Json

json • format • validate

Input

Output

{
  "flashman": true,
  "tools": [
    "json"
  ]
}

About this tool

The JSON formatter validates, pretty-prints, and minifies JSON text. It helps you inspect API responses, configuration files, and log payloads without sending data to a remote server.

Your input is processed in the browser. We do not upload tool payloads to our servers.

Common use cases

Pretty-print API responses before pasting into tickets or documentation.
Minify JSON before embedding in scripts or environment variables.
Catch syntax errors early when editing config files.

Examples

Format a compact object

Paste {"name":"flashman","active":true} and choose Format to add indentation.

{
  "name": "flashman",
  "active": true
}

FAQ

Is my JSON sent to a server?: No. Parsing and formatting run entirely in your browser.
What if JSON is invalid?: The tool shows a clear error message with the parser failure so you can fix the syntax.

Related guide

How to pretty-print, minify, and validate JSON for APIs, configs, and logs—without leaking data.

Read: JSON formatting and validation: a practical guide →