JSON Formatter
Paste JSON to validate it and turn compact payloads into readable output.
Output
Valid JSON
{
"name": "UtilPilot",
"tools": [
"json",
"base64",
"timestamp"
],
"online": true
}About this JSON formatter
JSON is a compact data format used by APIs, config files, logs, and web applications. Formatting turns a compressed JSON payload into indented text so keys, arrays, and nested objects are easier to inspect.
This tool parses your input in the browser, reports invalid JSON, and lets you switch between two-space and four-space indentation.
Common uses
- Read minified API responses
- Check whether copied JSON is valid
- Inspect nested objects and arrays
- Prepare readable snippets for documentation
Notes
Valid JSON requires double-quoted property names and strings. Trailing commas, comments, and single-quoted strings are common reasons JSON fails to parse.