JSON Formatter & Validator | JSON Beautifier Online
Format and validate JSON in your browser. All processing happens locally—your data is never stored on a server.
- #developer
Output
Valid JSON
{ "name": "John", "age": 20 }
Characters
33
Lines
4
Objects
1
Arrays
0
File Size
0.0 KB
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Frequently asked questions
What is a JSON Formatter?
It turns compact JSON into a readable layout with indentation and line breaks.
What is a JSON Validator?
It checks JSON syntax and reports errors with line and column positions when something is wrong.
What is the difference between JSON Beautifier and Formatter?
Beautifier emphasizes readability; Formatter applies consistent indentation rules. In practice they are often used interchangeably.
When should I use JSON Minify?
Use it to remove whitespace and newlines for smaller payloads in APIs or config files.
Is my data stored on a server?
No. All processing runs in your browser and is never sent to or stored on a server.
Can I use it on mobile?
Yes. The responsive UI supports input, formatting, and validation on phones and tablets.