Format, validate, and beautify JSON data in real time. Pretty-print minified JSON, detect syntax errors instantly, sort keys alphabetically, and switch between compact and expanded views. Essential for web developers, API engineers, and anyone who works with JSON data.
A JSON formatter is a developer tool that validates, beautifies, and transforms JSON data. It takes raw or minified JSON and outputs it with proper indentation, making the structure readable. It can also minify formatted JSON for production use, sort keys alphabetically for consistency, and validate syntax to catch errors before they cause runtime problems.
JSON (JavaScript Object Notation) is the most common data interchange format for web APIs, configuration files, and data storage. When debugging API responses or editing config files, readable formatting is essential. Use this tool alongside our HTML Tag Remover when working with web data, or the Text Formatter for general text cleanup tasks.
JSON is validated as you type with clear error messages that describe exactly what went wrong and where.
Instantly switch between human-readable formatted JSON and compact minified JSON with a single click.
Recursively sort all object keys alphabetically for consistent formatting and easier comparison between JSON documents.
View total keys, objects, arrays, and nesting depth at a glance to understand your JSON structure before working with it.
API Debugging: Paste API response bodies to quickly validate structure and spot missing fields or unexpected data types.
Configuration Files: Format and validate package.json, tsconfig.json, or any configuration file before committing changes.
Data Comparison: Sort keys on two JSON documents, then paste them side-by-side in a diff tool to quickly find differences.
Always validate API responses before parsing them in your code. Catching malformed JSON early prevents runtime errors and debugging headaches.
Use minified JSON for production API payloads to reduce bandwidth. Use prettified JSON for configuration files and documentation.
Sort keys before committing JSON files to version control. Consistent key ordering prevents meaningless diffs caused by property reordering.
It formats, validates, and beautifies JSON data. Pretty-print minified JSON, minify formatted JSON, sort keys, and detect syntax errors in real time.
Yes. It validates as you type and shows detailed error messages including the position of syntax errors.
Yes. Choose between 2-space, 3-space, or 4-space indentation for the formatted output.