JSON 格式化JSON Formatter
在线JSON格式化、校验、压缩、美化工具Online JSON formatter, validator, compressor and beautifier.
关于 JSON 格式化About JSON Formatter
JSON（JavaScript Object Notation）是互联网上最通用的数据交换格式，但手写或压缩后的 JSON 往往难以阅读，漏掉一个引号或逗号还会导致解析失败。本工具提供 JSON 一键格式化、校验与压缩，帮助开发者在调试接口、编写配置时快速看清数据结构、定位语法错误，所有处理均在浏览器本地完成。JSON is the most common data-exchange format on the web, yet raw or minified JSON is hard to read, and a single missing quote or comma can break parsing. This tool formats, validates and minifies JSON in one click, helping developers inspect structures and locate syntax errors while debugging APIs or writing configs — all processed locally in your browser.
使用方法How to Use
- 将需要处理的 JSON 文本粘贴到输入框中。Paste the JSON text you want to process into the input box.
- 点击「格式化」按钮，工具会按标准缩进自动换行、对齐层级。Click "Format" and the tool will indent and align the hierarchy automatically.
- 若 JSON 存在语法错误，工具会提示错误位置与原因，便于快速修正。If the JSON has syntax errors, the tool points out the location and reason so you can fix it quickly.
- 确认无误后，可点击「压缩」输出无空白字符的单行 JSON，方便嵌入代码或配置。Once verified, click "Minify" to produce a single-line JSON without whitespace, ready to embed in code or configs.
常见问题FAQ
我粘贴的数据会上传到服务器吗？Is my pasted data uploaded to any server?
不会。格式化、校验与压缩全部在浏览器本地完成，数据不离开你的设备，可以放心处理接口报文、密钥配置等敏感内容。No. Formatting, validation and minification all happen locally in your browser; your data never leaves your device, so it is safe for sensitive payloads and configs.
格式化和压缩有什么区别？What is the difference between formatting and minifying?
格式化会添加缩进与换行，让人类更容易阅读；压缩则移除所有空白字符以减小体积，适合生产环境配置与网络传输。Formatting adds indentation and line breaks for human readability, while minifying strips all whitespace to reduce size, which suits production configs and network transfer.
JSON 校验不通过的常见原因有哪些？What are common reasons for validation failure?
大多是缺少逗号或引号、括号不匹配、使用了单引号、末尾多逗号，或把 undefined/注释写进了 JSON。可根据工具提示的错误位置逐项排查。Usually a missing comma or quote, unbalanced brackets, single quotes, a trailing comma, or undefined/comments sneaking into the JSON. Use the reported error position to track them down.
格式化超大 JSON 会卡死浏览器吗？Will formatting very large JSON freeze my browser?
本地处理 10MB 以内的 JSON 一般没有压力；超过该量级建议先压缩再分段处理。工具采用增量渲染，处理过程中页面不会整体卡死。Local processing handles JSON up to about 10 MB without issue; beyond that, minify first and process in chunks. Rendering is incremental, so the page never freezes completely.
如何把格式化后的 JSON 转到其他工具继续处理？How do I send formatted JSON to other tools?
格式化结果可一键复制，也可以直接发送到本站的 JSON 转换工具做 YAML/CSV 互转，适合数据清洗与接口联调场景。The result can be copied in one click or sent directly to the JSON converter for YAML/CSV transformations — handy for data cleaning and API integration.
相关阅读Related Reading
URL 编码的三个坑：空格变 + 还是 %20、中文与保留字符、双重编码Three URL Encoding Pitfalls: Space as + or %20, Chinese and Reserved Characters, Double Encoding
URL 编码看似简单，就是把不安全字符换成 `%XX`，但实际联调时空格变 `+` 还是 `%20`、中文该不该编码、参数被双重编码后服务端死活解析不出来——这些坑我一个个踩过。本文把三个最常见的问题讲透，附排查思路URL encoding looks simple — just replace unsafe characters with `%XX` — but in real integrations, whether a space becomes `+` or `%20`, whether Chinese needs encoding, and parameters that are double-encoded and can't be parsed on the server side are pitfalls I've hit one by one. This article explains the three most common problems and how to debug them.
保存即格式化：Prettier 与 ESLint 的分工与团队配置实践Format-on-Save: How Prettier and ESLint Divide the Work and a Team Config That Works
团队里代码风格不统一，review 时一半评论在挑空格和引号，这是病，得治。Prettier 管格式、ESLint 管质量，两者配合加上保存自动格式化，能把风格争议从代码评审里彻底剔除。本文讲清分工边界和一套能直接用的团队配置When code style is inconsistent across a team and half the code review comments are about spaces and quotes, that's a problem worth fixing. Prettier handles formatting, ESLint handles code quality, and together with format-on-save they eliminate style debates from reviews entirely. This article clarifies the division of labour and a team config you can use directly.
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