JSON 格式化
格式化并验证 JSON
🔒 100% client-side — your data never leaves this page输入
输出
Output will appear here
About this tool
粘贴任意 JSON 字符串，立即获得整洁、缩进、可读的版本。支持 2 空格、4 空格和 Tab 缩进，错误高亮显示。
Frequently Asked Questions
What is a JSON formatter?
A JSON formatter (also called a JSON beautifier) takes minified or unformatted JSON and adds proper indentation and line breaks to make it human-readable.
Is my JSON data safe?
Yes. This tool runs entirely in your browser. Your JSON data is never sent to any server.
Why is my JSON invalid?
Common causes include trailing commas, single quotes instead of double quotes, unquoted keys, or missing brackets. The error message will point to the exact location.
What is the difference between JSON and JavaScript objects?
JSON requires double-quoted keys and does not support functions, undefined, or comments. JavaScript objects are more flexible.