JSON Formatter

Format, validate and minify JSON in your browser, with clear error messages when the JSON is invalid.

100% Free
No account required
Runs in your browser
No data is uploaded

Remember work on this deviceNot saved automatically

Private to this browser, not a cloud backup. Saves expire 7 days after the last save. Avoid saving sensitive data on shared devices.

Input

Paste or edit your JSON, then click “Run tool”.

Type, paste or drop a file

JSON

[{
  "id": 7,
  "name": "George Clark",
  "email": "george@example.com",
  "roles": ["user"],
  "active": true
},
{
  "id": 8,
  "name": "Hannah Abbott",
  "email": "hannah@example.com",
  "roles": ["user"],
  "active": false
}]

Ln 1, Col 1Spaces: 2UTF-8228 bytes

Output

Formatted JSON (read-only).

Read-only

JSON

Ln 1, Col 1Spaces: 2UTF-80 bytes

Ready when you arePaste your input, then press Run tool or ⌘ ↵

Why use this tool?

Turn a one-line API response or a hand-edited config into readable JSON. Useful for developers, API testing and data processing.

Validate JSON syntax
Pretty print (human readable)
Minify JSON (smallest size)
Jump straight to a syntax error

[{
  "id": 7,
  "name": "George Clark",
  "email": "george@example.com",
  "roles": ["user"],
  "active": true
},
{
  "id": 8,
  "name": "Hannah Abbott",
  "email": "hannah@example.com",
  "roles": ["user"],
  "active": false
}]

Common use cases

Format API responses
Validate JSON files
Prepare data for development
Minify for production
Debug JSON errors

JSON Formatter

Saved JSON Formatter workspaces

Input

Output

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