Your files stay on your device

TOML formatter, validator, converter

Check TOML with positioned errors, reformat it, or walk it to and from JSON through the shared interchange model: dates keep their TOML shapes, integers stay exact past 2^53, nulls drop with a count, every loss in the report.
ValidateFormatTOML → JSONJSON → TOMLCopyDownloadNothing in yet

Paste, drop, or type to begin. Everything stays on this device.

smol-toml grammar, date/time kinds, no-null policy

Next door in Config

- YAML (/config/yaml)
- JSON Converter (/json/convert)
- .env editor (/config/env)
All config tools (/config)

Canonical HTML: https://nutter.tools/config/toml
Markdown version: https://nutter.tools/config/toml/index.md
Plain-text version: https://nutter.tools/config/toml/index.txt
Agent index: https://nutter.tools/llms.txt