How to Format JSON Online

Problem: You have a compact or minified JSON payload and need readable, validated output.

Steps

1. Open the JSON Formatter.
2. Paste your JSON into the input area.
3. Click Format. The tool will prettify and validate the JSON.

Example input

{"name":"Alice","age":30,"roles":["dev","admin"]}

Example output

 {
  "name": "Alice",
  "age": 30,
  "roles": [
    "dev",
    "admin"
  ]
}

Tips

• If the JSON is invalid, the formatter will indicate the error location. Fix the error and re-run.
• Use the JSON Viewer for large nested payloads.
• Compare two JSON outputs with Text Compare.