JSON Formatter
Paste any JSON string to format it with pretty indentation, validate its syntax, or compress it to a single line. The JSON formatter runs entirely in your browser — your data never leaves your device.
🔒 Privacy: all processing happens locally in your browser. Nothing is uploaded.
✅ Valid JSON
Indent
Input JSON175 chars
Output
0 chars
Frequently asked questions
Is my JSON sent to a server?
No. Everything runs locally in your browser.
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