JSON Formatter, Minifier, Unminifier & Beautifier
Format, minify, unminify and beautify your JSON code instantly. Free online tool with advanced options, detailed statistics and customizable indentation. No registration required.
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JSON Formatter & Minifier
Format, minify, unminify and beautify your JSON code. Free online tool to format, optimize and compress your JSON files with detailed statistics.
Features
Our JSON tool offers three main features:
Minify
Reduce the size of your JSON code by removing spaces, comments and unnecessary characters.
Unminify
Restore the readability of your minified JSON code by adding spaces and line breaks.
Beautify
Format and beautify your JSON code with customizable indentation (2 or 4 spaces, or tabs) and get detailed statistics.
Basic example
Input JSON
{
"name": "FastMinify",
"version": "1.0.0",
"description": "A fast minifier tool",
"features": [
"JavaScript minification",
"CSS optimization",
"JSON compression"
]
}
Minified JSON
{"name":"FastMinify","version":"1.0.0","description":"A fast minifier tool","features":["JavaScript minification","CSS optimization","JSON compression"]}
Minification options
Compression Level
Controls the aggressiveness of JSON compression
ConservativeConservative - Whitespace removal only
NormalNormal - Basic optimizations
AggressiveAggressive - Advanced optimizations and cleanup
Compression examples:
Original code
{
"name": "test",
"value": 42,
"active": true,
"items": [1, 2, 3]
}
Conservative
{"name":"test","value":42,"active":true,"items":[1,2,3]}
Normal
{"name":"test","value":42,"active":true,"items":[1,2,3]}
Aggressive
{"name":"test","value":42,"active":!0,"items":[1,2,3]}
Optimize Numbers
Optimizes number representation (removes unnecessary zeros)
Comparison with/without option:
Original code
{
"price": 10.00,
"count": 0,
"rate": 1.0
}
With optimizeNumbers: true
{"price":10,"count":0,"rate":1}
With optimizeNumbers: false
{"price":10.00,"count":0,"rate":1.0}
Difference
Numbers are optimized (unnecessary zeros removed)
Remove Null Values
Removes properties with null values
Comparison with/without option:
Original code
{
"name": "test",
"value": null,
"active": true,
"count": null
}
With removeNullValues: true
{"name":"test","active":true}
With removeNullValues: false
{"name":"test","value":null,"active":true,"count":null}
Difference
Toutes les valeurs null sont supprimées
Remove Empty Arrays
Removes empty arrays from JSON
Comparison with/without option:
Original code
{
"name": "test",
"items": [],
"active": true,
"tags": []
}
With removeEmptyArrays: true
{"name":"test","active":true}
With removeEmptyArrays: false
{"name":"test","items":[],"active":true,"tags":[]}
Difference
Empty arrays are removed
Sort Object Keys
Sorts object keys alphabetically
Comparison with/without option:
Original code
{
"zebra": "striped",
"apple": "red",
"banana": "yellow"
}
With sortObjectKeys: true
{"apple":"red","banana":"yellow","zebra":"striped"}
With sortObjectKeys: false
{"zebra":"striped","apple":"red","banana":"yellow"}
Difference
Object keys are sorted alphabetically
Beautify Options
Options for formatting and beautifying JSON (Beautify only, not for Minify/Unminify)
Indentation Size
Sets the number of spaces or tabs for indentation during Beautify
Original code
{"name":"test","value":42}
With 2 spaces
{
"name": "test",
"value": 42
}
With 4 spaces
{
"name": "test",
"value": 42
}
Difference
Indentation is customizable only for Beautify. Unminify always uses 2 spaces.
Indentation Type
Use spaces or tabs for indentation during Beautify
Original code
{"name":"test","value":42}
With spaces
{
"name": "test",
"value": 42
}
With tabs
{
"name": "test",
"value": 42
}
Difference
Spaces are more standard, tabs may be preferred according to your code conventions.
JSON Statistics
Detailed information about your JSON structure
JSON statistics are automatically calculated and displayed in the results panel after each operation (Minify, Unminify, Beautify).
Keys
12
Objects
3
Arrays
2
Max Depth
3
Strings
5
Numbers
4
Booleans
2
Nulls
1
These statistics help you understand the structure and complexity of your JSON.