TOML / JSON Converter

TOML与JSON互转。
TOML
JSON

Bidirectional

TOML to JSON and JSON to TOML.

Table Support

Handles TOML sections and nested objects.

Copy Result

One-click copy to clipboard.

Client-side

All processing in your browser. No data uploaded.

关于TOML / JSON Converter

The TOML to JSON Converter makes it easy to move between TOML (Tom's Obvious Minimal Language) and JSON — two formats commonly used for application configuration. TOML is the native configuration format for Rust projects (Cargo.toml), Hugo static sites, Python's pyproject.toml, and many other modern tools. Its clear, INI-inspired syntax is easy for humans to read and edit. JSON, meanwhile, is the standard format for APIs, Node.js configurations, and data exchange. Converting between them lets you inspect TOML configs as structured JSON, migrate configurations between tools that expect different formats, or programmatically process TOML data in environments that natively support JSON. The converter handles TOML sections (denoted by [section] headers), which map to nested objects in JSON, as well as key-value pairs with string, number, boolean, and array values. Going the other way, JSON to TOML renders nested JSON objects as TOML table sections, with primitive values formatted as proper TOML key-value pairs. All conversion happens locally in your browser — no data is sent to any server, so it is safe to use with private configuration files containing database URLs, API keys, and other sensitive settings.

如何使用TOML / JSON Converter

  1. Select your conversion direction using the toggle: "TOML to JSON" or "JSON to TOML".
  2. Paste your TOML configuration or JSON data into the left input panel.
  3. Click the "Convert" button to run the conversion.
  4. The result appears in the right panel. If there is a parsing error, it is shown in red in the output area.
  5. Click "Copy" to copy the converted output to your clipboard.
  6. Switch the direction toggle to convert the other way — remember to paste the appropriate format into the input panel.

常见问题

What TOML features are supported?

The converter supports basic TOML syntax: key-value pairs with string (quoted), integer, float, and boolean values; inline arrays; and section tables defined with [section] headers. Advanced TOML features like array of tables ([[array]]), dotted keys, and multi-line strings are partially supported — for complex files, verify the output.

How are TOML sections mapped to JSON?

A TOML section header like [database] becomes a nested JSON object with the key "database". Keys defined under that section become properties of that object. Nested sections like [database.connection] become doubly nested JSON objects.

How are JSON nested objects mapped back to TOML?

Nested JSON objects are converted to TOML table sections. For example, {"server": {"host": "localhost"}} becomes a [server] section with host = "localhost". Primitive values at the top level are written as plain key-value pairs.

Can I use this to convert Cargo.toml or pyproject.toml files?

Yes for standard sections. Cargo.toml and pyproject.toml use standard TOML syntax that this converter handles well. Very complex files using array-of-tables ([[bin]], [[example]]) may require manual adjustment of the output.

Why does my TOML date value show as a string in JSON?

TOML supports native date and datetime types. This converter does not have a dedicated TOML parser with full type support, so datetime values are treated as strings in the output. Use the output as a starting point and adjust date types as needed.

Is my configuration data safe?

Yes. All conversion logic runs in your browser. Nothing is transmitted to any server, so sensitive configuration values like passwords and API keys remain private.

TOML / JSON Converter 完全使用指南与免费在线工具

无需安装、完全免费、纯前端本地运行的高效 TOML / JSON Converter 工具

用于快速解决：TOML与JSON互转。。无需安装复杂软件，打开网页即可立即使用，极速且安全。

为什么选择 Metoolzy 的 TOML / JSON Converter？

  • 秒级即时响应: 极致性能优化，输入即可见结果。
  • 数据绝对安全: 纯浏览器本地计算，数据绝不上传服务器。
  • 完全免费使用: 无需注册登录，无任何隐形消费。

三步快速上手

  1. 打开 Metoolzy TOML / JSON Converter 工具页面。
  2. 在输入区粘贴或上传您的数据。
  3. 即时查看处理结果并点击复制或下载。

功能对比表

对比项 Metoolzy TOML / JSON Converter 普通在线工具 本地客户端软件
使用成本 永久免费 有次数限制或收费 需购买授权
隐私保护 纯本地内存运行 数据需上传云端 本地运行

适用人群与应用场景

  • 软件开发人员日常调试与数据转换
  • UI/UX 设计师资产处理
  • 运营与办公人员效率提升

常见问题解答 (FAQ)

处理的数据会被记录或保存吗？

绝不会。所有运算均在您的浏览器本地完成，没有任何数据回传。