Loading...
Format and beautify JSON data with customizable indentation
Beautify and format JSON instantly with our free online JSON beautifier. This tool helps developers and data analysts transform minified JSON into readable, properly indented format for easier debugging and analysis. Simply paste your JSON and get beautifully formatted output in real-time.
JSON Beautifier formats your JSON data with proper indentation and line breaks, making it easier to read and understand. Choose your preferred indentation size for customized formatting.
JSON beautification transforms minified or poorly formatted JSON into a human-readable format with proper indentation, line breaks, and spacing. This is essential for debugging API responses, reviewing configuration files, and understanding complex data structures. A well-formatted JSON document is easier to read, diff, and maintain.
The beautifier parses the JSON string into a JavaScript object, then re-serializes it with formatting options. Indentation (typically 2 or 4 spaces) is applied at each nesting level. Arrays and objects are formatted with line breaks between elements. The process validates JSON syntax while formatting, catching errors early.
JSON (JavaScript Object Notation) supports six data types: strings, numbers, booleans (true/false), null, arrays, and objects. Keys must be double-quoted strings. Numbers can be integers, decimals, or exponential notation (1e10). Trailing commas and single quotes are invalid. The beautifier uses JSON.parse() for validation and JSON.stringify(obj, null, indent) for formatting.
Transform minified API responses into readable format for analysis and debugging.
Prettify {"users":[{"id":1,"name":"John"}]} for inspectionFormat package.json, tsconfig.json, and other config files for easier editing.
Create readable JSON examples for documentation and tutorials.
Format JSON in pull requests to make changes easier to review and diff.
Format JSON log entries for better readability in log analysis.
// Beautify with 2-space indent
const formatted = JSON.stringify(jsonObject, null, 2);
// With custom replacer (filter keys)
const filtered = JSON.stringify(obj, ['id', 'name'], 2);
// Pretty print to console
console.log(JSON.stringify(data, null, 2));JSON.stringify's third parameter sets the indentation. null as second parameter includes all keys.
import json
# Beautify JSON string
data = json.loads(json_string)
formatted = json.dumps(data, indent=2)
# With sorted keys
formatted = json.dumps(data, indent=2, sort_keys=True)
# Handle Unicode properly
formatted = json.dumps(data, indent=2, ensure_ascii=False)Use ensure_ascii=False to preserve Unicode characters instead of escaping them.
# Beautify JSON file
cat data.json | jq '.'
# Beautify with 4 spaces
jq --indent 4 '.' data.json
# Beautify and sort keys
jq -S '.' data.json
# Beautify API response
curl api.example.com/data | jq '.'jq is a powerful command-line JSON processor. The "." filter outputs the input unchanged but formatted.
Use JSON beautify when you need to read, edit, or debug JSON data. It's essential for API development, configuration management, and any situation where humans need to understand JSON structure.
2 spaces is more common in JavaScript/web projects and keeps deeply nested structures compact. 4 spaces provides better readability for complex structures. Most style guides (Airbnb, Standard) use 2 spaces. Choose based on your team's preference or existing project standards.