The 47-Point Technical SEO Checklist for 2026

Why Technical SEO is Non-Negotiable

You can have the best content in the world — if Googlebot can't crawl, render, or index it efficiently, you'll lose to inferior competitors.

Crawlability (Points 1-12)

1. robots.txt allows Googlebot
2. XML sitemap submitted in GSC
3. No orphan pages
4. Internal linking depth ≤ 3 clicks from home
5. Proper canonical tags on every page
6. No infinite redirect chains (>2 hops)
7. 404s are <1% of crawled URLs
8. Pagination handled correctly
9. Faceted nav doesn't create thin duplicate URLs
10. hreflang on multilingual sites
11. Mobile-first crawling validated
12. crawl budget optimized for large sites

Core Web Vitals (Points 13-22)

1. LCP < 2.5s on 75th percentile
2. CLS < 0.1
3. INP < 200ms (replaced FID in 2024)
4. Lazy load below-the-fold images
5. Preload critical fonts
6. Server response time < 200ms
7. CDN deployed for static assets
8. Critical CSS inlined
9. JavaScript deferred or async
10. Image formats: WebP/AVIF with fallbacks

On-Page Technical (Points 23-35)

1. Title tag 30-60 chars
2. Meta description 120-160 chars
3. One H1 per page
4. Logical heading hierarchy (no H2 → H4 jumps)
5. Schema markup (Article, Product, FAQ, etc.)
6. Open Graph + Twitter cards
7. Image alt text on every img
8. Internal anchor text descriptive
9. URL structure: short, lowercase, hyphens
10. No URL parameters for content pages
11. Breadcrumb navigation + schema
12. 404 page is helpful and indexable
13. XML sitemap auto-updates

Security & Trust (Points 36-42)

1. HTTPS everywhere, valid cert
2. HSTS header set
3. No mixed content warnings
4. Content Security Policy header
5. Author bylines + bio pages
6. About / Contact / Privacy linked from footer
7. Trust signals (reviews, certifications, press)

Indexability (Points 43-47)

1. noindex only on intended pages
2. No accidental noindex in CMS
3. JavaScript rendering verified (use URL Inspection)
4. Server-side render or pre-render for JS-heavy SPAs
5. Soft 404s identified and fixed

How to Audit All 47 in 10 Minutes

Run outrank.so Site Audit — it covers every point above plus 80+ additional checks. Health score updated daily.