本地运行
JSON格式化
在本设备处理 · 无需上传快速格式化或压缩JSON数据。
JSON输入
格式化 / 压缩
缩进
结果
如何格式化JSON
- 在左侧输入框中粘贴JSON数据。
- 选择缩进（2空格、4空格或制表符）和格式化/压缩模式。
- 在右侧查看格式化结果，点击复制按钮复制到剪贴板。
The JSON formatter neatly indents JSON that's crammed onto one line, or does the opposite and minifies it by stripping whitespace. It's especially handy for developers inspecting API responses, tidying config files, or hunting down syntax errors.
Format vs minify
Formatting adds indentation and line breaks so the structure is easy to scan; minifying removes unnecessary whitespace to shrink the file and speed up transfer. Choose 2 spaces, 4 spaces, or tabs for indentation.
Finding syntax errors
Paste invalid JSON and it tells you where the problem is, catching common mistakes like missing quotes or stray commas. Everything runs in your browser, so even sensitive data stays safe.
常见问题
- 输入无效的JSON会怎样？
- 会显示错误信息，指出语法错误发生的位置。
- JSON压缩（Minify）是什么？
- 压缩会去除所有不必要的空格和换行，将JSON压缩为一行。适用于减小文件大小或API传输。
- 数据会发送到服务器吗？
- 不会。所有处理在浏览器中本地完成，数据不会被发送到任何外部服务器。
- Is my data sent to a server?
- No. All formatting and validation happens entirely in your browser and is never transmitted.
- Can it handle large JSON?
- Yes. Typical sizes are no problem; very large files may be a little slower depending on your device.