JSON Formatter

Beautify JSON with indentation.

What this tool does

Format compact or minified JSON into readable, consistently indented output. This helps when reviewing API payloads, configuration files, and logs that are hard to scan in one-line form.

Tool interface

Input

Output

Example input

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

Example output

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

Step-by-step instructions

  1. Paste JSON into the input box.
  2. Click Transform to validate and pretty-print the payload.
  3. Copy the formatted JSON or continue into related tools.

Common use cases

  • Making compact API payloads readable in code reviews.
  • Formatting JSON logs for easier incident triage.
  • Preparing JSON snippets for documentation and tickets.

Readable JSON reduces debugging time and makes payload reviews easier in pull requests, docs, and incident analysis.

Common mistakes to avoid

  • Pasting JavaScript-style objects with trailing commas or single quotes.
  • Expecting formatter output to fix schema or business-logic errors.
  • Formatting only one branch of a payload and missing nested issues elsewhere.

Frequently Asked Questions

Does this validate JSON too?

Yes. Invalid JSON returns an error.

Will key order change?

No, existing key order is preserved.

Can I use this before minifying?

Yes. A common workflow is format for review, validate, then minify for transport.

What input format does JSON Formatter expect?

Use valid JSON input unless the tool explicitly asks for path or pattern syntax first.

What does JSON Formatter output?

It returns transformed output that you can copy directly from the result panel.

Why might JSON Formatter return an error?

A common issue is: Pasting JavaScript-style objects with trailing commas or single quotes.

Does JSON Formatter run in the browser?

Yes. Transformations are designed for in-browser usage so you can test and iterate quickly.

Can I copy or download results from JSON Formatter?

Yes. You can copy transformed output directly from the tool.

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Related categories

Looking for other utilities in this area? JSON Tools, Developer Data Tools