What is JSON Formatter?
JSON (JavaScript Object Notation) is a lightweight data-interchange format easily read and written by humans and parsed by machines. A JSON Formatter takes unformatted or minified JSON strings and formats them with consistent spacing, indentation, and structure.
How to use this tool
- Paste your raw JSON string into the input editor.
- Choose your preferred indentation (2 or 4 spaces).
- Click "Format JSON" to beautify or "Minify" to compact.
- Copy the formatted output to clipboard or download it as a .json file.
Example
Input:
{"name":"DevForge","type":"tools","features":["JSON","JWT","UUID"]}Output:
{
"name": "DevForge",
"type": "tools",
"features": [
"JSON",
"JWT",
"UUID"
]
}Common Use Cases
- Debugging API responses returned as unformatted single-line JSON.
- Preparing clean configuration files for repository commits.
- Minifying large JSON objects to reduce payload size in Network requests.
- Validating structural integrity before sending API payloads.
Frequently Asked Questions
Is my JSON data sent to any server?
No. DevForge processes all JSON formatting, validation, and minification 100% inside your browser using standard JavaScript APIs. No data leaves your machine.
What happens if my JSON has trailing commas?
Standard JSON specifications (RFC 8259) disallow trailing commas. The validator will flag a syntax error at the exact line of the trailing comma.