Format, validate and minify JSON with clear error messages.
Paste JSON and choose Format to pretty-print it with indentation, or Minify to compress it to one line. Invalid JSON shows exactly where parsing failed.
No. Formatting and validation happen entirely in your browser, so it is safe to paste API responses and configuration files here.
JSON Formatter is a free online tool from Daily Tools, made for everyday use in the United States, the United Kingdom, Canada, the UAE and everywhere else. Format, validate and minify JSON with clear errors. Like every tool on this site, it runs entirely in your browser: there is no sign-up, nothing you type or upload is sent to a server, and it works the same on a phone, tablet or desktop. Bookmark this page to come straight back to the JSON Formatter whenever you need it.
Questions or a wrong result? Email bingeul29@gmail.com with the tool name and what you entered.