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JSON Formatter

Format, validate, and compress JSON. Tree view, error detection with line/column numbers, copy formatted or minified output. All client-side.

JSON Input

Output

Valid JSON

{
  "name": "JSON2Code",
  "version": "1.0.0",
  "description": "A powerful JSON to code converter",
  "features": [
    "format",
    "validate",
    "compress"
  ],
  "config": {
    "theme": "dark",
    "language": "typescript",
    "options": {
      "nullable": true,
      "useType": false
    }
  },
  "users": 10000
}

Quick Examples

325 chars input·325 chars formatted·240 chars minified·Compression: 26%

How to use this tool

Format JSON before sharing it in a pull request, API ticket, or configuration review. The formatter makes nesting visible and identifies invalid syntax before it reaches an application.

Suggested workflow

Paste a JSON object or array into the input panel.
Choose format, validate, or minify based on the job.
Review the result and copy the normalized JSON.

Good to know

Use minified JSON only for transport or fixtures; keep formatted JSON in documentation and code review.

JSON Formatter - CodeTools Toolbox - 47 free online developer tools.