JSON Formatter & Validator

Beautify, minify, and validate your JSON data with ease.

How to Use the JSON Tool

  1. Paste Your JSON: Paste your JSON data into the text area. You can use the "Paste" icon for convenience.
  2. Validate Automatically: As you paste or type, the tool will automatically validate your JSON. A status message will appear below the buttons indicating if the JSON is valid or not.
  3. Format or Minify:
    • Click "Format / Beautify" to convert messy or minified JSON into a readable, indented format.
    • Click "Minify" to remove all whitespace and comments, making the JSON compact.
  4. Copy Result: Use the "Copy" icon to copy the processed JSON to your clipboard.

About Our JSON Formatter & Validator

JSON (JavaScript Object Notation) has become the de facto standard for data interchange on the web. However, raw JSON from APIs or files can often be unformatted and difficult to read, or contain syntax errors that break applications. Our tool is designed to solve these problems for developers, QA engineers, and students.

It acts as a comprehensive JSON toolkit: Validator: It provides instant feedback on whether your JSON structure is valid, pointing out the line and character of any errors. Formatter/Beautifier: It transforms compact or messy JSON into a beautifully indented, human-readable format. Minifier: It strips out all non-essential whitespace, creating the smallest possible version of the JSON for efficient data transmission.

Frequently Asked Questions (FAQ)

What makes JSON "invalid"?

Common JSON syntax errors include: missing commas between elements, trailing commas after the last element in an object or array, keys not enclosed in double quotes, or mismatched brackets/braces. Our validator will catch these issues and help you pinpoint the error.

Can this tool handle very large JSON files?

The tool operates entirely within your browser. While it can handle large amounts of data, performance with extremely large JSON files (many megabytes) will depend on your computer's memory and browser's performance. For most typical use cases, it will be very fast.

Does this tool support JSON with comments?

While the official JSON specification does not support comments, many real-world tools and configurations use them. Our tool will attempt to strip out standard JavaScript-style comments (// and /* */) before processing, allowing you to format JSON that contains them. However, for strict validation, comments will cause an error.