JSON Minify / Formatter / Validator

About this tool

Remove unnecessary whitespace and line breaks from JSON (minify), add readable indentation (pretty print), and detect syntax errors. It is useful when inspecting logs or API responses and when trimming pasted JSON before sharing. All processing happens entirely in your browser (no data is sent).

JSON Minify / Formatter / Validator

Input JSON

Output

Indent

—

How to use

Paste JSON into the input area and press Pretty or Minify.
Press Validate to check for syntax errors.

Example

Before:

{"a":1,"b":[2,3]}

After (Pretty):

{
  "a": 1,
  "b": [
    2,
    3
  ]
}

Use cases

Make API responses easier to read or analyze logs.
Check configuration files (JSON) for mistakes.
Minify JSON before pasting or sending it.