TOML Formatter
Beautify and format TOML configuration files
TOML Formatter is a free online tool from BrowserUtils that beautify and format toml configuration files. It runs entirely in your browser — your data never leaves your device. No account required.
How to use TOML Formatter
- 1 Paste or type your input into the editor above.
- 2 The tool processes your data instantly — right in your browser, with nothing sent to a server.
- 3 Copy the result with one click or continue editing your input.
About TOML Formatter
Free online TOML formatter and beautifier. Format TOML configuration files with proper indentation and clean structure. This tool runs entirely in your browser — your data is never sent to a server. Just paste your input, get instant results, and copy with one click. No sign-up or installation required.
TOML Formatter specs
- Runtime
- 100% client-side (browser)
- Cost
- Free — no account, no rate limits, no usage caps
- Browser support
- Chrome 90+, Firefox 88+, Safari 14+, Edge 90+
- Part of
- 299 developer tools on BrowserUtils (100% client-side)
Questions
How do I beautify a TOML config file?
Paste your TOML content into the input and the formatter will normalize spacing around equals signs, group sections clearly, and ensure consistent indentation for a clean, readable configuration file.
What TOML features does the formatter support?
The formatter handles standard TOML features including tables, inline tables, arrays, multi-line arrays, string values, numbers, booleans, and comments. Comments are preserved during formatting.
Can I format Cargo.toml or pyproject.toml with this tool?
Yes, the formatter works with any valid TOML file including Cargo.toml for Rust projects, pyproject.toml for Python, and Hugo or other static site generator config files.
What is the difference between TOML and YAML?
TOML uses explicit key = value pairs and [section] headers, making it less ambiguous than YAML. YAML relies on indentation for structure and supports more complex data types, but is more prone to subtle formatting errors.
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