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JSON Formatter & Validator

Professional JSON formatter for beautifying, minifying, and validating JSON code. Perfect for developers working with APIs, REST endpoints, and configuration files. Features include syntax highlighting, error detection, JSON repair, dark mode, and instant validation.

JSON Architect Pro

Real-time JSON processing

SAMPLES:
Auto Format
Sort Keys
Input JSON
1

Welcome to JSON Architect

Paste your JSON or try a sample to get started

OutputReady

Waiting for Input

Format JSON to see beautifully highlighted output here

Connected
•05:35 PM

What is JSON Formatting?

JSON (JavaScript Object Notation) is a lightweight data format widely used for APIs, configuration files, and data storage. JSON formatting makes this data human-readable by adding proper indentation and line breaks. Our free JSON formatter instantly beautifies minified or poorly formatted JSON code.

How to Use JSON Formatter & Validator

  1. Paste or upload your data - Copy and paste your content, upload a file, or use the sample data to get started.
  2. Configure your preferences - Choose formatting options like indentation size, sorting, or output format.
  3. Process with one click - Click the Format, Validate, or Minify button to process your data instantly.
  4. Copy or download results - Copy the output to clipboard with one click or download as a file for later use.

Why Format JSON?

Unformatted JSON is difficult to read and debug. Formatting makes it easy to spot errors, understand data structure, and debug API responses. A JSON formatter is essential for developers working with REST APIs, databases, and configuration files.

✓

100% Free

No hidden charges, subscription fees, or watermarks. Use all features completely free.

🔒

100% Private

All processing happens locally in your browser. Your data never leaves your device or reaches any server.

⚡

Lightning Fast

Instant results with no server delays. Process large datasets in milliseconds directly in your browser.

Key Features

✓Instantly beautify minified JSON
✓Detect and highlight syntax errors
✓Validate JSON structure
✓Sort keys alphabetically
✓Supports custom indentation (2 spaces, 4 spaces, tabs)
✓Download formatted JSON as files

Common Use Cases

This JSON Formatter is perfect for:

  • •Debugging API responses from REST services
  • •Formatting API responses from endpoints
  • •Validating JSON configuration files
  • •Converting minified JSON to readable format
  • •Checking JSON syntax before deployment
  • •Sharing formatted JSON with team members

Frequently Asked Questions

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