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JSON Formatter

Format and validate your JSON easily

Statistics

Input size
0 Characters
Output size
0 Characters
Compression
0%
Valid
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How to use the JSON formatter?

Formatting in 3 clicks:

  1. Paste your JSON in the left area Paste your JSON in the left area
  2. Click on 'Format JSON' or 'Minify JSON' Click on 'Format JSON' or 'Minify JSON'
  3. Copy the formatted result with the copy button Copy the formatted result with the copy button
Main features

Syntax highlighting

Easily see the structure with colors for keys, values and types.

Real-time validation

Instantly detects errors with clear messages and exact position.

Smart formatting

Automatic indentation with 2 spaces for optimal readability.

Efficient compression

Minify your JSON to reduce size by up to 80% for APIs.

Best practices
  • Double quotes: Always use double quotes for keys and string values
  • No trailing comma: Avoid commas after the last element
  • Supported types: string, number, boolean, null, array, object
  • Security: All processing is done locally in your browser
Common use cases
API Development
  • Debug REST API responses
  • Format request payloads
  • Validate incoming webhooks
  • Test JSON configurations
Configuration & DevOps
  • Validate package.json and tsconfig.json
  • Format configuration files
  • Debug Kubernetes manifests
  • Prepare test data
Did you know?

JSON (JavaScript Object Notation) was created by Douglas Crockford in 2001. Although inspired by JavaScript, JSON is language-independent and is supported by almost all modern programming languages. It has become the de facto standard for data exchange on the web.