TOML validator and typed data viewer

  1. Input
  2. Result

Syntax validation with the installed smol-toml parser, not a Cargo or Python schema check. Input stays in this browser; do not paste secrets into a shared device.

Limit: 100,000 UTF-16 code units, 5,000 lines, 5,000 tree entries and 40 nesting levels. A failed validation keeps the previous report available.

Quick start

Check TOML syntax and typed paths; export JSON without rounding large integers.

  1. Paste a TOML document
  2. Run validation and inspect the data types
  3. Copy JSON or download the fixed report

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