JSON formatting tool - online beautification, compression, verification, one-click to improve readability!

A free online JSON formatter that supports one-click beautification, validation, and compression. No installation required, just open and use it. It's perfect for quickly organizing data, viewing logs, or optimizing configuration files.

Inspiration

This tool was inspired by common JSON readability issues encountered during development and operations: lack of indentation, overly long lines, or cluttered comments. Its goal is to instantly make any JSON data clear and structured, making it easier to read.

How to Use

1. Paste the JSON content into the text input area above.

2. Click "Format" to instantly preview the results and verification information.

3. After formatting is complete, you can copy it with one click.

Application Scenarios

• View API return or debug interface data.

• Clean up log fragments and configuration files.

• Generate readable sample data for documentation or tutorials.

How it works

The tool is based on the open-source Prettier framework, which parses and reshapes JSON, providing a standardized, readable format. Users can format and validate data directly on the web page without installing any software.

FQA

1. Is installation or registration required?

   No, it can be used directly from the web page. It's free and works out of the box.

2. Will the input content be saved or leaked?

   This tool is for real-time processing only. The platform does not store user data. For details on data processing and privacy, please refer to the website's privacy statement.

3. What JSON features are supported?

   Standard JSON (objects, arrays, strings, numbers, Booleans, null) and common comments/whitespace handling are supported. For non-standard extensions (such as JSON5/special comments), please test compatibility first.

4. What will happen if a validation error occurs?

   If there is a JSON syntax error, the tool will return the error type and approximate line number to help you quickly locate and correct it.

5. Can it handle large files or high concurrency?

   Formatting of larger files is supported, but extremely large files or high concurrency may affect response speed. If performance limitations are encountered, process the data in segments or use local tools.