An honest SEO audit checklist for B2B is shorter than most agency pitch decks suggest. Lighthouse-style 100-item lists generate noise without action. This checklist focuses on the 30 items that actually move organic traffic and conversions for B2B SaaS sites in 2026, organised by category with rough effort estimates so you can prioritise.

Technical foundation (8 items)

1. Crawlability: confirm robots.txt does not block JS or CSS, sitemap submitted in GSC, canonical tags self-referential. Effort: 1-2 hours. 2. Indexation health: GSC Coverage report shows expected page count indexed, no soft 404s. Effort: 2-4 hours. 3. Core Web Vitals: LCP under 2.5s, CLS under 0.1, INP under 200ms on mobile. Effort: 4-12 hours. 4. Mobile rendering: GSC Mobile Usability report clean, key pages render identically on mobile. Effort: 1-2 hours.

5. Schema markup: Organization, WebSite, BreadcrumbList on all pages, Service on service pages, FAQPage where applicable, Article on blog. Effort: 2-6 hours. 6. hreflang for multi-language sites — reciprocal pairs, x-default points to canonical language. Effort: 2-8 hours. 7. Redirect chains: no 301→301→200 chains, redirect loops eliminated. Effort: 1-4 hours. 8. HTTPS hygiene: no mixed content warnings, SSL valid, HSTS enabled. Effort: 1 hour.

On-page optimisation (7 items)

9. Title tags: 55-65 characters, marker in first 30 characters, unique across the site. Effort: 4-8 hours for full site rewrite. 10. Meta descriptions: 140-160 characters with marker and CTA. Effort: 3-6 hours. 11. H1 uniqueness: single H1 per page, marker present, distinct from title tag. Effort: 2-4 hours. 12. URL structure: clean slugs, lowercase, hyphens (not underscores), no parameters where avoidable. Effort: 0-2 hours if already clean.

13. Internal linking architecture: hub-and-spoke from pillar pages to supporting articles, 3-5 internal links per article on average. Effort: 6-12 hours full audit. 14. Image optimisation: WebP format, lazy loading, descriptive alt text. Effort: 2-6 hours. 15. Cannibalisation check: no two pages target the same primary keyword unless deliberately differentiated. Cannibalisation analysis usually surfaces 5-15% of content competing with itself. Effort: 4-8 hours.

Content quality and structure (6 items)

16. Buyer-stage content coverage: pillar pages for high-intent commercial queries, supporting articles for educational queries, comparison pages for vendor evaluation queries. Effort: 8-20 hours per cluster. 17. Content depth vs competitors: top-ranking pages average word count, depth, and topical coverage matched or exceeded. Effort: 2-4 hours per topic. 18. EEAT signals: author bylines, expert quotes, original data, transparent sourcing. Effort: ongoing.

19. Content freshness: high-traffic articles refreshed every 12-18 months with current data and links. Effort: 2-4 hours per refresh. 20. Internal expert content: at least 30% of articles authored by named in-house experts, not freelance writers. Effort: ongoing. 21. Comparison and alternatives content: vendor comparison pages targeting «X vs Y» and «best X alternatives» queries. Effort: 8-12 hours per page, but highest converting category for B2B SaaS.

Link profile health (5 items)

22. Domain Rating trajectory: stable or growing month over month, no recent drops indicating link removal. Effort: monitoring. 23. Toxic link audit: no obvious spam directory backlinks, PBN-pattern links, or unrelated foreign-language low-quality sites. Effort: 4-8 hours quarterly. 24. Anchor text distribution: 30-40% branded, 30-40% URL/generic, 20-30% partial-match, under 10% exact-match commercial. Effort: 4-6 hours analysis.

25. Link velocity: 5-15 quality referring domains added monthly at growth stage. Spikes above 30 per month look unnatural. Effort: monitoring. 26. Internal-versus-external link balance: every blog article should have 3+ internal links and 2+ external links to authoritative sources. Effort: ongoing during content production.

Conversion and tracking (4 items)

27. Conversion tracking integrity: GA4 events fire correctly, server-side GTM in place to survive ad blockers, conversions reported back to ad platforms. GA4 implementation audit usually finds 20-40% of conversion events misconfigured. Effort: 4-8 hours. 28. CRM data flow: form submissions push to CRM with proper attribution (UTM, referrer, page). Effort: 4-12 hours.

29. CTA clarity: every commercial page has one primary CTA above the fold and one secondary CTA. Effort: 2-4 hours review plus iterative testing. 30. Lead-to-customer attribution: pipeline metrics from CRM tied back to organic content that drove first-touch and influenced opportunities. Effort: 8-16 hours setup.

How to use this checklist

Walk through items 1-15 in week one of any audit — those are technical and on-page foundation issues that block everything else. Items 16-26 are content and link quality work that compounds over months. Items 27-30 are tracking infrastructure that determines whether you can measure improvement at all. Build a prioritised fix list ranked by traffic impact estimate divided by implementation effort — that’s the order to ship.

What this checklist intentionally skips

Three things missing from many checklists but rarely worth the effort for B2B SaaS: keyword density (Google does not need a target percentage). Meta keywords tag (deprecated since 2009 but still on some checklists). Domain authority score targeting (it’s a third-party metric, not a Google ranking factor). Anyone selling these as audit deliverables is selling padding rather than value.

When to skip the audit and just rebuild

If your site has 50% of these items broken, an audit telling you what to fix may not be the right deliverable — a redesign or rebuild may be cheaper and faster than fix-by-fix. Threshold: if estimated total fix-list effort exceeds 40 hours per page on average for top 20 pages, redesign math wins. SEO-led redesigns protect ranking equity through migration when this is the right call.

About Global One Digital

Global One Digital is a B2B SEO and automation agency for Series A through Series C SaaS companies in the US and EU. We focus on the unglamorous work that compounds — technical SEO that survives Google updates, content tied to commercial intent, and workflow automation that removes manual operations bottlenecks. Learn more about our team or reach out for a discovery call.