JSON Formatter & Minifier

Online JSON Formatting, Minification & Validation

This online JSON formatter helps organize, minify, and validate JSON data. It can convert single-line, minified, or poorly structured JSON into a clear and readable format, while providing key sorting, syntax validation, and error location features. It is suitable for API debugging, configuration file inspection, and JSON data organization.

JSON Formatting and Beautification

After entering JSON data, the tool automatically adds line breaks and indentation according to objects, arrays, and nested levels, making the JSON structure easier to read. It supports 2-space, 4-space, 8-space, and Tab indentation, allowing you to adjust the output format to different coding standards.

Sort JSON by Key

When key sorting is enabled, the tool rearranges object fields according to their key names, making it easier to find fields, compare configuration content, and organize JSON data with similar structures. Array element order is preserved, while nested objects are also processed recursively.

JSON Minification

JSON minification removes whitespace, line breaks, and indentation that do not affect the data structure, converting JSON into a more compact text format. This is useful for API transmission, configuration storage, and reducing text size.

JSON Syntax Validation

The tool checks whether JSON can be parsed correctly and helps identify common syntax problems involving brackets, quotation marks, commas, and object or array structures. Syntax validation checks the JSON structure and does not mean that the data complies with specific business rules.

JSON Error Location

When JSON contains a syntax error, the tool displays the error reason and its corresponding line and column position, with a location entry to help you quickly find the part of the input that needs to be corrected.

Copy and Download Results

After processing, you can directly copy the formatted or minified JSON, download it as a JSON file, or replace the input with the result to continue formatting, minifying, or validating.

Use Cases

• Format JSON returned by APIs for easier development and debugging.
• Organize JSON configuration files and test data in projects.
• Check JSON syntax problems and quickly locate errors.
• Sort JSON fields by key for easier configuration comparison.
• Minify JSON text to remove unnecessary whitespace characters.

Privacy and Data Security

JSON formatting, minification, and validation are performed entirely in the browser. Input content is not uploaded to the server. API data, configuration files, and source code can be processed directly in the current browser.