TOML to JSON Converter

Convert TOML configuration files to JSON format with syntax validation

TOML Input

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JSON Output

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Paste TOML in the input area to get started

How to Convert TOML to JSON - Step by Step Guide

Step 1

Input Your TOML Data

Let's get your TOML configuration into the converter! TOML (Tom's Obvious, Minimal Language) is a popular format for configuration files, especially in Rust projects. You have several convenient options:

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Paste directly: Copy your TOML config file content and paste it into the input editor

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Upload a file: Click "Upload" to select a .toml or Cargo.toml file from your computer

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Try the sample: Click "Sample" to load example TOML data and see how the converter works

Example: TOML Configuration Input

Here's what a typical TOML configuration file looks like:

# Application Configuration
[application]
name = "My Web App"
version = "1.0.0"
environment = "production"

[database]
host = "localhost"
port = 5432
enabled = true

[[services]]
name = "api-gateway"
port = 8080

Step 2

Automatic Conversion & Validation

The conversion happens instantly! 🎉 As soon as you input TOML, the converter automatically:

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Validates syntax: Checks for TOML syntax errors and provides helpful feedback

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Converts to JSON: Transforms TOML sections, tables, and arrays into equivalent JSON structure

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Pretty formatting: Outputs beautifully formatted JSON with proper indentation

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Syntax highlighting: Color-codes different elements for better readability

Example: Converted JSON Output

The TOML config converted to clean JSON format: ✨

{
  "application": {
    "name": "My Web App",
    "version": "1.0.0",
    "environment": "production"
  },
  "database": {
    "host": "localhost",
    "port": 5432,
    "enabled": true
  },
  "services": [
    {
      "name": "api-gateway",
      "port": 8080
    }
  ]
}

Step 3

Choose Output Format

Customize your JSON output based on your needs! 🎛️ The converter gives you control over the final format:

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Pretty format: Default beautified JSON with proper indentation (2 spaces) for readability

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Minify option: Click "Minify" to compress JSON into a single line for production or storage

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Real-time preview: See the converted JSON instantly as you type or edit TOML

Step 4

Export Your JSON

Get your converted JSON ready for use! 🚀 Multiple export options make integration into your workflow seamless:

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Copy to clipboard: One-click copying for quick pasting into your code editor or application

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Download as file: Save as a .json file for later use, API integration, or sharing with your team

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Validation indicator: Green checkmark confirms your JSON is valid and ready to use in any application

Frequently Asked Questions

What is TOML and why convert it to JSON?

TOML (Tom's Obvious, Minimal Language) is a configuration file format popular in Rust projects and other applications. Converting to JSON makes the data compatible with web APIs, JavaScript applications, and systems that require JSON format. JSON is more universally supported across programming languages and platforms.

Can I convert Cargo.toml files to JSON?

Yes! This converter handles Cargo.toml and any other TOML configuration files. Simply paste the content or upload your Cargo.toml file, and it will be converted to JSON format instantly. This is useful for analyzing Rust project dependencies or integrating them with other tools.

Does the converter handle nested TOML tables?

Absolutely! The converter properly handles nested tables, arrays of tables, inline tables, and all TOML data structures. TOML sections like [database.credentials] are converted to nested JSON objects, and [[services]] arrays become JSON arrays with proper structure.

What TOML data types are supported?

The converter supports all standard TOML data types including strings, integers, floats, booleans, dates/times, arrays, and tables. Each type is accurately converted to its JSON equivalent, maintaining data integrity and proper type representation.

Can I convert the JSON back to TOML?

While this tool converts TOML to JSON, you can use the JSON to YAML converter for similar configuration format conversions. The converted JSON can also be used with any JSON parser or processing tool.

Is the TOML to JSON converter free?

Yes, completely free with no limitations on file size, conversion frequency, or features. No registration required, and you can convert unlimited TOML files with full syntax validation and beautiful JSON output.

TOML to JSON Converter - Convert TOML Files to JSON Online