AI crawler access in robots.txt critical
We check whether the site blocks GPTBot, ClaudeBot, PerplexityBot and Google-Extended.
Check whether AI can see your website
ChatGPT, Claude and other AI read sites differently from Google. We will check yours on 16 technical points and show what stops AI from citing you.
The check takes 1–3 minutes: we crawl the page and everything it depends on.
What the audit covers
AI visibility 4
Content visible without JavaScript critical
We look for text in the raw HTML: AI crawlers do not run scripts.
Crawlers get the same page as visitors
We request the page as a browser and as an AI crawler and compare the answers.
The llms.txt file
We check for /llms.txt — a short map of the site that language models read.
Reliability 1
Server response and redirects
We check that the home page answers 200 and does not hide behind a chain of redirects.
Security 1
HTTPS and SSL certificate
We check that HTTPS works, the certificate is valid and http redirects to it.
Content 7
Schema.org markup (JSON-LD)
We look for structured data that tells an AI the type and author of the content.
Meta tags and page language
We check title, description, canonical, lang and Open Graph.
Semantic page structure
We check for a single H1, a sane heading hierarchy and the main/article/header tags.
Depth and provenance of the content
We weigh the amount of text, the presence of an update date and a named author.
Text-to-markup ratio
How much of the page is real text versus markup — thin pages are hard for AI to read.
Contact details on the page
Whether an email, phone or address is visible — AI answers "how to reach them" from what is on the page.
Links to social profiles
Links to official social accounts tie the site to an entity AI already knows.
Interface 1
Image descriptions (alt)
We count the share of images without an alt attribute — without it neither AI nor a screen reader knows what is pictured.
Indexing 1
Sitemap (sitemap.xml)
We check that the sitemap exists, opens and is listed in robots.txt.
Speed 1
Response speed and page weight
We measure the response time, the size of the HTML and whether compression is enabled.
Frequently asked questions
Is my site visible to ChatGPT?
Not always: AI reads a site differently from a human and often does not see it at all. Check for free at zikilo.com — a report in a minute, no sign-up.
Why does not ChatGPT find my site?
Common reasons: the site blocks AI crawlers in robots.txt, all text loads via JavaScript (AI sees an empty page), or there is no Schema.org markup telling AI what you do.
How do I check if ChatGPT, Claude and Perplexity can read my site?
Enter your site address at zikilo.com — it runs 16 technical checks and shows what stops AI from seeing and citing you.
What is AI visibility for a website?
It is whether AI assistants (ChatGPT, Claude, Perplexity, Gemini) find and cite your site when someone asks them about your topic. Essentially, it is SEO for the AI era.
How is AI visibility different from SEO?
SEO is about rankings in Google. AI visibility is about whether your site makes it into a ChatGPT or Perplexity answer. More people ask AI instead of a search engine, so both matter.
How do I make my site visible to AI?
Allow AI crawlers in robots.txt, serve text without JavaScript, add Schema.org markup, an llms.txt file and sitemap.xml. The free check at zikilo.com shows the exact list for your site.