AfterLaunch checks whether your site publishes an llms.txt file, the plain-text map AI crawlers look for, and tells you what a good one contains.
Fetching the file the way an AI crawler does.
AfterLaunch requests /llms.txt on the site you enter, the same way an AI crawler would, and reports whether the file exists, how large it is, and a one-line verdict on what that means for you.
The full result, unlocked with an email, lists what a strong llms.txt contains, section by section, so you can write or improve yours in one sitting.
llms.txt is a plain-text file at the root of your site that gives language models a curated map: what the product is, who it serves, and which pages carry the substance. It is an emerging convention rather than an enforced standard, and adoption among AI systems is still uneven. The honest case for it: it costs minutes, it cannot hurt, and it is one more clean, machine-readable statement of what you are, on a web where most sites make machines guess.
If the check finds no file, the free llms.txt generator will assemble one from a short description of your product.
No. It is an emerging convention, and AI systems vary in whether they read it. It is a low-effort, zero-risk addition rather than a requirement. The layers that matter more are crawlability, readable content, and how the rest of the web describes you.
At the root of your domain, at /llms.txt, served as plain text. The checker requests exactly that path.
A short factual description of the product, who it is for, and links to the pages that carry real substance: docs, pricing, comparisons. The full result breaks this down section by section, and the generator writes it for you.
Nothing. The present-or-missing verdict is free with no signup. The section-by-section recommendations unlock with an email address. No card, no trial starts.
Drop the llms.txt checker into your article or newsletter and your readers can run the check without leaving the page. One iframe, no script, no account. It stays free and it links each result back to the full breakdown.
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loading="lazy" title="Free checker by AfterLaunch"></iframe>AfterLaunch is an always-on agentic growth platform for post-launch SaaS founders, launching soon. It starts with a free Growth Snapshot that scores how findable your product is across seven dimensions, measured against real competitors, then keeps working on what it finds.