JSON Formatter & Validator
Paste your JSON to format, minify, or validate. See syntax highlighting and get detailed error reports.
Input Stats
Characters: 0
Size: 0 B
Output Stats
Characters: 0
Size: 0 B
How to Use
- Paste JSON – Copy your JSON into the Input field
- Choose action – Click Format, Minify, or Validate
- Review output – See formatted JSON and error messages
- Copy result – Click "Copy Output" to copy to clipboard
Example
Input:
{"users":[{"name":"Alice","age":28},{"name":"Bob","age":32}]}
Formatted Output:
{
"users": [
{
"name": "Alice",
"age": 28
},
{
"name": "Bob",
"age": 32
}
]
}
Common JSON Errors
- Missing commas – Objects/arrays need commas between items
- Trailing commas – JSON doesn't allow commas after last item
- Unquoted keys – JSON object keys must be in double quotes
- Single quotes – JSON requires double quotes, not single
- Mismatched brackets – Every { needs }, every [ needs ]
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