JSON Diff | 72Tool Free Online JSON Tool

JSON Diff — a free online JSON & XML tool. Runs entirely in your browser, no upload, no registration, works on phone and desktop.

JSON Diff is a free online tool in the 72Tool toolbox for JSON tasks. Enter your input to get instant, accurate results — handy for work, development and daily use.

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JSON Diff

JSON差异对比是一款免费的在线 JSON/XML 处理工具，无需下载安装、无需注册登录，打开网页即可使用。它会先把两份 JSON 递归按键名排序并美化，再用最长公共子序列算法逐行比对，用绿色标出新增行、红色标出删除行，一眼看清两份数据的区别。所有处理均在浏览器本地完成，数据不上传服务器。

JSON差异对比适用于配置文件版本对比、接口返回前后差异核对、代码评审时定位数据变更等场景。由于对比前统一了键名顺序，差异结果只反映真实变化、没有无意义噪音。作为一款轻量在线工具，它随开随用，是接口联调与开发调试中的实用小工具。

使用教程
  1. 把两份 JSON 分别粘贴到 A、B 输入框。
  2. 点击「对比差异」按钮。
  3. 浏览器本地规范化并逐行比对。
  4. 在结果区查看绿色新增行与红色删除行。
常见问题
Q1：为什么对比前要排序键名？
A：统一键名顺序后，差异只体现真实变更，避免键顺序不同造成的干扰。
Q2：能对比数组顺序变化吗？
A：能，数组顺序不同会体现为对应行的增删差异。
Q3：数据会上传吗？
A：不会，全部在浏览器本地处理。
Q4：完全相同会怎样？
A：会提示「两个 JSON 完全一致」。
Q5：支持多大的 JSON 对比？
A：本地处理无硬性限制，超大文件因逐行算法可能稍慢，建议对比关键片段。
JSON差异对比可以在手机上使用吗？
A：可以，本工具基于网页运行，手机、平板、电脑均可直接打开网页使用，无需安装 App。
相关工具
JSON Formatter & Validator Sort JSON Keys JSON Minifier JSON Path Extractor JSON to CSV
Features & Use Cases

JSON Diff is a free online JSON & XML tool. No download or registration is required — just open the page and use it instantly. All processing runs locally in your browser, so your files and data never leave your device, keeping everything private.

How to Use
  1. Enter or paste the content you want to process into the input area.
  2. Set any options you need (such as units or modes) from the controls on the page.
  3. Click the action button and let the tool process everything locally in your browser.
  4. View the result, then copy or download it as needed.
FAQ
Q：Is the result accurate?
A：It uses standard algorithms and conversion factors, accurate enough for everyday and work use.
Q：Do I need to install anything?
A：No. It is a pure browser tool — paste your code/text and get the result instantly.
Q：Can I use it on my phone?
A：Yes. It runs in any modern browser on phone, tablet, or desktop — no app install needed.
Q：Is it really free?
A：Yes, this tool is completely free to use, with no login required.
Related Tools
JSON Formatter & Validator Sort JSON Keys JSON Minifier JSON Path Extractor JSON to CSV

Note: JSON Diff runs entirely in your browser; your data is not uploaded to any server. Explore more free online tools on the 72Tool homepage.