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Online JSON Formatter & Diff Tool

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What is this tool for?

Beautify, minify, validate and compare two JSON objects and visualize the differences with this easy-to-use online JSON formatter. Perfect for MongoDB debugging, configuration comparison, and everyday JSON inspection, this lightweight tool ensures efficiency. Paste your JSON data into the text areas below and click "Compare" to see the differences highlighted. Handles typical JSON sizes (hundreds of lines) smoothly.

How to interpret comparison output

When comparing two JSON objects, differences are highlighted to help you quickly identify changes. Added properties are shown in green, removed properties in red, and modified properties display both the old and new values in yellow. Use the "Show Unchanged" option to view properties that are identical in both JSON objects.

  • Green: Added properties
  • Red: Removed properties
  • Yellow: Modified properties (shows old and new values)
  • Default: Unchanged properties (if "Show Unchanged" is enabled)

What is JSON?

JSON (JavaScript Object Notation) is a lightweight data format used for storing and exchanging information, commonly used in web development, APIs, and configuration files.

How to Format JSON Online

Paste your JSON data into the text area and click "Format" to beautify or minify your JSON instantly. This tool helps you quickly validate and clean up JSON for easier reading and debugging.

How to Compare JSON Objects

Use the comparator to highlight differences between two JSON objects. This is useful for debugging MongoDB documents, comparing configuration files, or tracking changes in API responses. You can use "Show Unchanged" to view unchanged properties.

How to beautify and minify JSON

To beautify JSON, paste it into the text area and click "Beautify" or "Minify" button. This tool helps you quickly switch between readable and compact JSON formats.

Is My Data Safe?

Your JSON data is processed entirely in your browser and is never sent to any server, ensuring privacy and security for sensitive information.