JSON Formatter
JSON prettify, minify, validate & sort keys
100% In-BrowserNo Server UploadFree, No Signup
FormattersHow to Use
- Choose a mode
Select Prettify, Minify, Validate, or Sort Keys from the toolbar.
- Enter JSON
Paste or type JSON into the input area and click "Convert".
- Copy result
Use the "Copy" button to copy the formatted result to your clipboard.
JSON Formatter Examples
JSON Prettify
Input
{"name":"John","age":30,"skills":["JS","Python"]}Output
{
"name": "John",
"age": 30,
"skills": [
"JS",
"Python"
]
}Select Prettify mode. Indent size can be 2 or 4 spaces.
JSON Minify
Input
{
"name": "John",
"age": 30
}Output
{"name":"John","age":30}Minify mode removes all unnecessary whitespace.
Features
- JSON prettify for human-readable output
- JSON minify to reduce payload size
- JSON syntax validation with error reporting
- Sort keys alphabetically (recursive)
- Configurable indent size (2 or 4 spaces)
- Real-time preview support
- Local processing for privacy
FAQ
What is the difference between prettify and minify?
Prettify adds indentation and newlines for readability. Minify strips all unnecessary whitespace to minimize file size.
How does sort keys work?
It recursively sorts all object keys in alphabetical (lexicographic) order, including nested objects.
Is my data sent to a server?
No. All processing happens locally in your browser and nothing is uploaded.