JSON Formatter & Beautifier
A professional JSON formatter and beautifier with syntax highlighting powered by CodeMirror. Supports formatting with custom indentation, minification, validation with detailed error messages, and a tree view for navigating complex JSON structures.
Code Snippets & Examples
Copy-paste ready code implementations for your project:
// Beautify with 2 spaces
const formatted = JSON.stringify(data, null, 2);
// Minify
const minified = JSON.stringify(data);import json
# Pretty print
formatted = json.dumps(data, indent=2)
# Minify
minified = json.dumps(data, separators=(',', ':'))⚡Related Developer Tools
Frequently used together with JSON Formatter & Beautifier
JSON Validator
Validate JSON syntax accuracy with precise line and column error indicators, structural sanity checks, and automated formatting suggestions.
JSON Viewer — Tree Explorer
Explore large JSON files using an interactive, searchable tree view with node expansion, key filtering, data type indicators, and single-click node copying.
SQL Formatter & Beautifier
Format and beautify complex SQL queries across PostgreSQL, MySQL, SQLite, and T-SQL dialects with uppercase keyword formatting and clause alignment.
Întrebări Frecvente
What is JSON formatting?
JSON formatting (or beautification) adds whitespace, newlines, and indentation to minified or compressed JSON to make it human-readable. The structure and data remain identical — only the presentation changes.
What is the difference between formatting and validating JSON?
Formatting only adds whitespace for readability. Validating checks that the JSON syntax is correct — matching brackets, valid strings, proper number formats, etc. This tool does both simultaneously.
Why does my JSON fail validation?
Common issues: trailing commas (not allowed in JSON), single quotes instead of double quotes, unquoted keys, comments (not allowed in JSON), or invalid escape sequences. This tool shows the exact line and character where the error occurs.
Can I minify JSON to reduce file size?
Yes. Use the "Minify" option to remove all whitespace. This is useful for production API responses or when storing JSON in databases where storage space matters.