🎒 JSON ↔ TOON 互转JSON ↔ TOON Converter

使用说明与常见问题How-to & FAQ

「JSON ↔ TOON 互转」是什么？What is the JSON ↔ TOON Converter tool?

在 JSON 和 TOON（Token-Oriented Object Notation，面向大模型提示词的紧凑格式）之间互相转换，支持逗号、Tab、竖线分隔符，并对比字符数节省了多少。Convert between JSON and TOON (Token-Oriented Object Notation, a compact format for LLM prompts) with comma, tab or pipe delimiters, and see how many characters you save.

如何使用「JSON ↔ TOON 互转」？How do I use the JSON ↔ TOON Converter?

选择转换方向，把 JSON 或 TOON 粘贴到输入框即可。对象数组会变成表格形式，例如 users[2]{id,name}: 后面每行一条记录；反向转换会严格校验行数和列数。Choose a direction and paste JSON or TOON. Arrays of objects become tables such as users[2]{id,name}: followed by one row per record; decoding strictly checks row and column counts.

TOON 是什么？为什么能省 token？What is TOON and why does it save tokens?

TOON 是 2025 年出现的开源数据格式，用缩进表示层级，对字段相同的对象数组只写一次表头、每条记录一行（类似 CSV），省掉了 JSON 里重复的键名、引号和括号，适合把结构化数据放进大模型提示词。TOON is an open data format from 2025 that uses indentation for nesting and, for arrays of same-shaped objects, writes the field names once in a header with one row per record (like CSV), dropping JSON's repeated keys, quotes and braces — handy for LLM prompts.

转换会丢数据吗？Is the conversion lossless?

对普通 JSON 数据是无损的：JSON → TOON → JSON 可以得到相同的数据。本工具使用 TOON 官方开源实现（MIT 许可，已本地打包），反向解析采用严格模式。For ordinary JSON data it is lossless — JSON → TOON → JSON gives the same data. The tool uses the official open-source TOON implementation (MIT, bundled locally) and decodes in strict mode.

「JSON ↔ TOON 互转」免费吗？数据会上传吗？Is the JSON ↔ TOON Converter free? Is my data uploaded?

「JSON ↔ TOON 互转」完全免费，无需注册或安装，手机和电脑都能用；所有处理都在你的浏览器本地完成，输入的内容和文件不会上传到服务器。The JSON ↔ TOON Converter is completely free with no sign-up or install and works on phones and desktops; everything runs locally in your browser and nothing you enter is uploaded.