JSON Formatter Tool

Features

JSON Formatter Tool is a simple and easy-to-use online tool that helps you format, compress, and validate JSON data. Supports beautified output, single-line compression, error detection, and more. Perfect for programmers and API developers. No login required, runs entirely in your local browser, your data will not be uploaded to any server.

Main Functions

1. JSON Formatting

Beautify JSON output with automatic indentation and alignment

2. JSON Compression

Compress formatted JSON to a single line

3. JSON Validation

Detect JSON syntax errors and provide prompts

4. Real-time Preview

Input shows formatted results instantly

How to Use

1. Enter or paste JSON data in the left input box
2. Click the "Format" button to beautify JSON
3. Click the "Compress" button to compress JSON
4. The processed result will be displayed on the right
5. Click the "Copy" button to copy the result to clipboard

Examples

Before Formatting: {"name":"John","age":25,"city":"New York"}

After Formatting:

{
  "name": "John",
  "age": 25,
  "city": "New York"
}

After Compression: {"name":"John","age":25,"city":"New York"}

Features

• Completely free, no registration required
• Processed in local browser, data secure
• Supports formatting and compression
• Real-time syntax validation
• One-click copy results
• Error location hints
• Large file support