JSON Formatter Tool

Format, validate, and minify JSON on a separate tool page.

Paste JSON into the box to check whether it is valid, turn it into readable formatted JSON, or compress it into a minified version for transfer and storage.

Useful for API responses, configuration files, and debugging payloads.

Your JSON is valid. Top-level object keys: {{ keyCount }}

Your JSON is not valid

The formatter could not parse the text. Check the message below, then fix the broken part and try again.

Paste your JSON

Tip: click “Format JSON” to make it readable, or “Minify JSON” to remove spaces and line breaks.

{{ isValid ? 'Valid JSON' : 'Invalid JSON' }} {{ keyCount }} top-level keys {{ parseResult.message }}

Formatted output

{{ formattedOutput || 'No formatted output yet. Enter valid JSON to see pretty-printed output.' }}

Minified output

{{ minifiedOutput || 'No minified output yet. Enter valid JSON to see the compact version.' }}

How to use this page

1. Paste JSON data

Add an API response, config file, or any raw JSON string to the text box.

2. Choose an action

Use “Format JSON” to make it readable or “Minify JSON” to compress it.

What the tool tells you

Valid JSON

The page can parse the content and show formatted and minified output.

Invalid JSON

The page shows the parser error so you can find and fix the broken part faster.

Useful examples

API responses

Paste raw response data to make nested objects easier to inspect.

Config files

Format JSON settings before storing them in project documentation or repositories.

Payload cleanup

Minify valid JSON when you want a smaller payload for transfer or storage.

JSON formatter FAQ

Does this tool fix invalid JSON automatically?

No. It validates input and shows the parser error so you can correct it yourself.

Can it format arrays and objects?

Yes. Any valid JSON value can be formatted.

What does minify mean?

Minifying removes extra spaces and line breaks while keeping the JSON valid.