JSON Formatter
Format, validate, and minify JSON with precise, human-readable error locations. Fast, local, and safe for sensitive data.
Processed locally in your browser — nothing is uploaded.
0 characters
Formatted JSON
Output appears here…About JSON Formatter
Paste JSON and get it validated and formatted instantly. Errors point at the exact line and column with a hint about what's likely wrong — a missing comma, an unquoted key, a trailing comma — instead of a cryptic parser message.
Choose 2-space, 4-space, or tab indentation, or minify to a single line for transport.
Common uses
- Make an API response readable
- Find the syntax error in a config file
- Minify JSON before embedding it somewhere compact
Example
Input
{"name":"Ada","tags":["math","computing"]}Output
{
"name": "Ada",
"tags": [
"math",
"computing"
]
}