TOML Validator & Formatter
Validate and format TOML documents with consistent local-only processing
Validate TOML syntax, format the document, or convert it to JSON.
Validate and Normalize TOML
TOML is a configuration format with a predictable structure and a surprisingly strong opinion about tables. This tool validates syntax, formats documents, and converts parsed content to JSON for inspection.
Typical Uses
- Check package and build configuration files
- Normalize TOML formatting before committing
- Inspect TOML data as JSON when debugging
Frequently Asked Questions
What does the TOML validator check?
It parses the document and confirms the TOML syntax is valid. If parsing fails, you get a location-aware error message when the parser provides it.
What does formatting do?
Formatting normalizes the TOML structure into a stable output with predictable spacing, section ordering, and consistent quoting.
Can it convert TOML to JSON?
Yes. The page includes a conversion path to JSON so you can inspect the parsed structure in a more familiar shape.
Does it preserve comments?
No. This formatter prioritizes clean output over comment preservation. If you need comment round-tripping, TOML is not your friend today.