JSON Formatter & Beautifier
Instantly format, validate, and beautify your JSON. Fix messy JSON with clean indentation and easy-to-read structure.
Input JSON
1
Formatted Output
1
What is a JSON Formatter?
A JSON Formatter (also called a JSON Beautifier or JSON Pretty Printer) is an online tool that transforms raw, compressed, or unformatted JSON data into a clean, readable format with proper indentation and structure. JSON (JavaScript Object Notation) is a lightweight data format used extensively in web development, APIs, and configuration files.
When working with APIs or debugging code, JSON data often comes in a single line without any formatting, making it extremely difficult to read and understand. Our JSON Formatter instantly converts this messy data into a well-structured, indented format that's easy to scan and analyze.
Did you know? JSON is the most popular data interchange format on the web, used by virtually every modern API and web service including Google, Twitter, Facebook, and millions of other applications.
Common Use Cases
API Response Debugging
Format API responses to quickly understand data structures and identify issues in complex nested objects.
Configuration Files
Clean up and validate configuration files like package.json, tsconfig.json, or other JSON-based config files.
Data Analysis
Format large JSON datasets to make them readable for analysis, reporting, or data migration tasks.
Code Documentation
Create well-formatted JSON examples for documentation, tutorials, or technical specifications.
Key Features
Instant Formatting
Format and beautify JSON data in milliseconds with a single click
Json Validation
Detects syntax errors in real time with clear, helpful messages
100% Private & Secure
All processing in your browser - no server uploads, no tracking, no storage
Minification
Compress JSON by removing whitespace for production-ready output
File Upload & Download
Upload .json files directly or download formatted results instantly
Key Sorting
Alphabetically sort object keys for better readability and comparison
Why Use Our JSON Formatter?
Lightning Fast Performance
Our tool processes JSON data instantly in your browser without any server delays. Format even large JSON files in milliseconds with zero latency.
Privacy-First Design
Your sensitive data never leaves your device. Unlike other formatters that send data to external servers, we process everything locally in your browser, ensuring complete privacy and security.
Customizable Formatting
Choose your preferred indentation size (2, 4, or 8 spaces), enable alphabetical key sorting, and customize the output to match your coding standards and preferences.
Completely Free Forever
No hidden costs, no premium features, no signup required. All features are available to everyone, always. Use it as much as you need without any limitations.
Perfect for Developers
Built by developers for developers. Whether you're debugging API responses, working with configuration files, or analyzing JSON data structures, our tool handles it all with ease.
How to Use the Json Formatter
Paste or Upload JSON
Enter your JSON in the input box or click Upload to load JSON from file.
Choose Your Settings
Select indentation size (2, 4, or 8 spaces) and optionally enable key sorting for cleaner, readable output.
Format or Minify
Click Format to beautify your JSON or Minify to compress it for production use.
Validate Errors
The tool detects syntax errors and highlights them, helping you fix invalid JSON quickly.
Copy or Download
Click Copy to copy the formatted JSON to the clipboard, or click Download to save it as a .json file.
Frequently Asked Questions
Get answers to common questions about our JSON Formatter