Is your site visible to AI search?
ChatGPT, Gemini, Claude and Perplexity now answer questions your customers used to type into Google. These 12 free tools check whether they can crawl, read and cite you — and tell you exactly what to fix.
Free · No sign-up · Reads the raw HTML a crawler sees
AI search visibility
Whether AI engines can reach your content, parse it and cite it.
- AI Visibility CheckerAI search engines only cite what they can crawl and parse. This checks your page against the signals that decide whether you show up in AI answers.
- Schema Markup CheckerPaste a URL to see every schema entity on the page, which required properties are missing, and which rich results you actually qualify for.
- Sitemap CheckerFinds your sitemap the way a crawler would — robots.txt first, then the common locations — then validates what it finds.
On-page checks
The individual signals — titles, headings, images, canonicals, redirects, share cards.
- SEO Title Length CheckerGoogle truncates titles by pixel width, not character count. This measures both, so a title full of capitals does not sneak past a character-only check.
- Meta Description Length CheckerMeta descriptions are not a ranking factor — Google has said so repeatedly. They decide click-through, which is why length and clarity still matter.
- Google SERP PreviewEnter a URL to see the snippet Google will show, on both desktop and mobile, with the truncation points marked.
- H1 Tag CheckerTwo H1 tags on one page is one of the most common on-page mistakes, and it is invisible until something checks for it.
- Heading Structure CheckerA clean H1→H6 outline is how screen readers navigate and how AI engines decide what a passage is about. Skipped levels break both.
- Alt Text CheckerAn empty alt="" is the correct markup for a decorative image. A missing alt attribute is a defect. Most checkers conflate the two — this one does not.
- Canonical URL CheckerConflicting canonical signals get weighted against each other and the winner is unpredictable. This shows every signal side by side.
- Redirect CheckerFollows every hop manually and reports the whole chain — most tools show you only where you landed.
- OG Image Checker & Twitter Card ValidatorThis has no effect on rankings. It decides whether a shared link renders as a full-width image or a bare grey text row.
Guides
Where a score is not enough: the cases these checks get wrong, and how to tell.
- When a checker says “all AI crawlers allowed”, it might mean “we could not tell”RFC 9309 says an unreachable robots.txt means disallow everything — the opposite of a 404. Most AI visibility checkers get this backwards. Here is how to tell.
- Five questions to ask an AI visibility tool before you trust its scoreAI visibility tools disagree because they measure different things. Five questions that separate a real measurement from a plausible-looking number.
Why AI visibility is its own problem
Google ranks pages. AI engines quote passages. A page can rank on the first result page and still never be cited, because the engine could not crawl it, could not parse it, or could not find a self-contained passage that answered the question.
The most common cause is the least interesting one: a robots.txt written years ago to keep scrapers out now blocks the crawlers that feed ChatGPT search. It takes one line to fix and nothing tells you it is happening.
Frequently asked questions
Why would AI search engines not see my site?
Three usual causes: robots.txt blocks the AI crawlers, your content renders client-side so crawlers see an empty page, or there is no structured data telling engines what the page is about. All three are checkable in under a minute.
Are these tools really free?
Yes, and there is no sign-up. Each tool fetches the public HTML of the URL you enter and analyses it in the response. Nothing is stored.
Do I need to install anything?
No. Everything runs against the public version of your page — the same thing a crawler would fetch.
Is AI visibility different from SEO?
It overlaps but is not the same. Google ranks pages; AI engines quote passages. That makes machine-readable structure matter more than it does for classic rankings.