How to make your website visible in AI: ChatGPT & Google check

How to tell whether ChatGPT, Perplexity and Google AI can read your website and name it as a source: 5 testable steps, no promises.

Key takeaways

How can I tell whether AI search systems can read my website?

In short: AI crawlers are allowed to fetch the page, the key statements sit in the HTML without JavaScript, the page is indexed by Google and every important page answers a concrete question. You can run this quick test without tools:

1. Open robots.txt (yourdomain.com/robots.txt): OAI-SearchBot, PerplexityBot and Googlebot must not be blocked, including in your CDN bot protection.
2. Open the page source (Ctrl+U): are your offer and your answers there as text?
3. Check the Google index: a search for site:yourdomain.com shows your important pages.
4. Allow snippets: no nosnippet and no max-snippet:0 on pages that should appear as a source. Google names indexed, snippet-eligible pages as the requirement for links in AI Overviews.
5. Prompt test: ask 3 of your clients' questions logged out in ChatGPT and Perplexity and note which sources are named.

The five steps below explain each point in more detail.

Why your website is missing from AI answers

AI search systems do not invent their sources — they cite pages they can crawl, understand and attribute. The most common blockers we see in audits: AI bots shut out in robots.txt or by bot protection; content that only exists after JavaScript rendering; pages without a clear answer to a concrete question; no external mentions.

Good AI visibility starts with solid SEO. It is not separate magic — it extends the same foundations.

Step 1 — let AI crawlers in (robots.txt)

Check whether GPTBot, OAI-SearchBot, ClaudeBot, PerplexityBot and Google-Extended can fetch your site — in robots.txt and in your CDN bot protection. One distinction matters: OAI-SearchBot controls visibility in ChatGPT search results, while GPTBot concerns model training and is a separate business decision.

On our own website these bots are explicitly allowed — a conscious decision documented right in the robots.txt.

How does ChatGPT find my website?

For search in ChatGPT, OpenAI uses the OAI-SearchBot crawler. If it is blocked in robots.txt or by bot protection, ChatGPT cannot link your pages as a source in search results. GPTBot is independent of that: it collects content for model training, and according to OpenAI blocking GPTBot does not remove your website from search. After a robots.txt change, OpenAI says it takes about 24 hours for its systems to adjust.

At Perplexity the equivalent crawler is PerplexityBot; according to Perplexity it is used to surface and link websites in its search results.

Sources: OpenAI: overview of OpenAI crawlers, Perplexity: Perplexity crawlers.

Step 2 — answers in HTML, not behind JavaScript

Many AI crawlers cannot read what only appears after JavaScript runs. The simplest test: open the page source (Ctrl+U) and check whether your key statements exist as text.

That is why our pages are prerendered: headings, answers and FAQ sit in raw HTML before any script executes.

Step 3 — one question, one clear answer, clean structure

AI systems cite passages, not whole websites. Every important page needs: a recognisable question (H1/H2), the answer in the first sentences rather than after long intros, structured data that describes the visible content (no schema theatre), and unambiguous facts about company, location and service.

How should website copy be structured so AI systems cite it as a source?

There are no proven rules that guarantee citations. In its documentation on AI features (last updated December 2025), Google says there are no additional requirements and no special optimizations needed to appear in AI Overviews or AI Mode; normal SEO best practices apply. The page must be indexed and eligible to be shown with a snippet. That leads to rules you can check:

• One question per section as the heading, with the answer in the first one or two sentences below it.
• Concrete, verifiable facts instead of marketing language: what, for whom, where and at what scope.
• Consistent terms, so company, service and location are unambiguous.
• Important content as text, not only inside images, videos or sliders.
• Structured data only for what is visible on the page.

According to the same documentation, Google does not require a special AI text file or special schema. Source: Google Search Central: AI features and your website.

Step 4 — external sources: directories and mentions

Review the answers for your own industry and note whether models cite directories, media, industry profiles or other external sources. Then check whether your company has credible mentions beyond its own domain. That is a common gap even when the website itself is technically sound.

Step 5 — measure instead of guessing

Define 3-5 prompts your ideal clients would ask and check regularly (logged out) whether your site gets cited. Note the prompt, date and cited sources. Record a zero point even when the brand is never mentioned; it is a baseline for comparison after 2-4 weeks, not a result to publish.

The fastest start: our free AI visibility check tests your website's technical basics automatically. For a prioritised review of technical, content and external signals, see our SEO and AI visibility service.

FAQ

Do I need an llms.txt to be visible in AI?

No, it is not required. It does no harm and we use one ourselves, but it is not an official standard, and Google says in its documentation that no special AI text files are needed. Accessible crawler paths, answers in raw HTML and external mentions matter more.

How fast will my website get cited in AI answers?

After technical fixes, indexing and pickup typically take weeks. There are no guarantees — measure the same 3-5 prompts every 2-4 weeks and judge the trend.

Why do competitors get cited and I don't?

Models often support recommendations with directories, media and industry profiles. Alongside technical accessibility, check whether your company has credible external mentions.

Is my website being cited by AI? How do I check?

Ask 3-5 questions your clients would ask, logged out, in ChatGPT and Perplexity and note the date, the question and the sources named. Repeat the same questions every 2-4 weeks; the trend tells you more than a single test.

Is a plugin or overlay enough?

No. Visibility comes from accessible, answering content and external signals, not from a widget.