Beautify, minify, and validate your JSON data. Works with large JSON payloads.
This free online JSON formatter makes it easy to beautify, minify, and validate your JSON data. Follow these simple steps:
A JSON formatter (also called a JSON beautifier or pretty-printer) takes raw, compact JSON data and formats it with proper indentation, line breaks, and spacing so it becomes readable. It also validates the JSON syntax and highlights any errors.
Yes, completely free. No signup, no credit card, no usage limits. All processing happens locally in your browser — your data never leaves your device.
Beautify adds indentation and line breaks to make JSON human-readable. Minify removes all unnecessary whitespace, reducing file size for faster network transfer. Both produce valid JSON.
Yes, the tool handles large JSON payloads effectively. All processing is done client-side in your browser, so performance depends on your device. For extremely large files (tens of megabytes), copy-pasting may be slow; consider using a command-line tool like jq instead.
No. All JSON parsing, formatting, and validation happens entirely in your browser using JavaScript. Your data stays private and never leaves your computer.