Format JSON

Format or minify JSON directly in the browser.

Paste a JSON object, array, string, number, boolean, or null value, then choose an indentation width from 0 to 8 spaces. Use the minify button when you need compact JSON for logs, URLs, fixtures, or configuration snippets.

Invalid JSON returns a clear error message instead of sending the content to a server.

When to use it

Clean up API responses before code review, shrink JSON fixtures for repositories, or teach students how whitespace affects readability without changing parsed values.

Limitations

Processing runs in your browser session; very large inputs may be slow or memory-heavy. Edge cases, locale-specific rules, and third-party API semantics may differ—verify critical results independently before relying on them in production or legal contexts.

Example

Input {"b":2,"a":1} for format-json yields a deterministic reformatted string unique to this converter.

This skill is available over A2A JSON-RPC and REST. When you already know the skill id and export, call execute directly—no discovery step required.

REST example

curl -sS -X POST https://toolplaza.app/api/helpers/execute \
  -H 'Content-Type: application/json' \
  -d '{"skillId":"json-xml__format-json","export":"formatJson","args":["Hello"]}'

A2A JSON-RPC example

Send POST https://toolplaza.app/api/a2a with:

{
  "jsonrpc": "2.0",
  "id": "1",
  "method": "message/send",
  "params": {
    "message": {
      "messageId": "uuid",
      "role": "user",
      "parts": [
        {
          "kind": "text",
          "text": "ignored"
        }
      ]
    },
    "metadata": {
      "toolplaza": {
        "skillId": "json-xml__format-json",
        "export": "formatJson",
        "args": [
          "Hello"
        ]
      }
    }
  }
}

Full Agent API guide · Skill schema