JSON Formatter
Format and validate your JSON data quickly and easily
Validate
Runs entirely in browser
Files stay on your device
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How does the JSON formatter work?
Paste your JSON string and click Format. Convertly parses it using the browser's native JSON engine, then renders it with proper indentation. Validation errors are highlighted instantly.
When would I need to format JSON?
Minified API responses, config files, and database exports are hard to read without formatting. This tool prettifies them in one click. Minify does the reverse — useful for reducing payload size.
Is my JSON data private?
Yes. Your JSON is processed entirely in your browser — no data is sent to any server. Safe to use with API keys, credentials, or private configuration data.