JSON Formatter & Validator
Pretty-print, minify, and validate JSON in your browser. Free. No signup.
Format, validate, and beautify JSON
Paste any JSON and instantly get it formatted, validated, and pretty-printed. Catch syntax errors with the exact position of the problem, switch between expanded and minified, and copy the result. All processing happens in your browser – nothing is sent to a server.
Best for: inspecting API responses, debugging config files, sharing readable JSON with teammates, cleaning up data dumps.
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Output appears here after formatting.
Privacy: JSON is parsed by your browser using the native JSON.parse. Nothing is sent over the network. Your data never leaves this tab.