Free Online JSON Formatter & Validator
Paste your JSON to instantly format, validate, and pretty-print it with proper indentation. Spot errors quickly with clear validation messages.
Example
Input
{"name":"John","age":30,"city":"New York"}Output
{
"name": "John",
"age": 30,
"city": "New York"
}How to Use the JSON Formatter & Validator
1
Paste your JSON into the input area.
2
Click Format to pretty-print or Minify to compress.
3
Validation errors will appear below the input if the JSON is invalid.
4
Copy the formatted result.
Frequently Asked Questions
What does the JSON formatter do?
It takes raw or minified JSON and formats it with proper indentation and line breaks for easy reading. It also validates the structure and reports any syntax errors.
Can it minify JSON?
Yes. You can both pretty-print and minify JSON with a single click.
Does it support large JSON files?
The tool handles JSON of any reasonable size. Processing happens entirely in your browser.
Is my data secure?
Yes. All processing is done client-side. Your JSON data never leaves your browser.