JSON Formatter & Validator
Validate, prettify, and minify JSON data instantly.
Formatted JSON
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How to Use
01
Paste Your JSON
Enter or paste any JSON data into the input textarea.
02
Format or Minify
Click 'Format' to pretty-print with 2 or 4 spaces, or 'Minify' to compress into a single line.
03
Copy the Result
Use the copy button to save the formatted or minified JSON to your clipboard.
Frequently Asked Questions
Is my data sent to a server?
No. All JSON processing happens entirely in your browser using the native JSON.parse and JSON.stringify APIs. Your data never leaves your device.
What size of JSON can I process?
There is no hard limit, but very large JSON objects may cause performance slowdowns in the browser. For most typical use cases, performance is instant.
Does this tool validate JSON?
Yes. If your input is not valid JSON, an error message will appear in the result area showing the parse error details.