Free tool · AI search
Check your llms.txt, or write one in a minute
llms.txt is a short markdown file that points AI tools to a site's most useful pages. We check yours against the format, and draft one from your homepage's links.
Free, no sign-up. We read only the public pages of the address you enter.
llms.txt
Built from the homepage's title, description and links. Edit it here, then save it as llms.txt at the root of the site.
What it checks
What we look at
- 01
The layout
A # heading with the site name, a one-line > summary, then ## sections that group the links.
- 02
The links
Enough of them to cover the pages that matter, each written as a full https:// address.
- 03
How it is served
At the root of the site, /llms.txt, as plain text or markdown rather than an HTML page.
Health
74/100
+6 points
Pages
1,284
38 rendered
Issues
184
23 fixed
Issues
Pages · since last crawl
- ErrorBroken internal links23
- ErrorCanonical to a broken page6
- WarningDuplicate titles18
- WarningSlow server response (over 1 s)41
- NoticeImages without alt text96
AI readiness in the app
Keep every client ready for AI search
The monthly AI readiness audit checks llms.txt with crawler access, readable content and structured data, and keeps the fixes in order.
- Every client project audited monthly
- llms.txt, robots.txt and markup checked together
- Fixes ranked by how much they add
FAQ ( 4 )
llms.txt checker: questions
What it reads, how it decides and what it costs.
What is llms.txt?
A proposed standard, described at llmstxt.org: a markdown file at /llms.txt that tells AI tools what a site is and which pages to read first.
Do AI engines read it?
Support varies. It's a proposal rather than a rule every engine follows, but it takes minutes to add and some AI tools and agents look for it.
Where does the file go?
At the root of the site, so it opens at https://your-site/llms.txt. Serve it as text/plain or text/markdown.
Is it free?
Free, with no sign-up: up to 20 checks a day, and an address checked in the last day is answered from our saved result.
Get started
Track this for every client
RankTwice runs these checks for every client on a schedule, with rankings and AI answers alongside, in reports with your brand.
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