JSON Formatter & Validator

Validate, format, minify, sort, copy and download JSON locally.

No sign-up requiredSupported inputs stay in your browser

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JSON Formatter & Validator | ToolCookie

JSON Formatter & Validator

Validate, format, minify and sort JSON without uploading the content to ToolCookie.

Runs locally in your browser

JSON workspace

New to JSON?

JSON is a structured text format used by websites and apps to exchange information. Paste JSON here to make it readable or check whether punctuation, quotes and brackets are valid.

Input JSON

Result

Paste JSON and choose an action.

0characters

0keys

0maximum depth

The tool validates JSON syntax only. It does not verify whether the data is accurate, safe or suitable for another system.

Why Use Our JSON Formatter & Validator

Immediate results

Focused controls help you complete the task without unnecessary steps.

Privacy focused

Supported inputs are processed in your browser rather than uploaded by this tool.

Clear output

Validate, format, minify, sort, copy and download JSON locally.

How It Works

1Paste or upload JSON

2Validate and format it

3Copy or download the result

Frequently Asked Questions

What is a JSON formatter and validator?

It checks whether JSON follows valid syntax and presents valid data in a structured, readable format for reviewing, debugging or reuse.

Is my JSON uploaded?

No. Validation, formatting and sorting run locally in your browser.

Can the tool repair invalid JSON automatically?

It identifies validation errors so you can correct the source without silently changing its meaning.

Can I download the result?

Yes. You can copy or download the processed JSON after validation.