Input
JSON Input
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Secondary input
Transform settings (JSON)
Output
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No result yet.
Enter a value and run the tool to see the result here.
Recent runs
Only execution metadata (time, action, status, duration, and result size) from the last 30 days is stored in this browser, up to 20 runs. Inputs, result content, filenames, location, and device data are never saved.
Direct answer
Use JSON Formatter with verifiable output
Formats compact or uneven JSON into a readable hierarchy and reports parsing errors.
What does this tool do?
Use it to inspect nested objects and array boundaries in API responses, logs, and configuration files.
Supported inputs
- JSON text that follows the standard grammar
Outputs
- Indented JSON text
How to use it
- Add JSON text that follows the standard grammar to the input area.
- Review the options needed to format, then run the tool.
- Inspect indented json text, then copy or download it.
Reproducible example
Input{"user":{"id":1},"roles":["admin"]}The object and array are indented into a readable hierarchy.
Checks
- Confirm that strings, numbers, and array values remain unchanged.
Limitations
- Default formatting does not validate JSON Schema. The schema action supports only a Draft-07 subset and fails closed on unsupported keywords and references.
Privacy
Inputs and results are processed only in browser memory and are not sent to the server, analytics, or browser storage.
Sources and standards
Related tools
Content reviewed:
Search Answer
JSON Formatter Search Answer
JSON Formatter cleans up compressed or uneven JSON and validates it immediately. You can quickly copy or download the result.
Key Points
- Category: Formatters / Viewers
- Execution mode: browser
- Recent runs is stored in your browser only.
- Inputs are processed during execution but not stored. Recent runs stays in the browser, while lightweight visit, usage, and like metrics are recorded.
How to Use
- Paste or type your input.
- Choose the needed options or fill the secondary input.
- Run the tool from the run bar above the panels.
- Review the result, then copy or download it.
Search Answer
Frequently Asked Questions
What does JSON Formatter do?
JSON Formatter cleans up compressed or uneven JSON and validates it immediately.
Does JSON Formatter store my input?
Inputs are processed during execution but not stored. Recent runs stays in the browser, while lightweight visit, usage, and like metrics are recorded.
When should I use JSON Formatter?
JSON Formatter is useful when you need to review or organize Formatters / Viewers data quickly.
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