JSON Formatter
Beautify, minify and validate JSON in your browser.
How to use
- 粘贴 JSON 后实时美化；在「模式」下拉切换格式化 / 压缩 / 校验，结果即时更新。
- 「校验」模式只做语法检查并提示第一个错误位置（行号与原因），输入即时校验。
- 支持 2/4 空格与 Tab 缩进；排序键可选按字母排序输出。
- 格式化结果带语法高亮，可一键复制。
FAQ
Does JSON Formatter upload my data?
No. Processing stays in your browser and is not uploaded.
Do I need an account?
No. Open and use — no signup.
How is this different from upload-based tools?
Tools run locally in your browser; content is not sent to our servers for processing.
Are there limits?
Limited by device memory and the browser; very large inputs may slow the page.