JSON Formatter & Validator Online | JSON Beautifier Tool

Online JSON formatter, validator and beautifier with syntax highlighting. Format, minify, and validate JSON data with error detection and tree view support.

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Usage Guide

  • Format, compress and edit JSON data
  • Automatic syntax checking and error detection
  • Support code folding and expansion
  • Switch between light and dark themes
  • Automatically save the last 10 records

JSON Knowledge

JSON (JavaScript Object Notation) is a lightweight data interchange format. It is based on a subset of JavaScript but is language independent.

Basic Syntax

JSON is built on two structures: collections of key-value pairs (objects) and ordered lists of values (arrays). It supports data types including strings, numbers, booleans, null, objects, and arrays.

Data Types

String: Enclosed in double quotes Number: Integer or floating point Boolean: true or false Null: null Object: Key-value pairs enclosed in {} Array: Ordered list enclosed in []

Common Uses

API data transfer, configuration files, data storage, frontend-backend communication, etc.

Key Features

  • Simple syntax, easy to read and write
  • Supports nested structures for complex data
  • Language independent, widely supported
  • Lightweight with efficient transmission

Applications

  • Web API response format
  • Application configuration files
  • Data storage and exchange
  • Cross-language data transfer
  • Frontend-backend interface communication
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