Free tool
JSON Formatter
Format, validate and tidy JSON instantly - right in your browser, nothing uploaded.
Input
Output
Size: 0 bytes Lines: 0 Keys: 0
Valid JSON
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01Paste JSON
Drop in raw or messy JSON, or load the sample.
02Beautify or validate
Indent, minify or sort keys - errors flag as you type.
03Copy the clean result
Grab the tidy output or download it as a file.
format validate minify private
Is my JSON data private?
Yes. Everything runs in your browser - your data never leaves your device or reaches a server.
Is it really free?
Completely free, with no signup and no limits.
Any keyboard shortcuts?
Press Ctrl / Cmd + Enter to beautify the input instantly.