Validator · Validation

LLMs.txt Validator

Ensure strict compliance with the llms.txt specification.

Validate your llms.txt file line-by-line against the llmstxt.org spec.

InputURL or pasteOutputPass / errors
Validator
Free ToolNo signup
Enter the full URL to your llms.txt file (e.g., https://example.com/llms.txt)
Free, no signup required. Run as many checks as you need.
What you get

Check Against Official Specification

  • 01
    Line-by-line error detection
  • 02
    Structural analysis and warnings
  • 03
    Check H1/H2 hierarchy
  • 04
    Verify file list format
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LLMs.txt Validator - Free AI Content Format Checker | Geordy