JSON Formatter

Use this free JSON formatter to parse JSON, format it with readable indentation, optionally sort object keys, and copy the formatted output.

All tools

Research-backed assumptions Formula steps Examples included Private in-browser use

JSON textSort object keys

Formatted JSON

{
  "tool": "calculator",
  "live": true,
  "count": 3
}

object root, 3 keys

Root type: object
Keys: 3
UTF-8 bytes: 56

Formatting does not validate a business schema. It only checks whether the text is valid JSON.

Formula steps

Parse the text with JSON.parse.
Keep object key order from the input.
Stringify the result with two-space indentation.

How to use the json formatter

Paste JSON text into the input box.
Turn on Sort object keys only when alphabetical order will help comparison.
Press Format JSON to parse and pretty-print the output.
Treat parse errors as syntax checks, not full API schema validation.

Common uses

Pretty-print minified JSON before reading or sharing it.

Check whether copied JSON has valid quotes, commas, braces, and brackets.

Sort keys when comparing small JSON objects.

Copy formatted output for notes, debugging, or documentation.

Examples

Tool object {"tool":"calculator","live":true}

Formatted JSON

Array data [{"name":"Basic"},{"name":"Scientific"}]

Indented array

Sorted keys {"z":3,"a":1}

Keys sorted alphabetically

Frequently asked questions

Plain-language answers about when to use the tool, what it does with your inputs, what to double-check, and how privacy works.

When should I use the JSON Formatter?

Use it when your task matches one of these common needs: Pretty-print minified JSON before reading or sharing it. Check whether copied JSON has valid quotes, commas, braces, and brackets. It works best when you already know the values, dates, units, or settings the page asks for.

What is the JSON Formatter doing with my inputs?

In plain language: The tool parses JSON text in the browser, optionally sorts object keys recursively, then serializes the result with two-space indentation. The examples on the page are there so you can compare your inputs with a filled-out calculation before copying the answer.

What should I double-check before trusting the answer?

This checks JSON syntax, not whether the data matches an API schema, security rule, or business requirement. Also check that you used the right unit, date, scale, or mode because small input changes can change the result.

Does the site save what I enter?

No. The calculator runs in your browser tab. Your recent answers stay only on the page while you use it, and they are not sent to a server.