toolboxapp

Beautify JSON Online

Beautify minified JSON with readable indentation and validation. Runs locally in your browser.

Turn compact API output into structured, indented JSON that is easier to scan, debug and copy.
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Data Tools

Free  ·  Local browser processing  ·  No signup

What this tool helps you do

Turn compact API output into structured, indented JSON that is easier to scan, debug and copy.

This page uses the same tested JSON Formatter engine as the main tool, but focuses on this specific task so you can get straight to the relevant workflow without hunting through a generic converter.

How to use it

  1. Paste or enter the content you want to process in the tool above.
  2. Use the preselected mode when this task has a specific mode, then click Run.
  3. Review the output, then copy or download it if the tool provides a download option.

Common uses

  • Reading API responses
  • Debugging webhook payloads
  • Reviewing configuration data

Example

Input: {"user":{"id":7,"active":true}}

Expected result: { "user": { "id": 7, "active": true } }

Useful tip

If the input is invalid JSON, use Fix Invalid JSON first when the error comes from quotes, commas or unquoted keys.

Frequently asked questions

Is this tool free?

Yes. The tool is free to use, requires no account and runs directly in your browser.

Is my input uploaded to a server?

No. The tool processes the input locally in your browser. Your tool input is not sent to ToolboxApp servers.

When should I use JSON Formatter?

Reading API responses, debugging webhook payloads, or reviewing configuration data.