JSON Formatter

About JSONIQ JSON Formatter

JSON (JavaScript Object Notation) is the most widely used data interchange format on the web. JSONIQ provides a comprehensive toolkit for working with JSON — formatting raw or minified JSON for readability, validating syntax, minifying for production use, and exploring complex structures through an interactive tree view.

What is JSON?

JSON is a lightweight text-based format for structured data exchange. It supports six data types: strings, numbers, booleans, null, objects (key-value pairs), and arrays. JSON is language-independent and used by virtually every REST API, configuration file, and data storage system.

Common JSON Errors

• Missing or extra comma (trailing commas are not allowed in strict JSON)
• Unquoted keys (all keys must be double-quoted strings)
• Single quotes instead of double quotes for strings
• Comments in JSON (not supported — use JSON5 instead)
• Undefined or NaN values (not valid JSON values)

When to Minify JSON

Minified JSON removes all whitespace and newlines, reducing file size. This is ideal for API responses, configuration files in production, and embedded data in web pages. For human-readable config files and development, always use formatted JSON.