AI Search Optimization

Want to be Cited in AI Search? 5 Technical Website Checkpoints

OLRim Research Team

I have summarized 5 technical items to check to ensure AI can read and cite your site, explained simply enough for beginners to follow.

5 Technical Checks — Make your site easy for AI to cite

One-line answer: To be cited in AI search, AI must first be able to enter your site (access), read it quickly (speed/rendering), understand the structure (HTML structure), and know the representative address (canonical URL/sitemap). You can identify most technical issues by checking the following 5 items in order.

Why does a technical check come first?

No matter how well you write, you cannot be cited if AI cannot read your content. Before generating an answer, AI search services send out crawlers (programs that automatically visit webpages to read content) or utilize data from search engines. If you are blocked at this stage, your content won't even get a chance to be evaluated for quality.

To use a metaphor, it is like preparing delicious food but having the shop door locked or no sign outside.

Check 1. Can AI crawlers get in? (robots.txt)

robots.txt is a file you can view by adding /robots.txt to the end of your site address. It is a notice that states "which robots are allowed to enter and which are not."

Major AI-related crawler names are as follows. (Names are based on each company's official documentation and may change, so check periodically.)

Crawler NameOperatorPurpose
GPTBotOpenAICollection for model training
OAI-SearchBotOpenAIFor ChatGPT search results
ChatGPT-UserOpenAIVisits pages upon user request
ClaudeBotAnthropicCollection
PerplexityBotPerplexityFor search results
Google-ExtendedGoogleControls use for Gemini training
GooglebotGoogleGeneral search (including AI Overviews)

If you want to be exposed in AI search, you must at least not block search crawlers. An example of allowing them is as follows:

User-agent: OAI-SearchBot
Allow: /

User-agent: PerplexityBot
Allow: /

User-agent: *
Disallow: /admin/

Sitemap: https://example.com/sitemap.xml

Common Mistakes

  • Sometimes security plugins or hosting providers automatically block all unfamiliar robots. Even if robots.txt is open, they might be blocked by a firewall, so check your server access logs to see if those robots are being rejected (403 error).
  • If a single line Disallow: / remains, the entire site is blocked. This is often left in by mistake during development.

Check 2. Is content visible without rendering the screen? (Rendering)

Many modern sites use JavaScript (programs that make the screen interactive in a browser) to fill in content later. While browsers used by humans show the text after this process, some AI crawlers only read the initial document received without executing JavaScript.

Simple way to check

  1. Open your page in Chrome and right-click → select "View Page Source."
  2. Use Ctrl + F to find a key sentence from the main text.
  3. If that sentence is not in the source, some AIs may see that post as a blank page.

Direction for solution

  • Use SSR (Server-Side Rendering, where the server creates and sends the finished text) or static HTML generation.
  • Ensure important information such as titles, summaries, body text, prices, and contact info is included in the initial document.
  • Do not hide core information only inside tabs that require clicking "Read More" to open.

Check 3. Is it fast enough? (Response Speed)

When AI generates an answer, it needs to read multiple pages in a short amount of time. Pages with slow responses may be skipped without waiting. (Exact time limits for each service are not public.)

Metrics to check include:

  • TTFB (Time to First Byte, the time it takes for the server to start responding): Shorter is better.
  • Total page size: Too many large images or unnecessary programs will slow it down.

Check Tool: Enter your address into Google PageSpeed Insights (pagespeed.web.dev) for free information on speed and improvement methods.

Easy improvement methods

  • Convert images to lightweight formats like WebP and reduce them to fit the screen size.
  • Clean up unused plugins or external widgets.
  • Use a CDN (a service that keeps copies in various locations worldwide to send data from the nearest one).

Check 4. Is the skeleton of the post clear? (Semantic HTML)

Semantic HTML is a way of marking the role of each part, such as "this part is the title, this part is the body, this part is the menu." Even if text looks equally bold to human eyes, machines judge its role by looking at tags.

TagRoleChecklist
<h1>Representative title of the page1 per page
<h2>, <h3>SubheadingsDon't skip levels (no h4 immediately after h2)
<main>Core body areaDistinguish from menu/footer
<article>A single independent postBlog posts, news, etc.
<table>TableUse actual tables instead of images of tables

Common Mistakes

  • Overusing title tags just to increase font size, or conversely, treating titles only as regular bold text.
  • Uploading price lists or comparison charts only as images. AI might miss text inside images, so it's better to use actual tables.
  • Leaving alt text (descriptions read when images cannot be seen) blank for images.

Attaching a unique address fragment (anchor) to each subheading also helps AI or search engines point directly to a specific section.

Check 5. Is a representative address set? (Canonical URLs and Sitemaps)

It is more common than you think for the same post to open via multiple addresses.

  • http:// and https://
  • Addresses with and without www
  • Addresses with tracking values like ?utm_source=... attached at the end

In these cases, insert a canonical URL (a marker saying "this is the official address of this post") into the page.

<link rel="canonical" href="https://example.com/blog/geo-guide" />

Check your sitemap (sitemap.xml, a list of all pages on the site) as well.

  • Does it only contain addresses that actually open? (Ensure deleted pages aren't left behind)
  • Does the modification date (lastmod) match the actual time of modification?
  • Is the sitemap location written in robots.txt?

Self-Diagnosis Checklist at a Glance

No.CheckpointHow to checkResult
1Allow AI search crawlersCheck /robots.txt☐
2Check for robot blocks in firewallCheck hosting access logs☐
3Body text exists in page sourceView page source☐
4Speed checkPageSpeed Insights☐
5Title tag orderDeveloper tools or diagnosis tools☐
6Table/Image alt textView page source☐
7Canonical URL indicationSearch for 'canonical' in page source☐
8Sitemap up to dateCheck /sitemap.xml☐

Once the technical check is complete

Technical items are the stage of creating a "readable state." The next step is to help AI understand the content accurately.

  • [Role and Application Method of Structured Data (JSON-LD)](/blog/json-ld-structured-data-guide)
  • [How to Structure Site Content for Easy AI Understanding](/blog/structure-content-for-ai)

If it is difficult to check each item yourself, OLRim’s free diagnosis can automatically check most of the items above for you.

#AI Crawler
#robots.txt
#JSON-LD
#Technical Check

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