JSON Formatter & Validator

Paste your JSON to format, validate, and inspect it. All processing is local — nothing leaves your browser.

Input JSON

Output

Valid JSON Invalid

Formatted JSON will appear here

Keys

Depth

Raw Size

Root Type

JSON Formatting Tips

Use 2-space indentation for readable JSON in APIs and config files.
Minified JSON is faster to transmit over networks and APIs.
JSON keys must be strings in double quotes — single quotes are invalid.