TOML Validator
Validate TOML configuration files
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What is TOML?
TOML (Tom's Obvious, Minimal Language) is a configuration file format designed to be easy to read due to its clear semantics. It's widely used in Rust (Cargo.toml), Python (pyproject.toml), and many other modern applications.
This validator checks your TOML syntax in real-time, catching common errors like unclosed brackets, missing keys, and unterminated strings.
TOML Syntax Basics
Key-Value Pairs
key = "value" — Basic string assignment with quoted values.
Sections (Tables)
[section] — Groups related configuration under a named header.
Inline Tables
dep = { version = "1.0" } — Compact objects on a single line.
Common Use Cases
| File | Purpose |
|---|---|
| Cargo.toml | Rust package manifest |
| pyproject.toml | Python project config |
| config.toml | General app configuration |
FAQ
How is TOML different from YAML?
TOML uses explicit key = value syntax while YAML relies on indentation. TOML is less prone to whitespace errors.