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JSON Formatter

JSON Input

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Formatted output will appear here.

About JSON Formatter

The JSON Formatter tool is a powerful, free online utility designed to help you work with JSON data efficiently. Whether you're debugging API responses, validating config files, or exploring complex nested structures, this tool provides both a formatted view and an interactive tree viewer.

With features like automatic formatting, minification, key sorting, and a collapsible tree interface, you have complete control over how you view and work with your JSON data. No installation required—just paste your JSON and start working.

All processing happens directly in your browser, ensuring your data remains private and secure. No data is sent to servers or stored anywhere.

Key Features

JSON Formatting

Beautify minified JSON with proper indentation and structure for readability

Minification

Compress JSON by removing unnecessary whitespace and line breaks

Sort Keys

Automatically sort object keys alphabetically for consistent output

Tree Viewer

Interactive collapsible tree view to explore nested objects and arrays

Raw Output

View raw formatted JSON alongside the tree viewer representation

One-Click Copy

Instantly copy formatted results to your clipboard

Download JSON

Export your formatted JSON as a .json file

Dark Mode

Comfortable viewing in light or dark themes

Popular Use Cases

  • Validating and debugging API responses
  • Formatting config files and settings
  • Exploring complex nested JSON structures
  • Converting minified JSON to readable format
  • Organizing and cleaning JSON data
  • Preparing JSON for documentation
  • Debugging JSON parsing errors
  • Sorting and standardizing JSON keys

Frequently Asked Questions

What is the JSON Formatter tool?

The JSON Formatter is a free online utility that helps you format, validate, and explore JSON data. It can beautify minified JSON, minify formatted JSON, sort keys, and provide an interactive tree view for exploring complex structures.

Can I format minified JSON?

Yes! Paste any minified JSON and click 'Format' to instantly beautify it with proper indentation and structure. You can choose between 2 spaces, 4 spaces, or tabs for indentation.

What is the Tree Viewer?

The Tree Viewer is an interactive way to explore JSON data. Click the expand/collapse arrows (▾/▸) next to objects and arrays to see nested content. This is perfect for understanding complex JSON structures.

How do I sort JSON keys?

Enable the 'Sort keys' checkbox before formatting. This will automatically sort all object keys alphabetically, making your JSON more organized and consistent.

Can I download the formatted JSON?

Yes! Use the 'Download' button to export your formatted JSON as a .json file. This is useful for saving your work or importing into other tools.

Is my JSON data secure?

Absolutely. All processing happens in your browser. Your JSON data is never sent to any server—everything is processed locally for complete privacy.

Can I use custom indentation?

Yes, you can choose between 2 spaces, 4 spaces, or tabs for indentation. Select your preference in the toolbar before formatting.

What if my JSON has errors?

The tool will display an error message indicating what's wrong. It also has some tolerance for trailing commas, which are common in JavaScript but invalid in JSON.