Text utilities

JSON Formatter

Validate JSON syntax and format it with indentation or compact spacing.

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Input workspace

Runs on your device

OUTPUT WORKSPACE

Your result

Let’s calculate.

Use the Calculate button to see your result.

Your content is processed locally.

How to use this tool

  1. Enter json, mode.
  2. Select Update result to view the result.
  3. Check the method and assumptions below before using the result.

The method, explained

Parse the input as JSON, then serialize the resulting value with two-space indentation or no extra whitespace.

A WORKED EXAMPLE

The input {"a":1,"b":[2,3]} can be expanded into an indented object or kept compact while remaining valid JSON.

What to keep in mind

Duplicate object keys retain the last value. Large numeric literals may lose precision in JavaScript, and key ordering may change. Do not use this to preserve signed byte-for-byte payloads.

Common questions

Are comments allowed?

No. Standard JSON does not allow comments or trailing commas.

Does valid JSON mean the data has the right structure?

No. Syntax validation is different from validating a business schema or required fields.

Methodology maintained by ClarityKit. How these tools are built and checked.