What is the JSON Formatter tool?

Pretty-print or minify JSON data. This free online tool is available at NumbersChecker with no login required.

Is the JSON Formatter tool free?

Yes, the JSON Formatter tool is completely free to use at NumbersChecker. No account or installation is needed — results are instant.

How do I use the JSON Formatter tool?

Enter your input into the form at https://numberschecker.com/tool/json-format, click Run, and the result appears instantly. Click any result value to copy it to your clipboard.

Is there an API for the JSON Formatter tool?

Yes. Send a POST request to https://numberschecker.com/api/json-format with your input as a JSON body. The API is free and requires no authentication.

Programming jsonprettyvalidateminify

JSON Formatter

Pretty-print or minify JSON data.

About the JSON Formatter Tool

Pretty-print or minify JSON data. This free online tool runs entirely in your browser — no login, no installation, and no data is stored.

This tool is part of the Programming category on NumbersChecker. Browse all Programming tools or explore all 139 tools.

Related: json · pretty · validate · minify

API usage

POST /api/json-format
Content-Type: application/json

{
  "text": "your input here"
}