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JSON Formatter & Validator
Format, validate, and beautify JSON data instantly. Catch syntax errors with line numbers.
Frequently Asked Questions
Is this JSON formatter free?
Yes, it's completely free with no limits. All processing happens in your browser — no data is sent to any server.
Can it validate JSON?
Yes. If your JSON has syntax errors, the tool will show the exact error message and position so you can fix it quickly.
What's the maximum JSON size?
There's no hard limit since it runs in your browser, but very large files (50MB+) may be slow depending on your device.
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