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JSON Formatter

Format, beautify, and validate JSON instantly. Paste raw JSON and get a clean, indented, human-readable output with syntax error detection.

Used 8.4K times today

How to Use JSON Formatter

  1. 1

    Paste your JSON

    Copy your raw or minified JSON string and paste it into the input area on the left.

  2. 2

    Click Format

    Hit the "Format" button to instantly beautify and indent your JSON with proper nesting.

  3. 3

    Copy the result

    Review the formatted output for any validation errors, then copy it to your clipboard.

Frequently Asked Questions

Does JSON Formatter validate my JSON?
Yes. The formatter parses your input and highlights syntax errors such as missing commas, unclosed brackets, or invalid values before formatting.
Is my JSON data sent to a server?
No. All formatting happens entirely in your browser using JavaScript. Your data never leaves your device.
What indentation style is used?
The default indentation is 2 spaces, which is the most common convention. The output is fully standards-compliant JSON.

About JSON Formatter

The JSON Formatter on Utilko makes it effortless to transform a wall of minified or poorly structured JSON into a clean, readable format. Whether you are debugging an API response, reviewing configuration files, or inspecting webhook payloads, instant formatting saves you valuable time.

Unlike online tools that send your data to remote servers, Utilko processes everything locally in your browser. This means sensitive API keys, tokens, or personal data in your JSON payloads are never transmitted or stored anywhere.

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