What is a JSON Formatter?

A JSON formatter takes compact or messy JSON text and rewrites it with consistent indentation and line breaks so it is easier to read, review, and share. It does not change the data—only how it is presented.

How to Use

Paste your JSON into the input box above.
Click "Format JSON" to pretty-print with 2-space indentation.
Review the output below. Fix any errors shown if the JSON is invalid.
Use "Copy to clipboard" to paste the formatted result elsewhere.
Use "Clear" to reset both input and output.

Example

Raw (minified) JSON:

{"name":"SmartFlexa","tools":["JSON","Image","PDF"],"active":true,"meta":{"version":1}}

Formatted:

{
  "name": "SmartFlexa",
  "tools": [
    "JSON",
    "Image",
    "PDF"
  ],
  "active": true,
  "meta": {
    "version": 1
  }
}

FAQ

What is JSON?: JSON (JavaScript Object Notation) is a lightweight text format for structured data. Objects use curly braces, arrays use square brackets, and values can be strings, numbers, booleans, null, arrays, or nested objects.
Is this tool free?: Yes. SmartFlexa’s JSON Formatter is free to use in your browser with no signup required for basic formatting.
Is my data secure?: Formatting runs in your browser. Your JSON is not sent to a server for this page. Avoid pasting secrets or production credentials into any online tool if your policy forbids it.

Head tags & social previews

Paste-ready <meta> and Open Graph markup, with a live search snippet preview—all in your browser.

Compare text

Highlight additions, removals, and edits between two drafts—runs locally in your browser.

Identifier naming

Batch-generate camelCase, snake_case, kebab-case, and constant-style names from one paste.

JSON Formatter

Output