Format guide

TOML

Tom's Obvious Minimal Language

TOML is a config format designed by GitHub co-founder Tom Preston-Werner in 2013 as a more readable alternative to YAML and INI. Its appeal is unambiguous syntax — TOML files always parse the same way regardless of indentation. Used by Cargo (Rust), pyproject.toml (Python packaging), pnpm-workspace, Hugo, Netlify, and many others. v1.0.0 spec finalized in 2021.

How to open a TOML file

Any text editor. Most modern IDEs ship TOML syntax highlighting; VS Code's Even Better TOML extension adds validation.

Primary use

Application/package config in Rust, modern Python, and static site generators.

Convert other formats to TOML

JSON → TOML
YAML → TOML

Convert TOML to other formats

TOML → JSON
TOML → YAML

Looking for something else? Browse the full list of 192 converters.