Vibe Checker

Did your AI actually build a good site?

You vibe-coded your site in minutes, maybe seconds. AI tools ship fast. They don't validate. Notiduck checks if your site follows industry standards, performs well under real conditions, and can be discovered by other AI agents.

What we check

Performance

Full Lighthouse audit with LCP, CLS, TBT, FCP - the metrics that affect your users and your rankings.

AI Readiness

Does your site have an llms.txt? Are your forms machine-readable? Can AI agents discover and interact with your content?

SSL & Domain Health

Valid certificate, no expiry surprises, proper domain setup. The basics your AI coding buddy probably forgot.

Core Web Vitals

Google's ranking signals. If your AI-generated site has bloated JS or unoptimized images, we will tell you.

Industry Standards

SEO basics, canonical URLs, redirect chains, accessibility tree integrity. Not fluff, the stuff that matters.

3-Location Verification

Your site checked from France, Finland, and Canada. One bad geo does not mean your site is down. We validate first.

Not a security tool

notiduck validates quality, performance, and AI discoverability. It is not a penetration testing tool. We do not scan for vulnerabilities, check for SQL injection, or test authentication systems. If you need security validation, look elsewhere. If you need to know whether your site actually works and will be found by AI agents, you are in the right place.

Why this exists

Cursor generated me a site in 10 seconds. Why do I need a check?

Because generation speed has nothing to do with quality. AI tools produce what you asked for, not what the web needs. Lighthouse scores, Core Web Vitals, llms.txt, SSL config - none of these are guaranteed. Notiduck catches what the prompt missed.

I built my site with Bolt, Lovable, or Windsurf. Does this work for me?

Yes. Every AI coding tool emits the same kind of output: HTML, CSS, JS, meta tags. Notiduck validates the result, not the tool. If your site has a URL, we can check it.

My site looks great to me. Why would it fail?

The hardest thing about vibe coding is that it looks right on your machine. Under real network conditions from different continents, with Lighthouse running the full audit suite, that is where the cracks show. Bloated bundles, missing meta tags, broken canonical URLs, CLS from AI-generated CSS that looked fine in dev.

Check your vibe

One URL. Pings from 3 continents. Full Lighthouse audit. AI readiness check. Pay only if you want to keep watching.

Validate your site