JSON Formatter
Format, beautify, and pretty-print JSON data instantly. Free online JSON formatter with syntax highlighting, tree viewer, and one-click copy.
Examples
{"name":"FormatForge","version":"1.0","features":["format","validate","convert"],"config":{"theme":"dark","indent":2}}{"users":[{"id":1,"name":"Alice","roles":["admin","editor"]},{"id":2,"name":"Bob","roles":["viewer"]}]}Frequently Asked Questions
What is JSON formatting?
JSON formatting (or beautifying) adds proper indentation and line breaks to JSON data, making it easy to read and debug. Our tool formats JSON with 2-space indentation by default.
Is my data safe?
Yes! All processing happens entirely in your browser. We never send your data to any server, and nothing is stored — not even temporarily.
Can I format large JSON files?
Yes. Since formatting runs client-side using your browser's JavaScript engine, it can handle files up to several megabytes without any issues.
What's the difference between formatting and validating?
Formatting restructures valid JSON with proper indentation. Validation checks whether the JSON syntax is correct and reports errors if it isn't.
Does this tool support JSON5 or JSONC?
Currently, this tool supports standard JSON (RFC 8259). JSON5 and JSONC with comments are not supported yet.
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