JSON Formatter & Validator

Format, validate and minify JSON with configurable indentation and key sorting. Errors are shown with line and column.

Runs locally in your browser

Indent

Sort keys

JSON input

Valid JSON · object · 6 keys · depth 2

Result

{
  "name": "no.tools",
  "tools": [
    "base64",
    "json-formatter"
  ],
  "private": true,
  "stats": {
    "users": 42,
    "since": 2026
  }
}

More Developer tools