ThaiTools.ai

What Is JSON? A Beginner's Guide

2026-08-11

What Is JSON? A Beginner’s Guide

JSON (JavaScript Object Notation) is a data-exchange format readable by both humans and machines — the standard for modern APIs.

Basic Structure

{
  "name": "ThaiTools",
  "tools": 53,
  "free": true
}
  • Data is stored as key: value pairs
  • Keys must be in double quotes
  • Supports string, number, boolean, array, object, null

Common Errors

  • Trailing commas — JSON doesn’t allow them
  • Keys without quotes
  • Unbalanced braces

How to Validate JSON

  1. Use our JSON Formatter — beautify + error checking with position hints
  2. Or check via your browser console (JSON.parse)
  • Easier to read than XML
  • Supported by every programming language
  • Light and fast

Format Automatically

Use our JSON Formatter & Validator — beautify/minify + validation. Free.