JSON Formatter
FormattersTired of dealing with minified or messy JSON? Our free online JSON Formatter instantly prettifies your data into a clean, human-readable structure with customizable indentation levels.
Input
Output
Indentation:
Tired of dealing with minified or messy JSON? Our free online JSON Formatter instantly prettifies your data into a clean, human-readable structure with customizable indentation levels.
Search for a command to run...
Tip
Use the JSON.stringify(obj, null, 2) method in JavaScript to format JSON in your console.
Did You Know?
JSON is technically a subset of JavaScript syntax but has become a language-independent standard.
JSON (JavaScript Object Notation) is a lightweight data-interchange format that is easy for humans to read and write and easy for machines to parse and generate. It is the de facto standard for APIs, configuration files, and data storage in modern web development. Proper formatting is essential because white-space-free JSON is difficult to inspect and debug during the development process.
Best Practice
Avoid trailing commas in JSON; while some parsers accept them, they are technically invalid according to the spec.
Most modern IDEs like VS Code or IntelliJ have built-in JSON support, but online tools are perfect for quick checks of API responses. For command-line enthusiasts, jq is a powerful tool for processing and formatting JSON. Teams often use Prettier to enforce consistent JSON styles across their entire codebase via git hooks or CI/CD pipelines to ensure data files remain standardized.
Q: Is my JSON data safe? A: Yes, our tool processes data locally in your browser; we do not store or log any of your sensitive code or data.
Q: Can this tool handle large JSON files? A: Our formatter is optimized for speed and can handle most standard API responses and configuration files efficiently.
Q: Why is my JSON not formatting? A: The most common reason is a syntax error, such as a missing quote or a trailing comma, which our tool will help you identify.
Tip
You can use 'jq .' in your terminal to quickly format JSON files without a browser.