JSON Formatter
Free online JSON formatter tool. Format JSON data with syntax highlighting, indentation, and error detection. Make JSON readable and beautifully formatted in your browser.
Before & After
{"users":[{"id":1,"name":"Alice"},{"id":2,"name":"Bob"}],"total":2}{
"users": [
{
"id": 1,
"name": "Alice"
},
{
"id": 2,
"name": "Bob"
}
],
"total": 2
}How to Format JSON
Paste your JSON
Paste your compact, minified, or unformatted JSON into the input editor.
Click Format
Click the "Format" button to beautify your JSON with proper indentation and syntax highlighting.
Copy or Download
Copy the formatted JSON to your clipboard or download it as a file.
Why Use Our JSON Formatter?
Syntax Highlighting
Get beautifully formatted JSON with color-coded keys, values, and syntax elements.
Error Detection
Formatting errors are detected and highlighted instantly with detailed messages.
100% Browser-Based
All formatting is done locally. Your data never leaves your device.
Adjustable Indentation
Choose between 2, 4, or tab indentation to suit your preferences.
File Upload Support
Upload .json files and format them with one click.
Free & Unlimited
No sign-up, no limits. Format as much JSON as you need.
When to Format JSON
| Scenario | Description |
|---|---|
| API Testing | Format API responses for easy reading and verification during testing. |
| Development | Format JSON configuration files for clearer code and easier debugging. |
| Data Inspection | Make compact JSON data readable for manual review and analysis. |
| Learning | Format JSON examples to understand structure and hierarchy for learning purposes. |