts.
8. Minify CSS and JavaScript.

On-page

9. Unique title tag under 60 characters per page.
10. Meta description under 160 characters.
11. One H1 per page, matching search intent.
12. Internal links from high-authority pages.

Schema and AI-readiness

13. Add Organization JSON-LD on the homepage.
14. Add Service JSON-LD on service pages.
15. Publish an llms.txt file for AI crawlers.

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