TOML Editor & Validator Online

Free online TOML editor and validator. Parse TOML, validate syntax, and convert between TOML and JSON.

Mode:

TOML Input

JSON Output

About TOML Editor

TOML (Tom's Obvious, Minimal Language) is a configuration file format that is easy to read and write. Our TOML editor allows you to parse, validate, and convert TOML to JSON and vice versa with full syntax error reporting.

Features

Parse TOML and validate syntax with line number error reporting
Convert TOML to JSON format for easy processing
Convert JSON to TOML for configuration files
Support for sections, arrays, strings, numbers, booleans, and null values

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How to Use TOML Editor

Paste or upload your input data into the TOML Editor input area
Select the desired output format or conversion options
Click Convert to transform your data instantly
Copy the converted result or download the output file

Common Use Cases

Converting TOML config files to JSON for processing
Transforming JSON data to TOML for Rust projects
Editing and validating TOML configuration files
Converting between TOML, JSON, and YAML formats

Frequently Asked Questions

Is TOML Editor free to use?

Yes, TOML Editor is completely free with no signup required. You can use it as many times as you need.

Is my data safe when using TOML Editor?

Absolutely. All processing happens directly in your browser. Your data is never sent to any server or stored anywhere.

What formats does TOML Editor support?

TOML Editor supports the formats described above. Simply paste your input data and the tool will handle the conversion automatically.

Can I convert large files?

Yes, since all processing happens in your browser, you can convert files of any reasonable size. Very large files may take a moment to process.

Will the conversion preserve my data accurately?

Yes, the conversion is lossless and preserves all data accurately. The tool handles edge cases and special characters properly.