JSON Formatter & Validator
Format, beautify, minify, and validate JSON data instantly, with precise error locations.
Input JSON
0 characters
Formatted JSON
0 characters
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About JSON Formatter
Our JSON Formatter helps developers validate, format, and minify JSON data quickly and easily. All processing happens in your browser, ensuring your data remains private and secure.
How to Use
- Paste JSON: Copy your JSON data into the input editor on the left.
- Format/Beautify: Click to prettify your JSON with proper indentation and line breaks.
- Minify: Remove all whitespace to create compact JSON for production.
- Validate: Check if your JSON is valid without formatting.
- Adjust Indentation: Change the number of spaces for indentation (2-8 spaces).
- Copy Output: Easily copy the formatted result to your clipboard.
Features
- Syntax Validation: Instantly detect JSON syntax errors with a clear message and the exact line and column.
- Beautify: Format JSON with customizable indentation for better readability.
- Minify: Compress JSON by removing unnecessary whitespace.
- Safe for Big Numbers: Integers beyond 2^53 (IDs, amounts) keep their exact digits in modern browsers, and duplicate keys are reported.
- Character Count: Track input and output size in real-time.
- Privacy First: All processing happens locally in your browser.
What is JSON?
JSON (JavaScript Object Notation) is a lightweight data-interchange format that's easy for humans to read and write, and easy for machines to parse and generate. It's widely used in web APIs, configuration files, and data storage.
Common JSON Use Cases
- API Responses: Format API responses for easier debugging
- Configuration Files: Validate and format config files
- Data Transfer: Prepare JSON for data exchange
- Development: Debug JSON data structures
- Documentation: Create readable JSON examples