TOML Validator

Validate TOML syntax against the v1.0.0 specification. Detects structural errors, invalid data types, malformed table headers, and duplicate keys.

How to use

  1. Paste your TOML content into the left panel, upload a file, or click Load Example.
  2. Click Validate or press Ctrl+Enter.
  3. If valid, the right panel shows a structural summary. If invalid, the error bar displays the exact issue with context.