TOML Viewer & Formatter
Validate, format, and inspect TOML configuration files directly in your browser with tree view, copy, and download support.
Use this free TOML formatter and validator to clean, inspect, and validate TOML configuration files in your browser. Paste TOML source or open a local file, then format, sort keys, and toggle comment preservation. The tree view maps tables, arrays, and scalar values so you can navigate large configs quickly. All processing is browser-only with no backend uploads. Useful for developers managing Rust Cargo.toml, Hugo config, Python pyproject.toml, and other TOML-based configuration files.