There are technical SEO checklists with 200 items.

They're mostly busywork. You'll spend three weeks fixing things that move rankings by zero, while the two issues that actually matter sit untouched.

This is the opposite. The technical SEO checklist below is ordered by impact — fix the top items first, and stop when you hit diminishing returns. It's the same triage I run during a Goldie Agency audit (File 01 of the SEO Growth Playbook).

Tier 1 — The fixes that move rankings (do these first)

These are the issues that, when broken, actively suppress rankings. Fix them before anything else.

1. Indexation. Are your money pages actually indexed? Check site:yourdomain.com and Google Search Console's Pages report. Pages that aren't indexed can't rank. This is the single most common "why isn't this ranking" cause — and it's invisible if you don't check.

2. Accidental noindex / robots blocks. I've seen six-figure sites accidentally noindex their entire blog after a migration. Check your robots.txt and meta robots tags on templates, not just individual pages.

3. Canonicalisation. Are canonicals pointing to the right URLs? Self-referencing on unique pages, consolidating on duplicates. Wrong canonicals tell Google to ignore the page you want to rank.

4. Site architecture / crawl depth. Can Google reach your important pages in 3 clicks or fewer from the homepage? Pages buried 5+ clicks deep get crawled rarely and rank poorly. Flatten the architecture.

5. Internal linking to money pages. Your highest-value commercial pages should have the most internal links pointing at them. Most sites do the opposite — they link heavily to the blog and orphan the pages that convert.

If you only fix Tier 1, you'll capture 80% of the available technical upside on most sites.

Tier 2 — The fixes that matter (do these next)

6. Core Web Vitals. LCP, INP, CLS. Google confirmed these are ranking signals. They rarely make or break a ranking on their own, but on competitive terms they're a tiebreaker. Fix the worst offenders, don't chase a perfect 100.

7. Mobile usability. Google indexes mobile-first. If your mobile experience is broken, your rankings suffer everywhere. Test real pages on a real phone, not just Lighthouse.

8. HTTPS and mixed content. Should be table stakes by 2026, but mixed-content warnings still sink sites. Verify.

9. XML sitemap hygiene. Sitemap should contain only canonical, indexable, 200-status URLs. No redirects, no 404s, no noindex pages. A dirty sitemap wastes crawl budget.

10. Structured data. Schema markup for articles, products, FAQs, breadcrumbs, organisation. Won't directly boost rankings, but earns rich results that lift click-through — which indirectly helps.

11. Pagination and faceted navigation. Especially for ecom. Misconfigured faceted nav creates millions of crawlable junk URLs that dilute crawl budget. Handle with care.

12. Redirect chains. Every hop in a redirect chain leaks a little authority and slows crawling. Collapse chains to single 301s.

Tier 3 — The fixes that help at the margins (do these if you have time)

13. Image optimisation (next-gen formats, lazy loading, alt text) 14. Crawl budget optimisation (for large sites only — small sites don't have a crawl budget problem) 15. Log file analysis (see what Googlebot actually crawls vs ignores) 16. Hreflang (only if you're genuinely multi-region/multi-language) 17. JavaScript rendering (verify Google can render JS-dependent content) 18. Orphan page cleanup (pages with zero internal links) 19. Thin/duplicate content consolidation 20. 404 monitoring and cleanup

These matter, but they're refinements. Don't let them distract you from Tier 1.

The triage principle

Here's the meta-lesson that's worth more than the checklist itself.

Technical SEO has massively diminishing returns.

The first five fixes might lift a struggling site 30-50%. The next ten might add 10%. The final eighty-five items on a typical "200-point checklist" might collectively add 2%.

Most SEOs invert this. They start at item 1 of an alphabetical checklist and grind through busywork while the high-impact issues wait. Don't. Triage by impact, fix the top tier, and move your energy to content and links — which is where the bigger gains usually live anyway.

How technical fits the bigger picture

Technical SEO is the foundation, not the building. A technically perfect site with thin content and no links won't rank. A technically decent site with great content and strong links will.

So: fix Tier 1 (it's blocking everything), get Tier 2 to "good enough," then redirect your energy to the content engine (File 03) and the link system (File 04). That's where compounding growth actually comes from.

What's next

This checklist is File 01 of the SEO Growth Playbook. The content and link files are where the real growth lever sits.

The free Link Building Mastery book covers the link system in depth. And if you want a full technical audit run on your site by my team, book a free strategy call — we'll diagnose your Tier 1 issues live.