TOML

TOML configuration file

TOML (Tom's Obvious, Minimal Language) is a configuration file format designed to be easy to read and map to hash tables.

What is TOML configuration file?

Created by Tom Preston-Werner in 2013, TOML is designed specifically for configuration files. Its syntax is minimal, making it highly readable for humans while remaining unambiguous for machines. It is widely used in language package managers like Cargo (Rust) and Pip (Python) for dependency management and project configuration.

Advantages

Human-readable syntax
Supports native data types like dates and times
Unambiguous parsing
Better structure for nested configurations compared to INI

Limitations

Not ideal for massive datasets
More verbose than YAML for some complex structures

How to open TOML configuration file files

VS Code Notepad++ Sublime Text IntelliJ IDEA ConvertX

Common use cases

Project dependency manifests
Application settings and configurations
System service definitions
Static site generator configurations

TOML converters

JSON → TOML

TOML → JSON

Explore other formats

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Frequently asked questions

TOML is generally considered more readable for configuration files, while JSON is better suited for data exchange between web services.

Yes, you can use the ConvertX json-to-toml or toml-to-json tools to seamlessly switch between these formats.

Yes, TOML keys and string values are case-sensitive.