Format, prettify, minify, and validate JSON data instantly. Secure, fast, and works offline in your browser.
Copy and paste your JSON data into the input field, or load an example to get started.
Select format, minify, or validate mode based on your development needs.
View formatted, minified, or validation results instantly with detailed error reporting.
Format API responses for testing and debugging. Validate JSON payloads before sending requests.
Format and validate configuration files for applications, including package.json and tsconfig.json.
Make JSON data readable for code reviews. Check syntax errors before committing changes.
Minify JSON for efficient storage and transmission. Reduce database payload sizes.
Validate JSON syntax and get detailed error messages with line and column numbers.
Process JSON entirely in your browser. Your data never leaves your device.
JSON (JavaScript Object Notation) is the most widely used data interchange format for APIs and web services. Understanding when to format, minify, or validate JSON is crucial for efficient development.
{name: "value"}{}[]JSON (JavaScript Object Notation) is a lightweight data interchange format. Formatting makes JSON human-readable for debugging, code reviews, and development. Minified JSON is smaller for production use, while formatted JSON is easier to read and edit.
Use the Validate mode in the tool. It will check your JSON against the official JSON specification and provide detailed error messages with line and column numbers if any syntax errors are found.
Yes, completely secure. All JSON processing happens in your browser using client-side JavaScript. Your data never leaves your device and is never sent to any server. The tool works entirely offline once loaded.
You can choose between 2, 4, or 8 spaces for indentation when formatting JSON. 2 spaces is most common for web development, while 4 spaces is popular in some coding standards. 8 spaces creates more readable but larger files.
Minification typically reduces JSON file size by 20-50%, depending on the original formatting. The tool shows exact savings in characters and percentage. This is especially important for API responses and configuration files.
Yes, the tool can handle large JSON files, but very large files (over 10MB) may cause browser performance issues. For extremely large files, consider using command-line tools or server-side processing.
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Format/Prettify: Converts minified JSON into a human-readable format with proper indentation and line breaks.
Minify: Removes all unnecessary whitespace and line breaks to reduce file size for production use.
Validate: Checks if your JSON syntax is valid according to the JSON specification.
Privacy Note: All processing happens in your browser. Your data never leaves your device.