Best Free Website Audit Tools in 2026 — Honestly Compared (Including Ours)

Asking an agency to rank free website audit tools — including its own — is a bit like asking a barber if you need a haircut. So let's put the bias on the table: one of the tools below is ours. We'll tell you exactly where the others beat it, because honestly, a comparison that declares its own product the winner in every category isn't a comparison — it's an ad.

What follows is how these tools actually differ, what each is genuinely best at, and how to pick one in the thirty seconds you were probably planning to spend on this decision anyway.

The short version

• Most thorough checklist: SEOmator — it advertises 172 on-page checks, far more than anyone else here.
• Best for AI-search visibility: Auditsky or WordLift — both focus on how ChatGPT, Gemini and AI Overviews see your site.
• Best for conversion & UX opinions: WebsiteAuditAI or Roastd — punchy, CRO-flavoured feedback.
• Best if you want real Google data plus a human to fix it: ours — real Lighthouse and Core Web Vitals in the report, and an agency behind the button if you want the fixes done.

SEOmator

SEOmator's free audit runs what it describes as 172 checks across 16 categories — technical SEO, Core Web Vitals, even AI visibility — in about 30 seconds, with a PDF export and no signup. If raw check-count is what you want, this is the deepest free scan in the list, and we'll say that plainly even though it makes our "30+ checks" look modest. The trade-off is the classic one: 172 findings is a lot of findings, and unless you already speak SEO, working out which five actually matter is on you.

Roastd

Roastd audits a site in about 60 seconds against 50+ SEO, performance, UX and conversion factors, free with no signup. The personality is in the name — it leans into blunt, opinionated feedback rather than neutral checklists. Good if you want a kick; less good if you need the technical detail underneath the roast.

WebsiteAuditAI

WebsiteAuditAI positions itself around AI-powered CRO and UX analysis — less "is your meta description the right length," more "why isn't this page converting." If your traffic is fine but your enquiries aren't, that lens is genuinely useful. For technical SEO depth, you'd pair it with something else on this list.

Auditsky

Auditsky checks around 100 signals with a twist the others mostly lack: it evaluates how your site is seen across Gemini, ChatGPT and Google — the "will AI assistants recommend me" question that didn't exist three years ago. If AI-search visibility is your worry, start here or with WordLift's agentic-readiness audit.

SEOptimer

The veteran of the category. SEOptimer's free audit and reporting tool has been around long enough to be many agencies' white-label backbone, and its reports are polished and client-friendly. It's the safe, established choice — with the trade-off that it predates the AI-analysis wave the newer tools are built on.

Ours — the Alternate free website audit

Bias disclosed again: this one is our tool. Here's the honest pitch. It shows your overall score, category bars and summary instantly — no signup to see the number — and the performance data isn't an estimate: the report pulls real Google Lighthouse scores and Core Web Vitals for your live page. The full report (30+ pass/warn/fail checks, detected tech stack, prioritised fixes, PDF) unlocks with your email, and if you score well there's an embeddable badge to show it off.

Where the others beat us: SEOmator runs far more individual checks, and Auditsky goes deeper on multi-AI visibility. Where we think we win: the numbers are Google's own rather than a proprietary estimate, and there's an actual team behind the tool — so when the audit finds problems, "fix this for me" is a free call away rather than a documentation link. Most audit tools end at the diagnosis; ours is the front door of an agency that treats the diagnosis as a to-do list.

How to choose in 30 seconds

• Want the longest checklist? SEOmator.
• Worried about ChatGPT and AI Overviews? Auditsky or WordLift.
• Traffic fine, conversions poor? WebsiteAuditAI or Roastd.
• Want real Lighthouse data and the option of humans fixing what's found? Run ours.

Honestly, they're all free and they all take under a minute — running two and comparing the findings is a legitimate strategy. Issues that show up in both reports are the ones to fix first. If you're not sure what to do with the results, our 15-minute audit checklist covers the fixes anyone can make, and the Search Console routine tells you whether they worked.