Free Tool
Free JSON Formatter & Validator
Paste JSON to pretty-print, minify, or validate it.
Free, private, no upload to a server. Everything happens in your browser.
Your JSON is never sent anywhere — parsing and formatting happen entirely in your browser using the native JSON.parse.
JSON Input
Indent
Type: objectkeys: 3Minified size: 67 B
Formatted JSON
Everything You Need to Work With JSON
100% Private
Your JSON is never sent anywhere — parsing happens instantly in your browser.
Completely Free
No sign-up, no limits. Free forever.
Real Parser Errors
See the exact JSON.parse error message — no vague paraphrasing.
Flexible Indentation
Pretty-print with 2 spaces, 4 spaces, or tabs.
One-Click Minify
Strip all whitespace down to the smallest valid form.
Instant Stats
See the root type, key/item count, and minified byte size at a glance.
