JSON Formatter
FormattersTired of dealing with unreadable, single-line JSON data? Our free online JSON Formatter instantly beautifies your code, making it easy to read, debug, and share with your team.
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Indentation:
Tired of dealing with unreadable, single-line JSON data? Our free online JSON Formatter instantly beautifies your code, making it easy to read, debug, and share with your team.
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Tip
Use the 'Copy' button to quickly move your formatted JSON back into your code editor.
Did You Know?
JSON keys must always be double-quoted according to the official specification.
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 industry standard for transmitting data between a server and a web application. Because JSON often arrives as a single, minified string from APIs, formatting is essential for developers to understand the data structure and verify its contents.
Best Practice
Avoid trailing commas in JSON, as they are invalid and can cause errors in many parsers.
For local development, tools like Prettier or the built-in formatters in IDEs are excellent for maintaining file consistency. If you work with the command line, jq is a powerful tool for slicing and formatting JSON. Our online tool complements these by providing a quick, zero-setup environment for one-off formatting tasks and debugging external API payloads.
Q: Is my data safe using this tool? A: Yes, our JSON formatter processes data entirely within your browser, meaning your data is never sent to our servers.
Q: Does this tool validate JSON as well? A: Yes, it will check for syntax errors and alert you if the JSON is malformed, such as missing quotes around keys.
Q: What indentation options are available? A: You can choose between 2-space, 4-space, or tab-based indentation to suit your personal or project-wide style guides.
Q: Can it handle large JSON files? A: Most modern browsers can handle several megabytes of JSON data efficiently without significant performance lag.
Tip
If you need to save space in production, use our JSON Minifier instead of the Formatter.