Paste JSON to validate it, pretty-print it or minify it. Free, no account, and it runs entirely in your browser - nothing is uploaded.
about this tool
Free, no sign-up. Formatting, validation and minifying all happen in your browser, so API responses, config files and tokens you paste here never leave your device. Part of techtuate, a growing collection of little tools that just work.
Output updates as you type. Format indents with two spaces; Minify strips every bit of whitespace. If the JSON is broken, the parser's message tells you what went wrong and roughly where.
Compare: techtuate vs JSONFormatter.org · all comparisons · more techtuate tools
questions people ask
With this tool, yes; all formatting and validation happen in your browser, so your JSON is never uploaded to a server.
Paste your JSON and it is checked in-browser; invalid syntax is flagged so you can find the error without sending data anywhere.
Formatting (beautifying) adds indentation for readability; minifying strips whitespace to shrink the payload. This tool does both locally.