JSONView

JSON Formatter Online

Paste JSON below to instantly format, beautify and validate

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About This Tool

A JSON formatter is an essential tool for developers working with APIs, configuration files, and data pipelines. Raw JSON returned from APIs is often minified — stripped of whitespace and newlines to reduce payload size. While efficient for transmission, minified JSON is nearly impossible to read or debug manually. Our free online JSON formatter instantly transforms minified or poorly structured JSON into clean, indented, human-readable output. Simply paste your JSON, click Format, and get perfectly formatted output with consistent indentation. JSONView's JSON formatter also validates your JSON as it formats — if there are syntax errors, you'll see the exact line and character position of the problem. Use it to debug API responses, review configuration files, inspect webhook payloads, or clean up JSON data before committing to your codebase. Works entirely in your browser — your data never leaves your device.

How to Use

  1. Paste your raw or minified JSON into the input area above
  2. Click the Format button or press Ctrl+Enter
  3. Copy the formatted output using the Copy button

Frequently Asked Questions

What is a JSON formatter?
A JSON formatter takes raw or minified JSON and adds proper indentation and line breaks to make it human-readable. It also validates JSON syntax and highlights any errors.
Is JSONView's JSON formatter free?
Yes, completely free. No signup, no account, no limits.
Does my JSON data get sent to a server?
No. All formatting happens in your browser. Your data never leaves your device.
What is the difference between a JSON formatter and a JSON beautifier?
They are the same thing. "Formatter" and "beautifier" are used interchangeably — both refer to tools that add indentation and whitespace to make JSON readable.
Can I format large JSON files?
Yes. JSONView handles large JSON files efficiently in the browser without sending data to any server.

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