Free tools

Free LLMS.txt Generator & Validator

Create a structured llms.txt with product, docs, policies, and key URLs and validate formatting before publish.

Copy-paste outputs

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Tool 01

LLMS.txt Generator + Validator

Create and validate llms.txt files for AI crawler and GEO guidance.

LLMS.txt Generator + Validator

Build llms.txt files for AI crawler guidance and validate structure before publish.

Site name

Homepage URL

Summary

Product URLs (one per line)

Documentation URLs (one per line)

Policy URLs (one per line)

Generated llms.txt

# Brand Armor AI

> AI search visibility platform for monitoring recommendation share, citations, sentiment, competitors, and content actions.

## Site
- https://brandarmor.ai

## Products
- https://brandarmor.ai/features
- https://brandarmor.ai/pricing

## Documentation
- https://brandarmor.ai/docs
- https://brandarmor.ai/llms-full.txt

## Policies
- https://brandarmor.ai/privacy-policy
- https://brandarmor.ai/terms

Validator

Paste an existing llms.txt. If empty, the generated text above is validated.

{
  "errors": [],
  "warnings": [],
  "urlCount": 7
}

How it works

LLMS.txt Generator + Validator: methodology and worked example

How this tool computes its result

The generator assembles an llms.txt from a site name (rendered as an H1), a summary (rendered as a blockquote), and three optional newline-separated URL lists — Products, Documentation, Policies — each rendered as its own `##` section and skipped entirely if empty. The validator checks three things on whatever text is in its own textarea (or, if empty, the generated output above): line 1 must start with `# ` (else error), at least one `https?://` URL must be present and each matched URL must parse successfully via `new URL()` with an http/https protocol (else error per bad URL), and it looks for exact-string `## documentation` / `## policies` section headers (case-insensitive) to emit soft warnings if missing.

Worked example

With the default inputs (site name "Brand Armor AI", homepage `https://brandarmor.ai`, one product URL, two docs URLs, two policy URLs), the generated file starts with `# Brand Armor AI`, then a blockquote summary, then `## Site`, `## Products`, `## Documentation`, `## Policies` sections with bulleted URLs. Validating it with an empty validator textarea (which falls back to validating the generated text itself) returns `{"errors":[],"warnings":[],"urlCount":7}` since both required section headers are present and every URL is absolute https.

When not to use this tool

The validator only checks structure and URL syntax, not reachability — a 404 or dead link still passes because `new URL()` only confirms the string is a well-formed absolute URL, it never fetches it.

Common mistakes

- Renaming the "Documentation" or "Policies" headers to something else (e.g. "## Docs") — the validator does an exact-string match on `## documentation` / `## policies`, so a renamed section triggers a false "consider adding" warning even though equivalent content exists.
- Putting anything before the H1 line (a blank line, a comment) — the validator only inspects `lines[0]`, so a leading blank line fails the "first line should be an H1" check even if the H1 is present on line 2.
- Using relative paths like `/docs` instead of absolute URLs in the Products/Documentation/Policies fields — `new URL()` either throws or the path is never counted as one of the matched absolute URLs.

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