Free · Open Source · MIT License · No Subscription

An AI Website Audit Tool That Runs the Whole Audit From Your Terminal

Stop stitching together five free tools. The AI Website Audit CLI automates SEO, content, UX, accessibility, trust, and performance checks in one command — then writes you an AI action plan grounded in real evidence.

Try the AI Website Audit CLI now

If Auditing Your Site Feels Like a Part-Time Job, This One's for You

Let's be honest: nobody opens a spreadsheet at 9pm excited to check meta descriptions. But that's what a real website audit used to look like. You'd crawl with one tool, check broken links with another, eyeball headings manually, and then pay a consultant to tell you what it all means. It's slow, it's expensive, and half the results don't even tell you what to fix first.

That's exactly the pain this project was built to kill. I'm not going to pretend there aren't good paid tools out there — there are. But there's a huge gap between "free but gutless" and "powerful but $200/month," and an automated AI website audit tool should never force you to pick a side.

What Is the AI Website Audit CLI?

The AI Website Audit CLI is an open-source Python tool built by Tools2U that turns any public URL into a structured audit package. Point it at a site and you get four things:

  1. Extraction JSON — every fact it found on the page: titles, meta descriptions, headings, links, images, schema types, tech hints like WordPress or Next.js.
  2. Deterministic audit JSON — transparent, rule-based checks and scores across seven areas. No vibes, no hallucinated numbers.
  3. A Markdown (or HTML) report — a prioritized improvement plan, generated locally or with AI.
  4. Optional AI strategy report — powered by OpenAI's Responses API, written strictly from the saved evidence so it doesn't invent problems.

The design philosophy is deliberately boring, and I mean that as a compliment: facts first, rules second, AI last. The extraction and scoring run 100% on your machine — nothing leaves it unless you explicitly ask for the AI report. That's a privacy story most commercial audit SaaS can't match.

Key Features, With Receipts

Anyone can slap "AI-powered" on a landing page. Here's what this automated AI website audit tool actually does, with concrete examples:

Deterministic scoring you can reproduce

Run the audit twice and you get the same scores. That matters more than it sounds, because it means you can track your site's progress over time and trust the delta. A real run on a typical marketing site looks like this:

84Overall
86SEO
91Content
82UX & Conversion
88Accessibility
76Trust
85Performance

Each score comes with rule-based findings, severity levels, quick wins, and risk flags — so an 84/100 tells you why, not just what.

Deep extraction, not just a homepage glance

It grabs H1/H2/H3 structure, internal vs external links, broken/empty/JavaScript links, missing alt text, lazy-loaded images without dimensions, CTA detection, Open Graph and Twitter card tags, JSON-LD schema types, word count, text-to-HTML ratio, and privacy signals like cookie banners and pricing pages. There's even an optional same-domain crawl for multi-page checks like duplicate titles and meta descriptions.

An AI report that can't just make stuff up

Here's the part I genuinely like: the AI layer gets the extracted facts and deterministic scores, plus strict system instructions to avoid hallucinated claims. You get a developer implementation checklist and prioritized actions — e.g. "fix the 14 images missing alt text on /pricing before touching anything else" — instead of generic advice ChatGPT would give you about any website ever.

Outputs for every workflow

Markdown for your docs, a standalone HTML report you can send to clients, and JSON for your CI pipeline. If you want to build your own checks, the MIT license means you can fork it and add custom rules. Try doing that with a closed SaaS.

How It Compares to Screaming Frog and Sitebulb

I've used both of the big names, and honestly? They're good. Screaming Frog's crawl depth is legendary, and Sitebulb's visualizations are the prettiest in the business. But here's the thing neither of them does:

CapabilityAI Website Audit CLIScreaming FrogSitebulb
PriceFree (MIT)£149+/yr$15–$95/mo
Open sourceYesNoNo
AI strategy reportYes (gpt-5.5)NoNo
URL capNone500 in free tierVaries by plan
Runs headless / in CIYesLimitedNo
Deterministic scoringYes, 7 areasPartialYes

Lighthouse deserves a mention too — it's free and excellent, but it analyzes a single page in a browser context. It won't crawl your internal links or produce an SEO-specific action plan, which is where this CLI fills the gap.

If you want the deep-dive on exactly where the CLI wins and loses against these two, the full 2026 SEO audit tool showdown on Notion walks through every category. Spoiler: the CLI wins on price, transparency, and AI, and loses on pure crawl scale — for now.

Quick Start: Your First Automated SEO Audit in 3 Minutes

No dashboard, no onboarding flow, no credit card. You need Python and a terminal. That's it.

pip install ai-website-audit

# Run a fully local audit (no API key needed)
ai-website-audit inspect https://yoursite.com --html

# Add the AI strategy report (needs an OpenAI key in .env)
ai-website-audit audit https://yoursite.com --language en --html

Your output lands in reports/ — an HTML report you can open in a browser, Markdown for your notes, and JSON if you want to automate the whole thing. The inspect command is free and local; the AI report is optional and uses OpenAI's Responses API with gpt-5.5 by default. Set OPENAI_STORE_RESPONSES=false (the default) and even your AI run stays privacy-first.

For a quick reference of every flag and option, there's a community CLI cheat-sheet gist, and if you'd rather see results before installing anything, the interactive demo on Vercel shows sample audit output live.

Who Actually Gets Value From This Tool

And if you want to understand the philosophy and roadmap in more depth, the launch write-up on Dev.to covers how the whole thing is built and where it's headed.

Frequently Asked Questions

What's the best free AI website audit tool for developers?

If you want a free AI website audit tool that's also open source, the AI Website Audit CLI is hard to beat: deterministic scoring across seven areas, full extraction, and an optional AI report — all MIT-licensed and free forever. The tradeoff is that it's a CLI, so you trade a dashboard for terminal speed and total control.

How do I run an automated SEO audit without paying for a subscription?

Install the CLI with pip install ai-website-audit and run ai-website-audit inspect https://yoursite.com --html. The extraction and scoring are fully local and free. If you want the AI-generated improvement plan, add an OpenAI API key and run ai-website-audit audit https://yoursite.com — you only pay OpenAI's per-token usage, which for a single page is usually pennies.

Is an AI SEO audit CLI actually reliable, or is it just ChatGPT with a wrapper?

Fair question, because most "AI SEO audit" products are exactly that. This one is different by design: the deterministic checks and scores come from real rules running on extracted HTML — reproducible, inspectable, testable. The AI layer is last, and it's grounded in the saved evidence with strict anti-hallucination instructions. You can read the raw extraction JSON yourself and see exactly what the AI was told.

Can I use this AI website audit tool for client work as an agency?

Yes — that's one of its best use cases. It's MIT-licensed, so you can use it for unlimited client audits, modify it, or embed it in your own stack. The standalone HTML report is client-ready, and since everything runs locally you never have to worry about client data sitting in a third-party SaaS.

Does the AI report require a paid OpenAI plan?

The deterministic audit doesn't need OpenAI at all — no key required. For the AI strategy report you'll need an OpenAI API key with billing enabled, but you control the model (gpt-5.4-mini for cheap runs), the max output tokens, and even whether responses are stored. Privacy-first is the default, not an upsell.

Your Site's Next SEO Audit Should Take Minutes, Not a Weekend

You've read the features, seen the scores, and checked the competition. The only thing left is to run your first automated AI website audit — it's free, it's local, and it tells you exactly what to fix first.

Run your free AI website audit

Open source, MIT-licensed, and community-driven — star it on GitHub if it saves you a weekend.

Ready to see what an AI website audit tool should feel like? Stop tab-hopping between five free tools and one command-line audit.

Get the AI Website Audit CLI