JSON Formatter & Validator
Format, beautify, validate, and minify JSON data online instantly
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Format, beautify, validate, and minify JSON data online instantly
JSON formatting is essential for developers working with APIs, configuration files, and data interchange. Our free online JSON formatter helps you beautify, validate, and minify JSON data instantly without any signup required.
Simply paste your JSON code into the input area, select your preferred indentation style, and click the Format button. The tool will instantly display properly formatted JSON with syntax highlighting, making it easy to read and debug.
JSON (JavaScript Object Notation) is a lightweight, text-based data format that is easy for both humans to read and machines to parse. It's widely used for data exchange between servers and web applications, configuration files, and APIs. JSON supports objects, arrays, strings, numbers, booleans, and null values.
JSON syntax is strict and requires proper formatting. Common issues include missing commas, unquoted keys, trailing commas, and mismatched brackets. Our validator catches these errors and provides detailed error messages to help you fix them quickly.
Formatting (Beautifying) adds proper indentation and line breaks to make JSON readable. This is useful during development and debugging. Formatted JSON is easier to understand but takes up more space.
Minification removes all unnecessary whitespace and line breaks, reducing file size. This is useful for production environments where bandwidth and performance matter. Minified JSON is compact but harder to read manually.
Yes, your data is completely secure. All processing happens in your browser locally. We don't send your JSON data to any server or store it anywhere. Your privacy is our priority.
Common JSON errors include: unquoted keys, missing commas between properties, trailing commas, single quotes instead of double quotes, and unescaped special characters. Our validator identifies these issues and shows you exactly where they occur.
Yes, you can format JSON files of any size. However, very large files (over 10MB) may take a moment to process. For optimal performance, we recommend working with files under 5MB.
Click the "Validate" button to check your JSON syntax. If there are errors, the tool will display the line number and error description. Fix the issues and validate again until your JSON is valid.