JSON 格式化
美化、压缩和验证 JSON 数据
使用方法
粘贴或输入内容
在输入区域输入您的文字、代码或数据。
选择选项
选取要应用的转换方式或格式。
复制结果
一键将输出结果复制到剪贴板。
为什么使用此工具
100% 免费
没有隐藏费用，没有付费等级——所有功能完全免费。
无需安装
完全在浏览器中运行。无需下载或安装任何软件。
隐私且安全
您的数据永远不会离开您的设备。不会上传至任何服务器。
支持移动设备
完全响应式设计——在手机、平板或桌面电脑上均可使用。
Understanding JSON Formatting and Validation
Key Takeaways
- Well-formatted JSON improves readability and makes debugging API responses significantly faster.
- JSON validation catches syntax errors like missing commas, unquoted keys, and trailing commas before they cause runtime failures.
- All formatting and validation happens entirely in your browser — your data never leaves your device.
JSON (JavaScript Object Notation) has become the universal data interchange format for web APIs, configuration files, and NoSQL databases. Despite its simplicity, malformed JSON is one of the most common causes of integration failures. A reliable formatter and validator helps developers quickly identify structural issues and produce clean, readable output.
Over 90% of public REST APIs use JSON as their primary response format.
Industry Usage
Common Use Cases
API Response Debugging
Paste minified API responses to instantly see the nested structure, making it easy to locate specific fields and identify unexpected values.
Configuration File Editing
Format and validate package.json, tsconfig.json, and other config files to catch syntax errors before deployment.
Database Document Inspection
Pretty-print MongoDB or Firestore documents to understand complex nested schemas and embedded arrays.
Webhook Payload Analysis
Format incoming webhook payloads from services like Stripe or GitHub to verify data structure matches your expectations.
Pro Tips
Use 2-space indentation for compact output or 4-space for maximum readability — choose based on your team's style guide.
Sort keys alphabetically when comparing two JSON objects to quickly spot differences.
Minify JSON before sending it over the network to reduce payload size and improve transfer speed.
Watch for common pitfalls: trailing commas, single quotes instead of double quotes, and unquoted property names are all invalid JSON.
All JSON formatting and validation is performed entirely in your browser using client-side JavaScript. Your data is never transmitted to any server, ensuring complete privacy for sensitive API responses and configuration data.