The 2026 Technical SEO Checklist — 38 Items You Can Actually Verify

Every SEO tool ships a checklist. Most are padded with vague items nobody can verify. This one has 38 items — each with a pass/fail definition you can check in under five minutes.

Crawl (8 items)

• robots.txt reachable and returns 200.
• robots.txt does not accidentally block /wp-content/uploads.
• GPTBot, ClaudeBot, PerplexityBot not blocked (unless intentional).
• sitemap.xml reachable and referenced in robots.txt.
• sitemap.xml contains every indexable URL.
• sitemap.xml has no 404 or 3xx URLs.
• No infinite calendar/facet crawl traps.
• Crawl budget spent >80% on indexable URLs.

Index (10 items)

• Every canonical is self-referential or intentional.
• No canonical loops.
• No canonical to a redirect.
• Noindex directives only on intentional pages.
• hreflang alternates are reciprocal.
• Pagination uses rel=next/prev OR self-canonical strategy — not both.
• No index-blocking directives in x-robots headers on indexable pages.
• Search Console coverage shows <5% excluded 'not indexed'.
• Wildcards in Search Console URL params don't over-collapse.
• No pages with title = 'Untitled'.

Render (6 items)

• Rendered HTML contains all critical content.
• No CLS from late-loaded ads or images.
• LCP element is above the fold and has proper preload.
• Fonts load without FOIT longer than 100ms.
• Third-party scripts are lazy-loaded.
• Total blocking time <200ms on p75 mobile.

Schema (7 items)

• Exactly one Article/BlogPosting per post URL.
• @id present and unique.
• BreadcrumbList reflects real navigation.
• FAQPage on question-shaped URLs only.
• HowTo only on true tutorials.
• Product schema matches WooCommerce data 1:1.
• No conflicting emitters across plugins.

AI + logging (7 items)

• /llms.txt reachable at root.
• GPTBot user-agent visible in raw access logs.
• AI citation tracking configured (weekly manual check acceptable).
• author.sameAs configured on every article.
• Organization schema exists at root.
• Structured data errors in Search Console = 0.
• Log-based crawl analysis run monthly.